Datasheet

FOD050L, FOD250L, FOD053L — LVTTL/LVCMOS 3.3V High Speed Transistor Optocouplers
©2003 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD050L, FOD250L, FOD053L Rev. 1.0.3
July 2009
FOD050L, FOD250L: Single Channel
FOD053L: Dual Channel
LVTTL/LVCMOS 3.3V High Speed Transistor Optocouplers
Features
■ Low power consumption
■
High speed
■
Available in single channel 8-pin DIP (FOD250L),
8-pin SOIC (FOD050L) or dual channel 8-pin SOIC
(FOD053L)
■
Superior CMR – CM
H
= 50kV/µs (typical) and
CM
L
= 35kV/µs (typical)
■
Guaranteed performance over temperature:
0°C to 70°C
■
U.L. recognized (File # E90700)
■
VDE pending
Applications
■
Line receivers
■
Pulse transformer replacement
■
High speed logic ground isolation: LVTTL/LVCMOS
■
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-
fied 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 CM
H
= 50kV/ms (typical) and CM
L
=
35kV/ms (typical).
Schematics Package Outlines
LED
On
Off
Truth Table
V
O
LOW
HIGH
1
2
3
4 5
6
7
8
+
_
V
F1
V
CC
V
01
V
02
GND
V
F2
_
+
FOD053L
1
2
3
4 5
6
7
8
+
_
V
F
V
CC
V
B
V
O
GNDN/C
N/C
FOD050L, FOD250L
8
8
1
8
1
8
1
1