DM74ALS257M Fairchild Semiconductor, DM74ALS257M Datasheet

IC DATA SELECTOR/MUX 2-1 16SOIC

DM74ALS257M

Manufacturer Part Number
DM74ALS257M
Description
IC DATA SELECTOR/MUX 2-1 16SOIC
Manufacturer
Fairchild Semiconductor
Series
74ALSr
Type
Data Selector/Multiplexerr
Datasheet

Specifications of DM74ALS257M

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
Surface Mount
Package / Case
16-SOIC (3.9mm Width)
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
Surface Mount
Pin Count
16
Package Type
SOIC N
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
©1984 Fairchild Semiconductor Corporation
DM74ALS257, DM74ALS258 Rev. 1.2
DM74ALS257, DM74ALS258
3-STATE Quad 1-of-2-Line Data Selector/Multiplexer
Features
Ordering Information
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering number.
DM74ALS257M
DM74ALS257SJ
DM74ALS258M
Order Number
Switching specifications at 50pF
Switching specifications guaranteed over full
temperature 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
CC
Package
Number
range
M16D
M16A
M16A
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 Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
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 presents true data whereas the
DM74ALS258 presents inverted data to minimize propa-
gation delay time.
This 3-STATE output feature means that n-bit (paral-
leled) data selectors with up to 258 sources can be
implemented for data buses. It also permits the use of
standard TTL registers for data retention throughout the
system.
Package Description
www.fairchildsemi.com
May 2007
tm

Related parts for DM74ALS257M

DM74ALS257M Summary of contents

Page 1

... General four functions of two variables (one variable is common) Source programmable counters Ordering Information Package Order Number Number DM74ALS257M M16A DM74ALS257SJ M16D DM74ALS258M M16A Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering number. ©1984 Fairchild Semiconductor Corporation DM74ALS257, DM74ALS258 Rev ...

Page 2

... Connection Diagram Function Table Inputs Output Control Select HIGH Level L LOW Level X Don't Care Z High Impedance (OFF) ©1984 Fairchild Semiconductor Corporation DM74ALS257, DM74ALS258 Rev. 1.2 Output DM74ALS257 DM74ALS258 www.fairchildsemi.com ...

Page 3

... Logic Diagrams ©1984 Fairchild Semiconductor Corporation DM74ALS257, DM74ALS258 Rev. 1.2 DM74ALS257 DM74ALS258 3 www.fairchildsemi.com ...

Page 4

... HIGH Level Input Voltage IH V LOW Level Input Voltage IL I HIGH Level Output Current OH I LOW Level Output Current OL T Free Air Operating Temperature A ©1984 Fairchild Semiconductor Corporation DM74ALS257, DM74ALS258 Rev. 1.2 Parameter Parameter Min. 4 Rating 7V 7V 5.5V 0°C to +70°C – ...

Page 5

... HIGH Level Voltage Applied I OFF-State Output Current, OZL LOW Level Voltage Applied I Supply Current DM74ALS257 V CCH DM74ALS258 I Supply Current DM74ALS257 CCL DM74ALS258 I Supply Current DM74ALS257 CCZ DM74ALS258 ©1984 Fairchild Semiconductor Corporation DM74ALS257, DM74ALS258 Rev. 1.2 Conditions V 4.5V, I –18mA 4.5V I –2.6mA –0.4mA 4.5V ...

Page 6

... Output Enable Time to HIGH ZH Level t Output Enable Time to LOW ZL Level t Output Disable Time from HZ HIGH Level t Output Disable Time from LZ LOW Level ©1984 Fairchild Semiconductor Corporation DM74ALS257, DM74ALS258 Rev. 1.2 Conditions From V 4.5V to 5.5V, Data CC C 50pF 500 Data L Select Select ...

Page 7

... Physical Dimensions Dimensions are in millimeters unless otherwise noted. Figure 1. 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow ©1984 Fairchild Semiconductor Corporation DM74ALS257, DM74ALS258 Rev. 1.2 Package Number M16A 7 www.fairchildsemi.com ...

Page 8

... Physical Dimensions (Continued) Dimensions are in millimeters unless otherwise noted. Figure 2. 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide ©1984 Fairchild Semiconductor Corporation DM74ALS257, DM74ALS258 Rev. 1.2 Package Number M16D 8 www.fairchildsemi.com ...

Page 9

... TRADEMARKS The following are registered and unregistered trademarks and service marks Fairchild Semiconductor owns or is authorized to use and is not intended exhaustive list of all such trademarks ® ACEx Build it Now™ CorePLUS™ CROSSVOLT™ CTL™ Current Transfer Logic™ ® ...

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