参数资料
型号: SP332CT-L
厂商: Exar Corporation
文件页数: 1/11页
文件大小: 0K
描述: IC TXRX RS232/485 SRL 28WSOIC
标准包装: 1,500
类型: 收发器
驱动器/接收器数: 4/4
规程: RS232,RS485
电源电压: 5V
安装类型: 表面贴装
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
供应商设备封装: 28-SOIC W
包装: 管件
Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP332_00_0260
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 con-
nects driver outputs to receiver inputs for a chip self test. An
Exar-patended charge pump
allows +5V-only operation.
DESCRIPTION
+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
SP332
TYPICAL APPLICATIONS CIRCUIT
SEL A
TTL/CMOS
C1+
C1-
C2+
C2-
1
SEL B
2
+5V
VCC
5
GND
8
9
11
12
13
19
20
22
24
26
27
28
TTL/CMOS
T1
T3
R1
RS-485
V+
V-
RS-485
4
6
7
10
14
15
16
23
25
3
RI1
RI2
TX3
TX4
TX1
TX2
TI1
TI2
TI3
TI4
RX1
RX2
TTL/CMOS
21
R3
17
18
RI4
RI3
RX3
RX4
15K
400K
Vcc
400K
Vcc
RS-485
+5V
GND
TTL/CMOS
0.1F
VCC
V+
V-
SHUTDOWN
RS-232
TTL/CMOS
T1
T2
T3
T4
TX1
TX2
TX3
TX4
TI1
TI2
TI3
TI4
RI1
RI2
RI3
RI4
RX1
RX2
RX3
RX4
1
3
4
5
6
7
8
10
C1+
C1-
C2+
C2-
9
11
12
13
14
15
16
17
18
19
20
21
22
23
SEL B
2
SEL A
24
25
26
27
28
R1
R2
R3
R4
5K
400K
Vcc
RS-232
LOOPBACK
0V
SP332
0.1F
400K
5K
0.1F
15K
TTL/CMOS
SHUTDOWN
LOOPBACK
TTL/CMOS
RS-232 Mode
Full Duplex RS-485 Mode
TTL/CMOS
RS-232/RS-485 Multi-mode SerialTransceiver
TI4
SEL_B
TX4
TX3
VCC
TX1
TX2
GND
C1+
V+
C2+
C1–
C2–
V–
TI3
TI2
TI1
SD
SEL_A
LB
RX4
RX3
RX2
RX1
RI4
RI3
RI2
RI1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
SP332
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