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LT1791CS Datasheet(PDF) 9 Page - Linear Technology

Part # LT1791CS
Description  60V Fault Protected RS485/RS422 Transceivers
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1791CS Datasheet(HTML) 9 Page - Linear Technology

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LT1785/LT1785A/
LT1791/LT1791A
9
178491fb
SWITCHING TIME WAVEFORMS
Figure 5. Driver Propagation Delays
DI
5V
1.5V
tPLH
tr
tSKEW
1/2 VO
VO
f = 125kHz, tr ≤ 10ns, tf ≤ 10ns
90%
10%
0V
B
A
VO
–VO
0V
90%
1.5V
tPHL
tSKEW
1/2 VO
10%
tf
VDIFF = V(A) – V(B)
1785/91 F05
Figure 6. Driver Enable and Disable Times
1.5V
2.3V
2.3V
tZH(SHDN),tZH
tZL(SHDN),tZL
1.5V
tLZ
0.5V
0.5V
tHZ
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
5V
0V
DE
5V
VOL
VOH
0V
A, B
A, B
178591 F06
f = 125kHz, tr ≤ 10ns, tf ≤ 10ns
Figure 7. Receiver Propagation Delays
1.5V
tPHL
RO
–VOD2
A – B
0V
0V
1.5V
tPLH
OUTPUT
INPUT
VOD2
VOL
VOH
178591 F07
f = 125kHz, tr ≤ 10ns, tf ≤ 10ns
Figure 8. Receiver Enable and Disable Times
1.5V
tZL(SHDN), tZL
tZH(SHDN), tZH
1.5V
1.5V
1.5V
tLZ
0.5V
0.5V
tHZ
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
5V
0V
RE
5V
0V
RO
RO
178591 F08
f = 125kHz, tr ≤ 10ns, tf ≤ 10ns



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