SP3238 Ver la hoja de datos (PDF) - Signal Processing Technologies

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Fabricante

SP3238

Intelligent +3.0V to +5.5V RS-232 Transceiver

Signal Processing Technologies 

PIN DESCRIPTION

NAME

FUNCTION

PIN

NO.

C2+

Positive terminal of the symmetrical charge-pump capacitor C2.

1

GND

Ground.

2

C2-

Negative terminal of the symmetrical charge-pump capacitor C2.

3

V-

Regulated -5.5V output generated by the charge pump.

4

T1OUT

RS-232 driver output.

5

T2OUT

RS-232 driver output.

6

T3OUT

RS-232 driver output.

7

R1IN

RS-232 receiver input.

8

R2IN

RS-232 receiver input.

9

T4OUT

RS-232 driver output.

10

R3IN

RS-232 receiver input.

11

T5OUT

RS-232 driver output.

12

ONLINE

Apply logic HIGH to override AUTO ON-LINE® circuitry keeping drivers active

(SHUTDOWN must also be logic HIGH, refer to Table 2).

13

SHUTDOWN

Apply logic LOW to shut down drivers and charge pump. This overrides all AUTO

ON-LINE® circuitry and ONLINE (refer to Table 2).

14

STATUS TTL/CMOS Output indicating if a RS-232 signal is present on any receiver input.

15

R1OUT

Non-inverting receiver-1 output, active in shutdown.

16

T5IN

TTL/CMOS driver input.

17

R3OUT

TTL/CMOS receiver output.

18

T4IN

TTL/CMOS driver input.

19

R2OUT

TTL/CMOS receiver output.

20

R1OUT

TTL/CMOS receiver output.

21

T3IN

TTL/CMOS driver input.

22

T2IN

TTL/CMOS driver input.

23

T1IN

TTL/CMOS driver input.

24

C1-

Negative terminal of the symmetrical charge-pump capacitor C1.

25

VCC

+3.0V to +5.5V supply voltage.

26

V+

Regulated +5.5V output generated by the charge pump.

27

C1+

Positive terminal of the symmetrical charge-pump capacitor C1

28

Table 1. Device Pin Description

Rev. 6/30/03

SP3238 Intelligent +3.0V to +5.5V RS-232 Transceiver

5

© Copyright 2003 Sipex Corporation

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