Obsolete

Product(s)

- Obsolete

Product(s)

Pin configuration

STLV3243EB

4/16

E1

GND

Ground

E2

Negative terminal of voltage- charge pump capacitor

E3

FORCEOFF

Drive low to shut down transmitters and on-board power supply. This over-

rides all automatic circuitry and FORCEON

E4

INVALID

Output of the valid signal detector. Indicates if a valid RS-232 level is

present on receiver inputs logic "1"

E5

Non-inverting complementary receiver output, always active for wake-up

E6

Second receiver output voltage

Table 2.

Pin description (continued)

Pin n°

Symbol

Name and function

Table 3.

Invalid truth table

RS-232 signal present at any receiver input

INVALID output

YES

H

NO

L

Table 4.

Output control truth table

FORCE

ON

FORCE

OFF

Valid receiver level

Operation status

X

0

X

Shutdown (FORCEOFF)

HIGH Z

HIGH Z

ACTIVE

11

X

Normal operating

(FORCEON)

ACTIVE

ACTIVE

ACTIVE

0

1

YES

Normal operating

(Auto-power-down)

ACTIVE

ACTIVE

ACTIVE

01

NO

Shutdown

(Auto-power-down)

HIGH Z

ACTIVE

ACTIVE

Obsolete

Product(s)

- Obsolete

Product(s)