LTC2801_15 Datasheet, PDF (18/18 Pages) Linear Technology – 1.8V to 5.5V RS-232 Single and Dual Transceivers

LTC2801/LTC2802/
LTC2803/LTC2804
Typical Application
1.8V TO 5.5V
+
–
*
DC-DC
1.8V TO 5.5V
*
V_CC
PP_X
PP_Y
TXD
µP
PP_Z
RXD
L1
10µH
C1
220nF
C4
1µF
5
V_CC
7
9
SW
CAP
C5
220nF
12
V_L
10
PS
11
MODE
13 T2IN
LTC2804
T2OUT 4
14 T1IN
T1OUT 3
15 R2OUT
R2IN 2
16 R1OUT
R1IN 1
GND
8
*ADDITIONAL BYPASS CAPACITOR AS NEEDED
V_DD
V_EE
6
C2
1µF
17
C3
1µF
CTS
RX
UART
RTS
TX
2801 F22
Figure 22. Diagnostic Port Operating Directly Off Unregulated Battery Voltage
Related Parts
PART NUMBER
LT1780/LT1781
LTC1337
LTC1338
LT1039/LT1039-16
LTC1348
DESCRIPTION
2-Driver/2-Receiver RS232 Transceiver
3-Driver/5-Receiver RS232 Transceiver
5-Driver/3-Receiver RS232 Transceiver
3-Driver/3-Receiver RS232 Transceiver
3-Driver/5-Receiver RS232 Transceiver
COMMENTS
Single 5V Supply with 0.1μF Capacitors, 15kV ESD
Ultralow Power for DTE Applications
Ultralow Power for DCE Applications
30kΩ Input Impedance for Multidrop Applications
True RS232 Levels on 3.3V Supply
18 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^l FAX: [phone] ^l www.linear.com
2801234fe
LT 0510 REV E • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2005