IEC 62756-1:2015

IEC 62756-1 ®
Edition 1.0 2015-05
INTERNATIONAL
STANDARD
colour
inside
Digital load side transmission lighting control (DLT) –
Part 1: Basic requirements
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IEC 62756-1 ®
Edition 1.0 2015-05
INTERNATIONAL
STANDARD
colour
inside
Digital load side transmission lighting control (DLT) –

Part 1: Basic requirements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.140.99 ISBN 978-2-8322-2711-4

– 2 – IEC 62756-1:2015 © IEC 2015
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 General description . 10
4.1 General . 10
4.2 Master-slave structure . 10
4.3 Specification overview . 10
5 General requirements . 10
5.1 Voltage rating . 10
5.2 Frequency rating . 11
5.3 Marking of control devices and control gear . 11
6 Electrical specification . 11
6.1 General . 11
6.2 Wiring method . 12
6.3 Wiring diagram . 12
6.4 Block diagram of the control gear . 12
6.5 Block diagram of the control device . 13
6.6 Electrical characteristics in different periods of the mains waveform . 13
6.6.1 General . 13
6.6.2 Separation of the half-wave into time periods . 14
6.6.3 Electrical characteristics of the supply period . 14
6.6.4 Electrical characteristics of the operating period . 19
6.6.5 Electrical characteristics of the data period . 19
6.7 Data signal voltage range and timing . 23
6.8 Power up timing . 23
6.9 Electrical characteristics during the off state of control gear . 24
6.9.1 General . 24
6.9.2 Power controlled off state . 24
6.9.3 Telegram controlled off state . 25
7 Data timing . 25
7.1 General . 25
7.2 Information bit timing . 25
7.3 Permissible frames . 25
8 Telegram structure . 26
8.1 General . 26
8.2 Telegrams . 27
8.2.1 General . 27
8.2.2 Group number . 27
8.2.3 Telegram type . 27
8.2.4 Parity bit . 27
8.2.5 Data for control of the control gear . 27
9 Definition of telegram types . 27
9.1 Summary of telegram types . 27

9.2 Telegram type 0: Brightness . 28
9.3 Telegram type 1: Colour control . 28
9.4 Telegram type 2: Colour temperature control . 29
9.5 Telegram type 3 . 29
9.6 Telegram type 4 . 29
9.7 Telegram type 5: commissioning: Group number assignment . 29
9.8 Telegram type 6: Manufacturer specific . 30
9.9 Telegram type 7: extended telegram . 30
10 Method of operation . 30
10.1 General . 30
10.2 Brightness . 31
10.2.1 General . 31
10.2.2 Response time . 31
10.2.3 Light output level . 31
10.2.4 Start-up . 31
10.3 Colour control . 31
10.3.1 General . 31
10.3.2 Colour (x, y) . 31
10.3.3 Response time . 32
10.3.4 Colour gamut . 32
10.3.5 Start-up . 32
10.4 Colour temperature control . 33
10.4.1 General . 33
10.4.2 CCT (correlated colour temperature) . 33
10.4.3 Response time . 33
10.4.4 Start-up . 33
10.5 Telegram controlled group number assignment . 33
10.6 Manufacturer specific telegram . 34
11 Test procedures . 34
11.1 General . 34
11.2 Electrical characteristics tests . 35
11.2.1 General . 35
11.2.2 Test of control device . 35
11.2.3 Test of control gear . 38
11.3 Test of data timing . 41
11.4 Test of telegram structure . 41
11.4.1 Test of control device . 41
11.4.2 Test of control gear . 41
11.5 Test of telegram types . 42
11.5.1 General . 42
11.5.2 Rejection of unsupported telegram types . 42
11.5.3 Test of telegram type 0: brightness . 42
11.5.4 Test of telegram type 1: colour control . 42
11.5.5 Test of telegram type 2: colour temperature control . 43
11.5.6 Test of telegram type 5: commissioning . 43
11.5.7 Test of telegram type 6: manufacturer specific . 43
11.6 Test of method of operation . 43
11.6.1 General . 43
11.6.2 Group number operation . 43

