PI74FCT157T

更新时间： 2024-11-24 22:44:27

品牌	Logo	应用领域
百利通 - PERICOM		复用器
页数	文件大小	规格书
5页	53K
描述
Fast CMOS Quad 2-Input Multiplexer

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PI74FCT157T 数据手册

PI74FCT157T/257T

(25Ω Series)PI74FCT2157T/2257T

QUAD 2-INPUT MULTIPLEXER

PI74FCT157T/257T

(25Ω Series)PI74FCT2157T/2257T

Fast CMOS

Quad 2-Input Multiplexer

ProductFeatures:

Product Description:

• PI74FCT157/257/2157/2257Tispincompatiblewithbipolar

FAST™ Series at a higher speed and lower power

consumption

• 25Ω series resistor on all outputs (FCT2XXX only)

• TTL input and output levels

• Low ground bounce outputs (25Ω series only)

• Extremelylowstaticpower

• Hysteresis on all inputs

Pericom Semiconductor’s PI74FCT series of logic circuits are pro-

duced in the Company’s advanced 0.8 micron CMOS technology,

achievingindustryleadingspeedgrades.AllPI74FCT2XXXdevices

have a built-in 25-ohm series resistor on all outputs to reduce noise

because of reflections, thus eliminating the need for an external

terminating resistor.

The PI74FCT157T/257T and PI74FCT2157T/2257T are high-

speed quad 2-input multiplexers. The common select input can be

used to select four bits of data from two sources. The four buffered

outputs present the selected data in the true (non-inverting) form.

• Industrial operating temperature range: –40°C to +85°C

• Packagesavailable:

– 16-pin150milwideplasticQSOP(Q)

– 16-pin300milwideplasticSOIC(S)

– 16-pin150milwideplasticSOIC(W)

The PI74FCT157T/2157T has a common, active-LOW, Enable

input (E). When E is inactive, all four outputs are held LOW. The

PI74FCT157T/2157T can generate any four of the 16 different

funtions of two variables with one common variable. The

PI74FCT157T/2157T can be used as a function generator or to

move data from two different groups of registers to a common bus.

The PI74FCT257/2257T has a common Output Enable (OE) input.

When OE is HIGH, all outputs are switched to a high-impedance

state allowing the outputs to interface directly with bus-oriented

systems.

Logic Block Diagram

157

ONLY

3 OTHER MULTIPLEXERS

B-I

B-ZD

257

ONLY

PS2010A 03/09/96

12 3 4 5

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