SP1486E Datasheet, PDF (10/15 Pages) Sipex Corporation – +5V, 20Mbps PROFIBUS RS485/RS422 Transceivers Advanced Failsafe, 1/8th Unit Load, ±15kV ESD-Protected

DESCRIPTION
Driver Enable and Disable Times Test Circuit and Timing Diagram
0 or Vcc ^DI
Y S1
D
Z
C_L = 50pF
Vcc
R_L = 500Ω
OUT
GENERATOR
50Ω
DE
Vcc OUT
V_OL
t_DZL, t_DZL(SHDN)
V_OM = (V_OL + Vcc)/2
Vcc/2
t _DLZ
Vcc
0
0.25V
Receiver Propagation Delay Test Circuit and Timing Diagram
A
VID _{B R}
RE
OUT
C_L
15pF
A
B
t_RPLH
1.5V
OUT
+1V
-1V
t_RPHL
V_OH
V_OL
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
10
SP1486E_100_061009