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SP339B Datasheet(PDF) 4 Page - Exar Corporation

Part # SP339B
Description  TRANSCEIVER WITH INTERNAL TERMINATION
PDF  23 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

SP339B Datasheet(HTML) 4 Page - Exar Corporation

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SP339B
4
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
REV. 1.0.0
PIN DESCRIPTIONS BY MODE (MODE1, MODE0)
Pin
Name
00, Figure 1
01, Figure 2
10, Figure 3
11, Figure 4
21
R9
R5 Input
22
R8
R4 Input
23
GND
Ground
24
R7
T3 Output
25
R6
R3 Input
26
GND
Ground
27
R4
T2 Output
R1 Input B
28
R3
T1 Output
R2 Input A
29
GND
Ground
30
R2
R2 Input
R1 Input A, T1 Out A
T1 Out A
31
R1
R1 Input
R1 Input B, T1 Out B
T1 Out B
32
VCC
VCC - 1.0F to ground recommended for supply decoupling
33
VSS
VSS - Charge pump negative supply, 0.1F from ground
34
C2-
C2+ - Charge pump cap 2 negative lead
35
C1-
C1- - Charge pump cap 1 negative lead
36
GND
Ground
37
C1+
C1+ - Charge pump cap 1 positive lead, 0.1F
38
VCC
VCC
39
C2+
C2+ - Charge pump cap 2 positive lead, 0.1F
40
VDD
VDD - Charge pump positive supply, 0.1F to ground



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