1993
DATA SHEET
MOS INTEGRATED CIRCUIT
PD4723
Document No. S12200EJ2V0DS00 (2nd edition)
(Previous No. IC-3284)
Date Published January 1997 N
Printed in Japan
RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V
The
PD4723 is a high-breakdown voltage silicon gate CMOS line driver/receiver based on the EIA/TIA-232-E
standard. The internal DC/DC converter can switch between multiple voltages, allowing it to operate with a single
+3.3 V or +5 V power supply. It also provides standby function.
This IC incorporates 3 driver circuits and 3 receiver circuits. An RS-232 interface circuit can be easily configured
by connecting 5 capacitors externally.
Features
Conforms to EIA/TIA-232-E (former name, RS-232C) standards
Selectable +3.3 V/+5 V single power supply (selected by V
CHA
pin)
By setting the standby pin to a low level (standby mode), circuit current can be reduced. At such times,
the driver output is in a high-impedance state.
Even in the standby mode, 2 receiver circuits can operate as inverters without hysteresis width.
The other circuit is fixed at a high level.
Ordering Information
Part number
Package
PD4723GS-GJG
30-pin plastic SSOP (300 mil)
PD4723
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
D
IN1
D
IN2
D
IN3
R
OUT1
R
OUT2
R
OUT3
NC
NC
STBY
V
CHA
EN
D
OUT1
D
OUT2
D
OUT3
R
IN1
R
IN2
R
IN3
NC
NC
V
DD
C
1
+
V
CC
C
1
C
5
+
GND
C
5
C
4
+
GND
C
4
V
SS
+10 V
C
3
C
1
C
5
10 V
+
C
2
C
4
+
+
+
Note 4
300
300
300
5.5 k
5.5 k
+3.3 V
or
+5 V
+
5.5 k
Note 1. V
DD
and V
SS
are output pins stepped up internally. These pins should not be loaded directly.
2. Capacitors C
1
to C
5
with a breakdown voltage of 20 V or higher are recommended. And it is recommended
to insert the capacitor that is 0.1
F to 1
F between V
CC
and GND.
3. If V
CHA
is kept low level (in 5 V mode), capacitor C
5
is not necessary.
4. The pull-up resistors at driver input are active resistors.
PD4723
3
Truth Table
Driver
STBY
DIN
DOUT
Remarks
L
Z
Standby mode (DC/DC converter is stopped)
H
L
H
Space level output
H
H
L
Mark level output
Receiver
STBY
EN
R
IN
R
OUT
Remarks
R
2
to R
3
R
1
R
2
to R
3
R
1
L
L
H
H
Standby mode 1 (DC/DC converter is stopped)
L
H
L
H
H
Standby mode 2 (DC/DC converter is stopped, R
2
and
R
3
are operated)
L
H
H
L
H
Standby mode 2 (DC/DC converter is stopped, R
2
and
R
3
are operated)
H
L
H
Mark level input
H
H
L
Space level input
3 V
5 V switching
Note 5
V
CHA
Operating mode
L
5 V mode (double step-up)
H
3 V mode (3 times step-up)
H: high-level, L: low-level, Z: high-impedance,
: H or L
Note 5. When switching V
CHA
, standby mode must be selected (STBY = L).
PD4723
4
ABSOLUTE MAXIMUM RATINGS (T
A
= 25
C)
Parameter
Symbol
Ratings
Unit
Supply Voltage (V
CHA
= L)
V
CC
0.5 to +7.0
V
Supply Voltage (V
CHA
= H)
V
CC
0.5 to +4.5
V
Driver Input Voltage
D
IN
0.5 to V
CC
+0.5
V
Receiver Input Voltage
R
IN
30.0 to +30.0
V
Control Input Voltage (STBY, V
CHA
, EN)
V
IN
0.5 to V
CC
+0.5
V
Driver Output Voltage
D
OUT
25.0 to +25.0
Note 6
V
Receiver Output Voltage
R
OUT
0.5 to V
CC
+0.5
V
Input Current (D
IN
, STBY, V
CHA
, EN)
I
IN
20.0
mA
Operating Ambient Temperature
T
A
40 to +85
C
Storage Temperature
T
stg
55 to + 150
C
Total Power Dissipation
P
T
0.5
W
Note 6. Pulse width = 1 ms, duty = 10 % MAX.
RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
MIN.
TYP.
MAX.
