Siemens IL755B Datasheet

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Ω

IL755B

BIDIRECTIONAL INPUT

DARLINGTON OPTOCOUPLER

FEATURES

• Very High Current Transfer Ratio (500% min.)
IL755B-1: 750% at I
IL755B-2: 1000% at I

•BV

CEO

>60 V

• Isolation Test Voltage, 5300 VAC

2 mA, V

F=

=1 mA, V

F

CE

=5 V

CE

=5 V

RMS

• AC or Polarity Insensitive Inputs

• No Base Connection

• High Isolation Resistance, 10

12

• Low Coupling Capacitance

• Standard Plastic DIP Package

• Underwriters Lab Approval #E52744

• VDE #0884 Available with Option 1

DESCRIPTION

The IL755B is a bidirectional input, optically cou­pled isolator consisting of two Gallium Arsenide
infrared emitters and a silicon photodarlington sen­sor.

Maximum Ratings (at 25 ° C)
Emitter (Drive Circuit)

Continuous Forward Current.........................60 mA

Power Dissipation at 25 °
Derate Linearly from 55 °

C..........................100 mW

C....................1.33 mW/ ° C

Detector

Collector-Emitter Breakdown Voltage ..............60 V

Emitter-Collector Breakdown Voltage ..............12 V

Power Dissipation at 25 °
Derate Linearly from 25 °

C Ambient...........200 mW

C......................2.6 mW/ ° C

Package

Isolation Test V oltage

(PK), t=1 sec..................................5300 VAC

Dissipation at 25 ° C.....................................250 mW

Derate Linearly from 25 °

(2)

C

.................3.3 mW/ ° C

Creepage................................................ 7 min mm

Clearance................................................7 min mm

Isolation Resistance

T

=25 ° C.................................................. ≥ 10

A

T

=100 ° C................................................ ≥ 10

A

Storage Temperature

Operating Temperature ................–55 °

Lead Soldering Time at 260 °

(2)

..............–55 ° C to +150 ° C

C to +100 ° C

C....................10 sec.

12
11

Dimensions in inches (mm)

248 (6.30)
256 (6.50)

4°

Typ.

.018 (0.45)
.022 (0.55)

Electrical Characteristics (T

Emitter

Forward Voltage

Detector

(2)

Breakdown Voltage,
Collector-Emitter

Leakage Current,
Collector-Emitter

Package

RMS

Current Transfer

(2)

Ratio
IL755B-1

IL755B-2

Ω
Ω

Saturation Voltage,
Collector-Emitter

Turn-On Time t
Turn-Off Time t

5

12

pin one

ID.

6

.130 (3.30)
.138 (3.50)

.032 (0.80)

Min.

.031 (0.80)
.035 (0.90)

.100 (2.54) Typ.

=25 ° C)

A

Anode/

Cathode

Catho e/

Anode

NC

1
2
3

.300 (7.62)

18° Typ.

.010 (.25)
.014 (.35)

.300 (7.62)
.347 (8.82)

Typ.

3

4

.335 (8.50)
.343 (8.70)

.039
(1.00)
Min.

Symbol Min. Typ. Max. Unit Condition

(1)

V

BV

I

CEO

F

CEO

60 75 V I

1.25 1.5 V I

1.0 100 nA V

CTR

V

on

off

CEsat

750
1000

1.0 V I

200 µ sV
200 µ sI

%
%

Base

6

Collector

5

Emitter

4

.114(2.90

.130 (3.30

=10 mA

F

=1 mA,

C

I

=0

F

=10 V,

CE

I

=0

F

I

= ± 2 mA,

F

V

=5 V

CE

I

= ± 1 mA,

F

V

=5 V

CE

=10 mA,

C

I

= ± 10 mA

F

=10 V

CC

=

±

2 mA,

F

R

=100 Ω

L

Notes:

1. Indicates JEDEC registered data.

5–1

V

C

C

V

C

C

0

V

V

C
V
A

V

V

Figure 1. LED forward current versus forward voltage

60
40
20

25°

85°

0

–55°C

-20

-40

-60

-1.5 -1.0 -0.5 0.0 0.5 1.0 1.5

IF - LED Forward Current - mA

VF - LED Forward Voltage - V

Figure 2. Normalized non-saturated and saturated
CTRce versus LED current

4.0
Normalized to:

3.5

Ta = 25°

3.0

Vce = 5 V
IF = 1 mA

2.5

2.0

101.1

Vce = 5 V

Vce = 1

100

1.5

1.0

0.5

0.0

NCTRce - Normalized CTRce

IF - LED Current - mA

Figure 5. Normalized non-saturated and saturated
collector-emitter current versus LED current

10

Normalized to:

Ta = 25°C
IF = 10 mA

1

Vce = 5 V

.1

.01

NIce - Normalized Ice

.001

IF - LED Current - mA

Vce = 5

Vce = 1V

101.1

100

Figure 6. Low to high propagation delay versus
collector load resistance and LED current

80

Ta = 25°C, Vcc = 5
Vth = 1.5 V

60

40

Delay - µs

20

0

tpLH - Low/High Propagation

0 5 10 15 20

IF - LED Current - mA

1KΩ

220Ω

470Ω

100Ω

Figure 3. Normalized non-saturated and saturated
CTRce versus LED current

3.0
Normalized to:

2.5

2.0

1.5

1.0

0.5

0.0

NCTRce - Normalized CTRce

Ta = 25°
Vce = 5 V
IF = 2 mA

Vce = 5 V

Vce = 1 V

100101.1

IF - LED Current - mA

Figure 4. Normalized non-saturated and saturated
Ice versus LED current

10

Normalized to:

Ta = 25°
Vce = 5

10

IF = 2 m

1

.1

NIce - Normalized Ice

.01

IF - LED Current - mA

Vce = 5

Vce = 1

100101.1

Figure 7. High to low propagation delay versus
collector load resistance and LED current

20

15

10

delay - µs

5

0

tpHL - High/Low Propagation

0 5 10 15 20

1KΩ

100Ω

IF - LED Current - mA

Ta = 25°C
Vcc = 5 V

Vth = 1.5 V

Figure 8. Switching waveform Figure 9. Normalized non-satu-

rated and saturated CTRce ver­sus LED current

I

F

F=10 KHz,
DF=50%

t

D

t

O

R

t

PLH

IF=2 mA

VCC=10 V

R

L

V

O

VTH=1.5 V

t

PHL

t

t

S

F

5–2

IL755B