SP339E Datasheet, PDF (4/21 Pages) Exar Corporation – RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION

SP339E
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
PIN DESCRIPTIONS BY MODE (MODE1, MODE0)
Pin
Name
00, Figure 1
01, Figure 2
10, Figure 3
21
R9
R5 Input
REV. 1.0.0
11, Figure 4
22
R8
23
GND
24
R7
R4 Input
Ground
T3 Output
25
R6
26
GND
27
R4
R3 Input
Ground
T2 Output
R1 Input B
28
R3
29
GND
30
R2
T1 Output
Ground
R2 Input
R1 Input A, T1 Out A
R2 Input A
T1 Out A
31
R1
32
VCC
33
VSS
34
C2-
35
C1-
36
GND
37
C1+
38
VCC
39
C2+
40
VDD
R1 Input
R1 Input B, T1 Out B
T1 Out B
V_CC
V_SS - Charge pump negative supply, 0.1µF 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, 0.1µF
V_CC
C₂₊ - Charge pump cap 2 positive lead, 0.1µF
V_DD - Charge pump positive supply, 0.1µF to ground
4