ADM3491 Analog Devices, ADM3491 Datasheet - Page 6

• Manufacturer Part Number: ADM3491
• Description: 3.3 V/ Full Duplex/ 840 uA 20 Mbps/ EIA RS-485 Transceiver
• Manufacturer: Analog Devices

ADM3491
Test Circuits
Figure 4. Driver/Receiver Propagation Delay Test Circuit
Figure 3. Driver Differential Output Delay Test Circuit
Figure 1. Driver Voltage Measurement Test Circuit
Figure 2. Driver Enable/Disable Test Circuit
0V OR 3V
DE IN
DI
V
CC
D
DI
D
DE
RL
DIFF
RL
S1
V
OD
DIFF
C
C
L1
L2
R/2
R/2
C
C
V
A
B
C
L1
L2
R
OUT
L
V
L
OUT
V
R
OC
V
RE
CC
S2
RO
–6–
Figure 5. Driver Voltage Measurement Test Circuit 2
Figure 8. Receiver Propagation Delay Test Circuit
Figure 7. Driver Propagation Delay Test Circuit
Figure 6. Receiver Enable/Disable Test Circuit
+1.5V
–1.5V
IN
0V
RE IN
S1
+1.5V
DE
3V
V
CC
V
ID
S1
RE
V
RE
OD3
R
375
375
L
V
C
OM
L
C
V
C
R
OUT
L
L
L
R
V
V
L
OUT
TST
V
V
OUT
CC
S2
REV. 0