SP334 Datasheet, PDF (5/12 Pages) Sipex Corporation – Programmable RS-232/RS-485 Transceiver

SWITCHING WAVEFORMS
+3V
DRIVER INPUT
0V
B
DRIVER
OUTPUT _A
DIFFERENTIAL ^VO⁺
OUTPUT 0V
V_A – V_B ^VO^–
t_SKEW = |t_DPLH - t_DPHL|
f ≥ 1MHz; t_R ≤ 10ns; t_F ≤ 10ns
1.5V
1.5V
t_PLH
t_PHL
V_O ^1/2VO
t_DPLH
t_DPHL
t_R
Figure 5. Driver Propagation Delays
1/2V_O
t_F
+3V
T_xEN 0V
5V
A, B
V_OL
V_OH
A, B
0V
f = 1MHz; t_R ≤ 10ns; t_F ≤ 10ns
1.5V
t_ZL
2.3V _{Output normally LOW}
2.3V
t_ZH
Output normally HIGH
1.5V
t_LZ
0.5V
0.5V
t_HZ
Figure 6. Driver Enable and Disable Times
V_0D2⁺
A–B
V_0D2^–
V_OH
RECEIVER OUT
V_OL
t_PHL
f = 1MHz; t_R ≤ 10ns; t_F ≤ 10ns
0V
INPUT
1.5V
OUTPUT
t_PLH
0V
1.5V
Figure 7. Receiver Propagation Delays
SP334DS/10
Programmable RS-232/RS-485 Transceiver
5
© Copyright 2000 Sipex Corporation