Philips Semiconductors

Product specification

74ABT640

Octal transceiver with direction pin, inverting

(3-State)

2

1998 Jan 16

853–1612 18864

FEATURES

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

CONDITIONS

TYPICAL

UNIT

Propagation delay

An to Bn or Bn to An

3.1

ns

Input capacitance

DIR, OE

4

pF

I/O capacitance

7

pF

Total supply current

50

µA

ORDERING INFORMATION

PACKAGES

TEMPERATURE RANGE

OUTSIDE NORTH AMERICA

NORTH AMERICA

DWG NUMBER

20-Pin Plastic DIP

–40

°C to +85°C

74ABT640 N

74ABT640 N

SOT146-1

20-Pin plastic SO

–40

°C to +85°C

74ABT640 D

74ABT640 D

SOT163-1

20-Pin Plastic SSOP Type II

–40

°C to +85°C

74ABT640 DB

74ABT640 DB

SOT339-1

20-Pin Plastic TSSOP Type I

–40

°C to +85°C

74ABT640 PW

74ABT640PW DH

SOT360-1

PIN CONFIGURATION

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

DIR

A0

A1

A2

A3

A4

A5

A6

A7

GND

VCC

OE

B0

B1

B2

B3

B4

B5

B6

B7

SA00208

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

Positive supply voltage