FSTU3257

更新时间： 2024-09-24 22:19:03

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		解复用器开关
页数	文件大小	规格书
7页	92K
描述
Quad 2:1 Multiplexer/Demultiplexer Bus Switch with -2V Undershoot Protection

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数据手册

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FSTU3257 数据手册

August 1999

Revised April 2000

FSTU3257

Quad 2:1 Multiplexer/Demultiplexer Bus Switch

with −2V Undershoot Protection

General Description

Features

■ Undershoot hardened to −2V (A and B Ports)

The Fairchild Switch FSTU3257 is a quad 2:1 high-speed

CMOS TTL-compatible multiplexer/demultiplexer bus

switch. The low on resistance of the switch allows inputs to

be connected to outputs without adding propagation delay

or generating additional ground bounce noise.

■ Soft enable turn-on to minimize bus to bus charge

sharing during enable

■ 4Ω switch connection between two ports.

■ Minimal propagation delay through the switch.

When OE is LOW, the select pin connects the A Port to the

selected B Port output. The A and B Ports are “undershoot

hardened” with UHC protection to support an extended

range of 2.0V below ground. Fairchild’s integrated Under-

shoot Hardened Circuit UHC senses undershoot at the I/O

and responds by preventing voltage differentials from

developing and turning on the switch. When OE is HIGH,

the switch is OPEN and a high-impedance state exists

between the two ports.

■ Low l_CC

■ Zero bounce in flow-through mode.

■ Control inputs compatible with TTL level.

■ See Applications Note AN-5008 for details

Ordering Code:

Order Number

FSTU3257M

Package Number

M16A

Package Description

16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow

16-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150 Wide

16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

FSTU3257QSC

FSTU3257MTC

MQA16

MTC16

Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.

UHC is a trademark of Fairchild Semiconductor Corporation.

DS500302

www.fairchildsemi.com

12 3 4 5 6 7

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