DIN1

DOUT1

RIN1

ROUT1

DIN2

DOUT2

RIN2

ROUT2

11

10

12

9

14

7

13

8

10

MAX232E

SLLS723C – APRIL 2006 – REVISED AUGUST 2016

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8.4 Device Functional Modes

The device is in normal operation.

When MAX232E is unpowered, it can be safely connected to an active remote RS-232 device.

8.4.3 Truth Tables

Table 1 and Table 2 list the functions of this device.

(1)

H = high level, L = low level

Table 1. Function Table for

INPUT

DIN

OUTPUT

DOUT

L

H

H

L

(1)

H = high level, L = low level, Open

= input disconnected or connected

driver off

Table 2. Function Table for

INPUT

RIN

OUTPUT

ROUT

L

H

H

L

Open

H

Figure 9. Logic Diagram (Positive Logic)