SP486E Datasheet, PDF (5/11 Pages) Sipex Corporation – Enhanced Quad RS-485/RS-422 Line Drivers

3V
DI
0V
F = 1MHZ: t_r < 10ns: t_f < 10ns
1.5V
1.5V
t_PLH
t_PHL
B
A
V_O
21^VO
V_O
–V_O
Figure 4. Driver Propagation Delays
21^VO
V_DIFF = V(A) – V(B)
90%
90%
10%
10%
t_r
t_f
AC PARAMETERS
V_CC = 5V±5%; typicals at 25°C; T_AMB = 25°C unless otherwise noted.
PARAMETER
MIN. TYP.
PROPAGATION DELAY
Driver Input to Output
Low to High (t_PLH)
High to Low (t_PHL)
Differential Skew (t_SKEW)
Driver Rise Time (t_R)
SP486E
SP487E
Driver Fall Time (t_F)
SP486E
SP487E
DRIVER ENABLE
To Output High
20
40
20
40
5
20
20
20
20
60
To Output Low
60
MAX.
60
60
15
110
115
DRIVER DISABLE
From Output Low
From Output High
60
130
60
130
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
CONDITIONS
R_DIFF = 54 Ohms, C_L1= C_L2=
100pF; Figure 2
t_SKEW = t_PLH - t_PHL
10% to 90%
90% to 10%
C_L = 100pF; Figures 3 and 5
(S₂ closed)
C_L = 100pF; Figures 3 and 5
(S₁ closed)
C_L = 15pF; Figures 3 and 5
(S₁ closed)
C_L = 15pF; Figures 3 and 5
(S₂ closed)
SP486E/487EDS/06
SP486E/487E Enhanced Quad RS-485/RS-422 Line Drivers
5
© Copyright 2000 Sipex Corporation