6N135, 6N136, HCPL4502
OPTOCOUPLERS/OPTOISOLATORS


SOES022A – JULY 1986 – REVISED APRIL 1998
1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
C0068 Compatible with TTL Inputs
C0068 High-Speed Switching...1 Mbit/s Typ
C0068 Bandwidth ...2 MHz Typ
C0068 High Common-Mode Transient
Immunity . . . 1000 V/µs Typ
C0068 High-Voltage Electrical
Insulation . . . 3000 Vdc Min
C0068 Open-Collector Output
C0068 UL Recognized...File Number 65085

description
These high-speed optocouplers are designed for use in analog or digital interface applications that require
high-voltage isolation between the input and output. Applications include line receivers that require high
common-mode transient immunity, and analog or logic circuits that require input-to-output electrical isolation.
The 6N135, 6N136, and HCPL4502 optocouplers each consists of a light-emitting diode and an integrated
photon detector composed of a photodiode and an open-collector output transistor. Separate connections are
provided for the photodiode bias and the transistor-collector output. This feature, which reduces the transistor
base-to-collector capacitance, results in speeds up to one hundred times that of a conventional phototransistor
optocoupler.
The 6N135 is designed for TTL/CMOS, TTL/LSTTL, and wide-band analog applications.
The 6N136 and HCPL4502 are designed for high-speed TTL/TTL applications. The HCPL4502 has no base
connection.
schematic
V
CC
BASE: 6N135, 6N136
OPEN: HCPL4502
OUTPUT
GND
8
7
6
5
2
3
ANODE
CATHODE
Copyright  1998, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

1
2
3
4
8
7
6
5
NC
ANODE
CATHODE
NC
V
CC
BASE/OPEN
†
OUTPUT
GND
6N135, 6N136, OR HCPL4502 PACKAGE
(TOP VIEW)
†
Terminal 7 is BASE on the 6N135 and
6N136 and OPEN on the HCPL4502
NC – No internal connection