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

Test Circuits
Y
DI _D
VOD
Z
3.3V
R_L
C_L
54Ω 50pF
Driver Propagation Delay Time Test Circuit and Timing Diagram
Vcc
DI
0V
Z
Y
V_DIFF
V_Y – V_Z
V_O⁺
0V
V_O^–
Vcc/2
V_O ^1/2VO
t_PLH
t_PHL
Vcc/2
1/2V_O
t_DPLH
90%
10%
t_R
t_DPHL
t _SKEW = |t _DPLH - t_DPHL|
90%
10%
t_F
Driver Short Circuit Current Limit Test Circuit
DE = 0 or Vcc
A/Y
DI = 0 or Vcc
D
B/Z
IOS D
100Ω
-7V to +12V V
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
15
SP3080E-SP3088E_100_062309