PI74FCT648T datasheet(7/7 Pages) PERICOM

Part #	PI74FCT648T

Description	Fast CMOS Octal Registered Transceivers

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Manufacturer	PERICOM [Pericom Semiconductor Corporation]

Direct Link	http://www.pericom.com

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PS2022A 03/11/96

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PI74FCT646/648/651/652T

(25

Ω

Ω Series) P174FCT2646T/2652T

OCTAL REGISTERED TRANSCEIVERS

PI74FCT652/2652T Switching Characteristics over Operating Range

652T/2652T

652AT/2652AT

652CT

652DT

Com.

Parameters

Description

Conditions(1)

Min

Max

Min

Max

Min

Max

Min

Max

Unit

tPLH

Propagation Delay

CL = 50 pF

2.0

9.0

2.0

6.3

1.5

5.4

1.5

4.8

ns

tPHL

Bus to Bus

RL = 500

Ω

tPZH

Output Enable Time

2.0

12.5

2.0

9.8

1.5

7.8

1.5

7.3

ns

tPZL

GBA, GAB to Bus

tPHZ

Output Disable Time(3)

2.0

9.0

2.0

6.3

1.5

6.3

1.5

6.0

ns

tPLZ

GBA, GAB to Bus

tPLH

Propagation Delay

2.0

9.0

2.0

6.3

1.5

5.7

1.5

5.2

ns

tPHL

Clock to Bus

tPLH

Propagation Delay

2.0

9.5

2.0

7.7

1.5

6.2

1.5

5.8

ns

tPHL

SBA or SAB to Bus

tSU

Setup Time HIGH or

4.0

—

2.0

—

2.0

—

2.0

—

ns

LOW, BUS to Clock

tH

Hold Time HIGH or

2.0

—

1.5

—

1.5

—

1.5

—

ns

LOW, Bus to Clock

tW

Clock Pulse Width(3)

6.0

—

5.0

—

5.0

—

5.0

—

ns

HIGH or LOW

PI74FCT651T Switching Characteristics over Operating Range

651T

651AT

651CT

651DT

Com.

Parameters

Description

Conditions(1)

Min

Max

Min

Max

Min

Max

Min

Max

Unit

tPLH

Propagation Delay

CL = 50 pF

2.0

9.0

2.0

6.3

1.5

5.4

1.5

4.8

ns

tPHL

Bus to Bus

RL = 500

Ω

tPZH

Output Enable Time

2.0

12.5

2.0

9.8

1.5

7.8

1.5

7.3

ns

tPZL

GBA, GAB to Bus

tPHZ

Output Disable Time(3)

2.0

9.0

2.0

6.3

1.5

6.3

1.5

6.0

ns

tPLZ

GBA, GAB to Bus

tPLH

Propagation Delay

2.0

9.0

2.0

6.3

1.5

5.7

1.5

5.2

ns

tPHL

Clock to Bus

tPLH

Propagation Delay

2.0

9.5

2.0

7.7

1.5

6.2

1.5

5.8

ns

tPHL

SBA or SAB to Bus

tSU

Setup Time HIGH or

4.0

—

2.0

—

2.0

—

2.0

—

ns

LOW, BUS to Clock

tH

Hold Time HIGH or

2.0

—

1.5

—

1.5

—

1.5

—

ns

LOW, Bus to Clock

tW

Clock Pulse Width(3)

6.0

—

5.0

—

5.0

—

5.0

—

ns

HIGH or LOW

Notes:

1. See test circuit and wave forms.

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

3. This parameter is 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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