SP487 SIPEX [Sipex Corporation], SP487 Datasheet - Page 5

• Manufacturer Part Number: SP487
• Description: Quad RS-485/RS-422 Line Drivers
• Manufacturer: SIPEX [Sipex Corporation]

Figure 4. Driver Propagation Delays
AC PARAMETERS
V
SP486/487
CC
= 5V 5%; typicals at 25 C; 0 C
PARAMETER
PROPAGATION DELAY
Driver Input to Output
Driver Output to Output (t
Driver Rise Time (t
Driver Fall Time (t
DRIVER ENABLE
DRIVER DISABLE
From Output Low
From Output High
Low to High (t
High to Low (t
SP486
SP487
SP486
SP487
To Output High
To Output Low
DI
–V
V
3V
0V
B
A
O
O
PLH
PHL
F
V
R
)
)
)
)
O
t
T
SKEW
PLH
A
+70 C unless otherwise noted.
)
1
2
V
MIN.
20
20
O
F = 1MHZ: t
t
r
10%
1.5V
t
SKEW
90%
TYP.
Quad RS-485/RS-422 Line Drivers
40
40
20
20
20
20
60
60
60
60
V
5
DIFF
MAX.
= V(A) – V(B)
r
5
110
115
130
130
60
60
15
< 10ns: t
t
f
PHL
UNIT
< 10ns
90%
1
2
10%
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
O
t
f
R
100pF; Figure 2
10% to 90%
90% to 10%
C
(S
C
(S
C
(S
C
(S
t
L
L
L
L
SKEW
DIFF
1.5V
2
1
1
2
© Copyright 2000 Sipex Corporation
= 100pF; Figures 3 and 5
= 100pF; Figures 3 and 5
= 15pF; Figures 3 and 5
= 15pF; Figures 3 and 5
closed)
closed)
closed)
closed)
CONDITIONS
= 54 Ohms, C
L1
= C
L2
=