DM74AS257M Fairchild Semiconductor, DM74AS257M Datasheet

IC DATA SELECTOR MUX QUAD 16SOIC

DM74AS257M

Manufacturer Part Number
DM74AS257M
Description
IC DATA SELECTOR MUX QUAD 16SOIC
Manufacturer
Fairchild Semiconductor
Series
74ASr
Type
Data Selector/Multiplexerr
Datasheet

Specifications of DM74AS257M

Circuit
4 x 2:1
Independent Circuits
1
Current - Output High, Low
15mA, 48mA
Voltage Supply Source
Single Supply
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DM74AS257MX
Manufacturer:
LT
Quantity:
5
© 2000 Fairchild Semiconductor Corporation
DM74AS257M
DM74AS257N
DM74AS258M
DM74AS258N
DM74AS257 • DM74AS258
3-STATE Quad 1 of 2 Line Data Selector/Multiplexers
General Description
These data selectors/multiplexers contain inverters and
drivers to supply full on-chip data selection to the four 3-
STATE outputs that can interface directly with data lines of
bus-organized systems. A 4-bit word selected from one of
two sources is routed to the four outputs. The DM74AS257
presents true data whereas the DM74AS258 presents
inverted data to minimize propagation delay time.
This 3-STATE output feature means that n-bit (paralleled)
data selectors with up to 300 sources can be implemented
for data buses. It also permits the use of standard TTL reg-
isters for data retention throughout the system.
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
M16A
N16E
N16E
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
DS006107
Features
Function Table
H
L
X
Z
CONTROL
OUTPUT
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,
low power Schottky, and advanced low power Schottky
TTL counterpart
Improved AC performance over Schottky, low power
Schottky, and advanced low power Schottky counter-
parts
3-STATE buffer-type output drive bus lines directly
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
High Impedance (OFF)
HIGH Level
H
L
L
L
L
Package Description
CC
SELECT
range
INPUTS
X
H
H
L
L
A
H
X
X
X
L
September 1986
Revised March 2000
B
H
X
X
X
L
www.fairchildsemi.com
AS257
OUTPUT Y
H
H
Z
L
L
AS258
H
H
Z
L
L

Related parts for DM74AS257M

DM74AS257M Summary of contents

Page 1

... It also permits the use of standard TTL reg- isters for data retention throughout the system. Ordering Code: Order Number Package Number DM74AS257M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow DM74AS257N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide ...

Page 2

Logic Diagrams DM74AS257 www.fairchildsemi.com DM74AS258 2 ...

Page 3

Absolute Maximum Ratings Supply Voltage Input Voltage Voltage Applied to Disabled Output Operating Free Air Temperature Range Storage Temperature Range Typical JA N Package Recommended Operating Conditions Symbol Parameter V Supply Voltage CC V HIGH Level Input Voltage ...

Page 4

DM74AS257 Switching Characteristics over recommended operating free air temperature range Symbol Parameter t Propagation Delay Time, PLH LOW-to-HIGH Level Output t Propagation Delay Time, PHL HIGH-to-LOW Level Output t Propagation Delay Time, PLH LOW-to-HIGH Level Output t Propagation Delay Time, ...

Page 5

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