Linear Technology LTM2882-3 RS232 µModule Isolator Demo Board (3.3V Supply) DC1554A-A DC1554A-A Data Sheet
Product codes
DC1554A-A
LTM2882
8
2882fd
TesT circuiTs
Figure 3. Receiver Timing Measurement
Figure 4. Auxiliary Channel Timing Measurement
2882 F03
RIN
ROUT
C
L
t
PHLR
t
PLHR
t
FR
t
RR
10%
½V
L
90%
90%
10%
1.5V
3V
V
OL
V
OH
–3V
RIN
ROUT
t
r
,
t
f
≤ 40ns
2882 F04
DIN
DOUT
C
L
t
PLHL
t
PHLL
t
RL
t
FL
90%
10%
10%
90%
½V
L
½V
CC2
V
L
V
OH
V
OL
0V
DIN
DOUT
Figure 1. Driver Slew Rate and Timing Measurement
Figure 2. Driver Enable/Disable Times
2882 F01
R
L
TIN
TOUT
C
L
t
PLHD
t
PHLD
t
THL
t
TLH
3V
0V
–3V
½V
L
V
L
V
OLD
V
OHD
0V
TIN
TOUT
t
r
,
t
f
≤ 40ns
2882 F02
R
L
DE
TOUT
t
r
,
t
f
≤ 40ns
0 OR V
L
C
L
t
PZHD
t
PZLD
t
PHZD
t
PLZD
V
OLD
– 0.5V
V
OHD
– 0.5V
½V
CC2
V
CC2
V
OHD
V
OLD
0V
0V
0V
0V
TOUT
TOUT
DE
–5V
5V