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LTC1487CS8 Scheda tecnica(PDF) 6 Page - Linear Technology

Il numero della parte LTC1487CS8
Spiegazioni elettronici  Ultra-Low Power RS485 with Low EMI, Shutdown and High Input Impedance
PDF  8 Pages
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Produttore elettronici  LINER [Linear Technology]
Homepage  http://www.linear.com
Logo LINER - Linear Technology

LTC1487CS8 Scheda tecnica(HTML) 6 Page - Linear Technology

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LTC1487
Figure 5. Driver Propagation Delays
Figure 6. Driver Enable and Disable Times
DI
3V
1.5V
tPLH
tr
tSKEW
1/2 VO
VO
f = 1MHz, 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)
LTC1487 • F05
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
3V
0V
DE
5V
VOL
VOH
0V
A, B
A, B
LTC1487 • F06
f = 1MHz, tr ≤ 10ns, tf ≤ 10ns
SWITCHI G TI E WAVEFOR S
Figure 7. Receiver Propagation Delays
1.5V
tPHL
RO
–VOD2
A – B
0V
0V
1.5V
tPLH
OUTPUT
INPUT
VOD2
VOL
VOH
LTC1487 • F07
f = 1MHz, 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
3V
0V
RE
5V
0V
RO
RO
LTC1487 • F08
f = 1MHz, tr ≤ 10ns, tf ≤ 10ns



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