74LVC4245ADH datasheet(7/16 Pages) PHILIPS

No. de pieza	74LVC4245ADH

Descripción Electrónicos	Octal dual supply translating transceiver; 3-state

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Fabricante Electrónico	PHILIPS [NXP Semiconductors]

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7 / 16 page

1999 Jun 15

7

Philips Semiconductors

Product speciﬁcation

Octal dual supply translating transceiver; 3-state

74LVC4245A

AC CHARACTERISTICS

GND = 0 V; tr =tf ≤ 2.5 ns; CL = 50 pF; Tamb = −40 to 85 °C.

Notes

1. Typical values are measured at VCCA = 5.0 V and VCCB = 3.3 V and Tamb =25 °C.

2. Typical values are measured at VCCA = 5.0 V and Tamb =25 °C.

SYMBOL

PARAMETER

WAVEFORMS

LIMITS

UNIT

VCCA =5V ± 0.5 V

VCCB = 3.3 V ± 0.3 V

VCCB = 2.7 V

MIN.

TYP.(1)

MAX.

MIN. TYP.(2)

MAX.

tPHL/tPLH

propagation delay

An to Bn

see Figs 4 and 7

1.5

4.0

6.5

1.5

4.5

7.0

ns

propagation delay

Bn to An

see Figs 4 and 7

1.5

4.0

6.5

1.5

4.5

7.0

ns

tPZH/tPZL

3-state output enable

time OE to An

see Figs 6 and 7

1.5

6.2

10

1.5

7.0

11.0

ns

3-state output enable

time OE to Bn

see Figs 6 and 7

1.5

5.0

8.1

1.5

5.7

8.7

ns

tPHZ/tPLZ

3-state output disable

time OE to An

see Figs 6 and 7

1.5

5.3

7.5

1.5

5.7

8.0

ns

3-state output disable

time OE to Bn

see Figs 6 and 7

1.5

5.8

7.8

1.5

6.2

8.5

ns

AC WAVEFORMS

Fig.4

The input (An, Bn) to output (Bn, An)

propagation delays.

handbook, halfpage

MNA366

An, Bn

INPUT

Bn, An

OUTPUT

tPHL

tPLH

GND

VI

VM

VOH

VOL

VM = 1.5 V at 2.7 V ≤ VCCB ≤ 3.6 V;

VM = 0.5VCCA at VCCA ≥ 4.5 V;

VOL and VOH are typical output voltage drop that occur

with the output load.

Fig.5 Supply operation area.

handbook, halfpage

1.5

2.7

5.7

Complies with TTL levels

3.9

0.9

MNA454

3.9

2.1

4.5

5.1

3.3

1.5

2.1

2.7

3.3

3.6

1.2

1.8

2.4

3.0

VCCA (V)

VCCB

(V)

VCCA ≥ VCCB

Full operation

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