PI74FCT257AT datasheet(5/5 Pages) PERICOM

Part #	PI74FCT257AT

Description	Fast CMOS Quad 2-Input Multiplexer

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Manufacturer	PERICOM [Pericom Semiconductor Corporation]

Direct Link	http://www.pericom.com

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5

PS2010A 03/09/96

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PI74FCT157T/257T

(25

Ω

Ω Series)PI74FCT2157T/2257T

QUAD 2-INPUT MULTIPLEXER

PI74FCT257/2257T Switching Characteristics over Operating Range

257T/2257T

257AT/2257AT 257CT/2257CT

Com.

Parameters

Description

Conditions(1)

Min

Max

Min

Max

Min

Max

Unit

tPLH

Propagation Delay

CL = 50 pF

1.5

6.0

1.5

5.0

1.5

4.3

ns

tPHL

IN to ZN

RL = 500

Ω

tPLH

Propagation Delay

1.5

10.5

1.5

7.0

1.5

5.2

ns

tPHL

S to ZN

tPZH

Output Enable Time

1.5

8.5

1.5

7.0

1.5

6.0

ns

tPZL

OE to ZN

tPZH

Output Disable Time(3)

1.5

6.0

1.5

5.5

1.5

5.0

ns

tPZL

OE to ZN

PI74FCT157/2157T Switching Characteristics over Operating Range

157T/2157T

157AT/2157AT 157CT/2157CT

157DT

Com.

Parameters

Description

Conditions(1)

Min

Max

Min

Max

Min

Max

Min

Max

Unit

tPLH

Propagation Delay

CL = 50 pF

1.5

6.0

1.5

5.0

1.5

4.3

1.5

3.9

ns

tPHL

IN to ZN

RL = 500

Ω

tPLH

Propagation Delay

1.5

10.5

1.5

6.0

1.5

4.8

1.5

4.4

ns

tPHL

E to ZN

tPLH

Propagation Delay

1.5

10.5

1.5

7.0

1.5

5.2

1.5

4.6

ns

tPHL

S to ZN

Notes:

1. See test circuit and wave forms.

2. Minimum limits are guaranteed but not tested on Propagation Delays.

3. This parameter guaranteed but not production tested.

Pericom Semiconductor Corporation

2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com

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