IDT74FCT652ATSOB datasheet(7/9 Pages) IDT

7 / 9 page

IDT54/74FCT646/2646/652/2652T/AT/CT/DT, 648T/AT/CT

FAST CMOS OCTAL TRANSCEIVER/REGISTER

MILITARY AND COMMERCIAL TEMPERATURE RANGES

6.20

SWITCHING CHARACTERISTICS OVER OPERATING RANGE

2634 tbl 09

NOTES:

2634 tbl 10

1. See test circuit and waveforms.

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

3. GAB,

GBA to Bus for 652.

4. This parameter is guaranteed but not tested.

646/648/652T

2646/2652T

646/648/652AT

2646/2652AT

Com'l.

Mil.

Com'l.

Mil.

Symbol

Parameter

Condition(1)

Min.(2)

Max.

Min.(2)

Max.

Min.(2)

Max.

Min.(2)

Max.

Unit

tPLH

tPHL

Propagation Delay

Bus to Bus

CL = 50pF

RL = 500

Ω

2.0

9.0

2.0

11.0

2.0

6.3

2.0

7.7

tPZH

tPZL

Output Enable Time,

DIR to Bus(3)

2.0

14.0

2.0

15.0

2.0

9.8

2.0

10.5

tPHZ

tPLZ

Output Disable Time,

DIR to Bus(3)

2.0

9.0

2.0

11.0

2.0

6.3

2.0

7.7

tPLH

tPHL

Propagation Delay

Clock to Bus

2.0

9.0

2.0

10.0

2.0

6.3

2.0

7.0

tPLH

tPHL

Propagation Delay SBA or

SAB to Bus

2.0

11.0

2.0

12.0

2.0

7.7

2.0

8.4

tSU

Set-up Time HIGH or LOW

Bus to Clock

4.0

—

4.5

—

2.0

—

2.0

—

Hold Time HIGH or LOW

Bus to Clock

2.0

—

2.0

—

1.5

—

1.5

—

Clock Pulse Width,

HIGH or LOW

6.0

—

6.0

—

5.0

—

5.0

—

646/648/652CT

2646/2652CT

646/652DT

Com'l.

Mil.

Com'l.

Mil.

Symbol

Parameter

Condition(1)

Min.(2)

Max.

Min.(2)

Max.

Min.(2)

Max.

Min.(2)

Max.

Unit

tPLH

tPHL

Propagation Delay

Bus to Bus

CL = 50pF

RL = 500

Ω

1.5

5.4

1.5

6.0

1.5

4.4

—

tPZH

tPZL

Output Enable Time,

DIR to Bus(3)

1.5

7.8

1.5

8.9

1.5

5.0

—

tPHZ

tPLZ

Output Disable Time,

DIR to Bus(3)

1.5

6.3

1.5

7.7

1.5

4.3

—

tPLH

tPHL

Propagation Delay

Clock to Bus

1.5

5.7

1.5

6.3

1.5

4.4

—

tPLH

tPHL

Propagation Delay SBA or

SAB to Bus

1.5

6.2

1.5

7.0

1.5

5.0

—

tSU

Set-up Time HIGH or LOW

Bus to Clock

2.0

—

2.0

—

1.5

—

Hold Time HIGH or LOW

Bus to Clock

1.5

—

1.5

—

1.0

—

Clock Pulse Width,

HIGH or LOW(4)

5.0

—

5.0

—

3.0

—

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