SP3495E 查看數據表（PDF） - Exar Corporation
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SP3495E Datasheet PDF : 17 Pages
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SP3495E-3497E
REV. 1.0.0
HIGH SPEED +3.3V RS-485/RS-422 TRANSCEIVERS WITH +/-15KV ESD PROTECTION AND ADVANCED FAILSAFE
FIGURE 6. DRIVER PROPAGATION DELAY TEST CIRCUIT
Y
DI D
VOD
Z
3.3V
RL
CL
54Ω 50pF
FIGURE 7. DRIVER PROPAGATION DELAY TIMING DIAGRAM
Vcc
DI
0V
Z
Y
VDIFF
VY – VZ
VO+
0V
VO–
Vcc/2
VO 1/2VO
tPLH
tPHL
Vcc/2
1/2VO
tDPLH
90%
10%
tR
tDPHL
t SKEW = |t DPLH - tDPHL|
90%
10%
tF
FIGURE 8. DRIVER ENABLE AND DISABLE TIME TEST CIRCUIT 1
0 or Vcc DI
Y
D
Z
S1
CL = 50pF
GENERATOR
50Ω
OUT
RL = 500Ω
9
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