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LTC2855 Datasheet(PDF) 12 Page - Analog Devices

Part # LTC2855
Description  ±60V Fault Protected 3V to 5.5V RS485/RS422 Transceiver with Level 4 IEC ESD
PDF  24 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC2855 Datasheet(HTML) 12 Page - Analog Devices

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LTC2862A
12
Rev. A
For more information www.analog.com
TEST CIRCUITS
RECEIVER
CL
RO
VCM
±VAB/2
±VAB/2
A
B
2862A FO6a
tPLHR
tPHLR
VAB
VCC
–VAB
A–B
RO
0
tRR
tFR
90%
90%
2862A F06b
10%
10%
0
1/2 VCC
1/2 VCC
tSKEWR = |tPLHR – tPHLR|
RECEIVER
CL
RL
RO
RE
A
B
2862A FO7a
0V OR VCC
DI = 0V OR VCC
VCC OR 0V
1/2 VCC
tZLR,
tZLSR
tZHR,
tZHSR
tHZR,
tSHDNR
VCC
1/2 VCC
VOL
VOH
1/2 VCC
0V
RE
RO
RO
2862A F07b
tLZR
1/4 VCC
1/4 VCC
3/4 VCC
3/4 VCC
1/2 VCC
Figure 6. Receiver Propagation Delay Measurements
Figure 7. Receiver Enable/Disable Time Measurements
Figure 8. Failsafe Delay Measurements
RECEIVER
CL
RO
VCM
±VAB/2
±VAB/2
A
B
2862A FO8a
tPFSN, tPFSNS
tPFSX, tPFSXS
0
VCC
–VAB
A–B
RO
0
2862A F08b
–200mV
1/2 VCC
1/2 VCC



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