2

PIN CONFIGURATION

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20-Pin SOIC, QSOP

PIN DESCRIPTION

NAME

I/O

DESCRIPTION

Ai

I/O

Data Bus A

Bi

I/O

Data Bus B

T/R

I

Direction select

OE

I

Output Enable

GND

I

Signal Ground

I

+ 5V supply

FUNCTION TABLE

OE

T/R

A

B

Function

H

X

Z

Z

Disable

L

L

Output

Input

Bus B to Bus A

L

H

Input

Output

Bus A to Bus B

T/R

A0

A1

A2

A3

A4

A5

A6

A7

GND

OE

B0

B1

B2

B3

B4

B5

B6

B7

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

ABSOLUTE MAXIMUM RATINGS

AC Input voltage (< 20ns) ....................................... –3.0V

Output sink current (per pin) ................................ 120mA

Storage temperature ................................ –65°C to 150°C

Junction temperature ............................................. 150°C

Thermal Impedance (

SOIC ............................................................... 96°C/W

QSOP ............................................................ 100°C/W

L = Logic Low

H = Logic High

X = Don’t Care

Z = High Impedance