PI74FCT640T データシートの表示（PDF） - Pericom Semiconductor Corporation

部品番号

コンポーネント説明

メーカー

PI74FCT640T

Fast CMOS Octal Bidirectional Transceivers

Pericom Semiconductor Corporation 

PI74FCT245T/640T/645T

25 Ohm Series PI74FCT2245T/2640T/2645T

1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122O334455c66t77a8899l00B1122i33d4455ir6677e88c99t00i11o2233n4455a66l77T8899r00a1122n1122s33c44e55i66v7788e99r0011s22

PI74FCT245T/2245T Switching Characteristics over Operating Range

Parameters Description

Conditions(1)

245T/2245T 245AT/2245AT 245CT/2245CT

Com.

Com.

Com.

Min. Max. Min. Max. Min. Max.

tPLH Propagation Delay

CL = 50 pF

1.5 7.0 1.5 4.6 1.5 4.1

tPHL A to B, B to A

RL = 500 Ohm

tPZH Output Enable Time

1.5 9.0 1.5 6.2 1.5 5.8

tPZL OE to A or B

tPHZ

tPLZ

Output Disable Time

OE to A or B(3)

1.5 7.5 1.5 5.0 1.5 4.8

tPZH Output Enable Time

1.5 9.0 1.5 6.2 1.5 5.8

tPZL

tPHZ

tPLZ

T/R to A or B

Output Disable Time(3)

T/R to A or B(3)

1.5 7.5 1.5 5.0 1.5 4.8

245DT

Com.

Min Max. Unit

1.5 3.8 ns

1.5 5.0 ns

1.5 4.3 ns

1.5 5.0 ns

1.5 4.3 ns

PI74FCT640T/2640T Switching Characteristics over Operating Range

Parameters Description

Conditions(1)

640T/2640T 640AT/2640AT 640CT/2640CT

Com.

Com.

Com.

Min. Max. Min. Max. Min. Max.

tPLH Propagation Delay

CL = 50 pF

2.0 7.0 1.5 5.0 1.5 4.4

tPHL A to B, B to A

RL = 500 Ohm

tPZH Output Enable Time

2.0 13.0 1.5 6.2 1.5 5.8

tPZL OE to A or B

tPHZ

tPLZ

Output Disable Time

OE to A or B(3)

2.0 10.0 1.5 5.0 1.5 4.8

tPZH Output Enable Time

2.0 13.0 1.5 6.2 1.5 5.8

tPZL

tPHZ

tPLZ

T/R to A or B

Output Disable Time(3)

T/R to A or B(3)

2.0 10.0 1.5 5.0 1.5 4.8

640DT

Com.

Min. Max. Unit

1.5 3.7 ns

1.5 5.0 ns

1.5 4.3 ns

1.5 5.0 ns

1.5 4.3 ns

PI74FCT645T/2645T Switching Characteristics over Operating Range

Parameters Description

Conditions(1)

645T/2645T 645AT/2645AT 645CT/2645CT

Com.

Com.

Com.

Min. Max. Min. Max. Min. Max.

645DT

Com.

Min. Max. Unit

tPLH Propagation Delay

CL = 50 pF

1.5 9.5 1.5 4.6 1.5 4.1 1.5 3.8 ns

tPHL A to B, B to A

RL = 500 Ohm

tPZH Output Enable Time

1.5 11.0 1.5 6.2 1.5 5.8 1.5 5.0 ns

tPZL OE to A or B

tPHZ

tPLZ

Output Disable Time

OE to A or B(3)

1.5 12.0 1.5 5.0 1.5 4.8 1.5 4.3 ns

tPZH Output Enable Time

1.5 11.0 1.5 6.2 1.5 5.8 1.5 5.0 ns

tPZL

tPHZ

tPLZ

T/R to A or B

Output Disable Time(3)

T/R to A or B(3)

1.5 12.0 1.5 5.0 1.5 4.8 1.5 4.3 ns

Notes:

1. See test circuit and waveforms.

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

4

PS2012B 09/22/99

Share Link: