SN54LS157

更新时间： 2024-09-15 23:06:11

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		复用器输入元件
页数	文件大小	规格书
5页	162K
描述
QUAD 2-INPUT MULTIPLEXER

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中文翻译

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数据手册

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SN54LS157 数据手册

SN54/74LS157

QUAD 2-INPUT MULTIPLEXER

The LSTTL/MSI SN54/74LS157 is a high speed Quad 2-Input Multiplexer.

Four bits of data from two sources can be selected using the common Select

and Enable inputs. The four buffered outputs present the selected data in the

true (non-inverted) form. The LS157 can also be used to generate any four

of the 16 different functions of two variables. The LS157 is fabricated with the

Schottky barrier diode process for high speed and is completely compatible

with all Motorola TTL families.

QUAD 2-INPUT MULTIPLEXER

LOW POWER SCHOTTKY

• Schottky Process for High Speed

• Multifunction Capability

• Non-Inverting Outputs

• Input Clamp Diodes Limit High Speed Termination Effects

• Special Circuitry Ensures Glitch Free Multiplexing

• ESD > 3500 Volts

J SUFFIX

CERAMIC

CONNECTION DIAGRAM DIP (TOP VIEW)

CASE 620-09

NOTE:

The Flatpak version has

the same pinouts

(Connection Diagram) as

the Dual In-Line Package.

N SUFFIX

PLASTIC

CASE 648-08

PIN NAMES

LOADING (Note a)

HIGH LOW

0.5 U.L.

D SUFFIX

SOIC

CASE 751B-03

Common Select Input

1.0 U.L.

0.5 U.L.

10 U.L.

Enable (Active LOW) Input

Data Inputs from Source 0

Data Inputs from Source 1

Multiplexer Outputs (Note b)

0.5 U.L.

0.25 U.L.

–I

0a 0d

1a 1d

Z –Z

5 (2.5) U.L.

ORDERING INFORMATION

NOTES:

SN54LSXXXJ Ceramic

SN74LSXXXN Plastic

SN74LSXXXD SOIC

a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW.

b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74)

Temperature Ranges.

LOGIC DIAGRAM

LOGIC SYMBOL

FAST AND LS TTL DATA

5-268

12 3 4 5

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