KK74AC257

更新时间： 2024-02-29 08:59:57

品牌	Logo	应用领域
可天士 - KODENSHI		复用器栅
页数	文件大小	规格书
6页	343K
描述
Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Speed Silicon-Gate CMOS

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技术参数
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KK74AC257 技术参数

生命周期：	Obsolete	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.84
Base Number Matches：	1

KK74AC257 数据手册

TECHNICAL DATA

KK74AC257

Quad 2-Input Data Selector/Multiplexer

with 3-State Outputs

High-Speed Silicon-Gate CMOS

The KK74AC257 is identical in pinout to the LS/ALS257,

HC/HCT257. The device inputs are compatible with standard CMOS

outputs; with pullup resistors, they are compatible with LS/ALS outputs.

This device selects a (4-bit) nibble from either the A or B inputs as

determined by the Select input. The nibble is presented at the outputs in

noninverted from when the Output Enable pin is at a low level. A high

level on the Output Enable pin switches the outputs into the high-

impedance state.

ORDERING INFORMATION

KK74AC257N Plastic

KK74AC257D SOIC

T_A= -40° to 85° C for all packages

•

Outputs Directly Interface to CMOS, NMOS, and TTL

Operating Voltage Range: 2.0 to 6.0 V

Low Input Current: 1.0 µA; 0.1 µA @ 25°C

High Noise Immunity Characteristic of CMOS Devices

Output Source/Sink 24 mA

PIN ASSIGNMENT

LOGIC DIAGRAM

FUNCTION TABLE

Inputs

Output

Outputs

Y0-Y3

Select

Enable

A0-A3

B0-B3

X=don’t care

Z = high-impedance state

A0-A3,B0-B3=the levels of the respective

Nibble Inputs

PIN 16 =V_CC

PIN 8 = GND

12 3 4 5 6

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与KK74AC257相关器件

型号	品牌	获取价格	描述	数据表
KK74AC257D	KODENSHI	获取价格	Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Speed Silicon-Gate CMOS
KK74AC257N	KODENSHI	获取价格	Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Speed Silicon-Gate CMOS
KK74AC258	KODENSHI	获取价格	Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Speed Silicon-Gate CMOS
KK74AC258D	KODENSHI	获取价格	Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Speed Silicon-Gate CMOS
KK74AC258N	KODENSHI	获取价格	Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Speed Silicon-Gate CMOS
KK74AC27	KODENSHI	获取价格	Triple 3-Input NOR Gate High-Speed Silicon-Gate CMOS
KK74AC273	KODENSHI	获取价格	Octal D Flip-Flop with Common Clock and Reset
KK74AC273DW	KODENSHI	获取价格	Octal D Flip-Flop with Common Clock and Reset
KK74AC273N	KODENSHI	获取价格	Octal D Flip-Flop with Common Clock and Reset
KK74AC27D	KODENSHI	获取价格	Triple 3-Input NOR Gate High-Speed Silicon-Gate CMOS