DM74ALS640AN Fairchild Semiconductor, DM74ALS640AN Datasheet
DM74ALS640AN
Manufacturer Part Number
DM74ALS640AN
Description
IC TRANSCVR 8BIT N-INV 20DIP
Manufacturer
Fairchild Semiconductor
Series
74ALSr
Datasheet
1.DM74ALS640AN.pdf
(4 pages)
Specifications of DM74ALS640AN
Logic Type
Transceiver, Inverting
Number Of Elements
1
Number Of Bits Per Element
8
Current - Output High, Low
15mA, 24mA
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
20-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
74ALS640
© 2000 Fairchild Semiconductor Corporation
DM74ALS640AWM
DM74ALS640AN
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.
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Function Table
L
H
X
Order Number
LOW Logic Level
HIGH Logic Level
Either LOW or HIGH Logic Level
Package Number
M20B
N20A
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
G
H
L
L
Control
DS008640
Inputs
DIR
H
X
L
Features
Logic Diagram
Advanced Oxide-isolated Ion-implanted Schottky TTL
process
Switching performance is guaranteed over full tempera-
ture and V
Switching performance specified at 50 pF
PNP input design reduces input loading
Package Description
B Data to A Bus
A Data to B Bus
Operation
Isolation
CC
supply range
August 1985
Revised February 2000
www.fairchildsemi.com
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Datasheet:
DM74ALS640AN Summary of contents
Page 1
... Package Number 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 Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. ...
Page 2
Absolute Maximum Ratings Supply Voltage Input Voltage Control Inputs I/O ports Operating Free Air Temperature Range Storage Temperature Range Typical JA N Package M Package Recommended Operating Conditions Symbol Parameter V Supply Voltage CC V HIGH Level Input Voltage IH ...
Page 3
Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide Package Number M20B 3 www.fairchildsemi.com ...
Page 4
Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right ...