74LVC245AD datasheet(9/20 Pages) PHILIPS

9 / 20 page

2003 May 07

Philips Semiconductors

Product speciﬁcation

Octal bus transceiver with direction pin with 5 V tolerant

input/outputs (3-state)

74LVC245A;

74LVCH245A

AC CHARACTERISTICS

GND = 0 V; tr =tf ≤ 2.5 ns.

Notes

1. Typical values are measured at VCC = 3.3 V.

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

VCC (V)

Tamb = −40 to +85 °C

tPHL/tPLH

propagation delay An to Bn, Bn to An

see Figs 5 and 7 1.2

−

2.7

1.5

3.4

7.3

3.0 to 3.6

1.5

2.9(1)

6.3

tPZH/tPZL

3-state output enable time

OE to An, OE to Bn

see Figs 6 and 7 1.2

−

2.7

1.5

5.0

9.5

3.0 to 3.6

1.5

4.0(1)

8.5

tPHZ/tPLZ

3-state output disable time

OE to An, OE to Bn

see Figs 6 and 7 1.2

−

2.7

1.5

3.6

8.0

3.0 to 3.6

1.7

3.4(1)

7.0

tsk(0)

skew

note 2

−−

1.0

Tamb = −40 to +125 °C

tPHL/tPLH

propagation delay An to Bn, Bn to An

see Figs 5 and 7 1.2

−−−

2.7

1.5

−

9.5

3.0 to 3.6

1.5

−

8.0

tPZH/tPZL

3-state output enable time

OE to An, OE to Bn

see Figs 6 and 7 1.2

−−−

2.7

1.5

−

12.0

3.0 to 3.6

1.5

−

11.0

tPHZ/tPLZ

3-state output disable time

OE to An, OE to Bn

see Figs 6 and 7 1.2

−−−

2.7

1.5

−

10.0

3.0 to 3.6

1.7

−

9.0

tsk(0)

skew

note 2

−−

1.5

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