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RS-422 Datasheet(PDF) 8 Page - Exar Corporation

Part # RS-422
Description  SP330E RS-232/RS-485/RS-422 TRANSCEIVER WITH 1.65V-5.5V INTERFACE
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

RS-422 Datasheet(HTML) 8 Page - Exar Corporation

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SP330E
8
RS-232/RS-485/RS-422 TRANSCEIVER WITH 1.65V-5.5V INTERFACE
REV. 1.0.0
PIN DESCRIPTIONS
Pin
Name
RS-232
RS-485 Full Duplex
RS-485 Half Duplex
1
C1+
Charge pump cap 1 positive lead, 0.1µF
2
VL
Logic Supply for TTL Inputs and Outputs, VL = +1.65V to +5.5V or tie to VCC
3
VCC
Main Supply, VCC = +3.0V to +5.5V, bypass to ground with 1.0µF
4
C1-
Charge pump cap 1 negative lead
5
GND
Ground
6
T1OUT, B/Z
Transmitter 1 Output
Z Driver Neg Output
B/Z Neg Input/Output
7
T2OUT, A/Y
Transmitter 2 Output
Y Driver Pos Output
A/Y Pos Input/Output
8
R1OUT
Receiver 1 Output
X
X
9
R2OUT, RO
Receiver 2 Output
Receiver TTL Output
Receiver TTL Output
10
11
SHDN
Low power shutdown mode when low
12
SLEW
Data rate limited to 250kbps when low
13
RS-485/RS-232
0
1
1
14
HALF/FULL
X
0
1
15
GND
Ground
16
R2IN, A
Receiver 2 Input
A Pos Receiver Input
X
17
R1IN, B
Receiver 1 Input
B Neg Receiver Input
X
18
RE
X
Receiver enabled when low
19
T2IN, DE
Transmitter 2 Input
Driver enabled when high
20
T1IN, DI
Transmitter 1 Input
Driver TTL Input
21
V-
Charge pump negative supply, 0.1µF from ground
22
C2-
Charge pump cap 2 negative lead
23
C2+
Charge pump cap 2 positive lead, 0.1µF
24
V+
Charge pump positive supply, 0.1µF to ground


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