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SP332 Datasheet Preview

SP332 Datasheet

RS-232/RS-485 Transceiver

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SP332
RS-232/RS-485 Multi-Mode Serial Transceiver
Description
The SP332 is a monolithic device that contains both RS-232 and
RS-485 line drivers and receivers. The configuration of the SP332
can be changed at any time by changing the logic state of two control
pins. The device also includes a loop back function which internally
connects driver outputs to receiver inputs for a chip self test. An
MaxLinear-patented charge pump allows 5V-only operation.
FEATURES
■■ 5V only single supply operation
■■ Software programmable RS-232 or
RS-485 selection
■■ 4 drivers, 4 receivers RS-232
■■ 2 drivers, 2 receivers RS-485
■■ Loop back function for self test
■■ 28-pin WSOIC package
Typical Applications Circuit
0.1µF
0.1µF
0V
0V
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
RS-232 Mode
5V
9 C1+
5
VCC
0.1µF
12 C1-
11 C2+
13 C2-
SP332
V+ 10
V+ 14
0.1µF
24 SEL A
23
LOOPBACK
TTL/CMOS
2
26
SEL B
TI1
VCC
400KΩ
T1
TX1 6
RS-232
27 TI2
VCC
400KΩ
T2
TX2 7
RS-232
28 TI3
VCC
400KΩ
T3
TX3 4
RS-232
1 TI4
VCC
400KΩ
T4
TX4 3
RS-232
19 RX1 R1
20 RX2 R2
21 RX3 R3
22 RX4 R4
8 GND
RI1 15
5KΩ GND
RI2 16
5KΩ GND
RI3 17
5KΩ GND
RI4 18
5KΩ GND
25
SHUTDOWN
RS-232
RS-232
RS-232
RS-232
TTL/CMOS
Ordering Information - Back Page
Full Duplex RS-485 Mode Mode
5V
0.1µF
0.1µF
+5V
+5V
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
9 C1+
5
VCC
0.1µF
12 C1-
11 C2+
13 C2-
SP332
V+ 10
V+ 14
0.1µF
24 SEL A
2 SEL B VCC
26 TI1 400KΩ
27 TI2
23
LOOPBACK
TX2 7
T1 TX1 6
TTL/CMOS
RS-485
RS-485
VCC
400KΩ
28 TI3
1 TI4
T3
TX4 3
TX3 4
RS-485
RS-485
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
19 RX1
20 RX2
21 RX3
22 RX4
RI12 16
R1
150KΩ
GND
RI1 15
150KΩ
GND
RI4 18
R3
150KΩ
GND
RI3 17
150KΩ
GND
RS-485
RS-485
RS-485
RS-485
8 GND
25
SHUTDOWN
TTL/CMOS
REV 1.0.1
1/11




MaxLinear

SP332 Datasheet Preview

SP332 Datasheet

RS-232/RS-485 Transceiver

No Preview Available !

SP332
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 to 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.........................±30V @ ≤100mA
Driver Outputs.............................................................. ±15V
Maximum Data Rate................................................ 8Mbps(1)
Storage Temperature................................... -65°C to 150°C
Power Dissipation
28-pin WSOIC.............................. 1000mW
Power Derating, øJA
28-pin WSOIC................................ 40°C/W
Electrical Characteristics
Limits are specified at TA = 25°C and VCC = 5.0V unless otherwise noted.
Parameters
Min. Typ. Max. Units
Conditions
RS-485 Driver DC Characteristics
Differential output voltage
Differential output voltage
Differential output voltage
Change in magnitude of driver differential
output voltage for complementary states
Driver common-mode output voltage
Input high voltage
Input low voltage
Input current
Pull-up current
Pull-down current
Driver short circuit current VOUT = HIGH
Driver short circuit current VOUT = LOW
RS-485 Driver AC Characteristics
2.0
1.5
2.0
35
35
Vcc Volts Unloaded; R = ∞Ω; See Figure 1
5.0 Volts With load; R = 50Ω (RS-422); See Figure 1
5.0 Volts With load; R = 27Ω (RS-485); See Figure 1
0.2 Volts R = 27Ω or R = 50Ω; See Figure 1
3 Volts R = 27Ω or R = 50Ω; See Figure 1
Volts Applies to transmitter inputs, SEL A, SEL B, SD and LB
0.8 Volts Applies to transmitter inputs, SEL A, SEL B, SD and LB
±10 µA Applies to transmitter inputs, SEL A, SEL B, SD and LB
1.5 µA
3.0 µA
250 mA -7V ≤ VO ≤ 10V
250 mA -7V ≤ VO ≤ 10V
Driver data rate
Driver data rate
Driver input to output tPLH
Driver input to output tPHL
Driver skew
Driver rise or fall time
10 Mbps
8 Mbps TA = 85°C(1)
70 180 ns RDIFF = 54Ω, CL1 = CL2 = 100pF; see Figures 3 and 5
70 180 ns RDIFF = 54Ω, CL1 = CL2 = 100pF; see Figures 3 and 5
5 10 ns From output to output; see Figures 3 and 5
3
15
40
ns
From 10% to 90%; RDIFF = 54Ω, CL1 = CL2 = 100pF;
see Figures 3 and 5
REV 1.0.1
2/11


Part Number SP332
Description RS-232/RS-485 Transceiver
Maker MaxLinear
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SP332 Datasheet PDF






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