Logic diagram and I/O equivalent circuit

ST2G3236

4/20

1.1

Truth table

1.2

Recommended power-up sequence is as follows:

1.

2.

Apply power to the OE input and to the respective data inputs. This may occur at the

same time as Step 1.

3.

4.

Drive the OE input LOW to enable the device.

1.3

The recommended power-down sequence is as follows:

1.

Drive OE input HIGH to disable the device

2.

3.

Table 1.

Truth table

Inputs

Function

Output

OE

DIRn

A BUS

B BUS

L

L

Output

Input

B => A

L

H

Input

Output

B <= A

H

X

High-Z

High-Z

HIGH-Z