Linear Technology LTM2882-3 RS232 µModule Isolator Demo Board (3.3V Supply) DC1554A-A DC1554A-A Hoja De Datos
Los códigos de productos
DC1554A-A
LTM2882
20
2882fd
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
LINEAR TECHNOLOGY CORPORATION 2010
LT 1112 REV D • PRINTED IN USA
relaTeD parTs
Typical applicaTions
PART NUMBER
DESCRIPTION
COMMENTS
LTM2881
Isolated RS485/RS422 µModule Transceiver with
Low EMI Integrated DC/DC Converter
20Mbps, ±15kV HBM ESD, 2500V
RMS
Isolation with 1W Power
LTC2870/LTC2871 RS232/RS485 Multiprotocol Transceivers with
Integrated Termination
20Mbps RS485 and 500kbps RS232, ±26kV ESD, 3V to 5V Operation
LTC2804
1Mbps RS232 Transceiver
Dual Channel, Full-Duplex, ±10kV HBM ESD
LTC1535
Isolated RS485 Transceiver
2500 V
RMS
Isolation with External Transformer Driver
Figure 16. Isolated Gate Drive with Overcurrent Detection
Figure 14. Isolated RS232 Interface with Handshaking
Figure 15. Isolated Dual Inverting Level Translator
2882 F14
ON
DIN
T1IN
R2OUT
T2IN
R2OUT
DE
DOUT
T1OUT
R1IN
T2OUT
R2IN
LTM2882
µC
PERIPHERAL
V
L
V
CC
R
X
T
X
RTS
CTS
T
X
D
R
X
D
P
Y
P
Z
V
CC2
GND
GND2
3.3V (LTM2882-3)
5V (LTM2882-5)
ISOLA
TION BARRIER
2882 F15
ON
DIN
T1IN
R1OUT
T2IN
R2OUT
DE
DOUT
T1OUT
R1IN
T2OUT
R2IN
LTM2882
V
L
V
CC
GND
3.3V (LTM2882-3)
5V (LTM2882-5)
GND2
1.62V TO 5.5V
ISOLA
TION BARRIER
ON
OFF
V
L
0V
V
L
0V
–25V TO 0V
3V TO 25V
–25V TO 0V
3V TO 25V
2882 F16
ON
DIN
T1IN
R1OUT
T2IN
R2OUT
DE
DOUT
T1OUT
R1IN
T2OUT
R2IN
LTM2882
V
L
V
CC
V
CC2
GND
GND2
+V
S
3k
IRLML2402
IRLML6402
470pF
1k
1k
3.3V (LTM2882-3)
5V (LTM2882-5)
ISOLA
TION BARRIER
RESET
FAULT
PWMA
PWMB
R
ILIM
= 0.6/MAX CURRENT
47pF
CMPT2369-LTV
3k
LOGIC
LEVEL
FETS