![](http://datasheet.mmic.net.cn/Exar-Corporation/SP526CF-L_datasheet_99756/SP526CF-L_12.png)
12
Rev: C Date:2/1/06
SP526 Multi–Mode Serial Transceiver
Copyright 2006 Sipex Corporation
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Figure 22. Driver Timing Test Load Circuit
Figure 23. Receiver Timing Test Load Circuit
500
CL
Output
Under
Test
S1
S2
VCC
1K
CRL
Receiver
Ou tpu t
S1
S2
Test Point
VCC
Figure 24. Driver Propagation Delays
+3V
0V
DRIVER INPUT
B
A
DRIVER
OUTPUT
VO+
DIFFERENTIAL
OUTPUT
VA – VB
0V
VO–
1.5V
tPLH
tR
tF
f = 1MHz; tR ≤ 10ns; tF ≤ 10ns
VO 1/2VO
1/2VO
tPHL
tSKEW = |tDPLH - tDPHL|
tDPHL
tDPLH
Figure 25. V.11 Driver Enable and Disable Times
+3V
0V
DECX or Tx_Enable
5V
VOL
A, B
0V
1.5V
tZL
tZH
f= 1MHz; tR < 10ns; tF <10ns
VOH
A, B
2.3V
tLZ
tHZ
0.5V
Output normally LOW
Output normally HIGH
Figure 21. Driver/Receiver Timing Test Circuit
CL1
15pF
RO
A
B
A
B
DI
CL2
RL
D
X or TX_Enable