upd4724 Renesas Electronics Corporation., upd4724 Datasheet - Page 2
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upd4724
Manufacturer Part Number
upd4724
Description
Rs-232 Line Driver/receiver At 3.3 V/5 V
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD4724.pdf
(16 pages)
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BLOCK DIAGRAM/PIN CONFIGURATION (TOP VIEW)
Note The pull-up resistors of the driver inputs are active resistors.
Remark 1. V
2
+3.3 V
+5 V
2. Capacitors with a breakdown voltage of 20 V or higher are recommended for C
3. The capacitor C
or
load.
recommended to insert the capacitor that is 0.1 F to 1 F between V
DD
and V
C
1
SS
+
are pins that output the voltage boosted internally. Don't connect these pins to the
C
C
+10 V
3
5
5
does not have to be connected when the IC is used in 5 V mode (V
+
+
R
R
R
R
R
D
D
D
OUT1
OUT2
OUT3
OUT4
OUT5
IN1
IN2
IN3
10
11
12
13
14
15
1
2
3
4
5
6
7
8
9
V
C
V
C
C
GND
C
DD
1
CC
1
5
5
+
–
+
–
Note
5.5 k
5.5 k
5.5 k
5.5 k
5.5 k
300
300
300
GND
V
C
C
SS
4
4
+
–
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
STBY
V
EN
D
D
D
R
R
R
R
R
CHA
OUT1
OUT2
OUT3
IN1
IN2
IN3
IN4
IN5
CC
and GND.
+
C
4
1
–10 V
+
to C
C
2
5
. And it is
CHA
= L).
PD4724