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74ABT640DB,118

Octal transceiver with direction pin, inverting (3-State)

NXP Semiconductors. 

Philips Semiconductors

Octal transceiver with direction pin, inverting

(3-State)

Product specification

74ABT640

FEATURES

• Octal bidirectional bus interface

• 3-State buffers

• Power-up 3-State

• Live insertion/extraction permitted

• Output capability: +64mA/–32mA

• Latch-up protection exceeds 500mA per Jedec Std 17

• ESD protection exceeds 2000 V per MIL STD 883 Method 3015

and 200 V per Machine Model

DESCRIPTION

The 74ABT640 high-performance BiCMOS device combines low

static and dynamic power dissipation with high speed and high

output drive.

The 74ABT640 device is an octal transceiver featuring inverting

3-State bus compatible outputs in both send and receive directions.

The control function implementation minimizes external timing

requirements. The device features an Output Enable (OE) input for

easy cascading and a Direction (DIR) input for direction control.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

tPLH

tPHL

CIN

CI/O

ICCZ

Propagation delay

An to Bn or Bn to An

Input capacitance

DIR, OE

I/O capacitance

Total supply current

CONDITIONS

Tamb = 25°C; GND = 0V

CL = 50pF; VCC = 5V

VI = 0V or VCC

Outputs disabled; VO = 0V or VCC

Outputs disabled; VCC =5.5V

TYPICAL

3.1

4

7

50

UNIT

ns

pF

pF

µA

ORDERING INFORMATION

PACKAGES

20-Pin Plastic DIP

20-Pin plastic SO

20-Pin Plastic SSOP Type II

20-Pin Plastic TSSOP Type I

TEMPERATURE RANGE OUTSIDE NORTH AMERICA

–40°C to +85°C

74ABT640 N

–40°C to +85°C

74ABT640 D

–40°C to +85°C

74ABT640 DB

–40°C to +85°C

74ABT640 PW

NORTH AMERICA

74ABT640 N

74ABT640 D

74ABT640 DB

74ABT640PW DH

DWG NUMBER

SOT146-1

SOT163-1

SOT339-1

SOT360-1

PIN CONFIGURATION

DIR 1

A0 2

A1 3

A2 4

A3 5

A4 6

A5 7

A6 8

A7 9

GND 10

20 VCC

19 OE

18 B0

17 B1

16 B2

15 B3

14 B4

13 B5

12 B6

11 B7

PIN DESCRIPTION

PIN

NUMBER

SYMBOL

NAME AND FUNCTION

1

DIR

Direction control input

2, 3, 4, 5,

6, 7, 8, 9

A0 – A7 Data inputs/outputs (A side)

18, 17, 16,

15,

14, 13, 12, 11

B0 – B7

Data inputs/outputs (B side)

19

OE

Output enable input, B side to A

side (active-Low)

10

GND Ground (0V)

20

VCC

Positive supply voltage

SA00208

1998 Jan 16

2

853–1612 18864

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