74ALVC245 datasheet(7/13 Pages) PHILIPS

7 / 13 page

2003 Jul 10

Philips Semiconductors

Product speciﬁcation

Octal bus transceiver; 3-state

74ALVC245

AC CHARACTERISTICS

Note

1. All typical values are measured at Tamb =25 °C.

AC WAVEFORMS

SYMBOL

PARAMETER

TEST CONDITIONS

MIN.

TYP.(1)

MAX.

UNIT

WAVEFORMS

VCC (V)

Tamb = −40 to +85 °C

tPHL/tPLH

propagation delay

An to Bn; Bn to An

see Figs 4 and 6

1.65 to 1.95

1.0

2.7

6.0

2.3 to 2.7

1.0

2.1

3.5

2.7

1.0

3.0

3.6

3.0 to 3.6

1.0

2.3

3.4

tPZH/tPZL

3-state output enable time

OE to An; OE to Bn

see Figs 5 and 6

1.65 to 1.95

1.0

4.0

8.6

2.3 to 2.7

1.0

3.0

6.0

2.7

1.0

2.6

6.3

3.0 to 3.6

1.0

2.9

5.5

tPHZ/tPLZ

3-state output disable time

OE to An; OE to Bn

see Figs 5 and 6

1.65 to 1.95

1.0

4.4

8.0

2.3 to 2.7

1.0

2.3

4.8

2.7

1.0

3.3

5.3

3.0 to 3.6

1.0

3.2

5.5

handbook, halfpage

MNA176

An, Bn input

Bn, An output

tPLH

tPHL

GND

VOH

VOL

Fig.4 Input (An, Bn) to output (Bn, An) propagation delay times.

VCC

INPUT

tr =tf

1.65 to 1.95 V

0.5

× VCC VCC

≤ 2.0 ns

2.3 to 2.7 V

0.5

× V

VCC

≤ 2.0 ns

2.7 V

1.5 V

2.7 V

≤ 2.5 ns

3.0 to 3.6 V

1.5 V

2.7 V

≤ 2.5 ns

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