74AHC245 datasheet(8/20 Pages) PHILIPS

8 / 20 page

1999 Sep 28

Philips Semiconductors

Product speciﬁcation

Octal bus transceiver; 3-state

74AHC245; 74AHCT245

AC CHARACTERISTICS

Type 74AHC245

GND = 0 V; tr =tf ≤ 3.0 ns.

SYMBOL

PARAMETER

TEST CONDITIONS

Tamb (°C)

UNIT

WAVEFORMS

−40 to +85

−40 to +125

MIN.

TYP.

MAX.

MIN.

MAX.

MIN.

MAX.

VCC = 3.0 to 3.6 V; note 1

tPHL/tPLH

propagation delay

An to Bn; Bn to An

see Figs 4 and 6 15 pF

−

5.0

8.4

1.0

10.0

1.0

10.5

tPZL/tPZH

propagation delay

OE to An;

OE to Bn; signal

name DIR

see Figs 5 and 6

−

6.5

13.2

1.0

15.5

1.0

16.5

tPLZ/tPHZ

propagation delay

OE to An;

OE to Bn; signal

name DIR

−

7.5

12.5

1.0

15.5

1.0

16.0

tPHL/tPLH

propagation delay

An to Bn; Bn to An

see Figs 4 and 6 50 pF

−

6.5

11.9

1.0

13.5

1.0

15.0

tPZL/tPZH

propagation delay

OE to An;

OE to Bn; signal

name DIR

see Figs 5 and 6

−

9.0

16.7

1.0

19.0

1.0

21.0

tPLZ/tPHZ

propagation delay

OE to An;

OE to Bn; signal

name DIR

−

10.0

15.8

1.0

18.0

1.0

20.0

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