74ABT640PWDH datasheet(5/10 Pages) PHILIPS

No. de pieza	74ABT640PWDH

Descripción Electrónicos	Octal transceiver with direction pin, inverting 3-State

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Fabricante Electrónico	PHILIPS [NXP Semiconductors]

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Philips Semiconductors

Product specification

74ABT640

Octal transceiver with direction pin, inverting

(3-State)

1998 Jan 16

5

AC CHARACTERISTICS

GND = 0V; tR = tF = 2.5ns; CL = 50pF, RL = 500Ω

LIMITS

SYMBOL

PARAMETER

WAVEFORM

Tamb = +25°C

VCC = +5.0V

Tamb = –40°C to +85°C

VCC = +5.0V ±0.5V

UNIT

Min

Typ

Max

Min

Max

tPLH

tPHL

Propagation delay

An to Bn or Bn to An

1

1.0

1.5

2.8

3.1

4.2

4.3

1.0

1.5

4.9

ns

tPZH

tPZL

Output enable time

to High and Low level

2

1.5

1.3

3.6

3.2

4.9

5.9

1.5

1.3

5.8

7.3

ns

tPHZ

tPLZ

Output disable time

from High and Low Level

2

2.5

2.0

5.2

4.1

6.5

5.3

2.5

2.0

6.8

5.5

ns

AC WAVEFORMS

VM = 1.5V, VIN = GND to 3.0V

An or Bn

INPUT

VM

Bn or An

OUTPUT

VM

tPHL

tPLH

SA00192

Waveform 1. Waveforms Showing the Input to Output

Propagation Delays

OE

INPUT

VM

tPZH

tPHZ

VOH

VM

VOL

tPZL

tPLZ

3.5V

0V

VOL + 0.3V

VOH – 0.3V

An or Bn

OUTPUT

An or Bn

OUTPUT

SA00207

Waveform 2. Waveforms Showing the 3-State Output Enable

and Disable Times

TEST CIRCUIT AND WAVEFORMS

CL = 50 pF

500

Ω

Load Circuit

DEFINITIONS

CL =

Load capacitance includes jig and probe capacitance;

see AC CHARACTERISTICS for value.

TEST

S1

tpd

open

tPLZ/tPZL

7 V

tPHZ/tPZH

open

SA00012

500

Ω

From Output

Under Test

S1

7 V

Open

GND

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74ABT640PWDH Datasheet(PDF) 5 Page - NXP Semiconductors

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