dm74als157 Fairchild Semiconductor, dm74als157 Datasheet

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dm74als157

Manufacturer Part Number
dm74als157
Description
Quad 1-of-2 Line Data Selector/multiplexer
Manufacturer
Fairchild Semiconductor
Datasheet
© 2000 Fairchild Semiconductor Corporation
DM74ALS157M
DM74ALS157SJ
DM74ALS157N
DM74ALS158N
DM74ALS157 • DM74ALS158
Quad 1-of-2 Line Data Selector/Multiplexer
General Description
These data selectors/multiplexers contain inverters and
drivers to supply full on-chip data selection to the four out-
put gates. A separate strobe input is provided. A 4-bit word
is selected from one of two sources and is routed to the
four outputs. The ALS157 presents true data whereas the
ALS158 presents inverted data to minimize propagation
delay time.
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Order Number
Package Number
M16A
M16D
N16E
N16E
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
DS006205
Features
Function Table
H
L
X
Strobe Select
Switching specifications at 50 pF
Switching specifications guaranteed over full tempera-
ture and V
Advanced oxide-isolated, ion-implanted Schottky TTL
process
Functionally and pin for pin compatible with Schottky
and low power Schottky TTL counterpart
Improved AC performance over Schottky and low power
Schottky counterparts
Expand any data input point
Multiplex dual data buses
General four functions of two variables (one variable is
common)
Source programmable counters
LOW Level
Don't Care
H
HIGH Level
L
L
L
L
Package Description
Inputs
X
H
H
L
L
CC
range
A
H
X
L
X
X
B
H
X
X
X
L
DM74ALS157 DM74ALS158
April 1984
Revised February 2000
H
H
L
L
L
www.fairchildsemi.com
Output Y
H
H
H
L
L

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dm74als157 Summary of contents

Page 1

... DM74ALS157 • DM74ALS158 Quad 1-of-2 Line Data Selector/Multiplexer General Description These data selectors/multiplexers contain inverters and drivers to supply full on-chip data selection to the four out- put gates. A separate strobe input is provided. A 4-bit word is selected from one of two sources and is routed to the four outputs. The ALS157 presents true data whereas the ALS158 presents inverted data to minimize propagation delay time ...

Page 2

... Logic Diagrams www.fairchildsemi.com DM74ALS157 DM74ALS158 2 ...

Page 3

... V 4.5V to 5. 5.5V 5.5V 5.5V 5.5V V 2.25V CC O 5.5V DM74ALS157 CC 4.5V DM74ALS158 From (Input) DM74ALS157 Conditions To (Output) Min Data 4. 500 L 2 Strobe Select Max Units 5 0 ...

Page 4

Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow www.fairchildsemi.com Package Number M16A 4 ...

Page 5

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M16D 5 www.fairchildsemi.com ...

Page 6

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-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 ...

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