Datasheet > 74AHC157BQ-Q100

74AHC157BQ-Q100

更新时间： 2024-11-29 01:00:11

品牌	Logo	应用领域
安世 - NEXPERIA		/
页数	文件大小	规格书
17页	719K
描述
Automotive product qualification in accordance with AEC-Q100

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74AHC157BQ-Q100 数据手册

74AHC157-Q100;

74AHCT157-Q100

Quad 2-input multiplexer

Rev. 1 — 4 July 2013

Product data sheet

1. General description

The 74AHC157-Q100; 74AHCT157-Q100 is a high-speed Si-gate CMOS device and is

pin compatible with Low-Power Schottky TTL (LSTTL). It is specified in compliance with

JEDEC standard no. 7A.

The 74AHC157-Q100; 74AHCT157-Q100 is a quad 2-input multiplexer which selects 4

bits of data from two sources under the control of a common data select input (S). The

enable input (E) is active LOW. When E is HIGH, all of the outputs (1Y to 4Y) are forced

LOW regardless of all other input conditions. Moving the data from two groups of registers

to four common output buses is a common use of the 74AHC157-Q100;

74AHCT157-Q100. The state of the common data select input (S) determines the

particular register from which the data comes. It can also be used as function generator.

The device is useful for implementing highly irregular logic by generating any four of the

16 different functions of two variables with one variable common. The 74AHC157-Q100;

74AHCT157-Q100 is logic implementation of a 4-pole, 2-position switch. The logic levels

applied to S, determines the position of the switch.

The logic equations are:

1Y = E (1I1 S + 1I0 S)

2Y = E (2I1 S + 2I0 S)

3Y = E (3I1 S + 3I0 S)

4Y = E (4I1 S + 4I0 S)

This product has been qualified to the Automotive Electronics Council (AEC) standard

Q100 (Grade 1) and is suitable for use in automotive applications.

2. Features and benefits

 Automotive product qualification in accordance with AEC-Q100 (Grade 1)

 Specified from 40 C to +85 C and from 40 C to +125 C

 Balanced propagation delays

 All inputs have a Schmitt-trigger action

 Inputs accept voltages higher than V_CC

 Multiple input enable for easy expansion

 Ideal for memory chip select decoding

 Input levels:

 For 74AHC157-Q100: CMOS level

 For 74AHCT157-Q100: TTL level

12 3 4 5 6 7...17

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