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DM74ALS640A

Fairchild Semiconductor
Part Number DM74ALS640A
Manufacturer Fairchild Semiconductor
Description Inverting Octal Bus Transceiver
Published Apr 1, 2005
Detailed Description DM74ALS640A Inverting Octal Bus Transceiver August 1985 Revised February 2000 DM74ALS640A Inverting Octal Bus Transcei...
Datasheet PDF File DM74ALS640A PDF File

DM74ALS640A
DM74ALS640A


Overview
DM74ALS640A Inverting Octal Bus Transceiver August 1985 Revised February 2000 DM74ALS640A Inverting Octal Bus Transceiver General Description This inverting octal bus transceiver is designed for asynchronous two-way communication between data busses.
This device transmits data from the A bus to the B bus or from the B bus to the A bus depending upon the level at the direction control (DIR) input.
The enable input (G) can be used to disable the device so the busses are effectively isolated.
Features s Advanced Oxide-isolated Ion-implanted Schottky TTL process s Switching performance is guaranteed over full temperature and VCC supply range s Switching performance specified at 50 pF s PNP input design reduces input loading Ordering Code: Order Number DM74ALS640AWM DM74ALS640AN Package Number M20B N20A Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.
300 Wide 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.
300 Wide Devices also available in Tape and Reel.
Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram Logic Diagram Function Table Control Inputs G L L H L = LOW Logic Level H = HIGH Logic Level X = Either LOW or HIGH Logic Level Operation DIR L H X B Data to A Bus A Data to B Bus Isolation © 2000 Fairchild Semiconductor Corporation DS008640 www.
fairchildsemi.
com DM74ALS640A Absolute Maximum Ratings(Note 1) Supply Voltage Input Voltage Control Inputs I/O ports Operating Free Air Temperature Range Storage Temperature Range Typical θJA N Package M Package 53.
0°C/W 72.
0°C/W 7V 5.
5V 0°C to +70°C −65°C to +150°C Note 1: The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed.
The device should not be operated at these limits.
The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions for actual d...


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