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FOD050L_08 Datasheet, PDF (1/13 Pages) Fairchild Semiconductor – LVTTL/LVCMOS 3.3V High Speed Transistor Optocouplers | |||
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August 2008
FOD050L, FOD250L: Single Channel
FOD053L: Dual Channel
LVTTL/LVCMOS 3.3V High Speed Transistor Optocouplers
Features
â Low power consumption
â High speed
â Available in single channel 8-pin DIP (FOD250L),
8-pin SOIC (FOD050L) or dual channel 8-pin SOIC
(FOD053L)
â Superior CMR â CMH = 50kV/µs (typical) and
CML = 35kV/µs (typical)
â Guaranteed performance over temperature:
0°C to 70°C
â U.L. recognized (File # E90700)
â VDE pending
Applications
â Line receivers
â Pulse transformer replacement
â High speed logic ground isolation: LVTTL/LVCMOS
â Wide bandwidth analog coupling
Description
The FOD250L, FOD050L and FOD053L optocouplers
consist of an AlGaAs LED optically coupled to a high
speed photodetector transistor. These devices are speci-
ï¬ed for operation at a 3.3V supply voltage.
A separate connection for the bias of the photodiode
improves the speed by several orders of magnitude over
conventional
phototransistor optocouplers by reducing the base-
collector capacitance of the input transistor.
An internal noise shield provides superior common
mode rejection of CMH = 50kV/ms (typical) and CML =
35kV/ms (typical).
Schematics
Package Outlines
N/C 1
+2
8
V
CC
7
V
B
+1
V
F1
_2
8
V
CC
7
V
01
8
1
8
1
V
F
_3
N/C 4
6V
O
5 GND
_3
V
F2
+4
6
V
02
5 GND
8
1
Truth Table
8
1
FOD050L, FOD250L
FOD053L
LED
On
Off
VO
LOW
HIGH
©2003 Fairchild Semiconductor Corporation
FOD050L, FOD250L, FOD053L Rev. 1.0.2
www.fairchildsemi.com
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