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MC74VHC257

更新时间： 2024-11-04 05:22:11
品牌 Logo 应用领域
安森美 - ONSEMI 复用器
页数 文件大小 规格书
8页 99K
描述
Quad 2-Channel Multiplexer with 3-State Outputs

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MC74VHC257 数据手册

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MC74VHC257  
Quad 2−Channel Multiplexer  
with 3−State Outputs  
The MC74VHC257 is an advanced high speed CMOS quad  
2−channel multiplexer fabricated with silicon gate CMOS technology.  
It achieves high speed operation similar to equivalent Bipolar  
Schottky TTL while maintaining CMOS low power dissipation.  
It consists of four 2−input digital multiplexers with common select  
(S) and enable (OE) inputs. When (OE) is held High, selection of data  
is inhibited and all the outputs go Low.  
The select decoding determines whether the A or B inputs get routed  
to the corresponding Y outputs.  
The inputs tolerate voltages up to 7 V, allowing the interface of 5 V  
systems to 3 V systems.  
http://onsemi.com  
MARKING DIAGRAMS  
16  
1
9
8
VHC257  
AWLYWW  
SO−16  
D SUFFIX  
CASE 751B  
• High Speed: t = 4.1 ns (Typ) at V = 5.0 V  
PD  
CC  
• Low Power Dissipation: I = 4.0 mA (Max) at T = 25°C  
CC  
A
16  
9
• High Noise Immunity: V  
= V = 28% V  
NIL CC  
NIH  
• Power Down Protection Provided on Inputs  
• Balanced Propagation Delays  
• Designed for 2.0 V to 5.5 V Operating Range  
VHC257  
ALYW  
TSSOP−16  
DT SUFFIX  
CASE 948F  
1
• Low Noise: V  
= 0.8 V (Max)  
8
OLP  
• Pin and Function Compatible with Other Standard Logic Families  
• Latchup Performance Exceeds 300 mA  
• ESD Performance: HBM > 2000 V; Machine Model > 200 V  
• Chip Complexity: FETs = 100; Equivalent Gates = 25  
9
16  
VHC257  
ALYW  
EIAJ SO−16  
M SUFFIX  
CASE 966  
8
1
V
S
1
2
16  
15  
CC  
A0  
OE  
A3  
B3  
A
L, WL  
Y
= Assembly Location  
= Wafer Lot  
= Year  
B0  
Y0  
3
4
14  
13  
W, WW = Work Week  
ORDERING INFORMATION  
A1  
B1  
Y3  
A2  
5
6
12  
11  
†
Device  
Package  
Shipping  
MC74VHC257D  
SO−16  
48 Units/Rail  
B2  
Y2  
7
8
10  
9
Y1  
MC74VHC257DR2  
SO−16  
2500 Tape & Reel  
96 Units/Rail  
GND  
MC74VHC257DT  
TSSOP−16  
MC74VHC257DTR2 TSSOP−16 2500 Tape & Reel  
MC74VHC257M EIAJSO−16 50 Units/Rail  
Figure 1. Pin Assignment  
MC74VHC257MEL EIAJSO−16 2000 Tape & Reel  
†For information on tape and reel specifications,  
including part orientation and tape sizes, please  
refer to our Tape and Reel Packaging Specification  
Brochure, BRD8011/D.  
Semiconductor Components Industries, LLC, 2004  
1
Publication Order Number:  
September, 2004 − Rev. 3  
MC74VHC257/D  
12345678

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