SIPEX SP490ES

®
SP490/SP491
Full Duplex RS-485 Transceivers
■
■
■
■
■
+5V Only
Low Power BiCMOS
Driver/Receiver Enable (SP491)
RS-485 and RS-422 Drivers/Receivers
Pin Compatible with LTC490 and
SN75179 (SP490)
■ Pin Compatible with LTC491 and
SN75180 (SP491)
DESCRIPTION
The SP490 is a low power differential line driver/receiver meeting RS-485 and RS-422
standards up to 5Mbps. The SP491 is identical to the SP490 with the addition of driver and
receiver tri-state enable lines. Both products feature ±200mV receiver input sensitivity, over
wide common mode range. The SP490 is available in 8-pin plastic DIP and 8-pin NSOIC
packages for operation over the commercial and industrial temperature ranges. The SP491
is available in 14-pin DIP and 14-pin NSOIC packages for operation over the commercial and
industrial temperature ranges.
BLOCK DIAGRAMS
14 Vcc
13 NC
12 A
NC 1
R 2
Vcc 1
R
8 A
R 2
R
11 B
REB 3
7 B
DE 4
6 Z
D 3
D
GND 4
10 Z
D 5
5 Y
9 Y
GND 6
GND 7
SP490
Date: 05/10/04
D
8 NC
SP491
SP490/491 Full Duplex RS-485 Transceivers
1
© Copyright 2004 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.
VCC....................................................................................................+7V
Input Voltages
Drivers................................................-0.5V to (VCC+0.5V)
Receivers..................................................................±14V
Output Voltages
Drivers......................................................................±14V
Receivers...........................................-0.5V to (VCC+0.5V)
Storage Temperature....................................................-65˚C to +150˚
Power Dissipation.....................................................................1000mW
ELECTRICAL CHARACTERISTICS
TMIN to TMAX and VCC = 5V ± 5% unless otherwise noted.
PARAMETERS
SP490 DRIVER
DC Characteristics
Differential Output Voltage
Differential Output Voltage
MIN.
TYP.
MAX.
UNITS
CONDITIONS
GND
2
VCC
VCC
Volts
Volts
1.5
VCC
Volts
Unloaded; R = ∞ ; see figure 1
With Load; R = 50Ω; (RS422);
see figure 1
With Load; R = 27Ω; (RS485); see figure 1
0.2
Volts
R = 27Ω or R = 50Ω; see figure 1
3
0.8
±10
Volts
Volts
Volts
µA
R = 27Ω or R = 50Ω; see figure 1
Applies to D
Applies to D
Applies to D
250
250
mA
mA
-7V ≤ VO ≤ +12V
-7V ≤ VO ≤ +12V
30
60
Mbps
ns
Driver Input to Output
30
60
ns
Driver Skew
5
Driver Rise or Fall Time
15
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
VOUT = HIGH
VOUT = LOW
SP490 DRIVER
AC Characteristics
Maximum Data Rate
Driver Input to Output
SP490 RECEIVER
DC Characteristics
Differential Input Threshold
Input Hysteresis
Output Voltage High
Output Voltage Low
Input Resistance
Input Current (A, B); VIN = 12V
Input Current (A, B); VIN = -7V
Short-Circuit Current
Date: 05/10/04
2.0
35
35
5
0.2
ns
40
+0.2
70
3.5
0.4
12
15
±1.0
-0.8
85
ns
Volts
mV
Volts
Volts
kΩ
mA
mA
mA
tPLH; RDIFF = 54Ω, CL1 = CL2 = 100pF;
see figures 3 and 6
tPHL; RDIFF = 54Ω, CL1 = CL2 = 100pF;
see figures 3 and 6
see figures 3 and 6,
tSKEW = | tDPLH - tDPHL |
From 10% to 90%; RDIFF = 54Ω,
CL1 = CL2 = 100pF; see figures 3 and 6
-7V ≤ VCM ≤ 12V
VCM = 0V
IO = -4mA, VID = +200mV
IO = +4mA, VID = -200mV
-7V ≤ VCM ≤ 12V
VIN = 12V
VIN = -7V
0V ≤ VO ≤ VCC
SP490/491 Full Duplex RS-485 Transceivers
2
© Copyright 2004 Sipex Corporation
ELECTRICAL CHARACTERISTICS
TMIN to TMAX and VCC = 5V ± 5% unless otherwise noted.