Unit
Supply Voltage (V
CHA
= L, 5 V mode)
V
CC
4.5
5.0
5.5
V
Supply Voltage (V
CHA
= H, 3 V mode)
V
CC
3.0
3.3
3.6
V
High-Level Input Voltage (D
IN
)
V
IH
2.0
V
CC
V
Low-Level Input Voltage (D
IN
)
V
IL
0
0.8
V
High Level Input Voltage (STBY, V
CHA
, EN)
V
IH
2.4
V
CC
V
Low Level Input Voltage (STBY, V
CHA
, EN)
V
IL
0
0.6
V
Receiver Input Voltage
R
IN
30
+30
V
Operating Ambient Temperature
T
A
40
+85
C
Capacitance of External Capacitor
Note 7
0.33
4.7
F
Note 7. In low temperature (below 0
C), the capacitance of electrolytic capacitor becomes lower. Therefore, set
higher values when using in low temperature.
Concerning the wiring length between the capacitor and the IC, the shorter the better.
Capacitors with good frequency characteristics such as tantalum capacitors, laminated ceramic capacitors,
and aluminum electrolytic capacitors for switching power supply are recommended for the external
capacitors.
PD4723
5
ELECTRICAL SPECIFICATIONS (TOTAL)
(UNLESS OTHERWISE SPECIFIED, T
A
= 40 to +85
C, C
1
to C
5
= 1
F)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
V
CC
= +3.3 V, No load, R
IN
pin OPEN,
14
mA
Circuit Current
I
CC1
STBY = H
V
CC
= +5.0 V, No load, R
IN
pin OPEN,
10
mA
STBY = H
V
CC
= +3.3 V, R
L
= 3 k
(D
OUT
), D
IN
= GND,
35
mA
Circuit Current
I
CC2
R
IN
, R
OUT
pin OPEN, STBY = H
V
CC
= +5.0 V,R
L
= 3 k
(D
OUT
), D
IN
= GND,
28
mA
R
IN
, R
OUT
pin OPEN, STBY = H
V
CC
= +3.3 V, No load, D
IN
and R
IN
pins are
1
3
A
OPEN, STBY = L, EN = L, T
A
= 25
C
Circuit Current at Standby
I
CC3
V
CC
= +3.3 V, No load, D
IN
and R
IN
pins are
5
A
(Standby Mode 1)
OPEN, STBY = L, EN = L
V
CC
= +5.0 V, No load, D
IN
and R
IN
pins are
2
5
A
OPEN, STBY = L, EN = L, T
A
= 25
C
V
CC
= +5.0 V, No load, D
IN
and R
IN
pins are
10
A
OPEN, STBY = L, EN = L
V
CC
= +3.3 V, No load, D
IN
and R
IN
pins are
1
3
A
OPEN, STBY = L, EN = H, T
A
= 25
C
Circuit Current at Standby
I
CC4
V
CC
= +3.3 V, No load, D
IN
and R
IN
pins are
5
A
(Standby Mode 2)
OPEN, STBY = L, EN = H
V
CC
= +5.0 V, No load, D
IN
and R
IN
pins are
2
5
A
OPEN, STBY = L, EN = H, T
A
= 25
C
V
CC
= +5.0 V, No load, D
IN
and R
IN
pins are
10
A
OPEN, STBY = L, EN = H
High-Level Input Voltage
V
IH
V
CC
= +3.0 to +5.5 V, STBY, V
CHA
, EN pin
2.4
V
Low-Level Input Voltage
V
IL
V
CC
= +3.0 to +5.5 V, STBY, V
CHA
, EN pin
0.6
V
High-Level Input Current
I
IH
V
CC
= +5.5 V, V
I
= 5.5 V, STBY, V
CHA
, EN pin
1
A
Low-Level Input Current
I
IL
V
CC
= +5.5 V, V
I
= 0 V, STBY, V
CHA
, EN pin
1
A
Driver input and receiver input
10
pF
Input Capacitance
C
IN
V
CC
= +3.3 V, for GND, f = 1 MHz
Driver input and receiver input
10
pF
V
CC
= +5.0 V, for GND, f = 1 MHz
STBY -- V
CHA
Time
t
SCH
V
CC
= +3.0 to 5.5 V, STBY
V
CHA
,
Note 8
1
s
V
CHA
-- STBY Time
t
CHS
V
CC
= +3.0 to 5.5 V, V
CHA
STBY
,
Note 8
1
s
STBY -- V
CC
Time
t
SC
V
CC
= +3.0 to 5.5 V, STBY
V
CC
,
Note 8
1
s
V
CC
-- STBY Time
t
CS
V
CC
= +3.0 to 5.5 V, V
CC
STBY
,
Note 8
1
s
* The TYP. values are for reference at T
A
= 25
C.
