LT1342 Linear Technology, LT1342 Datasheet - Page 8

• Manufacturer Part Number: LT1342
• Description: 5V RS232 Transceiver with 3V Logic Interface
• Manufacturer: Linear Technology

RELATED PARTS
LT1342
PART NUMBER
LT1137A
LTC1327
LT1330
LT1331
LTC1347
LTC1348
8
TYPICAL APPLICATIO S
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
MOUSE
OPTICS
LOGIC
V
V
+
DESCRIPTION
3-DR/5-RX RS232 Transceiver
3-DR/5-RX RS562 Transceiver
3-DR/5-RX RS232
3-DR/5-RX RS232/RS562 Transceiver
3-DR/5-RX Micropower RS232 Transceiver
3-DR/5-RX RS232 Transceiver
–
5V V
0.1 F
CC
12V V
0.1 F
+
LINE
U
TO
(1)
(5)
Operation Using 5V and 12V Power Supplies
DRIVER 1 OUT
DRIVER 2 OUT
DRIVER 3 OUT
DB9
ON/0FF = 5V
(9)
Typical Mouse Driving Application
RX1 IN
RX2 IN
RX3 IN
RX4 IN
RX5 IN
3V V
V
C1
C1
V
CC
+
+
–
L
DCD
DSR
RX
RTS
TX
CTS
DTR
RI
10
11
12
13
14
1
2
3
4
5
6
7
8
9
0.1 F
0.1 F
2 0.1 F
LT1342
DRIVER 1 OUT
DRIVER 2 OUT
DRIVER 3 OUT
5V V
ON/OFF
RX1 IN
RX2 IN
RX3 IN
RX4 IN
RX5 IN
3V V
CC
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
L
+
10
11
12
13
14
DRIVER 1 IN
RX1 OUT
DRIVER 2 IN
RX2 OUT
RX3 OUT
RX4 OUT
DRIVER 3 IN
RX5 OUT
V
DRIVER DISABLE
NC
1
2
3
4
5
6
7
8
9
GND
COMMENTS
3.3V Operation
3V Logic Interface
5V RS232 or 3V RS562 Operation
5 Receivers Active in Shutdown
True RS232 from 3V
–
15kV IEC-1000-4-2 ESD Protection
LT1342 • TA03
LT1342
2 0.1 F
TO LOGIC
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1342fa LT/TP 1098 REV A 2K • PRINTED IN USA
0.1 F
V
DRIVER 1 IN
RX1 OUT
DRIVER 2 IN
RX2 OUT
RX3 OUT
RX4 OUT
DRIVER 3 IN
RX5 OUT
GND
DRIVER DISABLE
NC
–
LINEAR TECHNOLOGY CORPORATION 1993
2 0.1 F
LOGIC “0”
LOGIC “0”
MOUSE DATA
LOGIC “1”
LT1342 • TA04
0.1 F