Datasheet > FSTU6800_06

FSTU6800_06

更新时间： 2024-09-25 04:18:59

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		开关
页数	文件大小	规格书
5页	191K
描述
10-Bit Bus Switch with Precharged Outputs and −2V Undershoot Protection

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FSTU6800_06 数据手册

December 1998

Revised October 2006

FSTU6800

10-Bit Bus Switch with Precharged Outputs

and −2V Undershoot Protection

General Description

Features

■ 4Ω switch connection between two ports.

The Fairchild Switch FSTU6800 provides 10-bits of high-

speed CMOS TTL-compatible bus switching. The low on

resistance of the switch allows inputs to be connected to

outputs without adding propagation delay or generating

additional ground bounce noise. Both the A Ports and the B

Ports have “undershoot hardened” circuit protection to sup-

port an extended input range to 2.0V below ground. Fair-

child’s integrated Undershoot Hardened Circuit (UHC®)

senses undershoot at the I/Os, and responds by preventing

voltage differentials from developing and turning on the

switch. The device also precharges the B Port to a select-

able bias voltage (BiasV) to minimize live insertion noise.

■ Undershoot Hardened to -2.0V.

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

sharing during enable.

■ Low l_CC

■ Zero bounce in flow-through mode.

■ Output precharge to minimize live insertion noise.

■ Control inputs compatible with TTL level.

■ See Applications Note AN-5008 for details.

The device is organized as a 10-bit switch with a bus

enable (OE) signal. When OE is LOW, the switch is ON

and Port A is connected to Port B. When OE is HIGH, the

switch is OPEN and the B Port is precharged to BiasV

through an equivalent 10-kΩ resistor.

Ordering Code:

Order Number

FSTU6800WM

FSTU6800QSC

FSTU6800MTC

Package Number

M24B

Package Description

24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide

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

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

MQA24

MTC24

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

Logic Diagram

Connection Diagram

Pin Descriptions

Pin Name

Description

Truth Table

Bus Switch Enable

Bus A

B₀–B₉

Function

Connect

Bus B

A₀–A₉

BiasV

Bus B Voltage Bias

BiasV

Precharge

UHC® is a registered trademark of Fairchild Semiconductor Corporation.

DS500194

www.fairchildsemi.com

12 3 4 5

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