PD4723
6
Note 8. Measuring point
3.3 V
0.6 V
2.4 V
0.6 V
0.6 V
0.6 V
2.4 V
0.6 V
4.5 V
3.6 V
4.5 V
3.6 V
t
SCH
t
CHS
t
SCH
t
CHS
t
SC
t
CS
t
SC
t
CS
5 V
0.6 V
0 V
3.3 V
5 V
0 V
STBY
V
CHA
V
CC
3.3 V
PD4723
7
ELECTRICAL SPECIFICATIONS (DRIVER)
(UNLESS OTHERWISE SPECIFIED, T
A
= 40 to +85
C, C
1
to C
5
= 1
F)
3 V mode (unless otherwise specified, V
CHA
= H, V
CC
= 3.0 to 3.6 V)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Low-Level Input Voltage
V
IL
0.8
V
High-Level Input Voltage
V
IH
2.0
V
Low-Level Input Current
I
IL
V
CC
= +3.6 V, V
I
= 0 V
25
A
High-Level Input Current
I
IH
V
CC
= +3.6 V, V
I
= 3.6 V
1.0
A
V
CC
= +3.3 V, R
L
=
, T
A
= 25
C
9.5
V
Output Voltage
V
DO
V
CC
= +3.3 V, R
L
= 3 k
, T
A
= T
opt
5.0
6.0
V
V
CC
= +3.0 V, R
L
= 3 k
, T
A
= +25
C
5.0
V
Output Short-Circuit Current
I
SC
V
CC
= +3.3 V, for GND
40
mA
Slew-Rate
Note 9
SR
C
L
= 10 pF, R
L
= 3 to 7 k
3.0
30
V/
s
C
L
= 2 500 pF, R
L
= 3 to 7 k
3.0
30
V/
s
Propagation Delay Time
Note 9
t
PHL
R
L
= 3 kW, C
L
= 2 500 pF
2.5
s
t
PLH
Output Resistor
R
O
V
CC
= V
DD
= V
SS
= 0 V
300
V
OUT
=
2 V
Standby Output Transfer Time
t
DAZ
R
L
= 3 k
, C
L
= 2 500 pF,
Note 10
4
10
s
Standby Output Transfer Time
t
DZA
R
L
= 3 k
, C
L
= 2 500 pF,
Note 10
1
3
ms
Power-On Output Transfer Time
t
PRA
R
L
= 3 k
, C
L
= 2 500 pF,
Note 11
1
3
ms
* The TYP. values are for reference at T
A
= 25
C.
PD4723
8
5 V mode (unless otherwise specified, V
CHA
= L, V
CC
= +5.0 V
10 %)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Low-Level Input Voltage
V
IL
0.8
V
High-Level Input Voltage
V
IH
2.0
V
Low-Level Input Current
I
IL
V
CC
= +5.5 V, V
I
= 0 V
40
A
High-Level Input Current
I
IH
V
CC
= +5.5 V, V
I
= 5.5 V
1.0
A
V
CC
= +5.0 V, R
L
=
, T
A
= 25
C
9.7
V
Output Voltage
V
DO
V
CC
= +5.0 V, R
L
= 3 k
, T
A
= T
opt
6.0
V
V
CC
= +4.5 V, R
L
= 3 k
, T
A
= T
opt
5.0
V
Output Short-Circuit Current
I
SC
V
CC
= +5.0 V, for GND
40
mA
Slew-Rate
Note 9
SR
C
L
= 10 pF, R
L
= 3 to 7 k
4.0
30
V/
s
C
L
= 2 500 pF, R
L
= 3 to 7 k
4.0
30
V/
s
Propagation Delay Time
Note 9
t
PHL
R
L
= 3 k
, C
L
= 2 500 pF
2
s
t
PLH
Output Resistor
R
O
V
CC
= V
DD
= V
SS
= 0 V
300
V
OUT
=
2 V
Standby Output Transfer Time
t
DAZ
R
L
= 3 k
, C
L
= 2 500 pF,
Note 10
4
10
s
Standby Output Transfer Time
t
DZA
R
L
= 3 k
, C
L
= 2 500 pF,
Note 10
0.5
1
ms
Power-On Output Transfer Time
t
PRA
R
L
= 3 k
, C
L
= 2 500 pF,
Note 12
0.5
1
ms
* The TYP. values are for reference at T
A
= 25
C.
