DM74ALS257N Fairchild Semiconductor, DM74ALS257N Datasheet

IC DATA SELECTOR/MUX 2-1 16DIP

DM74ALS257N

Manufacturer Part Number
DM74ALS257N
Description
IC DATA SELECTOR/MUX 2-1 16DIP
Manufacturer
Fairchild Semiconductor
Series
74ALSr
Type
Data Selector/Multiplexerr
Datasheet

Specifications of DM74ALS257N

Circuit
4 x 2:1
Independent Circuits
1
Current - Output High, Low
2.6mA, 24mA
Voltage Supply Source
Single Supply
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
16-DIP (0.300", 7.62mm)
Logical Function
Mux
Configuration
4 x 2:1
Number Of Inputs
8
Number Of Outputs
4
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
5.5V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Through Hole
Pin Count
16
Package Type
PDIP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
74ALS257
© 2000 Fairchild Semiconductor Corporation
DM74ALS257M
DM74ALS257SJ
DM74ALS257N
DM74ALS258M
DM74ALS258N
DM74ALS257 • DM74ALS258
3-STATE 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 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
DM74ALS257
DM74ALS258 presents inverted data to minimize propaga-
tion delay time.
This 3-STATE output feature means that n-bit (paralleled)
data selectors with up to 258 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
presents
Package Number
M16A
M16D
M16A
N16E
N16E
true
data
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 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
whereas
DS006227
the
Features
Function Table
Control
H
L
X
Z
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
and low power Schottky TTL counterpart
Improved AC performance over Schottky and low power
Schottky counterparts
3-STATE buffer-type outputs 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)
H
HIGH Level
L
L
L
L
Package Description
Select
Inputs
H
H
X
L
L
CC
range
A
X
H
X
X
L
B
X
X
X
H
L
DM74ALS257 DM74ALS258
April 1984
Revised February 2000
Z
H
H
L
L
www.fairchildsemi.com
Output Y
H
H
Z
L
L

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DM74ALS257N Summary of contents

Page 1

... M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow DM74ALS257SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide DM74ALS257N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide DM74ALS258M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow ...

Page 2

Logic Diagrams www.fairchildsemi.com DM74ALS257 DM74ALS258 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 M Package Recommended Operating Conditions Symbol Parameter V Supply Voltage CC V HIGH Level Input Voltage ...

Page 4

Switching Characteristics DM74ALS257 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 Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide www.fairchildsemi.com Package Number M16D 6 ...

Page 7

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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