SP3243EBCA-L-TR Datasheet, PDF (6/25 Pages) Exar Corporation – 3 Driver/5 Receiver Intelligent +3.0V to +5.5V RS-232 Transceivers

NAME
FUNCTION
C1+
V+
C1-
C2+
C2-
V-
R₁IN
R₂IN
R₃IN
R₄IN
R₅IN
R₁OUT
R₂OUT
R₂OUT
R₃OUT
R₄OUT
R₅OUT
STATUS
T₁IN
T₂IN
T₃IN
ONLINE
T1_OUT
T2_OUT
T3_OUT
GND
Positive terminal of the voltage doubler charge-pump capacitor
Regulated +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
Regulated -5.5V output generated by the charge pump
RS-232 receiver input.
RS-232 receiver input
RS-232 receiver input
RS-232 receiver input
RS-232 receiver input
TTL/CMOS receiver output
TTL/CMOS receiver output
Non-inverting receiver-2 output, active in shutdown
TTL/CMOS receiver output
TTL/CMOS receiver output
TTL/CMOS receiver output
TTL/CMOS Output indicating online and shutdown status
TTL/CMOS driver input
TTL/CMOS driver input
TTL/CMOS driver input
Apply logic HIGH to override AUTO ON-LINE® circuitry
keeping drivers acive (SHUTDOWN must also be logic
HIGH, refer to Table 2)
RS-232 driver output
RS-232 driver output
RS-232 driver output
Ground
V_CC
+3.0V to +5.5V supply voltage
SHUTDOWN
NC
Apply logic LOW to SHUTDOWN driver and charge pump.
This overrides all AUTO ON-LINE® circuitry and ONLINE
(Refer to table 2)
No Connection
PIN NUMBER
SP3243E
SP3243EUCR
QFN
28
28
27
26
24
22
1
29
2
31
3
32
4
2
5
3
6
4
7
5
8
6
19
17
18
16
20
18
17
15
16
14
15
13
21
19
14
12
13
11
12
10
23
21
9
7
10
8
11
9
25
23
26
25
22
20
-
1,24,27,30
Table 1. Device Pin Description
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com

SP3243E_102_060611