– 4 – IEC 62756-1:2015 © IEC 2015
Annex A (informative) Examples of procedures for telegram controlled group number
commissioning . 47
A.1 Telegram controlled group number assignment of a new system . 47
A.2 Telegram controlled group number assignment of replacement control gear . 47
A.3 Telegram controlled changing of group numbers . 48

Figure 1 – Example wiring diagram . 12
Figure 2 – Example of block diagram of control gear . 13
Figure 3 – Example of block diagram of control device . 13
Figure 4 – Time periods of each half-wave . 14
Figure 5 – Timing of supply period . 15
Figure 6 – Timing data period . 20
Figure 7 – Rise time and fall time at the control interface . 23
Figure 8 – Transmission of “start of telegram” . 25
Figure 9 – Transmission of first bit 0, second bit 0 . 25
Figure 10 – Transmission of first bit 0, second bit 1 . 26
Figure 11 – Transmission of first bit 1, second bit 0 . 26
Figure 12 – Transmission of first bit 1, second bit 1 . 26
Figure 13 – Brightness telegram . 28
Figure 14 – Colour control telegram . 28
Figure 15 – Colour temperature telegram . 29
Figure 16 – Group number assignment telegram . 29
Figure 17 – Manufacturer specific telegram. 30
Figure 18 – The CIE 1931 colour space chromaticity diagram . 32
Figure 19 – Test Circuit for testing the Control Device . 35
Figure 20 – Test Circuit for testing the Control Gear . 38
Figure 21 – Voltage applied to control gear for test procedure . 39

Table 1 – Nominal mains voltage 100 V, frequency 50 Hz or 60 Hz . 17
Table 2 – Nominal mains voltage 120 V; frequency 50 Hz or 60 Hz . 17
Table 3 – Nominal mains voltage 200 V; frequency 50 Hz or 60 Hz . 18
Table 4 – Nominal mains voltage 230 V; frequency 50 Hz or 60 Hz . 18
Table 5 – Nominal mains voltage 277 V; frequency 50 Hz or 60 Hz . 19
Table 6 – Nominal mains voltage 100 V; frequency 50 Hz or 60 Hz . 21
Table 7 – Nominal mains voltage 120 V; frequency 50 Hz or 60 Hz . 21
Table 8 – Nominal mains voltage 200 V; frequency 50 Hz or 60 Hz . 21
Table 9 – Nominal mains voltage 230 V; frequency 50 Hz or 60 Hz . 22
Table 10 – Nominal mains voltage 277 V; frequency 50 Hz or 60 Hz . 22
Table 11 – Electrical characteristics of the data signal . 23
Table 12 – Currents and Voltages for control gear during the power controlled off state . 24
Table 13 – Telegram types . 28
Table 14 – Dimming characteristic . 31
Table 15 – Parameters for testing purposes . 35
Table 16 – Group number test telegram sequence . 44

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIGITAL LOAD SIDE TRANSMISSION LIGHTING CONTROL (DLT) –

Part 1: Basic requirements
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62756-1 has been prepared by subcommittee 34C: Auxiliaries for
lamps, of IEC technical committee 34: Lamps and related equipment.
The text of this standard is based on the following documents:
CDV Report on voting
34C/1054/CDV 34C/1081B/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 62756 series, published under the general title Digital load side
transmission lighting control (DLT), can be found on the IEC website.

– 6 – IEC 62756-1:2015 © IEC 2015
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
INTRODUCTION
This standard concerning Digital Load Side Transmission Lighting Control (DLT) describes a
protocol for simple control of brightness, colour, colour temperature, and other parameters for
the purpose of controlling lighting sources such as CFLi, LED light engines, electronic control
gear and any other light source with integrated or external control gear.
This protocol uses existing wiring and allows easy retrofit of standard switches, dimmers and
lamps with the new devices described in this standard, with little or no configuration.
The following standards contain safety requirements for control devices and control gear:
– IEC 60669-2-1, Switches for household and similar fixed electrical installations – Part 2-1:
Particular requirements – Electronic switches,
– IEC 61347, Lamp control gear,
– IEC 60968, Self-ballasted lamps for general lighting services – Safety requirements,
– IEC 62560, Self-ballasted LED-lamps for general lighting services by voltage > 50 V –
Safety specifications.
– 8 – IEC 62756-1:2015 © IEC 2015
DIGITAL LOAD SIDE TRANSMISSION LIGHTING CONTROL (DLT) –

