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SP335E Datasheet(PDF) 8 Page - Exar Corporation

Part # SP335E
Description  TRANSCEIVER WITH INTERNAL TERMINATION
Download  23 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

SP335E Datasheet(HTML) 8 Page - Exar Corporation

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SP335E
8
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
REV. 1.0.2
PIN DESCRIPTIONS
Pin
Name
RS-232
RS-485 Full Duplex
RS-485 Half Duplex
1
2
GND
Ground
3
T1OUT, B/Z
Transmitter 1 Output
Z Driver Neg Output
B/Z Neg Input/Output
4
T2OUT, A/Y
Transmitter 2 Output
Y Driver Pos Output
A/Y Pos Input/Output
5
6
R1OUT
Receiver 1 Output
X
X
7
R2OUT, RO
Receiver 2 Output
Receiver TTL Output
Receiver TTL Output
8
9
10
SHDN
Low power shutdown mode when low
11
SLEW
Data rate limited to 250kbps when low
12
FD_TX_TERM
X
120
 Y-Z termination
enabled when both TERM
and FD_TX_TERM are high
X
13
TERM
X
120
 A-B termination enabled when high
14
RS-485/RS-232
0
1
1
15
HALF/FULL
X
0
1
16
17
GND
Ground
18
R2IN, A
Receiver 2 Input
A Pos Receiver Input
X
19
R1IN, B
Receiver 1 Input
B Neg Receiver Input
X
20
RE
X
Receiver enabled when low
21
T2IN, DE
Transmitter 2 Input
Driver enabled when high
22
T1IN, DI
Transmitter 1 Input
Driver TTL Input
23
24
25
V-
Charge pump negative supply, 0.1µF from ground
26
C2-
Charge pump cap 2 negative lead
27
C2+
Charge pump cap 2 positive lead, 0.1µF
28
V+
Charge pump positive supply, 0.1µF to ground
29
C1+
Charge pump cap 1 positive lead, 0.1µF
30
VL
Logic Supply for TTL Inputs and Outputs, VL = +1.65V to +5.5V or tie to VCC
31
VCC
Main Supply, VCC = +3.0V to +5.5V, bypass to ground with 1.0µF
32
C1-
Charge pump cap 1 negative lead


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