SP481_04 Datasheet, PDF (7/10 Pages) Sipex Corporation – Low Power Half-Duplex RS-485 Transceivers

+3V
DE
0V
5V
A, B
V_OL
V_OH
A, B
0V
f_SP481/485 = 1MHz; f_SP483 = 100kHz; t_R < 10ns; t_F < 10ns
1.5V
t_ZL
2.3V _{Output normally LOW}
1.5V
t_LZ
0.5V
2.3V ^{Output normally HIGH}
t_ZH
0.5V
t_HZ
Figure 7. Driver Enable and Disable Times
V_0D2⁺
A–B
V_0D2^–
0V
INPUT
0V
V_OH
R
V_OL
t_PHL
1.5V
OUTPUT
t_PLH
1.5V
f_SP481/485 = 1MHz; f_SP483 = 100kHz; t_R < 10ns; t_F < 10ns
t_{SKEW = |} t_{PHL -} t_{PLH |}
Figure 8. Receiver Propagation Delays
+3V
RE
0V
5V
R
V_IL
V_IH
R
0V
f_SP481/485 = 1MHz; f_SP483 = 100kHz; t_R < 10ns; t_F < 10ns
1.5V
t_ZL
1.5V _{Output normally LOW}
1.5V
t_LZ
0.5V
1.5V ^{Output normally HIGH}
t_ZH
0.5V
t_HZ
Figure 9. Receiver Enable and Disable Times
Rev. 07/28/04
SP481/483/485 Low Power Half-Duplex RS485 Transceivers
7
© Copyright 2002 Sipex Corporation