Part 1: Basic requirements
1 Scope
This International Standard specifies a protocol, electrical interface and test procedures for
control of electronic lighting equipment by digital signals over the load side mains wiring.
Safety requirements are not covered by this standard.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60364 (all parts), Low-voltage electrical installations
IEC 60038, IEC standard voltages
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
load side
wire from the output of the control device to the supply input of one or more control gear
3.2
interface
wires used for both supply of AC mains power and data transfer
3.3
control device
device that is connected to the interface and sends commands to at least one control gear
[SOURCE: IEC 62386-101:2009, 3.1, modified — "in order to control other devices (for
example lamp control gear) connected to the same interface" has been replaced by "to at
least one control gear"]
3.4
control gear
one or more components between the supply and one or more lamps which may serve to
transform the supply voltage, limit the current of the lamp(s) to the required value, provide
starting voltage and preheating current, prevent cold starting, correct power factor or reduce
radio interference.
Note 1 to entry: Lamps may have an integrated control gear such as an integrated compact fluorescent lamp or
integrated LED lamp. Any references to control gear will include any such integrated lamps.
[SOURCE: IEC 62386-101:2009, 3.2]

3.5
master
device that initiates transmission of data on the interface
3.6
slave
device that reacts to data on the interface
3.7
supply period
time period during which power is supplied to a control device
3.8
operating period
time period during which power is supplied to a control gear
3.9
data period
time period during which data is transmitted
3.10
brightness
lumen output of the light source
3.11
frame
sequence of consecutive bits
3.12
telegram
complete sequence of consecutive frames causing a reaction in the slave
3.13
group number
number used to address a collection of control gear
3.14
response time
time taken from the end of a telegram to the reaction of a control gear
3.15
half wave
positive or negative 180° of an a.c. sine wave starting and ending at the zero crossing point
3.16
lighting system
combination of a control device and one or more control gear
3.17
telegram type
specific content of the telegram defining the message transmitted
3.18
two-wire device
control device where the current for the internal power supply flows through the control gear

– 10 – IEC 62756-1:2015 © IEC 2015
3.19
three-wire device
control device where the current for the internal power supply is supplied directly from the
mains
3.20
transmission signal
difference of the voltage across the control device between logical states during the data
period
3.21
start-up
transition from zero light output to a state with greater than zero light output
4 General description
4.1 General
The standardization of the control protocol for control of electronic lighting equipment by load
side digital signals is intended to achieve multi-vendor interoperabilityy between control
devices and control gear, including but not limited to: CFL integrated lamps, LED integrated
lamps and light sources with external control gear.
4.2 Master-slave structure
The control gear operates in slave mode only. Consequently the control gear receives
information only.
The control device operates in master mode only. Consequently the control device transmits
information only.
NOTE Bi-directional communication could be introduced in future parts or editions of this standard.
4.3 Specification overview
Below is a list of key capabilities of this protocol:
– Only one control device on the interface operates as a master.
– The control gear operates as a slave.
– The maximum number of control gear on one interface is limited only by the capabilities of
the control device.
– The capabilities of a control device include the maximum permissible power of total
connected control gear and the maximum permissible number of connected control gear.
– The maximum number of individual groups addressable on one interface is three.
– Bi-phase coding (Manchester coding) with error detection.
– Effective transmission rate: 200 bit/s at 50 Hz and 240 bit/s at 60 Hz.
– Compatible with mains voltages 100 V to 277 V.
– Supply of power to two-wire control devices is provided.
5 General requirements
5.1 Voltage rating
This standard applies to one or more of the following mains voltages: 100 V, 120 V, 200 V,
230 V, 277 V, according to IEC 60038.

