74LVCH32245AEC Просмотр технического описания (PDF) - Philips Electronics

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74LVCH32245AEC

32-bit bus transceiver with direction pin; 5 V tolerant; 3-state

Philips Electronics 

Philips Semiconductors

32-bit bus transceiver with direction pin;

5 V tolerant; 3-state

Product specification

74LVC32245A;

74LVCH32245A

AC CHARACTERISTICS

Ground = 0 V; tr = tf ≤ 2.5 ns; CL = 50 pF; RL = 500 Ω.

SYMBOL

tPHL/tPLH

tPZH/tPZL

tPHZ/tPLZ

PARAMETER

propagation delay

nAn to nBn; nBn to nAn

3-state output enable time

nOE to nAn; nOE to nBn

3-state output disable time

nOE to nAn; nOE to nBn

TEST CONDITIONS

WAVEFORMS

see Figs 4 and 6

see Figs 5 and 6

see Figs 5 and 6

VCC (V)

2.7

3.0 to 3.6

2.7

3.0 to 3.6

2.7

3.0 to 3.6

Tamb = −40 to +85 °C

MIN. TYP.(1) MAX.

1.5

−

5.5

1.5

3.0

4.5

1.5

−

7.1

1.5

4.0

6.1

1.5

−

6.6

1.5

4.0

5.6

UNIT

ns

ns

ns

Note

1. All typical values are measured at VCC = 3.3 V and Tamb = 25 °C.

AC WAVEFORMS

handbook, halfpage VI

nAn, nBn

INPUT

GND

VOH

nBn, nAn

OUTPUT

VOL

t PHL

VM

VM

t PLH

MNA477

VM = 1.5 V at VCC ≥ 2.7 V or

VM = 0.5 × VCC at VCC < 2.7 V.

VOL and VOH are typical output voltage drop that occur with the output load.

Fig.4 Input nAn, nBn to output nBn, nAn propagation delay times.

1999 Sep 01

8

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