Datasheet

LITE-ON TECHNOLOGY CORPORATION
Property of Lite-on Only
Part No. :
6N138 / 6N139 series
Page :
1
of
15
BNS-OD-C131/A4
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.
Dec.2008
Functional Diagram
NC
ANODE
Cathode
NC
V
O
V
B
GND
V
CC
Truth Table (Positive Logic)
LED
OUT
ON
L
OFF
H
A 0.1μF bypass Capacitor must
be connected between Pin8 and
Pin5
6N138 / 6N139
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
Features
 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
 UL, CSA approved.
6N138, 6N139
Single Channel, High Speed Optocouplers