5.2 Frequency rating
This standard applies to one or more of the following mains frequencies: 50 Hz, 60 Hz,
according to IEC 60038.
5.3 Marking of control devices and control gear
The following information shall be provided by the manufacturer.
Supported telegram types.
Indication if a control gear does not support group number assignment.
Factory assigned group number for control gear with a fixed factory group assignment other
than group 0.
Maximum number of group number assignments for control gear with limited number of group
number assignments.
Required minimum number of connected control gear for control devices requiring more than
one control gear to be connected.
NOTE Two-wire control devices could need a supply current that exceeds the current-carrying capability provided
by a single control gear.
6 Electrical specification
6.1 General
To describe the electrical characteristics of the interface, the following abbreviations are
used:
V Mains voltage (rated nominal value)
M
V (t) Instantaneous value of V
M M
V Peak voltage of V
Pk M
V Voltage between the line side (L) and load side terminals of the control device (see
CD
Figure 1)
I Current through the load side terminal of the control device (see Figure 1)
CD
Z Impedance between the line side (L) and load side terminals of the control device
CD
V Voltage across the input terminals of the control gear (see Figure 1)
CG
I Current through the input terminals of the control gear (see Figure 1)
CG
Z Impedance across the input terminals of the control gear
CG
P Rated input power of the control gear
CG
n Number of control gear connected with one control device
V Voltage across the input terminals of the control gear at the time that leads to
SW
disabling (supply period) or enabling (data period) the bypass
V Voltage between the line side (L) and load side terminals of the control device
Data
during the data period (see 6.7)
V Transmission voltage, difference of the voltage between the line side (L) and load
TS
side terminals of the control device between logical states; signal amplitude of the
transmission signal
V Voltage between the line side (L) and load side terminals of the control device when
CDmin
its impedance Z is minimal
CD
– 12 – IEC 62756-1:2015 © IEC 2015
I Current-carrying capability of the control gear during the low current intervals and
CG_LC
the data period
I Current-carrying capability of the control gear during the high current interval
CG_HC
V Maximum value for V during the high current phase with I = I
CG_HC CG CG CG_HC
I Limit for current I during the high current interval, defined by the control device
CD_HC CD
t Period time of one half-bit (see Figure 7)
HB
t Time needed to increase the voltage between the line side (L) and load side
rise
terminals of the control device (V ) from V + 0,1× V to V + 0,9×V
Data CDmin TS CDmin TS
t Time needed to decrease the voltage between the line side (L) and load side
fall
terminals of the control device (V ) from V + 0,9×V to V + 0,1×V
Data CDmin TS CDmin TS
t Time after zero crossing when the control device stops applying voltage to the
CD_S
control gear
I Lower most level for current carrying capability of the control gear during power
PO_low
controlled off state
I Upper most level for current carrying capability of the control gear during power
PO_high
controlled off state
V Lower limit for voltage across the input terminals of the control gear to provide a
PO_low
current carrying capability IPO_ during power controlled off state
low
V Upper limit for voltage across the input terminals of the control gear to provide a
PO_high
current carrying capability IPO_ during power controlled off state
high
6.2 Wiring method
The wiring of the devices is in accordance with the installation rules given in the IEC 60364
series, and also with the national wiring rules applicable in the country where the devices are
installed.
6.3 Wiring diagram
The wiring of the lighting system uses the traditional method of breaking the control device
into the mains connection to the control gear. Figure 1 is an example of a lighting system with
one control device and one or two control gear.
L
N
I
CD
V I V I V
CD
CG CG CG CG
Control gear Control gear
Control device
IEC
Figure 1 – Example wiring diagram
6.4 Block diagram of the control gear
For the DLT function, in addition to the parts usually used in a control gear, the following may
be required (see Figure 2):
• a rectifier unit for rectifying the mains voltage;
• a bypass that is able to carry specified currents as defined for different periods;

