6N138 Datasheet, PDF (1/15 Pages) Toshiba Semiconductor – IRED & PHOTO IC (CURRENT LOOP DRIVER, LOW INPUT CURRENT LINE RECEIVER, COMS LOGIC INTERFACE)

LITE-ON TECHNOLOGY CORPORATION
Property of Lite-on Only
6N138, 6N139
Single Channel, High Speed Optocouplers
Description
Dec.2008
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.
Functional Diagram
NC
V_CC
ANODE
V_B
Cathode
V_O
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.
NC
GND
6N138 / 6N139
Truth Table (Positive Logic)
LED
OUT
ON
L
OFF
H
A 0.1µF bypass Capacitor must
be connected between Pin8 and
Pin5
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
Part No. : 6N138 / 6N139 series
BNS-OD-C131/A4
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