74LVC245AD データシートの表示（PDF） - Philips Electronics

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74LVC245AD

Octal bus transceiver with direction pin with 5 V tolerant input/outputs (3-state)

Philips Electronics 

Philips Semiconductors

Octal bus transceiver with direction pin with 5 V tolerant

input/outputs (3-state)

Product specification

74LVC245A;

74LVCH245A

AC CHARACTERISTICS

GND = 0 V; tr = tf ≤ 2.5 ns.

SYMBOL

PARAMETER

Tamb = −40 to +85 °C

tPHL/tPLH propagation delay An to Bn, Bn to An

tPZH/tPZL 3-state output enable time

OE to An, OE to Bn

tPHZ/tPLZ 3-state output disable time

OE to An, OE to Bn

tsk(0)

skew

Tamb = −40 to +125 °C

tPHL/tPLH propagation delay An to Bn, Bn to An

tPZH/tPZL 3-state output enable time

OE to An, OE to Bn

tPHZ/tPLZ 3-state output disable time

OE to An, OE to Bn

tsk(0)

skew

TEST CONDITIONS

WAVEFORMS VCC (V)

MIN. TYP. MAX. UNIT

see Figs 5 and 7 1.2

−

17

−

ns

2.7

1.5 3.4 7.3 ns

3.0 to 3.6 1.5 2.9(1) 6.3 ns

see Figs 6 and 7 1.2

−

22

−

ns

2.7

1.5 5.0 9.5 ns

3.0 to 3.6 1.5 4.0(1) 8.5 ns

see Figs 6 and 7 1.2

−

12

−

ns

2.7

1.5 3.6 8.0 ns

3.0 to 3.6 1.7 3.4(1) 7.0 ns

note 2

−

−

1.0 ns

see Figs 5 and 7 1.2

−

−

2.7

1.5 −

3.0 to 3.6 1.5 −

see Figs 6 and 7 1.2

−

−

2.7

1.5 −

3.0 to 3.6 1.5 −

see Figs 6 and 7 1.2

−

−

2.7

1.5 −

3.0 to 3.6 1.7 −

note 2

−

−

−

ns

9.5 ns

8.0 ns

−

ns

12.0 ns

11.0 ns

−

ns

10.0 ns

9.0 ns

1.5 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.

2003 May 07

9

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