3
SP495
Quad Differential RS-485 Transceiver
Copyright 2000 Sipex Corporation
A
B
R
R
V
OD
V
OC
1k
1k
C
RL
Receiver
Output
S
1
S
2
Test Point
V
CC
Figure 1. Driver DC Test Load Circuit
Figure 2. Receiver Timing Test Load Circuit
Operating Temperature
Commercial (_C_)
Industrial (_E_)
Storage Temperature
Package
Plastic LCC (_L)
0
+70
+85
+150
°
C
°
C
°
C
-40
-65
SPECIFICATIONS
(continued)
T
MIN
to T
MAX
and V
CC
= 5V
±
5% unless otherwise noted.
PARAMETERS
RECEIVER
DC Characteristics
MIN.
TYP.
MAX.
UNITS
CONDITIONS
Output Voltage LOW
Three State (high impedance)
Output Current
Input Resistance
Input Current (A, B); V
IN
= 12V
Input Current (A, B); V
IN
= -7V
Short-Circuit Current
RECEIVER
AC Characteristics
Maximum Data Rate
Receiver Input to Output
0.4
Volts
I
O
= +4mA, V
ID
= -200mV
±
0.5
15
10
μ
A
k
mA
mA
mA
0.4V
≤
V
O
≤
2.4V; DEx/ REx = 5V
-7V
≤
V
≤
12V
DE = 0V, V
CC
= 0V or 5.25V, V
IN
= 12V
DE = 0V, V
CC
= 0V or 5.25V, V
IN
= -7V
0V
≤
V
O
≤
V
CC
12
±
1.0
-0.8
85
10
Mbps
ns
DEx/ REx = 0V
t
PLH
; R
DIFF
= 54
,
C
L1
= C
L2
t
PHL
; R
DIFF
= 54
,
C
L1
= C
R
= 54
; C
L1
= C
L2
= 100pF;
Figures 3 & 8
C
RL
= 15pF; Figures 2 and 9; S
1
closed
C
RL
= 15pF; Figures 2 and 9; S
2
closed
C
RL
= 15pF; Figures 2 and 9; S
1
closed
C
RL
= 15pF; Figures 2 and 9; S
2
closed
60
200
=
100pF;
Figures 3 & 8
Receiver Input to Output
60
200
ns
=
100pF;
Figures 3 & 8
Diff. Receiver Skew It
PLH
-t
PHL
I
13
ns
Receiver Enable to Output LOW
Receiver Enable to Output HIGH
Receiver Disable from LOW
Receiver Disable from HIGH
POWER REQUIREMENTS
Supply Voltage
Supply Current
ENVIRONMENTAL AND
MECHANICAL
45
45
45
45
70
70
70
70
ns
ns
ns
ns
+4.75
+5.25
5
Volts
mA
2
DEx/ REx, DRx = 0V or V
CC
C
L1
15pF
RO
A
B
A
B
DI
DE
3V
C
L2
R
DIFF
500
C
L
Output
Under
Test
S
1
S
2
V
CC
Figure 3. Driver/Receiver Timing Test Circuit
Figure 4. Driver Timing Test Load #2 Circuit