Datasheet > PI74FCT257TW

PI74FCT257TW

更新时间： 2024-02-17 18:10:18

品牌	Logo	应用领域
其他 - ETC		复用器
页数	文件大小	规格书
5页	184K
描述
2-Input Digital Multiplexer

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数据手册

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PI74FCT257TW 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 Semiconductors PI74FCT series of logic circuits are pro-

duced in the Companys 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

0B-I

257

ONLY

PS2010A 03/09/96

12 3 4 5

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