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UPD4712C の電気的特性と機能

UPD4712CのメーカーはNECです、この部品の機能は「RS-232 LINE DRIVER/RECEIVER」です。


製品の詳細 ( Datasheet PDF )

部品番号 UPD4712C
部品説明 RS-232 LINE DRIVER/RECEIVER
メーカ NEC
ロゴ NEC ロゴ 




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UPD4712C Datasheet, UPD4712C PDF,ピン配置, 機能
DATA SHEET
MOS INTEGRATED CIRCUIT
µPD4712C/4712D
RS-232 LINE DRIVER/RECEIVER
The µPD4712C and 4712D are high-voltage silicon gate CMOS line driver/reciever conforming to the
EIA/TIA-232-E standard. It can operate with a single +5 V power source because it is provided with a DC-DC converter.
In addition, this line driver/receiver has many ancillary functions, including output control, threshold select, and
standby functions. Because the µPD4712C and 4712D are provided with four output driver circuits and four receiver
circuits, it can constitute an RS-232 interface circuit with a single chip.
FEATURES
• Conforms to EIA/TIA-232-E (RS-232C) standard
• +5 V single power source
• Threshold select pin selecting two types of threshold voltages
• Standby mode can be set by making standby pin high to reduce circuit current.
• Three-state output configuration. Both driver and receiver outputs go into high-impedance state in standby mode.
ORDERING INFORMATION
Part Number
µPD4712CCY
µPD4712DCY
µPD4712CGT
µPD4712DGT
Package
28-pin plastic DIP (400 mil)
28-pin plastic DIP (400 mil)
28-pin plastic SOP (375 mil)
28-pin plastic SOP (375 mil)
Document No. S10316EJ3V1DS00 (3rd edition)
Date Published April 1997 N
Printed in Japan
© 1995

1 Page





UPD4712C pdf, ピン配列
TRUTH TABLE
Drivers
STBY
H
L
L
L
DCON
X
L
H
H
Receivers
DIN DOUT
Remark
X Z Standby mode (DC-DC converter stops)
X L Mark level output
L H Space level output
H L Mark level output
STBY
H
L
L
RIN
X
L
H
ROUT
Z
H
L
Remark
Stanby mode (DC-DC converter stops)
Mark level input
Space level input
Receiver input threshold voltage
RCON
L
H
RIN1 to RIN2
A mode
A mode
RIN3 to RIN4
A mode
B mode*/C mode **
*: µPD4712C, **: µPD4712D
H: high level, L: low level, Z: high impedance, X: H or L
µPD4712C/4712D
3


3Pages


UPD4712C 電子部品, 半導体
Note 5. Test Point
Standby input
5V
0V
1.5 V
µPD4712C/4712D
1.5 V
Driver output
VOH
VOL
+5 V
–5 V
High impedance
+5 V
–5 V
tDAZ
tDZA
Do not perform communication within the standby output transition time tDZA on power application or on releasing
the standby mode.
ELECTRICAL CHARACTERISTICS (RECEIVER)
(Unless otherwise specified, VCC = +5 V ±10 %, TA = –20 ˚C to +80 ˚C, C1 to C4 = 22 µF)
Parameter
Low-level output voltage
High-level output voltage
Symbol
VOL
Conditions
IOUT = 4 mA
VOH IOUT = –4 mA
Low-level input voltage
High-level input voltage
Propagation delay time Note 7
Input current
Input resistance
Input pin release voltage
Input threshold A mode
(RCON pin low)
Input threshold B mode Note 6
(RCON pin high)
Only applicable to the µPD4712C
Input threshold C mode Note 6
(RCON pin high)
Only applicable to the µPD4712D
Standby output transition time
Standby output transiton time
VIL
VIH
tPHL
tPLH
IIN
RI
VIO
VIH
VIL
VH
VIH
VIL
VH
VIH
VIL
VH
tDAZ
tDZA
RCON pin
RCON pin
RL = 1 k, CL = 150 pF
Input threshold A mode only
VCC = +5 V
VCC = +5 V
VCC = +5 V (hysteresis width)
VCC = +5 V
VCC = +5 V
VCC = +5 V (hysteresis width)
VCC = +5 V
VCC = +5 V
VCC = +5 V (hysteresis width)
Note 8
Note 8
* TYP.: Typical (reference) value at TA = 25 ˚C.
MIN.
VCC
–0.8
2.0
TYP.
MAX
0.4
0.8
Unit
V
V
V
V
0.13 µs
1 mA
3 5 7 k
0.5 V
1.6 2.2 2.6 V
0.6 1 1.6 V
0.5 1.2 1.8 V
1.6 2.2 2.6 V
–0.4 –1.8 –3.0 V
2.6 4.0 5.4 V
–0.4 –0.8 –1.6 V
–0.8 –2.0 –3.0 V
0.5 1.2 1.8 V
0.4 1 µs
0.03 10
ms
Note 6. This data is applicable to receivers 3 and 4 only. Receiver 1 and 2 are fixed in input threshold A mode.
6

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
UPD4712C

RS-232 LINE DRIVER/RECEIVER

NEC
NEC
UPD4712CCY

RS-232 LINE DRIVER/RECEIVER

NEC
NEC
UPD4712CGT

RS-232 LINE DRIVER/RECEIVER

NEC
NEC
UPD4712D

RS-232 LINE DRIVER/RECEIVER

NEC
NEC


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