PARAMETERS
SP490 RECEIVER
AC Characteristics
Maximum Data Rate
Receiver Input to Output
MIN.
TYP.
MAX.
UNITS
90
150
Mbps
ns
Receiver Input to Output
90
150
ns
Diff. Receiver Skew ItPLH-tPHLI
13
5
ns
CONDITIONS
tPLH; RDIFF = 54Ω,
CL1 = CL2 = 100pF; Figures 3 & 8
tPHL; RDIFF = 54Ω,
CL1 = CL2 = 100pF; Figures 3 & 8
RDIFF = 54Ω; CL1 = CL2 = 100pF;
Figures 3 & 8
POWER REQUIREMENTS
Supply Voltage
Supply Current
ENVIRONMENTAL AND
MECHANICAL
Operating Temperature
Commercial (_C_)
Industrial (_E_)
Storage Temperature
Package
Plastic DIP (_S_)
NSOIC (_N)
+4.75
+5.25
Volts
µA
+70
+85
+150
°C
°C
°C
900
0
-40
-65
A
VOD
VCC
S1
CRL
R
1K
Test Point
Receiver
Output
R
1K
VOC
S2
B
Figure 1. Driver DC Test Load Circuit
Figure 2. Receiver Timing Test Load Circuit
3V
DE
DI
CL1
A
A
RDIFF
Output
Under
Test
RO
B
B
CL2
15pF
500
S1
VCC
CL
S2
Figure 3. Driver/Receiver Timing Test Circuit
Date: 05/10/04
Figure 4. Driver Timing Test Load #2 Circuit
SP490/491 Full Duplex RS-485 Transceivers
3
© Copyright 2004 Sipex Corporation
f = 1MHz; tR < 10ns; tF < 10ns
+3V
1.5V
DI
1.5V
0V
B
DRIVER
OUTPUT
tPLH
tPHL
VO 1/2VO
1/2VO
A
tDPLH
DIFFERENTIAL VO+
OUTPUT 0V
V A – V B V O–
tDPHL
tR
tF
tSKEW = | tDPLH - tDPHL |
Figure 6. Driver Propagation Delays
f = 1MHz; tR < 10ns; tF < 10ns
+3V
1.5V
DE
1.5V
0V
tZL
tLZ
5V
2.3V
A, B
VOL
VOH
A, B
2.3V
0V
Output normally LOW
0.5V
Output normally HIGH
0.5V
tZH
tHZ
Figure 7. Driver Enable and Disable Times
V0D2+
A–B
0V
INPUT
V0D2–
VOH
1.5V
R
VOL
tPHL
OUTPUT
0V
1.5V
tPLH
f = 1MHz; tR < 10ns; tF < 10ns
tSKEW = | tPHL - tPLH |
Figure 8. Receiver Propagation Delays
Date: 05/10/04
SP490/491 Full Duplex RS-485 Transceivers
4
© Copyright 2004 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.
VCC............................................................................................................................+7V
Input Voltages
Logic...................................................-0.5V to (VCC+0.5V)
Drivers................................................-0.5V to (VCC+0.5V)
Receivers..................................................................±14V
Output Voltages
Logic...................................................-0.5V to (VCC+0.5V)
Drivers......................................................................±14V
Receivers...........................................-0.5V to (VCC+0.5V)
Storage Temperature......................................................-65˚C to +150
Power Dissipation.....................................................................1000mW
ELECTRICAL CHARACTERISTICS
TMIN to TMAX and VCC = 5V ± 5% unless otherwise noted.
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
VOUT = HIGH
VOUT = LOW
MIN.
TYP.
MAX.
