SP338E Datasheet, PDF (4/25 Pages) Exar Corporation – RS-232/RS-485/RS-422 TRANSCEIVER

SP338E
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
PIN DESCRIPTIONS BY MODE (MODE2, MODE1, MODE0)
REV. 1.0.0
Pin Name
000,
Figure 1
001,
Figure 2
010,
Figure 3
011,
Figure 4
100,
Figure 5
101,
Figure 6
110,
Figure 7
111,
Figure 8
21 R9
R5 Input
R2 Input B R1 Input B
R4 Input B
22 R8
23 GND
24 R7
25 R6
26 GND
27 R4
28 R3
29 GND
30 R2
31 R1
32 VCC
33 VSS
34 C2-
35 C1-
36 GND
37 C1+
38 VCC
39 C2+
40 VDD
R4 Input
R2 Input A
R4 Input A
T3 Output
R3 Input
T2 Output
Ground
T2 Out A R1 Input A
R3 Input A
T2 Out A
T2 Out B
R3 Input B
T2 Out B
Ground
R1 Input A
R1 Input B R1 Input B T1 Out A
R2 Input B
T1 Out A
T1 Output
R2 Input A R1 Input A
R2 Input A
R2 Input
R1 Input
R1 Input A
T1 Out A
R1 Input B
T1 Out B
Ground
T1 Out A T1 Out A
T1 Out B T1 Out B
V_CC
T1 Out B
R1 Input A
T1 Out A
R1 Input B R1 Input B
T1 Out B T1 Out B
V_SS - Charge pump negative supply, 0.1uF from ground
C₂₊ - Charge pump cap 2 negative lead
C_1- - Charge pump cap 1 negative lead
Ground
C₁₊ - Charge pump cap 1 positive lead, 0.1uF
V_CC
C₂₊ - Charge pump cap 2 positive lead, 0.1uF
V_DD - Charge pump positive supply, 0.1uF to ground
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