LT1080 Datasheet, PDF (12/12 Pages) Linear Technology – Advanced Low Power 5V RS232 Dual Driver/Receiver

LT1080/LT1081
TYPICAL APPLICATIO
Supporting an LT1039 (Triple Driver/Receiver)
SHUTDOWN
5V
18 _ON/OFF
17
V_CC
LT1080
TTL INPUT
RS232 OUTPUT
18
V_CC
ON/OFF ¹⁷
LT1039
TTL INPUT
RS232 OUTPUT
TTL INPUT
RS232 OUTPUT
TTL INPUT
RS232 OUTPUT
TTL OUTPUT
RS232 INPUT
5k
TTL OUTPUT
*C1
2 _C1+
RS232 INPUT
5k
1µF
4 _C1–
5 _C2+
V^{+ 3}
1µF
6 _C2–
V^{– 7}
GND
1µF
16
TTL INPUT
TTL OUTPUT
RS232 OUTPUT
RS232 INPUT
30k
TTL OUTPUT
RS232 INPUT
30k
TTL OUTPUT
1 _V+
9 _V–
1µF
RS232 INPUT
30k
GND
10
1080/81 • TA02
*IN APPLICATIONS WHERE A SEPARATE SECOND POSITIVE SUPPLY IS AVAILABLE
(SUCH AS 5V AND 12V), THE 12V SUPPLY MAY BE CONNECTED TO PIN 2 AND
C1 DELETED. THE POWER SUPPLY CIRCUITRY WILL THEN INVERT THE 12V SUPPLY.
THE 5V SUPPLY IS STILL NEEDED TO POWER THE BIASING CIRCUITRY AND RECEIVERS.
RELATED PARTS
PART NUMBER
LT1180A/LT1181A
LT1780/LT1781
LT1381
LT1130A/LT1140A
LTC1383
LTC1386
DESCRIPTION
5V Low Power 2DR/2TX RS232 Transceiver
5V Low Power 2DR/2TX RS232 Transceiver
5V Low Power 2DR/2TX RS232 Transceiver
5V RS232 Transceivers
5V Low Power 2DR/2RX RS232 Transceiver
3.3V Low Power EIA/TIA562 Transceiver
COMMENTS
0.1µF Capacitors, 10kV ESD
15kV ESD
16-Pin Narrow SO Package
Up to 5DR/5RX
Low Supply Current I_CC = 220µA
Low Supply Current I_CC = 200µA
12 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^q FAX:[phone] ^q www.linear-tech.com
10801fd LT/TP 0400 2K REV D • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1991