SP491 SIPEX [Sipex Corporation], SP491 Datasheet - Page 5

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

ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of the device at
these ratings or any other above those indicated in the operation sections
of the specifications below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect reliability.
V
Input Voltages
Output Voltages
Storage Temperature......................................................-65˚C to +150
Power Dissipation.....................................................................1000mW
T
Date: 05/10/04
CC
MIN
............................................................................................................................+7V
PARAMETERS
SP491 DRIVER
DC Characteristics
Differential Output Voltage
Differential Output Voltage
Differential Output Voltage
Change in Magnitude of Driver
Differential Output Voltage for
Complimentary States
Driver Common-Mode
Output Voltage
Input High Voltage
Input Low Voltage
Input Current
Driver Short-Circuit Current
SP491 DRIVER
AC Characteristics
Maximum Data Rate
Driver Input to Output
Driver Input to Output
Driver Skew
Driver Rise or Fall Time
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
to T
V
V
MAX
OUT
OUT
and V
Logic...................................................-0.5V to (V
Drivers................................................-0.5V to (V
Receivers..................................................................±14V
Logic...................................................-0.5V to (V
Drivers......................................................................±14V
Receivers...........................................-0.5V to (V
= HIGH
= LOW
CC
= 5V ± 5% unless otherwise noted.
GND
MIN.
1.5
2.0
35
35
20
20
2
5
3
SP490/491 Full Duplex RS-485 Transceivers
TYP.
CC
CC
30
30
15
40
40
40
40
CC
CC
5
+0.5V)
+0.5V)
+0.5V)
+0.5V)
MAX.
5
V
V
V
250
250
±10
0.2
0.8
60
60
10
40
70
70
70
70
3
CC
CC
CC
UNITS
Volts
Volts
Volts
Volts
Volts
Volts
Volts
µA
mA
mA
Mbps
ns
ns
ns
ns
ns
ns
ns
ns
ELECTRICAL CHARACTERISTICS
CONDITIONS
Unloaded; R = ∞ ; see figure 1
With Load; R = 50Ω; (RS422);
see figure 1
With Load; R = 27Ω; (RS485); see figure 1
R = 27Ω or R = 50Ω; see figure 1
R = 27Ω or R = 50Ω; see figure 1
Applies to D, REB, DE
Applies to D, REB, DE
Applies to D, REB, DE
-7V ≤ V
-7V ≤ V
REB = 5V, DE = 5V
t
see figures 3 and 6
t
see figures 3 and 6
see figures 3 and 6,
t
From 10% to 90%; R
C
C
4 and 7; S
C
4 and 7; S
C
4 and 7; S
C
4 and 7; S
PLH
PHL
SKEW
L1
L1
L1
L1
L1
; R
; R
= C
= C
= C
= C
= C
= | t
DIFF
DIFF
O
O
L2
L2
L2
L2
L2
≤ 12V
≤ 12V
DPLH
= 54Ω, C
= 54Ω, C
= 100pF; see figures 3 and 6
= 100pF; see figures
= 100pF; see figures
= 100pF; see figures
= 100pF; see figures
2
1
1
2
closed
closed
closed
closed
© Copyright 2004 Sipex Corporation
- t
DPHL
L1
L1
= C
= C
DIFF
|
L2
L2
= 54Ω,
= 100pF;
= 100pF;