SP3080E Datasheet, PDF (17/25 Pages) Sipex Corporation – Advanced-Failsafe RS-485/RS-422 Transceiver 1/8th Unit Load, Slew-Limited, ±15kV ESD-Protected

Test Circuits
Driver Enable and Disable Times Test Circuit and Timing Diagram
Vcc
0 or Vcc ^DI
Y
D
Z
S1
C_L = 50pF
R_L = 500Ω
OUT
GENERATOR
50Ω
DE
t_ZL, t_ZL(SHDN)
Vcc/2
t_LZ
Vcc OUT
V_OL
V_OM = (V_OL + Vcc)/2
Receiver Propagation Delay Test Circuit and Timing Diagram
Vcc
0
0.25V
A
VID _{B R}
RE
OUT
C_L
15pF
A
B
OUT
1.5V
t_PHL
+1V
t_PLH
-1V
V_OH
V_OL
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
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SP3080E-SP3088E_100_062309