UNITS
CONDITIONS
GND
2
VCC
VCC
Volts
Volts
1.5
VCC
Volts
Unloaded; R = ∞ ; see figure 1
With Load; R = 50Ω; (RS422);
see figure 1
With Load; R = 27Ω; (RS485); see figure 1
0.2
Volts
R = 27Ω or R = 50Ω; see figure 1
3
0.8
±10
Volts
Volts
Volts
µA
R = 27Ω or R = 50Ω; see figure 1
Applies to D, REB, DE
Applies to D, REB, DE
Applies to D, REB, DE
250
250
mA
mA
-7V ≤ VO ≤ 12V
-7V ≤ VO ≤ 12V
REB = 5V, DE = 5V
tPLH; RDIFF = 54Ω, CL1 = CL2 = 100pF;
see figures 3 and 6
tPHL; RDIFF = 54Ω, CL1 = CL2 = 100pF;
see figures 3 and 6
see figures 3 and 6,
tSKEW = | tDPLH - tDPHL |
From 10% to 90%; RDIFF = 54Ω,
CL1 = CL2 = 100pF; see figures 3 and 6
CL1 = CL2 = 100pF; see figures
4 and 7; S2 closed
CL1 = CL2 = 100pF; see figures
4 and 7; S1 closed
CL1 = CL2 = 100pF; see figures
4 and 7; S1 closed
CL1 = CL2 = 100pF; see figures
4 and 7; S2 closed
2.0
35
35
SP491 DRIVER
AC Characteristics
Maximum Data Rate
Driver Input to Output
5
20
30
60
Mbps
ns
Driver Input to Output
20
30
60
ns
5
10
ns
15
40
ns
Driver Enable to Output High
40
70
ns
Driver Enable to Output Low
40
70
ns
Driver Disable Time from Low
40
70
ns
Driver Disable Time from High
40
70
ns
Driver Skew
Driver Rise or Fall Time
Date: 05/10/04
3
SP490/491 Full Duplex RS-485 Transceivers
5
© Copyright 2004 Sipex Corporation
ELECTRICAL CHARACTERISTICS
TMIN to TMAX and VCC = 5V ± 5% unless otherwise noted.
PARAMETERS
MIN.
SP491 RECEIVER
DC Characteristics
Differential Input Threshold
-0.2
Input Hysteresis
Output Voltage High
3.5
Output Voltage Low
Three State (high impedance)
Output Current
Input Resistance
12
Input Current (A, B); VIN = 12V
Input Current (A, B); VIN = -7V
Short-Circuit Current
7
SP491 RECEIVER
DC Characteristics
Maximum Data Rate
5
Receiver Input to Output
60
Receiver Input to Output
TYP.
MAX.
UNITS
CONDITIONS
+0.2
Volts
mV
Volts
Volts
-7V ≤ VCM ≤ 12V
VCM = 0V
IO = -4mA, VID = +200mV
IO = +4mA, VID = -200mV
±1.0
-0.8
85
µA
kΩ
mA
mA
mA
0.4V ≤ VO ≤ 2.4V; REB = 5V
-7V ≤ VCM ≤ 12V
DE = 0V, VCC = 0V or 5.25V, VIN = 12V
DE = 0V, VCC = 0V or 5.25V, VIN = -7V
0V ≤ VO ≤ VCC
90
150
Mbps
ns
90
150
ns
ns
REB = 0V
tPLH; RDIFF = 54Ω,
CL1 = CL2 = 100pF; Figures 3 & 8
tPHL; RDIFF = 54Ω,
CL1 = CL2 = 100pF; Figures 3 & 8
RDIFF = 54Ω; CL1 = CL2 = 100pF;
ns
ns
ns
ns
CRL = 15pF; Figures 2 and 9; S1 closed
CRL = 15pF; Figures 2 and 9; S2 closed
CRL = 15pF; Figures 2 and 9; S1 closed
CRL = 15pF; Figures 2 and 9; S2 closed
Volts
µA
REB, D = 0V or VCC; DE = VCC
70
0.4
±1
15
60
Diff. Receiver Skew ItPLH-tPHLI
13
Receiver Enable to Output Low
Receiver Enable to Output High
Receiver Disable from Low
Receiver Disable from High
POWER REQUIREMENTS
Supply Voltage
+4.75
Supply Current
20
20
20
20
Figures 3 & 8
SP491 ENVIRONMENTAL
AND MECHANICAL
Operating Temperature
Commercial (_C_)
Industrial (_E_)
Storage Temperature
Package
Plastic DIP (_S_)
NSOIC (_N)
50
50
50
50
+5.25
600
0
-40
-65
+70
+85
+150
°C
°C
°C
+3V
RE
0V
1.5V f = 1MHz; t < 10ns; t < 10ns
R
F
tZL
1.5V
tLZ
5V
1.5V
R
VIL
Output normally LOW
0.5V
Output normally HIGH
0.5V
VIH
R
1.5V
0V
tZH
tHZ
Figure 9. Receiver Enable and Disable Times
Date: 05/10/04
SP490/491 Full Duplex RS-485 Transceivers
6
© Copyright 2004 Sipex Corporation
The driver of the SP491 has a driver enable
control line which is active high. A logic high
on DE (pin 4) of the SP491 will enable
the differential driver outputs. A logic low
on DE (pin 4) of the SP491 will tri-state the
driver outputs. The SP490 does not have a
driver enable.
