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UPD4723 数据表(PDF) 2 Page - NEC

部件名 UPD4723
功能描述  RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V
Download  16 Pages
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制造商  NEC [NEC]
网页  http://www.nec.com/
标志 NEC - NEC

UPD4723 数据表(HTML) 2 Page - NEC

  UPD4723 Datasheet HTML 1Page - NEC UPD4723 Datasheet HTML 2Page - NEC UPD4723 Datasheet HTML 3Page - NEC UPD4723 Datasheet HTML 4Page - NEC UPD4723 Datasheet HTML 5Page - NEC UPD4723 Datasheet HTML 6Page - NEC UPD4723 Datasheet HTML 7Page - NEC UPD4723 Datasheet HTML 8Page - NEC UPD4723 Datasheet HTML 9Page - NEC Next Button
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µPD4723
2
BLOCK DIAGRAM/PIN CONFIGURATION (Top View)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
DIN1
DIN2
DIN3
ROUT1
ROUT2
ROUT3
NC
NC
STBY
VCHA
EN
DOUT1
DOUT2
DOUT3
RIN1
RIN2
RIN3
NC
NC
VDD
C1+
VCC
C1
C5+
GND
C5
C4+
GND
C4
VSS
+10 V
C3
C1
C5
–10 V
+
C2
C4
+
+
+
Note 4
300
300
300
5.5 k
5.5 k
+3.3 V
or
+5 V
+
5.5 k
Note 1. VDD and VSS are output pins stepped up internally. These pins should not be loaded directly.
2. Capacitors C1 to C5 with a breakdown voltage of 20 V or higher are recommended. And it is recommended
to insert the capacitor that is 0.1
µF to 1 µF between VCC and GND.
3. If VCHA is kept low level (in 5 V mode), capacitor C5 is not necessary.
4. The pull-up resistors at driver input are active resistors.


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