• a decoupling unit that decouples the transmitted data from the mains and forwards the
transmission signal to a processing unit;
• a processing unit that acts on the received telegram to drive the lamp controller;
• a lamp controller to supply light emitting elements, such as low pressure discharge lamps
or LEDs;
• a decoupling diode if the input capacitance of the lamp controller would disturb the
reception of the transmission signal.
L
∼
+
Lamp
Bypass Decoupling Processing
controller
N
∼ –
IEC
Figure 2 – Example of block diagram of control gear
6.5 Block diagram of the control device
A control device (see Figure 3) comprises an electronic power switch with integrated logic and
zero crossing detection to control the supply period, the operating period and the data period.
For proper operation, a power supply with an integrated current limiter is necessary for driving
the circuitry of the control device. The power required by the control device depends on the
design of the user interface.
A data modulator provides the data for the control gear.
L
Power supply
with integrated current limiter
Zero crossing detection
Load
line
User
interface
Data modulator
Logic
with timing control,
data processing/data output
IEC
Figure 3 – Example of block diagram of control device
6.6 Electrical characteristics in different periods of the mains waveform
6.6.1 General
All values in this subclause are relevant for both 2-wire and 3-wire control devices.

– 14 – IEC 62756-1:2015 © IEC 2015
6.6.2 Separation of the half-wave into time periods
All information given in this standard is related to a half-wave of the mains. Due to the polarity
change between subsequent half-waves, all values are regarded as absolute values.
Each half wave is divided into three periods: Supply period, operating period and data period,
as described in Figure 4 and 6.6.3 to 6.6.5.
V
mains
V
sw
Supply Operating Data t
period period period
IEC
Figure 4 – Time periods of each half-wave
6.6.3 Electrical characteristics of the supply period
6.6.3.1 General
During the supply period the control gear has to be able to conduct a current, which allows
the supply of power to the control device even in a two-wire installation.
The supply period is divided into 3 intervals; first low current interval, high current interval and
second low current interval (see Figure 5).
During all three intervals, the control device and the control gear shall comply with the
electrical characteristics listed in 6.6.3.2. to 6.6.3.4.
The control gear may deactivate its current-carrying capability during the supply period after it
has not received a valid telegram for two minutes.
NOTE This is for reducing power losses in case a control gear is used without a control device.