Note 9. Measuring point
0.8 V
2.0 V
+5 V
+3 V
3 V
SR+
SR
3 V
+3 V
5 V
t
PLH
t
PHL
V
CC
0 V
V
DO
+
V
DO
D
IN
D
OUT
PD4723
9
Note 10. Measuring point
0.6 V
2.4 V
+5 V
5 V
+5 V
5 V
High-impedance
t
DAZ
t
DZA
V
CC
0 V
V
DO
+
V
DO
STBY
D
OUT
Driver outputs are indefinite during transition time (t
DZA
).
Note 11. Measuring point
High-impedance
3.0 V
3.3 V
0 V
V
CC
V
DO
+
V
DO
D
OUT
+5 V
5 V
t
PRA
Driver outputs are indefinite during transition time (t
PRA
).
Note 12. Measuring point
High-impedance
4.5 V
5 V
0 V
V
CC
V
DO
+
V
DO
D
OUT
+5 V
5 V
t
PRA
Driver outputs are indefinite during transition time (t
PRA
).
PD4723
10
ELECTRICAL SPECIFICATIONS (RECEIVER)
(UNLESS OTHERWISE SPECIFIED, V
CC
= 3.0 to 5.5 V, T
A
= 40 to +85
C, C
1
to C
5
= 1
F)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Low-Level Output Voltage
V
OL
I
OUT
= 4 mA, STBY = H
0.4
V
High-Level Output Voltage
V
OH
I
OUT
= 4 mA , STBY = H
V
CC
0.4
V
Low-Level Output Voltage
V
OL2
I
OUT
= 4 mA, STBY = L
0.5
V
High-Level Output Voltage
V
OH2
I
OUT
= 4 mA, STBY = L
V
CC
0.5
V
Propagation Delay Time
t
PHL
R
IN
R
OUT
, C
L
= 150 pF
0.2
s
(STBY = H)
t
PLH
V
CC
= +3.0 V,
Note 13
Propagation Delay Time
t
PHL
R
IN
R
OUT
, C
L
= 150 pF
0.1
s
(STBY = L)
t
PLH
V
CC
= +3.0 V,
Note 14
Propagation Delay Time
t
PHA
EN
R
OUT
, C
L
= 150 pF
100
300
ns
(STBY = L)
t
PAH
V
CC
= +3.0 V,
Note 15
Input Resistor
R
I
3
5.5
7
k
Input Pin Open Voltage
V
IO
0.5
V
V
IH
V
CC
= +3.0 to +5.5 V
1.7
2.3
2.7
V
Input Threshold (STBY = H)
V
IL
V
CC
= +3.0 to +5.5 V
0.7
1.1
1.7
V
V
H
V
CC
= +3.0 to +5.5 V (Hysteresis width)
0.5
1.2
1.8
V
Input Threshold
V
IH
V
CC
= +3.0 to +5.5 V, R
IN1
, R
IN2
2.7
1.5
V
(STBY = L, EN = H)
V
IL
V
CC
= +3.0 to +5.5 V, R
IN1
, R
IN2
1.5
0.7
V
Standby Output Transfer Time
t
DAH
Note 16
0.2
1
s
Standby Output Transfer Time
t
DHA
V
CHA
= H (3 V mode)
Note 16
0.6
3
ms
V
CHA
= L (5 V mode)
Note 16
0.3
1
ms
Power-On Reset Release Time
t
PRA
V
CHA
= H (3 V mode)
Note 17
1
3
ms
V
CHA
= L (5 V mode)
Note 18
0.5
1
ms
* The TYP. values are for reference at T
A
= 25
C.
PD4723
11
Note 13. Measuring point
0.7 V
2.7 V
2.0 V
0.8 V
t
PLH
t
PHL
+3 V
0 V
3 V
V
OH
V
OL
R
IN
R
OUT
Note 14. Measuring point
+3 V
0 V
3 V
V
OH
V
OL
R
IN
R
OUT
2.0 V
0.8 V
0.7 V
2.7 V
t
PLH
t
PHL
Note 15. Measuring point
2.4 V
0.6 V
0.8 V
2.0 V
t
PHA
t
PAH
V
CC
0 V
V
OH
V
OL
EN
R
OUT
STBY = L
PD4723
12
Note 16. Measuring point
0.6 V
2.4 V
2.0 V
0.8 V
t
DAH
t
DHA
V
CC
0 V
V
OH
V
OL
STBY
R
OUT
Receiver outputs are indefinite during transition time (t
DHA
).
