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74AC257 Datasheet(PDF) 1 Page - ON Semiconductor

No. de pieza 74AC257
Descripción Electrónicos  Quad 2?묲nput Multiplexer with 3?뭆tate Outputs
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Fabricante Electrónico  ONSEMI [ON Semiconductor]
Página de inicio  http://www.onsemi.com
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74AC257 Datasheet(HTML) 1 Page - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2006
March, 2006 − Rev. 7
1
Publication Order Number:
MC74AC257/D
MC74AC257, MC74ACT257
Quad 2−Input Multiplexer
with 3−State Outputs
The MC74AC257/74ACT257 is a quad 2−input multiplexer with
3−state outputs. Four bits of data from two sources can be selected
using a Common Data Select input. The four outputs present the
selected data in true (noninverted) form. The outputs may be switched
to a high impedance state by placing a logic HIGH on the common
Output Enable (OE) input, allowing the outputs to interface directly
with bus−oriented systems.
Multiplexer Expansion by Tying Outputs Together
Noninverting 3−State Outputs
Outputs Source/Sink 24 mA
′ACT257 Has TTL Compatible Inputs
w These devices are available in Pb−free package(s). Specifications herein
apply to both standard and Pb−free devices. Please see our website at
www.onsemi.com for specific Pb−free orderable part numbers, or
contact your local ON Semiconductor sales office or representative.
15
16
14
13
12
11
10
2
1
345
67
VCC
9
8
OE
I0c
I1c
Zc
I0d
I1d
Zd
SI0a
I1a
Za
I0b
I1b
Zb
GND
Figure 1. Pinout: 16−Lead Packages Conductors
(Top View)
http://onsemi.com
DIP−16
N SUFFIX
CASE 648
1
16
SO−16
D SUFFIX
CASE 751B
1
16
Device
Package
Shipping
ORDERING INFORMATION
MC74AC257N
PDIP−16
25 Units/Rail
MC74AC257D
SOIC−16
48 Units/Rail
MC74AC257DR2
2500 Tape & Reel
TSSOP−16
DT SUFFIX
CASE 948F
MC74AC257DT
TSSOP−16
96 Units/Rail
MC74AC257DTR2 TSSOP−16
SOIC−16
2500 Tape & Reel
MC74ACT257N
PDIP−16
25 Units/Rail
MC74ACT257D
SOIC−16
48 Units/Rail
MC74ACT257DR2
2500 Tape & Reel
MC74ACT257DT
TSSOP−16
96 Units/Rail
MC74ACT257DTR2 TSSOP−16
SOIC−16
2500 Tape & Reel
1
16
See general marking information in the device marking
section on page 8 of this data sheet.
DEVICE MARKING INFORMATION
1
16
EIAJ−16
M SUFFIX
CASE 966
MC74AC257MEL
EIAJ−16
2000 Tape & Reel
MC74ACT257M
EIAJ−16
MC74ACT257MEL
EIAJ−16
2000 Tape & Reel
50 Units/Rail


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