SP3070E Datasheet, PDF (9/20 Pages) Exar Corporation – ±15kV ESD-Protected, 3.3V, 1/8 Load, Failsafe RS-485/RS422 Transceivers

figure 4. driver enable & disable times test circuit & timing diagram
0 or VCC ^DI
Y
D
Z
S1
CL = 50pF
GENERATOR
50Ω
OUT
RL = 500Ω
DE
OUT
t_ZL, t_ZL(SHDN
V_OM = (V_OL+ V_CC)/2
V_CC
V_CC /2
0
0.25V
t_LZ
0
figure 4A. driver CONTENTION TEST
DE = 0 or 3V
A/Y
DI = 0 or 3V
D
B/Z
IOSD
100Ω
-7V to +12V V
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
9
SP3070E-SP3078E_100_061109