1KΩ
Test Point
Receiver
Output
V
CC
V
CC
S
S
1
2
S
S
1
2
500Ω
Output
Under
Test
C
RL
1KΩ
C
L
Figure 16. Driver Timing Test Load #2 Circuit
Figure 17. Receiver Timing Test Load Circuit
V
CC
CL1
A
B
A
B
T
IN
ROUT
CL2
15pF
Figure 18. Driver/Receiver Timing Test Circuit
SWITCHING WAVEFORMS...
f = 1MHz; t ≤ 10ns; t ≤ 10ns
R
F
+3V
1.5V
1.5V
DRIVER INPUT
0V
t
t
PHL
PLH
A
1/2V
1/2V
O
O
DRIVER
OUTPUT
V
O
B
t
t
DPHL
DPLH
+
V
V
DIFFERENTIAL
OUTPUT
O
0V
–
V
– V
O
A
B
t
t
R
F
t
= |t
- t
|
SKEW
DPLH DPHL
Figure 19. Driver Propagation Delays
f = 1MHz; t < 10ns; t < 10ns
R
F
+3V
ENABLE
0V
1.5V
1.5V
t
t
LZ
ZL
5V
A, B
2.3V
Output normally LOW
Output normally HIGH
0.5V
0.5V
V
OL
V
OH
A, B
2.3V
0V
t
t
HZ
ZH
Figure 20. Driver Enable and Disable Times
SP322DS/06
Rev. 7/9/03
SP322 V.11/V.35 Serial Transceiver
SP322 V.11/V.35 Serial Transceiver
© Copyright 1997 Sipex Corporation
© Copyright 2003 Sipex Corporation
7
SIPEX [ SIPEX CORPORATION ]
