SP332 Datasheet, PDF (1/10 Pages) Sipex Corporation – RS-232/RS-485 Multi-Mode Serial Transceiver

®
SP332
RS-232/RS-485 Multi-Mode Serial Transceiver
s +5V-Only Single Supply Operation
s 4 Drivers, 4 Receivers RS-232
s 2 Drivers, 2 Receivers RS-485
s Loop Back Function for Self Test
s 28 Pin SOIC Packaging
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 input pins. The device also includes a loop back function which internally
connects driver outputs to receiver inputs for a chip self test. A Sipex-patented charge pump
(5,306,954) allows +5V-only operation.
RS-232 Mode
+5V
0.1µF
0.1µF
0V
0V
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
9 _C1+
5
VCC
12 _C1-
11 _C2+
SP332
10
V+
V- ¹⁴
13
C2-
24 _{SEL A}
2 _{SEL B}
Vcc
0.1µF
LOOP ²³
BACK
400KΩ
26 TI1
T1
Vcc
TX1 6
400KΩ
27 TI2
T2
Vcc
TX2 7
400KΩ
28 TI3
T3
Vcc
TX3 4
400KΩ
1 TI4
T4
TX4 3
0.1µF
TTL/CMOS
RS-232
RS-232
RS-232
RS-232
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
19 RX1
20 RX2
21 RX3
22 RX4
8
GND
RI1 15
R1
5KΩ
RI2 16
R2
5KΩ
RI3 17
R3
5KΩ
RI4 18
R4
5KΩ
25
SHUT
DOWN
RS-232
RS-232
RS-232
RS-232
TTL/CMOS
Full Duplex RS-485
+5V
0.1µF
0.1µF
TTL/CM+5OVS
TTL/CM+5OVS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
9 _C1+
5
VCC
12 _C1-
11 _C2+
SP332
13
C2-
24
2 ^{SEL A}
SEL B
Vcc
26 TI1
T1
27 TI2 Vcc
28 TI3
T3
1
TI4
19 RX1
R1
20
RX2
21 RX3
R3
22 _RX4
8 _GND
10
V+
14
V-
0.1µF
LOOP ²³
BACK
TX2 7
TX1 6
TX4 ³
TX3 4
RI2 16
RI1 15
RI4 18
RI3 17
SHUT ²⁵
DOWN
0.1µF
TTL/CMOS
RS-485/RS-232
RS-485/RS-232
RS-485/RS-232
RS-485/RS-232
RS-485/RS-232
RS-485/RS-232
RS-485/RS-232
RS-485/RS-232
TTL/CMOS
TGoddard/SP332/9617R0
SP332 RS-232/RS-485 Multi-Mode Serial Transceiver
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© Copyright 2000 Sipex Corporation