9
LTC490
490fb
TYPICAL APPLICATIO S
U
RS232 Receiver
RS232 to RS485 Level Transistor with Hysteresis
LTC490 • TA02
5.6k
RECEIVER
RS232 IN
1/2 LTC490
RX
120Ω
DRIVER
Y
Z
R = 220k
10k
RS232 IN
5.6k
LTC490 • TA03
HYSTERESIS = 10k • ≈
1/2 LTC490
VY – VZ
————
R
19k
——
R
