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74F257ASC PDF预览

74F257ASC

更新时间: 2024-10-25 22:22:31
品牌 Logo 应用领域
美国国家半导体 - NSC 复用器
页数 文件大小 规格书
8页 159K
描述
Quad 2-Input Multiplexer with TRI-STATE Outputs

74F257ASC 数据手册

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November 1994  
54F/74F257A  
Quad 2-Input Multiplexer with TRI-STATE Outputs  
É
General Description  
Features  
Y
Multiplexer expansion by tying outputs together  
The ’F257A is a quad 2-input multiplexer with TRI-STATE  
outputs. Four bits of data from two sources can be selected  
using a Common Data Select input. The four outputs pres-  
ent the selected data in true (non-inverted) form. The out-  
puts may be switched to a high impedance state with a  
HIGH on the common Output Enable (OE) input, allowing  
the outputs to interface directly with bus-oriented systems.  
Y
Non-inverting TRI-STATE outputs  
Y
Input clamp diodes limit high-speed termination effects  
Y
Guaranteed 4000V minimum ESD protection  
Package  
Number  
Commercial  
74F257APC  
Military  
Package Description  
N16E  
J16A  
16-Lead (0.300 Wide) Molded Dual-In-Line  
×
54F257ADM (Note 2)  
16-Lead Ceramic Dual-In-Line  
74F257ASC (Note 1)  
74F257ASJ (Note 1)  
M16A  
M16D  
W16A  
E20A  
16-Lead (0.150 Wide) Molded Small Outline, JEDEC  
×
16-Lead (0.300 Wide) Molded Small Outline, EIAJ  
×
54F257AFM (Note 2)  
54F257ALL (Note 2)  
16-Lead Cerpack  
20-Lead Ceramic Leadless Chip Carrier, Type C  
e
Note 1: Devices also available in 13 reel. Use suffix  
SCX and SJX.  
×
Note 2: Military grade device with environmental and burn-in processing. Use suffix  
e
DMQB, FMQB and LMQB.  
Logic Symbols  
Connection Diagrams  
Pin Assignment  
for DIP, SOIC and Flatpak  
Pin Assignment  
for LCC  
TL/F/9507–3  
IEEE/IEC  
TL/F/9507–1  
TL/F/9507–2  
TL/F/9507–5  
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.  
C
1995 National Semiconductor Corporation  
TL/F/9507  
RRD-B30M75/Printed in U. S. A.  

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