IDT54FCT2245DTP datasheet(5/8 Pages) IDT

Part #	IDT54FCT2245DTP

Description	FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS

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Manufacturer	IDT [Integrated Device Technology]

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IDT54/74FCT245T/AT/CT/DT - 2245T/AT/CT, IDT54/74FCT640T/AT/CT, IDT54/74FCT645T/AT/CT/DT

FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS

MILITARY AND COMMERCIAL TEMPERATURE RANGES

6.9

5

SWITCHING CHARACTERISTICS OVER OPERATING RANGE

2534 tbl 09

SWITCHING CHARACTERISTICS OVER OPERATING RANGE

2534 tbl 10

FCT245T

FCT2245T

FCT245AT

FCT2245AT

Com'l.

Mil.

Com'l.

Mil.

Symbol

Parameter

Conditions(1)

Min.(2)

Max.

Min.(2)

Max.

Min.(2)

Max.

Min.(2)

Max.

Unit

tPLH

tPHL

Propagation Delay

A to B, B to A

CL = 50 pF

RL = 500

Ω

1.5

7.0

1.5

7.5

1.5

4.6

1.5

4.9

ns

tPZH

tPZL

Output Enable Time

OE to A or B

1.5

9.5

1.5

10.0

1.5

6.2

1.5

6.5

ns

tPHZ

tPLZ

Output Disable Time

OE to A or B

1.5

7.5

1.5

10.0

1.5

5.0

1.5

6.0

ns

tPZH

tPZL

Output Enable Time

T/

R to A or B(3)

1.5

9.5

1.5

10.0

1.5

6.2

1.5

6.5

ns

tPHZ

tPLZ

Output Disable Time

T/

R to A or B(3)

1.5

7.5

1.5

10.0

1.5

5.0

1.5

6.0

ns

FCT245CT

FCT2245CT

FCT245DT

Com'l.

Mil.

Com'l.

Mil.

Symbol

Parameter

Conditions(1)

Min.(2)

Max.

Min.(2)

Max.

Min.(2)

Max.

Min.(2)

Max.

Unit

tPLH

tPHL

Propagation Delay

A to B, B to A

CL = 50 pF

RL = 500

Ω

1.5

4.1

1.5

4.5

1.5

3.8

—

ns

tPZH

tPZL

Output Enable Time

OE to A or B

1.5

5.8

1.5

6.2

1.5

5.0

—

ns

tPHZ

tPLZ

Output Disable Time

OE to A or B

1.5

4.8

1.5

5.2

1.5

4.3

—

ns

tPZH

tPZL

Output Enable Time

T/

R to A or B(3)

1.5

5.8

1.5

6.2

1.5

5.0

—

ns

tPHZ

tPLZ

Output Disable Time

T/

R to A or B(3)

1.5

4.8

1.5

5.2

1.5

4.3

—

ns

FCT640T

FCT640AT

FCT640CT

Com'l.

Mil.

Com'l.

Mil.

Com'l.

Mil.

Symbol

Parameter

Conditions(1) Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max.

Unit

tPLH

tPHL

Propagation Delay

A to B, B to A

CL = 50 pF

RL = 500

Ω

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

tPZH

tPZL

Output Enable Time

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

tPLZ

Output Disable Time

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

tPZL

Output Enable Time

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

tPLZ

Output Disable Time

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

NOTES:

2534 tbl 11

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.

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