SP491 SIPEX [Sipex Corporation], SP491 Datasheet - Page 3

• Manufacturer Part Number: SP491
• Description: Full Duplex RS-485 Transceivers
• Manufacturer: SIPEX [Sipex Corporation]

T
Figure 1. Driver DC Test Load Circuit
Figure 3. Driver/Receiver Timing Test Circuit
Date: 05/10/04
MIN
to T
PARAMETERS
SP490 RECEIVER
AC Characteristics
Maximum Data Rate
Receiver Input to Output
Receiver Input to Output
Diff. Receiver Skew It
POWER REQUIREMENTS
Supply Voltage
Supply Current
ENVIRONMENTAL AND
MECHANICAL
Operating Temperature
Storage Temperature
Package
DI
DE
Commercial (_C_)
Industrial (_E_)
Plastic DIP (_S_)
NSOIC (_N)
3V
MAX
and V
A
B
CC
= 5V ± 5% unless otherwise noted.
A
B
R
V
DIFF
OD
C
C
L1
L2
R
R
PLH
V
-t
OC
PHL
I
A
B
+4.75
MIN.
-40
-65
5
0
SP490/491 Full Duplex RS-485 Transceivers
RO
TYP.
900
90
90
13
15pF
MAX.
+5.25
+150
3
150
150
+70
+85
Figure 4. Driver Timing Test Load #2 Circuit
Figure 2. Receiver Timing Test Load Circuit
UNITS
Mbps
ns
ns
ns
Volts
µA
°C
°C
°C
Output
Under
Receiver
Test
ELECTRICAL CHARACTERISTICS
Output
CONDITIONS
t
C
t
C
R
Figures 3 & 8
C
PLH
PHL
C
L1
L1
DIFF
L
RL
; R
; R
= C
= C
= 54Ω; C
Test Point
DIFF
DIFF
L2
L2
500
= 100pF;
=
= 54Ω,
= 54Ω,
100pF;
1K
© Copyright 2004 Sipex Corporation
L1
= C
Figures 3 & 8
S
S
Figures 3 & 8
1
2
L2
S
S
1
2
= 100pF;
1K
V
CC
V
CC