DESCRIPTION
The SP490 and SP491 are full-duplex differential
transceivers that meet the requirements of
RS-485 and RS-422. Fabricated with a Sipex
proprietary BiCMOS process, both products
require a fraction of the power of older bipolar
designs.
Receiver...
The RS-485 standard is ideal for multi-drop
applications or for long-distance interfaces.
RS-485 allows up to 32 drivers and 32 receivers
to be connected to a data bus, making it an ideal
choice for multi-drop applications. Since the
cabling can be as long as 4,000 feet, RS-485
transceivers are equipped with a wide (-7V to
+12V) common mode range to accommodate
ground potential differences. Because RS-485
is a differential interface, data is virtually
immune to noise in the transmission line.
The receivers for both the SP490 and SP491
have differential inputs with an input sensitivity
as low as ±200mV. Input impedance of the
receivers is typically 15KΩ (12KΩ minimum).
A wide common mode range of -7V to +12V
allows for large ground potential differences
between systems. The receivers for both the
SP490 and SP491 are equipped with the
fail-safe feature. Fail-safe guarantees that
the receiver output will be in a high state when
the input is left unconnected.
Driver...
The receiver of the SP491 has a receiver
enable control line which is active low. A logic
low on REB (pin 3) of the SP491 will enable
the differential receiver. A logic high on REB
(pin 3) of the SP491 will tri-state the receiver.
The drivers for both the SP490 and SP491 have
differential outputs. The typical voltage output
swing with no load will be 0 volts to +5 volts.
With worst case loading of 54Ω across the
differential outputs, the driver can maintain
greater than 1.5V voltage levels.
Date: 05/10/04
SP490/491 Full Duplex RS-485 Transceivers
7
© Copyright 2004 Sipex Corporation
PACKAGE: 8 PIN NSOIC
D
e
E/2
E1
E
SEE VIEW C
E1/2
1
b
INDEX AREA
(D/2 X E1/2)
Ø1
TOP VIEW
L2
Seating Plane
Ø1
Gauge Plane
Ø
L
L1
VIEW C
A2
A
SEATING PLANE
A1
SIDE VIEW
8 Pin NSOIC
(JEDEC MS-012,
AA - VARIATION)
b
WITH PLATING
DIMENSIONS
Minimum/Maximum
(mm)
COMMON HEIGHT DIMENSION
SYMBOL
A
A1
A2
b
c
D
E
E1
e
L
L1
L2
Ø
Ø1
Date: 05/10/04
MIN NOM MAX
1.75
1.35
0.25
0.10 1.25
1.65
0.31
0.51
0.17
0.25
4.90 BSC
6.00 BSC
3.90 BSC
1.27 BSC
0.40 1.27
1.04 REF
0.25 BSC
0º
8º
5º
15º
c
BASE METAL
CONTACT AREA
8 PIN NSOIC
SP490/491 Full Duplex RS-485 Transceivers
8
© Copyright 2004 Sipex Corporation
PACKAGE: 8 PIN NSOIC
D
e
E/2
E1
E
E1/2
SEE VIEW C
1
B
INDEX AREA
(D/2 X E1/2)
b
Ø1
TOP VIEW
Gauge Plane
L2
Seating Plane
Ø1
Ø
L
L1
VIEW C
A2
A
A1
14 Pin NSOIC
(JEDEC MS-012,
AB - VARIATION)
SIDE VIEW
DIMENSIONS
Minimum/Maximum
(mm)
b
WITH PLATING
COMMON HEIGHT DIMENSION
SYMBOL
A
A1
A2
b
c
D
E
E1
e
L
L1
L2
Ø
Ø1
Date: 05/10/04
MIN NOM MAX
- 1.75
1.35
0.25
0.10 1.25
1.65
0.31
0.51
- 0.25
0.17
8.65 BSC
6.00 BSC
3.90 BSC
1.27 BSC
0.40
1.27
1.04 REF
0.25 BSC
0º
8º
5º
- 15º
c
BASE METAL
CONTACT AREA
14 PIN NSOIC
SP490/491 Full Duplex RS-485 Transceivers
9
© Copyright 2004 Sipex Corporation
PACKAGE: 8 PIN NSOIC
A1
D
A
N
A2
D1
b2
b
e
b3
INDEX
AREA
L
E1 E
1 2 3
8 PIN PDIP
JEDEC MS-001
(BA) Variation
A
N/2
Dimensions in inches
MIN
-
E
NOM MAX
-
.210
-
.195
A1
.015
A2
.115
.130
b
.014
.018
.022
b2
.045
.060
.070
b3
.030
.039
.045
c
.010
.014
eA
.365
.400
eB
c
.008
D
.355
D1
.005
-
-
E
.300
.310
.325
E1
.240
.250
.280
.100 BSC
e
eA
b
.300 BSC
eB
-
-
.430
L
.115
.130
.150
C
8 pin PDIP
Date: 05/10/04
SP490/491 Full Duplex RS-485 Transceivers
10
© Copyright 2004 Sipex Corporation
