Input

VCC

TYPICAL OF ALL OUTPUTS

Output

VCC

GND

GND

EQUIVALENT OF EACH INPUT

Copyright © 2016, Texas Instruments Incorporated

11

AM26C31

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SLLS103O – DECEMBER 1990 – REVISED JUNE 2016

Product Folder Links: AM26C31

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Copyright © 1990–2016, Texas Instruments Incorporated

Functional Block Diagrams (continued)

Figure 7. Schematics of Inputs and Outputs

8.3 Feature Description

8.3.1 Active-High and Active-Low

The device can be configured using the G and G logic inputs to select transmitter output. A logic high on the G

pin or a logic low on the G pin enables the device to operate. These pins are simply a way to configure the logic

to match that of the receiving or transmitting controller or microprocessor.

8.3.2 Operates from a Single 5-V Supply

Both the logic and transmitters operate from a single 5-V rail, making designs much more simple. The line drivers

and receivers can operate off the same rail as the host controller or a similar low voltage supply, thus simplifying

power structure.

8.4 Device Functional Modes

Table 1 lists the functional modes of the AM26C31.

(1)

H = High level,

L = Low level,

X = Irrelevant,

Z = High impedance (off)

INPUT

A

ENABLES

OUTPUTS

G

G

Y

Z

H

H

X

H

L

L

H

X

L

H

H

X

L

H

L

L

X

L

L

H

X

L

H

Z

Z