LTC1484C Просмотр технического описания (PDF) - Linear Technology
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LTC1484C Datasheet PDF : 16 Pages
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LTC1484
UW
W
SWITCHI G TI E WAVEFOR S
3V
DI
0V
VO
– VO
B
A
1.5V
t PLH
90%
10%
50%
tr
VO
1/2 VO
tSKEW
NOTE: DE = 1
f = 1MHz, tr ≤ 10ns, tf ≤ 10ns
VO = V(A) – V(B)
Figure 6. Driver Propagation Delays
1.5V
t PHL
50%
tf
90%
10%
t SKEW
1484 F06
3V
DE
0V
5V
A, B
VOL
1.5V
tZL(SHDN), tZL
2.3V
f = 1MHz, tr ≤ 10ns, tf ≤ 10ns
OUTPUT NORMALLY LOW
VOH
A, B
0V
2.3V
tZH(SHDN), tZH
OUTPUT NORMALLY HIGH
NOTE: A, B ARE THREE-STATED WHEN DE = 0, 1kΩ PULL-UP OR 1kΩ PULL-DOWN
Figure 7. Driver Enable and Disable Timing
VOD2
A–B
0V
– VOD2
t PHL
5V
RO
1.5V
VOL
NOTE: tSKD = |tPHL – tPLH|, RE = 0
INPUT
f = 1MHz, tr ≤ 10ns, tf ≤ 10ns
OUTPUT
Figure 8. Receiver Propagation Delays
1.5V
t LZ
0.5V
0.5V
t HZ
1484 F07
t PLH
0V
1.5V
1484 F08
RE
1.5V
f = 1MHz, tr ≤ 10ns, tf ≤ 10ns
5V
RO
0V
tZL(SHDN), tZL
1.5V
OUTPUT NORMALLY LOW
5V
RO
0V
1.5V
tZH(SHDN), tZH
OUTPUT NORMALLY HIGH
NOTE: DE = 0, RO IS THREE-STATED IN SHUTDOWN, 1kΩ PULL-UP FOR NORMALLY LOW OUTPUT,
1kΩ PULL-DOWN FOR NORMALLY HIGH OUTPUT
Figure 9. Receiver Enable and Shutdown Timing
1.5V
t LZ
0.5V
0.5V
t HZ
1484 F09
10
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