SP3222EEA-L-TR Datasheet, PDF (5/24 Pages) Exar Corporation – True +3.0V to +5.5V RS-232 Transceivers

Pin Function
NAME
EN
C1+
V+
C1-
C2+
C2-
V-
T₁OUT
T₂OUT
R₁IN
R₂IN
R₁OUT
R₂OUT
T₁IN
T₂IN
GND
V_CC
SHDN
N.C.
FUNCTION
Receiver Enable. Apply Logic LOW for normal operation.
Apply logic HIGH to disable the receiver outputs (high-Z state)
Positive terminal of the voltage doubler charge-pump capacitor
+5.5V output generated by the charge pump
Negative terminal of the voltage doubler charge-pump capacitor
Positive terminal of the inverting charge-pump capacitor
Negative terminal of the inverting charge-pump capacitor
-5.5V output generated by the charge pump
RS-232 driver output.
RS-232 driver output.
RS-232 receiver input
RS-232 receiver input
TTL/CMOS receiver output
TTL/CMOS receiver output
TTL/CMOS driver input
TTL/CMOS driver input
Ground
+3.0V to +5.5V supply voltage
Shutdown Control Input. Drive HIGH for normal device operation.
Drive LOW to shutdown the drivers (high-Z output) and the on-
board power supply
No Connect
PIN NUMBER
SP3222E
SP3232E
SOIC SSOP
TSSOP
1
1
-
2
2
1
3
3
2
4
4
3
5
5
4
6
6
5
7
7
6
15
17
14
8
8
7
14
16
13
9
9
8
13
15
12
10
10
9
12
13
11
11
12
10
16
18
15
17
19
16
18
20
-
-
11, 14
-
Table 1. Device Pin Description
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com

SP3222E/SP3232E_101_031413