IDT54FCT245 データシートの表示（PDF） - Integrated Device Technology

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IDT54FCT245

FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS

Integrated Device Technology 

IDT54/74FCT245/A/C, IDT54/74FCT640/A/C, IDT54/74FCT645/A/C

FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS

MILITARY AND COMMERCIAL TEMPERATURE RANGES

SWITCHING CHARACTERISTICS OVER OPERATING RANGE FOR FCT245/A/C

54/74FCT245

54/74FCT245A

54/74FCT245C

Symbol

tPLH

tPHL

Parameter

Propagation Delay

A to B, B to A

Com’l.

Mil.

Com’l.

Mil.

Com’l.

Mil.

Condition(1) Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Unit

CL = 50 pF 1.5 7.0 1.5 7.5 1.5 4.6 1.5 4.9 1.5 4.1 1.5 4.5 ns

RL = 500Ω

tPZH Output Enable Time

tPZL

OE to A or B

1.5 9.5 1.5 10.0 1.5 6.2 1.5 6.5 1.5 5.8 1.5 6.2 ns

tPHZ Output Disable Time

tPLZ

OE to A or B

1.5 7.5 1.5 10.0 1.5 5.0 1.5 6.0 1.5 4.8 1.5 5.2 ns

tPZH Output EnableTime

tPZL

T/R to A or B(3)

1.5 9.5 1.5 10.0 1.5 6.2 1.5 6.5 1.5 5.8 1.5 6.2 ns

tPHZ Output Disable Time

tPLZ

T/R to A or B(3)

1.5 7.5 1.5 10.0 1.5 5.0 1.5 6.0 1.5 4.8 1.5 5.2 ns

2534 tbl 07

SWITCHING CHARACTERISTICS OVER OPERATING RANGE FOR FCT640/A/C

54/74FCT640

54/74FCT640A

54/74FCT640C

Symbol

Parameter

Com’l.

Mil.

Com’l.

Mil.

Com’l.

Mil.

Condition(1) Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Unit

tPLH Propagation Delay CL = 50 pF 2.0 7.0 2.0 8.0 1.5 5.0 1.5 5.3 1.5 4.4 1.5 4.7 ns

tPHL A to B, B to A

RL = 500Ω

tPZH Output Enable Time

tPZL

OE to A or B

2.0 13.0 2.0 16.0 1.5 6.2 1.5 6.5 1.5 5.8 1.5 6.2 ns

tPHZ Output Disable Time

tPLZ

OE to A or B

2.0 10.0 2.0 12.0 1.5 5.0 1.5 6.0 1.5 4.8 1.5 5.2 ns

tPZH Output Enable Time

tPZL

T/R to A or B(3)

2.0 13.0 2.0 16.0 1.5 6.2 1.5 6.5 1.5 5.8 1.5 6.2 ns

tPHZ Output Disable Time

tPLZ

T/R to A or B(3)

2.0 10.0 2.0 12.0 1.5 5.0 1.5 6.0 1.5 4.8 1.5 5.2 ns

2534 tbl 08

SWITCHING CHARACTERISTICS OVER OPERATING RANGE FOR FCT645/A/C

54/74FCT645

54/74FCT645A

54/74FCT645C

Symbol

Parameter

Com’l.

Mil.

Com’l.

Mil.

Com’l.

Mil.

Condition(1) Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Unit

tPLH Propagation Delay CL = 50 pF 1.5 9.5 1.5 11.0 1.5 4.6 1.5 4.9 1.5 4.1 1.5 4.5 ns

tPHL A to B, B to A

RL = 500Ω

tPZH Output Enable Time

tPZL

OE to A or B

1.5 11.0 1.5 12.0 1.5 6.2 1.5 6.5 1.5 5.8 1.5 6.2 ns

tPHZ Output Disable Time

tPLZ

OE to A or B

1.5 12.0 1.5 13.0 1.5 5.0 1.5 6.0 1.5 4.8 1.5 5.2 ns

tPZH Output Enable Time

tPZL

T/R to A or B(3)

1.5 11.0 1.5 12.0 1.5 6.2 1.5 6.5 1.5 5.8 1.5 6.2 ns

tPHZ Output Disable Time

tPLZ

T/R to A or B(3)

1.5 12.0 1.5 13.0 1.5 5.0 1.5 6.0 1.5 4.8 1.5 5.2 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 tested.

2534 tbl 09

7.9

5

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