Note 17. Measuring point
0 V
V
OH
V
OL
3.3 V
V
CC
R
OUT
3.0 V
0.8 V
t
PRA
Receiver outputs are indefinite during reset release time (t
PRA
).
Note 18. Measuring point
0 V
V
OH
V
OL
5 V
V
CC
R
OUT
4.5 V
0.8 V
t
PRA
Receiver outputs are indefinite during reset release time (t
PRA
).
REFERENCE MATERIAL
IC PACKAGE MANUAL (C10943X)
NEC SEMICONDUCTOR DEVICE RELIABILITY/QUALITY (IEI-1212)
PD4723
13
RECOMMENDED SOLDERING CONDITIONS
The following conditions (see table below) must be met when soldering this product. Please consult with our sales
offices in case other soldering process is used, or in case soldering is done under different conditions.
TYPES OF SURFACE MOUNT DEVICE
For more details, refer to our document "SMT MANUAL" (C10535E).
PD4723GS-GJG
Soldering process
Infrared ray reflow
VPS
Wave soldering
Partial heating method
Soldring conditions
Peak package's surface temperature: 230
C or below,
Reflow time: 30 seconds or below (210
C or higher),
Number of reflow process: 2, Exposure limit*: None
Peak package's surface temperature: 215
C or below,
Reflow time: 40 seconds or below (200
C or higher),
Number of reflow process: 2,
Exposure limit*: None
Solder temperature: 260
C or below,
Flow time: 10 seconds or below,
Number of flow process: 1,
Exposure limit*: None
Terminal temperature: 300
C or below,
Flow time: 10 seconds or below,
Exposure limit*: None
Symbol
IR30-00-2
VP15-00-2
WS60-00-1
* Exposure limit before soldering after dry-pack package is opened.
Storage conditions: 25
C and relative humidity at 65 % or less.
Note Do not apply more than a single process at once, except for "Partial heating method".
PD4723
14
PACKAGE DRAWINGS
P30GS-65-300B-1
ITEM
MILLIMETERS
INCHES
NOTE
Each lead centerline is located within 0.10
mm (0.004 inch) of its true position (T.P.) at
maximum material condition.
10.11 MAX.
0.51 MAX.
0.65 (T.P.)
0.30
0.1250.075
2.0 MAX.
1.70.1
8.10.2
6.10.2
1.00.2
0.15
0.50.2
0.10
0.10
0.398 MAX.
0.020 MAX.
0.026 (T.P.)
0.012
0.0050.003
0.079 MAX.
0.0670.004
0.3190.008
0.2400.008
0.039
0.006
0.020
0.004
0.004
+0.008
0.009
A
B
C
D
E
F
G
H
I
J
K
L
M
N
+0.10
0.05
+0.10
0.05
+0.004
0.002
+0.004
0.003
+0.009
0.008
30 PIN PLASTIC SHRINK SOP (300 mil)
30
I
M
M
D
C
N
K
detail of lead end
E
F
G
B
H
L
J
16
A
1
15
3
+7 3
PD4723
15
[MEMO]
PD4723
No part of this document may be copied or reproduced in any form or by any means without the prior written
consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in
this document.
NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual property
rights of third parties by or arising from use of a device described herein or any other liability arising from use
of such device. No license, either express, implied or otherwise, is granted under any patents, copyrights or other
intellectual property rights of NEC Corporation or others.
While NEC Corporation has been making continuous effort to enhance the reliability of its semiconductor devices,
the possibility of defects cannot be eliminated entirely. To minimize risks of damage or injury to persons or
property arising from a defect in an NEC semiconductor device, customers must incorporate sufficient safety
measures in its design, such as redundancy, fire-containment, and anti-failure features.
NEC devices are classified into the following three quality grades:
"Standard", "Special", and "Specific". The Specific quality grade applies only to devices developed based on a
customer designated "quality assurance program" for a specific application. The recommended applications of
a device depend on its quality grade, as indicated below. Customers must check the quality grade of each device
before using it in a particular application.
Standard: Computers, office equipment, communications equipment, test and measurement equipment,
audio and visual equipment, home electronic appliances, machine tools, personal electronic
equipment and industrial robots
Special:
Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster
systems, anti-crime systems, safety equipment and medical equipment (not specifically designed
for life support)
Specific:
Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life
support systems or medical equipment for life support, etc.
The quality grade of NEC devices is "Standard" unless otherwise specified in NEC's Data Sheets or Data Books.
If customers intend to use NEC devices for applications other than those specified for Standard quality grade,
they should contact an NEC sales representative in advance.
Anti-radioactive design is not implemented in this product.
M4 96.5
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