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FOD2200

By datasheet - April 3rd, 2008

LOW INPUT CURRENT LOGIC GATE OPTOCOUPLERS

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LOW INPUT CURRENT LOGIC GATE OPTOCOUPLERS
FOD2200
DESCRIPTION
The FOD2200 is an optically coupled logic gate that combine an AlGaAs LED and an integrated high gain photo detector. The detector has a three state output stage and has a detector threshold with hysteresis. The three state output eliminates the need for a pullup resistor and allows for direct drive of data busses. The hysteresis provides differential mode noise immunity and eliminates the potential for output signal chatter. The Electrical and Switching Characteristics of the FOD2200 are guaranteed over the temperature range of 0 C to 85 C and a VCC range of 4.5 volts to 20 volts. Low IF and wide VCC range allow compatibility with TTL, LSTTL, and CMOS logic and result in lower power consumption compared to other high speed optocouplers. Logic signals are transmitted with a maximum propagation delay of 300 nsec. The FOD2200 is useful for isolating high speed logic interfaces, buffering of input and output lines, and implementing isolated line receivers in high noise environments.

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FEATURES
1 kV/ s Minimum Common Mode Rejection Compatible with LSTTL, TTL, and CMOS Logic Wide VCC Range (4.5 to 20 V) 2.5 Mbd Guaranteed over Temperature Low Input Current (1.6 mA) Three State Output (No Pullup Resistor Required) Guaranteed Performance from 0 C to 85 C Hysteresis Safety Approvals Pending UL, CSA, VDE VISO 5kVRMS

APPLICATION
Isolation of High Speed Logic Systems Computer-Peripheral Interfaces Microprocessor System Interfaces Ground Loop Elimination Pulse Transformer Replacement Isolated Buss Driver High Speed Line Receiver
NC 1 ANODE 2 CATHODE 3 NC 4 8 VCC 7 VO 6 VE 5 GND

SHIELD

Schematic
ICC 8 IF VF 2 IE 3 SHIELD 6 5 IO 7 VCC

VO VE GND

TRUTH TABLE (Positive Logic)
LED On Off On Off Enable H H L L Output Z Z H L

2004 Fairchild Semiconductor Corporation

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FOD2200 Datasheet Fairchild Download PDF

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