5

PS2011B

12/11/00

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PI74FCT240T/241T/244T/540T/541T(25ohmSeries)

PI74FCT2240T/2241T/2244T/2541T

OctalBuffer/LineDrivers

PI74FCT240/2240T Switching Characteristics over Operating Range

240T/2240T

240AT/2240AT 240CT/2240CT

240DT

Com.

Com.

Com.

Com.

Parameters Description

Min

Max

Min

Max

Min

Max

Min

Max Units

Propagation Delay

1.5

8.0

1.5

4.8

1.5

4.3

1.5

3.6

ns

Ω

Output Enable Time

1.5

10.0

1.5

6.2

1.5

5.8

1.5

4.8

ns

Output Disable Time(3)

1.5

9.5

1.5

5.6

1.5

5.2

1.5

4.0

ns

PI74FCT241/2241T Switching Characteristics over Operating Range

241T/2241T

241AT/2241AT 241CT/2241CT

241DT

Com.

Com.

Com.

Com.

Parameters Description

Min

Max

Min

Max

Min

Max

Min

Max Units

Propagation Delay

1.5

6.5

1.5

4.8

1.5

4.1

1.5

3.6

ns

Ω

Output Enable Time

1.5

8.0

1.5

6.2

1.5

5.8

1.5

4.8

ns

1.5

7.0

1.5

5.6

1.5

5.2

1.5

4.0

ns

PI74FCT244/2244T Switching Characteristics over Operating Range

244T/2244T

244AT/2244AT 244CT/2244CT

244DT

Com.

Com.

Com.

Com.

Parameters Description

Min

Max

Min

Max

Min

Max

Min

Max

Units

Propagation Delay

1.5

6.5

1.5

4.8

1.5

4.1

1.5

3.6

ns

Ω

Output Enable Time

1.5

8.0

1.5

6.2

1.5

5.8

1.5

4.8

ns

1.5

7.0

1.5

5.6

1.5

5.2

1.5

4.0

ns

Notes:

1. See test circuit and wave forms.

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

3. This parameter is guaranteed but not production tested.