74LVC373APW datasheet(7/12 Pages) PHILIPS

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Philips Semiconductors

Product specification

74LVC373A

Octal D-type transparent latch with 5-volt

tolerant inputs/outputs (3-State)

1998 Jul 29

AC CHARACTERISTICS

GND = 0V; tr = tf v 2.5ns; CL = 50pF; RL = 500Ω; Tamb = –40°C to +85°C.

LIMITS

SYMBOL

PARAMETER

WAVEFORM

VCC = 3.3V ±0.3V

VCC = 2.7V

VCC = 1.2V

UNIT

MIN

TYP1

MAX

MIN

MAX

TYP

tPHL

tPLH

Propagation delay

Dn to Qn

1, 5

1.5

4.2

6.8

1.5

7.8

tPHL

tPLH

Propagation delay

LE to Qn

2, 5

1.5

4.6

7.2

1.5

8.2

tPZH

tPZL

3-State output enable time

OE to Qn

3, 5

1.5

4.8

7.7

1.5

8.7

tPHZ

tPLZ

3-State output disable time

OE to Qn

3, 5

1.5

4.3

6.1

1.5

7.1

LE pulse width HIGH

3.0

1.5

–

3.0

–

tSU

Setup time

Dn to LE

2.0

–

2.0

–

Hold time

Dn to LE

1.5

0.3

–

1.5

–

NOTE:

1. Unless otherwise stated, all typical values are at VCC = 3.3V and Tamb = 25°C.

AC WAVEFORMS

VM = 1.5V at VCC w 2.7V; VM = 0.5 VCC at VCC t 2.7V.

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

output load.

VX = VOL + 0.3V at VCC w 2.7V; VX = VOL + 0.1 VCC at VCC t 2.7V

VY = VOH –0.3V at VCC w 2.7V; VY = VOH – 0.1 VCC at VCC t 2.7V

SY00041

INPUT

tPHL

tPLH

VOL

GND

VOH

OUTPUT

Waveform 1. Input (Dn) to output (Qn) propagation delays.

tPHL

tPLH

LE INPUT

Qn OUTPUT

SA00388

GND

VOH

VOL

Waveform 2. Latch enable input (LE) pulse width, the latch

enable input to output (Qn) propagation delays

tPLZ

tPZL

nOE INPUT

GND

VCC

Qn OUTPUT

LOW-to-OFF

OFF-to-LOW

VOL

VOH

Qn OUTPUT

HIGH-to-OFF

OFF-to-HIGH

GND

outputs

enabled

outputs

enabled

outputs

disabled

tPHZ

tPZH

SW00207

Waveform 3. 3-State enable and disable times.

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