PACKAGE: 8 PIN NSOIC
A1
D
A
N
A2
D1
b3
L
b2
b
e
INDEX
AREA
E1 E
1 2 3
14 PIN PDIP
JEDEC MS-001
(AA) Variation
A
N/2
Dimensions in inches
MIN
-
E
NOM MAX
-
.210
A1
.015
-
-
A2
.115
.130
.195
b
.014
.018
.022
b2
.045
.060
.070
b3
.030
.039
.045
c
c
.008
.010
.014
eA
D
.735
.750
.775
eB
D1
.005
-
-
E
.300
.310
.325
E1
.240
.250
.280
.100 BSC
e
eA
b
.300 BSC
eB
-
-
.430
L
.115
.130
.150
C
14 pin PDIP
Date: 05/10/04
SP490/491 Full Duplex RS-485 Transceivers
11
© Copyright 2004 Sipex Corporation
ORDERING INFORMATION
Model
Temperature Range
Package
SP490CN. ..................................................................................... 0˚C to +70˚C ............................................................................... 8-Pin NSOIC
SP490CN/TR ................................................................................ 0˚C to +70˚C ............................................................................... 8-Pin NSOIC
SP490CS ...................................................................................... 0˚C to +70˚C ................................................................................ 8-Pin PDIP
SP490EN ..................................................................................... -40˚C to +85˚C ............................................................................. 8-Pin NSOIC
SP490EN/TR ............................................................................... -40˚C to +85˚C ............................................................................. 8-Pin NSOIC
SP490ES ..................................................................................... -40˚C to +85˚C .............................................................................. 8-Pin PDIP
SP491CN ...................................................................................... 0˚C to +70˚C .............................................................................. 14-Pin NSOIC
SP491CN/TR ................................................................................ 0˚C to +70˚C .............................................................................. 14-Pin NSOIC
SP491CS ...................................................................................... 0˚C to +70˚C ............................................................................... 14-Pin PDIP
SP491EN ..................................................................................... -40˚C to +85˚C ............................................................................ 14-Pin NSOIC
SP491EN/TR ............................................................................... -40˚C to +85˚C ............................................................................ 14-Pin NSOIC
SP491ES ..................................................................................... -40˚C to +85˚C ............................................................................. 14-Pin PDIP
/TR = Tape and Reel
Pack quantity is 2500 for NSOIC.
Please consult factory for pricing and availability of various package and temperature options or price and availability of tapeon-reel.
Corporation
ANALOG EXCELLENCE
Sipex Corporation
Headquarters and
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the
application or use of any product or circuit described hereing; neither does it convey any license under its patent rights nor the rights of others.
Date: 05/10/04
SP490/491 Full Duplex RS-485 Transceivers
12
© Copyright 2004 Sipex Corporation