SP3070-3078E Datasheet, PDF (10/19 Pages) Sipex Corporation – 15kV ESD-Protected, 3.3V, 1/8 Load, Failsafe RS-485/RS422 Transceivers

FIGURE 5. DRIVER ENABLE & DISABLE TIMES TEST CIRCUIT & TIMING DIAGRAM
Y S1
0 or VCC ^DI D
Z
GENERATOR
50Ω
VCC
RL = 500Ω
OUT
CL = 50pF
DE
V_CC OUT
V_OL
t_ZL, t_ZL(SHDN
V_OM = (V_OL+ V_CC)/2
V_CC
V_CC /2
0
t_LZ
0.25V
FIGURE 6. RECEIVER PROPAGATION DELAY TEST CIRCUIT & TIMING DIAGRAM
A
VID _B
R
RE
OUT
CL
15pF
A
B
OUT
t_PHL
1.5V
+1V
t_PLH
-1V
V_OH
V_OL
Date: 03/28/05
SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers
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