2
Photocouplers
LTV-0701
BNC-OD-C131/A4
Created Date : 9/18/2009
Revison : 12/5/2011
1. DESCRIPTION
These high gain series couplers use a light emitter diode and an integrated high gain photo detector to provide extremely
high current transfer ratio between input and output. Separate pins for the photodiode and output stage result in TTL
compatible saturation voltage and high speed operation. Where desired the Vcc and Vo terminals may be tied together to
achieve conventional photo darlington operation. A base access terminal allows a gain bandwidth adjustment to be made.
1.1 Features
SO8 package
High current transfer ratio – 2000% typical.
Low input current requirements – 0.5mA
High output current – 60mA
CTR guarantee – 0~70℃.
Instantaneous common mode rejection 10KV/μsec
TTL compatible output – 0.1V V
OL
typical
1.2 Applications
Digital logic ground isolation
Low input current line receiver
Telephone ring detector
EIA-RS-232C line receiver
Current loop receiver
High common mode noise line receiver
1.3 Functional Diagram
NC
ANODE
V
cc
V
B
Cathode
NC
V
o
GND
Truth Table (Positive Logic)
LED OUT
ON L
OFF H
A 0.1µF bypass Capacitor must be
connected between Pin8 and Pin5
