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DM74ALS640AWM データシート(PDF) 1 Page - Fairchild Semiconductor

部品番号 DM74ALS640AWM
部品情報  Inverting Octal Bus Transceiver
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メーカー  FAIRCHILD [Fairchild Semiconductor]
ホームページ  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

DM74ALS640AWM データシート(HTML) 1 Page - Fairchild Semiconductor

  DM74ALS640AWM Datasheet HTML 1Page - Fairchild Semiconductor DM74ALS640AWM Datasheet HTML 2Page - Fairchild Semiconductor DM74ALS640AWM Datasheet HTML 3Page - Fairchild Semiconductor DM74ALS640AWM Datasheet HTML 4Page - Fairchild Semiconductor  
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© 2000 Fairchild Semiconductor Corporation
DS008640
www.fairchildsemi.com
August 1985
Revised February 2000
DM74ALS640A
Inverting Octal Bus Transceiver
General Description
This inverting octal bus transceiver is designed for asyn-
chronous 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 tempera-
ture and VCC supply range
s Switching performance specified at 50 pF
s PNP input design reduces input loading
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Logic Diagram
Function Table
L
= LOW Logic Level
H
= HIGH Logic Level
X
= Either LOW or HIGH Logic Level
Order Number
Package Number
Package Description
DM74ALS640AWM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
DM74ALS640AN
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Control
Inputs
Operation
G
DIR
LL
B Data to A Bus
LH
A Data to B Bus
HX
Isolation


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