HP 4N45 Datasheet

High Gain Darlington Output
Optocouplers

Technical Data

Features

• High Current Transfer
Ratio–1500% Typical

• Low Input Current
Requirement–0.5 mA

• Performance Guaranteed
over 0°C to 70°C
Temperature Range

• Internal Base-Emitter
Resistor Minimizes Output
Leakage

• Gain-Bandwidth Adjustment
Pin

• Safety Approval

UL Recognized -2500 V rms for

1 Minute

CSA Approved

Applications

• Telephone Ring Detector

• Digital Logic Ground
Isolation

• Low Input Current Line
Receiver

• Line Voltage Status
Indicator–Low Input Power
Dissipation

• Logic to Reed Relay Interface

• Level Shifting

• Interface Between Logic
Families

The excellent performance over
temperature results from the
inclusion of an integrated emitter­base bypass resistor which shunts
photodiode and first stage
leakage currents as well as
bleeding off excess base drive to
ground. External access to the
second stage base provides the
capability for better noise
rejection than a conventional
photodarlington detector. An
external resistor or capacitor at
the base can be added to make a
gain-bandwidth or input current
threshold adjustment. The base
lead can also be used for
feedback.

The 4N46 has a 350% minimum
CTR at an input current of only

0.5 mA making it ideal for use in
low input current applications
such as MOS, CMOS and low
power logic interfacing. Compat­ibility with high voltage CMOS
logic systems is assured by the
20 V minimum breakdown
voltage of the output transistor
and by the guaranteed maximum
output leakage (IOH) at 18 V.

The 4N45 has a 250% minimum
CTR at 1.0 mA input current and
a 7 V minimum breakdown
voltage rating.

Selection for lower input current
down to 250 µA is available upon
request.

4N45
4N46

*JEDEC Registered Data
**JEDEC Registered up to 70°C.

Functional Diagram

CAUTION: It is advised that normal static precautions be taken in handling and assembly of this component to
prevent damage and/or degradation which may be induced by ESD.

TRUTH TABLE
(POSITIVE LOGIC)

LED OUTPUT

ON L

OFF H

5

1

2

3

4

6

ANODE

CATHODE

V

B

GND

V

O

Description

The 4N45/46 optocouplers
contain a GaAsP light emitting
diode optically coupled to a high
gain photodetector IC.

The high current transfer ratio at
very low input currents permits
circuit designs in which adequate
margin can be allowed for the
effects of optical coupling
variations.

5965-3576E1-434

Ordering Information

Specify part number followed by Option Number (if desired).

4N45#XXX

300 = Gull Wing Surface Mount Lead Option
500 = Tape/Reel Package Option (1 K min)

Option data sheets available. Contact your Hewlett-Packard sales representative or authorized distributor for
information.

Outline Drawing

Outline Drawing – Option 300

9.40 (0.370)

9.90 (0.390)

PIN
ONE
DOT

HPXXXX

YYWW

TYPE
NUMBER

DATE CODE

2.16 (0.085)

2.54 (0.100)

2.28 (0.090)

2.80 (0.110)

(0.020)
(0.040)

0.45 (0.018)

0.65 (0.025)

4.70 (0.185) MAX.

2.66 (0.105) MIN.

6.10 (0.240)

6.60 (0.260)

0.20 (0.008)

0.33 (0.013)

5° TYP.

7.36 (0.290)

7.88 (0.310)

DIMENSIONS IN MILLIMETERS AND (INCHES).

1

2

3

56

321

CATHODE

ANODE

GND

V

V

B

O

1.78 (0.070) MAX.

R

U

4

UL
RECOGNITION

5

4

6

Schematic

I

F

1

2

V

F

ANODE

CATHODE

+

–

V

B

5

4

GND

V

O

I

O

6

TRUTH TABLE

(POSITIVE LOGIC)

LED

ON

OFF

OUTPUT

L
H

4N45 Outline – Option 300

4.19

(0.165)

2.29

(0.090)

2.54

(0.100)

TYP.

0.635 ± 0.130

(0.025 ± 0.005)

9.65 ± 0.25

(0.380 ± 0.010)

7.62 ± 0.25

(0.300 ± 0.010)

0.635 ± 0.25

(0.025 ± 0.010)

12° NOM.

0.20 (0.008)

0.30 (0.013)

1.78

(0.070)

MAX.

9.65 ± 0.25

(0.380 ± 0.010)

6.35 ± 0.25

(0.250 ± 0.010)

DIMENSIONS IN mm (INCHES)
TOLERANCES: xx.xx = 0.01
 xx.xxx = 0.001
(unless otherwise specified)

LEAD COPLANARITY
MAXIMUM: 0.102 (0.004)

[3] [5]

1.194 (0.047)

1.778 (0.070)

4.826 

(0.190)

TYP.

9.398 (0.370)

9.906 (0.390)

MAX.

PAD LOCATION (FOR REFERENCE ONLY)

0.381 (0.015)

0.635 (0.025)

1-435

Regulatory Information

The 4N45 and 4N46 have been
approved by the following
regulatory organizations:

UL

Recognized under UL 1577,
Component Recognition
Program, File E55361.

CSA

Approved under CSA Component
Acceptance Notice #5, File CA

88324.

240

∆T = 115°C, 0.3°C/SEC

0

∆T = 100°C, 1.5°C/SEC

∆T = 145°C, 1°C/SEC

TIME – MINUTES

TEMPERATURE – °C

220
200
180
160
140
120
100

80
60
40
20

0

260

123456789101112

Thermal Profile (Option #300)

Figure 1. Maximum Solder Reflow Thermal Profile.
(Note: Use of non-chlorine activated fluxes is recommended.)

Insulation and Safety Related Specifications

Parameter Symbol Value Units Conditions

Min. External Air Gap L(IO1) 7.1 mm Measured from input terminals to output
(External Clearance) terminals, shortest distance through air

Min. External Tracking Path L(IO2) 7.4 mm Measured from input terminals to output
(External Creepage) terminals, shortest distance path along body

Min. Internal Plastic Gap 0.08 mm Through insulation distance, conductor to
(Internal Clearance) conductor, usually the direct distance

between the photoemitter and photodetector
inside the optocoupler cavity

Tracking Resistance CTI 200 Volts DIN IEC 112/VDE 0303 PART 1
(Comparative Tracking Index)

Isolation Group IIIa Material Group (DIN VDE 0110, 1/89, Table 1)

Option 300 – surface mount classification is Class A in accordance with CECC 00802.

Absolute Maximum Ratings

Storage Temperature, TS............................................. -55°C to +125°C

Operating Temperature, TA........................................... -40°C to +85°C

Lead Solder Temperature, max .......................................... 260°C for 10 s

(1.6 mm below seating plane)

Average Input Current, IF......................................................... 20 mA

[1]

Peak Input Current, IF................................................................... 40 mA

(50% duty cycle, 1 ms pulse width)

Peak Transient Input Current, IF...................................................... 1.0 A

(≤ 1 µs pulse width, 300 pps)

Reverse Input Voltage, VR.................................................................5 V

Input Power Dissipation, PI.................................................... 35 mW

[2]

Output Current, IO (Pin 5) ...................................................... 60 mA

[3]

Emitter-Base Reverse Voltage (Pins 4-6).......................................... 0.5 V

Output Voltage, VO (Pin 5-4)

4N45 ................................................................................. -0.5 to 7 V

4N46 ............................................................................... -0.5 to 20 V

Output Power Dissipation ..................................................... 100 mW

[4]

Infrared and Vapor Phase Reflow Temperature

(Option #300) .......................................... see Fig. 1, Thermal Profile

1-436