V
SW
t
I
CG_HC
I
CG_LC
t
I
CD_HC
I
CD_LC
t
t1 t2 t3 t4 t5
IEC
Figure 5 – Timing of supply period
6.6.3.2 First low current interval
The purpose of the first low current interval is that the control gear provides defined
impedance starting from the zero crossing of the mains, enabling the zero crossing detection
in the control device. This makes synchronization with the phase of the mains possible.
This interval starts with the zero crossing of the mains and ends at time t1.
During this interval, the control gear shall provide a current path with a minimum current-
carrying capability of I . The current I may be carried through the bypass circuitry
CG_LC CG_LC
and/or through the lamp controller of the control gear (see Figure 2). At small input voltages
of the control gear when I cannot be reached due to the characteristics of its input
CG_LC
circuitry (e.g. inrush current limiting elements), only its impedance Z is defined.
CG
During this interval, the instantaneous value of the current I shall not exceed I (t) as
CG CG
given in Tables 1 to 5.
At small input voltages of the control gear when I cannot be reached due to the
CG_LC
characteristics of its input circuitry (e.g. inrush current limiting elements), its impedance and
current-carrying capability are defined as listed in Tables 1 to 5.
I I V
CD CG mains
– 16 – IEC 62756-1:2015 © IEC 2015
6.6.3.3 High current interval
The purpose of the high current interval is to supply power to the control device.
This interval starts at time t1 and ends at time t3.
From time t1 to time t2, the control gear shall provide a current path with a minimum current-
carrying capability of I . The current I may be carried through the bypass circuitry
CG_HC CG_HC
and/or through the lamp controller of the control gear (see Figure 2). The impedance of the
control gear shall be low enough that the voltage drop does not exceed V when current
CG_HC
I is lower than or equal to I
CG CD_HC.
The control gear may reduce its current-carrying capability to I when the voltage V
CG_LC CG
across its terminals exceeds V .
CG_HC
From time t1 to time t2, the control device shall limit the current I through its terminals to
CD
I .
CD_HC
From time t2 to time t3, the control gear shall reduce the current-carrying capability of its
to I .
current path from I
CG_HC CG_LC
It is recommended that the control device limits the current I through its terminals from time
CD
t2 to time t3 as listed in tables 1 to 5.
6.6.3.4 Second low current interval
The purpose of the second low current interval is to provide a low current path to allow the
control device to reduce the voltage V across its terminals with a defined slew rate.
CD
From time t3 to time t4, the control gear shall provide a current path with a minimum current-
carrying capability of I . The current I may be carried through the bypass circuitry
CG_LC CG_LC
and/or through the lamp controller of the control gear (see Figure 2). During this interval, the
instantaneous value of the current I shall not exceed I (t) as given in Tables 1 to 5 except
CG CG
for a single small overshoot which has a maximum length of 10µs and a maximum amplitude
of I (t) * 1,5.
CG
Time t4 is when the input voltage of the control gear V exceeds the value V .
CG SW
From time t4 on, the impedance of the control gear is no longer defined; the bypass may be
deactivated.
From time t3 to time t5, the control device shall decrease its impedance Z The voltage V
CD. CD
across the control device is V from the time t5 at the latest.
CDmin
Table 1 – Nominal mains voltage 100 V, frequency 50 Hz or 60 Hz
Control gear: Control device:
Time related to previous zero
current, voltage and current, voltage and
crossing of mains voltage
impedance limits impedance limits
≤ 3 V: Z not
0 V ≤ V
CG CG
defined
3 V < V ≤ 6 V: Z ≤ 330 Ω
CG CG
First low
I and Z not defined
CD CD
current 0 µs to t1 = 520 µs
V > 6 V: I ≥ 18 mA
CG CG_LC
I < 18 mA recommended
CD
interval
V (t) ⋅ P
M CG
I (t) ≤ + 25 mA
CG
V
M
I ≥ 550 mA;
CG_HC
High
t1 = 520 µs to t2 = 790 µs I ≤ 500 mA
V ≤ V = 15 V if CD_HC
CG CG_HC
current
I ≤ 550 mA
CG
interval
t2 = 790 µs to t3 = 860 µs 18 mA ≤ I ≤ 550 mA I < 18 mA recommended
CG CD
I ≥ 18 mA
CG_LC
V (t) ⋅ P
M CG
Z decreases monotonically
t3 = 860 µs to t4;
Second I (t) ≤ + 25 mA CD
CG
to minimum
low
V
M
V = 55 V (-0 / +5 V)
SW
current
V decreases monotonically
CD
interval See Cl 6.6.3.4 for
to V
CDmin
overshoot.detail.
t4 to t5 = 1 200 µs
I and Z not defined
Operating CG CG
t > t5 = 1 200 µs Z = Minimum; V = V
CD CD CDmin
period
Table 2 – Nominal mains voltage 120 V; frequency 50 Hz or 60 Hz
Control gear: Control device:
Time related to previous zero
current, voltage and current, voltage and
crossing of mains voltage
impedance limits impedance limits
0 V ≤ V ≤ 3 V: Z not
CG CG
defined
3 V < V ≤ 6 V: Z ≤ 330 Ω
CG CG
First low
I and Z not defined
CD CD
current 0 µs to t1 = 500 µs
V > 6 V: I ≥ 18 mA
CG CG_LC I < 18 mA recommended
CD
interval
V (t) ⋅ P
M CG
I (t) ≤ + 25 mA
CG
V
M
I ≥ 550 mA;
CG_HC
High
t1 = 500 µs to t2 = 790 µs I ≤ 500 mA
V ≤ V = 15 V if CD_HC
CG CG_HC
current
I ≤ 550 mA
CG
interval
t2 = 790 µs to t3 = 860 µs 18 mA ≤ I ≤ 550 mA I < 18 mA recommended
CG CD
I ≥ 18 mA
CG_LC
V (t) ⋅ P Z decreases monotonically
t3 = 860 µs to t4; M CG
Second CD
I (t) ≤ + 25 mA
CG
to minimum
l
...