CY54/74FCT646T

5

Parameter

Description

FCT646T

FCT646AT

Unit

Fig.

Military

Commercial

Commercial

Min.

Max.

Min.

Max.

Min.

Max.

Propagation Delay Bus to Bus

2.0

11.0

1.5

9.0

1.5

6.3

ns

1, 3

Output Enable Time

2.0

15.0

1.5

14.0

1.5

9.8

ns

1, 7, 8

Output Disable Time

G to Bus and DIR to Bus

2.0

11.0

1.5

9.0

1.5

6.3

ns

1, 7, 8

Propagation Delay

Clock to Bus

2.0

10.0

1.5

9.0

1.5

6.3

ns

1, 5

Propagation Delay

SBA or SAB to A or B

2.0

12.0

1.5

11.0

1.5

7.7

ns

1, 5

Set-Up Time HIGH or LOW,

Bus to Clock

4.5

4.0

2.0

ns

4

Hold Time HIGH or LOW,

Bus to Clock

2.0

2.0

1.5

ns

4

6.0

6.0

5.0

ns

5

Parameter

Description

FCT646CT

Unit

Fig.

Military

Commercial

Min.

Max.

Min.

Max.

Propagation Delay Bus to Bus

1.5

6.0

1.5

5.4

ns

1, 3

1.5

8.9

1.5

7.8

ns

1, 7, 8

Output Disable Time G to Bus and DIR toBus

1.5

7.7

1.5

6.3

ns

1, 7, 8

Propagation Delay Clock to Bus

1.5

6.3

1.5

5.7

ns

1, 5

Propagation Delay SBA or SAB to A or B

1.5

7.0

1.5

6.2

ns

1, 5

Set-Up Time, HIGH or LOW, Bus to Clock

2.0

2.0

ns

4

Hold Time, HIGH or LOW, Bus to Clock

1.5

1.5

ns

4

5.0

5.0

ns

5

Notes:

14. Minimum limits are specified but not tested on Propagation Delays.

15. See “Parameter Measurement Information” in the General Information Section.