Philips Semiconductors

Product specification

74ABT620

Octal transceiver with dual enable, inverting

(3-State)

2

1993 Jun 21

853–1611 10081

FEATURES

and 200 V per Machine Model

DESCRIPTION

The 74ABT620 high-performance BiCMOS device combines low

static and dynamic power dissipation with high speed and high

output drive.

The 74ABT620 device is an octal transceiver featuring inverting

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

The 74ABT620 is designed for asynchronous two-way

communication between data buses. The control function

implementation allows for maximum flexibility in timing. This device

allows data transmission from the A bus to the B bus or from the B

bus to the A bus, depending upon the logic levels at the Enable

inputs (OEBA and OEAB). The Enable inputs can be used to disable

the device so that the buses are effectively isolated.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

CONDITIONS

TYPICAL

UNIT

Propagation delay

An to Bn or Bn to An

3.1

ns

Input capacitance

OEAB, OEBA

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

74ABT620 N

74ABT620 N

SOT146-1

20-Pin plastic SO

–40

°C to +85°C

74ABT620 D

74ABT620 D

SOT163-1

20-Pin Plastic SSOP Type II

–40

°C to +85°C

74ABT620 DB

74ABT620 DB

SOT339-1

20-Pin Plastic TSSOP Type I

–40

°C to +85°C

74ABT620 PW

74ABT620PW 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

OEAB

A0

A1

A2

A3

A4

A5

A6

A7

GND

VCC

OEBA

B0

B1

B2

B3

B4

B5

B6

B7

SA00189

PIN DESCRIPTION

PIN NUMBER

SYMBOL

NAME AND FUNCTION

1

OEAB

Output enable input, A side to B side

(active-High)

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

OEBA

Output enable input, B side to A side

(active-Low)

10

GND

Ground (0V)

20

Positive supply voltage