2003 Oct 30

9

Philips Semiconductors

Product specification

Octal buffer/line driver with 5 V tolerant

inputs/outputs (3-state)

74LVC244A; 74LVCH244A

AC CHARACTERISTICS

Notes

2. Skew between any two outputs of the same package switching in the same direction. This parameter is guaranteed

by design.

SYMBOL

PARAMETER

TEST CONDITIONS

MIN.

TYP.

MAX.

UNIT

WAVEFORMS

propagation delay 1An to 1Yn, 2An to 2Yn see Figs 6 and 8

1.2

−

17.0

−

ns

2.7

1.5

3.3

6.9

ns

3.0 to 3.6

1.5

5.9

ns

3-state output enable time 1OE to 1Yn,

2OE to 2Yn

see Figs 7 and 8

1.2

−

24.0

−

ns

2.7

1.5

3.3

8.6

ns

3.0 to 3.6

1.0

7.6

ns

3-state output disable time 1OE to 1Yn,

2OE to 2Yn

see Figs 7 and 8

1.2

−

9.0

−

ns

2.7

1.5

3.2

6.8

ns

3.0 to 3.6

1.5

5.8

ns

skew

note 2

−−

1.0

ns

propagation delay 1An to 1Yn, 2An to 2Yn see Figs 6 and 8

1.2

−−−

ns

2.7

1.5

−

9.0

ns

3.0 to 3.6

1.5

−

7.5

ns

3-state output enable time 1OE to 1Yn,

2OE to 2Yn

see Figs 7 and 8

1.2

−−−

ns

2.7

1.5

−

11

ns

3.0 to 3.6

1.0

−

9.5

ns

3-state output disable time 1OE to 1Yn,

2OE to 2Yn

see Figs 7 and 8

1.2

−−−

ns

2.7

1.5

−

8.5

ns

3.0 to 3.6

1.5

−

7.5

ns

skew

note 2

−−

1.5

ns