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LTC2852CMS Datasheet(PDF) 7 Page - Linear Technology

Part # LTC2852CMS
Description  3.3V 20Mbps RS485/RS422 Transceivers
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC2852CMS Datasheet(HTML) 7 Page - Linear Technology

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LTC2850/LTC2851/LTC2852
7
285012fc
Figure 5. Driver Enable and Disable Timing Measurements
DRIVER
DI
VCC
OR
GND
GND
OR
VCC
VCC
OR
GND
RL
RL
CL
285012 F05a
Y
Z
DE
CL
tZLD,
tZLSD
tZHD,
tZHSD
tHZD,
tSHDN
tLZD
1/2 VCC
1/2 VCC
1/2 VCC
DE
Y OR Z
Z OR Y
VCC
VCC
VOL
VO
VOH
0V
0V
0.5V
0.5V
285012 F05b
Figure 6. Receiver Propagation Delay Measurements
TEST CIRCUITS
A
B
VCM
±VAB/2
±VAB/2
RO
CL
285012 F06a
RECEIVER
tPLHR
tPHLR
90%
0
90%
10%
tR
90%
10%
tF
tSKEWR = |tPLHR – tPHLR|
90%
1/2 VCC
1/2 VCC
tRR
tFR
10%
285012 F06b
10%
VAB
VCC
VO
0
–VAB
RO
A-B
A
B
0V OR VCC
VCC OR 0V
RO
RE
CL
DI = 0V OR VCC
RL
VCC
OR
GND
285012 F07a
RECEIVER
tZLR,
tZLSR
tZHR,
tZHSR
tHZR
tLZR
1/2 VCC
1/2 VCC
1/2 VCC
RE
RO
RO
VCC
VCC
VOL
VO
VOH
0V
0V
0.5V
0.5V
285012 F07b
Figure 7. Receiver Enable/Disable Time Measurements



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