LTC1481IS8 查看數據表（PDF） - Linear Technology
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LTC1481IS8 Datasheet PDF : 8 Pages
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TEST CIRCUITS
A
R
VOD
R
B
LTC1481 • F01
VOC
Figure 1. Driver DC Test Load
3V
DE
A
DI
B
RDIFF
A
CL1
RO
B
CL2
RE
15pF
LTC1481 • F03
Figure 3. Driver/Receiver Timing Test Circuit
UW
W
SWITCHI G TI E WAVEFOR S
LTC1481
RECEIVER
OUTPUT
TEST POINT
S1
CRL
1k S2
1k
VCC
LTC1481 • F02
Figure 2. Receiver Timing Test Load
OUTPUT
UNDER TEST
500Ω
CL
S1
VCC
S2
LTC1481 • F04
Figure 4. Driver Timing Test Load
3V
DI
0V
B
A
VO
0V
– VO
1.5V
f = 1MHz, tr ≤ 10ns, tf ≤ 10ns
t PLH
VO
1/2 VO
10%
tr
tSKEW
90%
VDIFF = V(A) – V(B)
1.5V
t PHL
1/2 VO
t SKEW
90%
10%
tf
Figure 5. Driver Propagation Delays
LTC1481 • F05
3V
DE
0V
5V
A, B
VOL
VOH
A, B
0V
1.5V
f = 1MHz, tr ≤ 10ns, tf ≤ 10ns
tZL(SHDN), tZL
t LZ
2.3V
OUTPUT NORMALLY LOW
1.5V
0.5V
2.3V
OUTPUT NORMALLY HIGH
0.5V
tZH(SHDN), tZH
t HZ
Figure 6. Driver Enable and Disable Times
LTC1481 • F06
5
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