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SL74HC640

System Logic Semiconductor
Part Number SL74HC640
Manufacturer System Logic Semiconductor
Description Octal 3-State Inverting Bus Transceiver
Published Apr 16, 2005
Detailed Description SL74HC640 Octal 3-State Inverting Bus Transceiver High-Performance Silicon-Gate CMOS The SL74HC640 is identical in pino...
Datasheet PDF File SL74HC640 PDF File

SL74HC640
SL74HC640

Overview
SL74HC640 Octal 3-State Inverting Bus Transceiver High-Performance Silicon-Gate CMOS The SL74HC640 is identical in pinout to the LS/ALS640.
The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs.
The SL74HC640 is a 3 -state transceiver that is used for 2 -way asynchronous communication between data buses.
The device has an active-low Output Enable pin, which is used to place the I/O ports into high-impedance states.
The Direction control determines whether data flows from A to B or from B to A.
• Outputs Directly Interface to CMOS, NMOS, and TTL • Operating Voltage Range: 2.
0 to 6.
0 V • Low Input Current: 1.
0 µA • High Noise Immunity Characteristic of CMOS Devices ORDERING INFORMATION SL74HC640N Plastic SL74HC640D SOIC TA = -55° to 125° C for all packages PIN ASSIGNMENT LOGIC DIAGRAM FUNCTION TABLE Control Inputs PIN 20=VCC PIN 10 = GND Output Enable L Direction L Operation Data Transmitted from Bus B to Bus A ...


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