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74AC257 PDF预览

74AC257

更新时间: 2024-11-19 04:28:43
品牌 Logo 应用领域
安森美 - ONSEMI 复用器
页数 文件大小 规格书
12页 182K
描述
Quad 2−Input Multiplexer with 3−State Outputs

74AC257 数据手册

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MC74AC257, MC74ACT257  
Quad 2−Input Multiplexer  
with 3−State Outputs  
The MC74AC257/74ACT257 is a quad 2input multiplexer with  
3state 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 busoriented systems.  
http://onsemi.com  
DIP16  
N SUFFIX  
CASE 648  
Multiplexer Expansion by Tying Outputs Together  
Noninverting 3State Outputs  
16  
1
Outputs Source/Sink 24 mA  
ACT257 Has TTL Compatible Inputs  
SO16  
w These devices are available in Pbfree package(s). Specifications herein  
apply to both standard and Pbfree devices. Please see our website at  
www.onsemi.com for specific Pbfree orderable part numbers, or  
contact your local ON Semiconductor sales office or representative.  
D SUFFIX  
CASE 751B  
16  
1
V
OE  
I
I
Z
I
I
Z
d
CC  
0c  
1c  
c
0d  
1d  
TSSOP16  
DT SUFFIX  
CASE 948F  
16  
15  
14  
13  
12  
11  
10  
9
16  
1
EIAJ16  
M SUFFIX  
CASE 966  
16  
1
2
3
4
5
6
7
8
1
S
I
0a  
I
1a  
Z
I
0b  
I
1b  
Z
b
GND  
a
ORDERING INFORMATION  
Figure 1. Pinout: 16Lead Packages Conductors  
Device  
Package  
Shipping  
(Top View)  
MC74AC257N  
MC74ACT257N  
MC74AC257D  
MC74ACT257D  
MC74AC257DR2  
25 Units/Rail  
25 Units/Rail  
PDIP16  
PDIP16  
SOIC16  
48 Units/Rail  
48 Units/Rail  
SOIC16  
SOIC16  
2500 Tape & Reel  
MC74ACT257DR2  
MC74AC257DT  
2500 Tape & Reel  
96 Units/Rail  
SOIC16  
TSSOP16  
MC74ACT257DT  
MC74AC257DTR2  
96 Units/Rail  
TSSOP16  
TSSOP16  
2500 Tape & Reel  
MC74ACT257DTR2  
MC74ACT257M  
2500 Tape & Reel  
50 Units/Rail  
TSSOP16  
EIAJ16  
MC74AC257MEL  
MC74ACT257MEL  
2000 Tape & Reel  
2000 Tape & Reel  
EIAJ16  
EIAJ16  
DEVICE MARKING INFORMATION  
See general marking information in the device marking  
section on page 8 of this data sheet.  
© Semiconductor Components Industries, LLC, 2006  
1
Publication Order Number:  
March, 2006 Rev. 7  
MC74AC257/D  

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