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DS14C232 Low Power +5V Powered TIA/EIA-232 Dual Driver/Receiver
February 1996
DS14C232
Low Power
a
5V Powered TIA/EIA-232 Dual
Driver/Receiver
General Description
The DS14C232 is a low power dual driver/receiver featuring
an onboard DC to DC converter, eliminating the need for
g
12V power supplies. The device only requires a
a
5V
power supply. I
CC
is specified at 3.0 mA maximum, making
the device ideal for battery and power conscious applica-
tions. The drivers' slew rate is set internally and the receiv-
ers feature internal noise filtering, eliminating the need for
external slew rate and filter capacitors. The device is de-
signed to interface data terminal equipment (DTE) with data
circuit-terminating equipment (DCE). The driver inputs and
receiver outputs are TTL and CMOS compatible.
DS14C232C driver outputs and receiver inputs meet
TIA/EIA-232-E (RS-232) and CCITT V.28 standards.
Features
Y
Pin compatible with industry standard MAX232, LT1081,
ICL232 and TSC232
Y
Single
a
5V power supply
Y
Low powerÐI
CC
3.0 mA maximum
Y
DS14C232C meets TIA/EIA-232-E (RS-232) and CCITT
V.28 standards
Y
CMOS technology
Y
Receiver Noise Filter
Y
Package efficiencyÐ2 drivers and 2 receivers
Y
Available in Plastic DIP, Narrow and Wide SOIC
packages
Y
TIA/EIA-232 compatible extended temperature range
options:
DS14C232T
b
40
§
Cto
a
85
§
C
DS14C232
b
55
§
Cto
a
125
§
C
Connection Diagrams
Functional Diagram
TL/F/10744±1
Order Number DS14C232CN, DS14C232TN,
DS14C232CM, DS14C232TM,
DS14C232CWM or DS14C232TWM
See NS Package Number N16A, M16A or M16B
TL/F/10744±2
C
1996 National Semiconductor Corporation
TL/F/10744
RRD-B30M36/Printed in U. S. A.
http://www.national.com
COMMERCIAL
Absolute Maximum Ratings
(Note 1)
Specifications for the 883 version of this product are
listed separately on the following pages.
Supply Voltage, V
CC
b
0.3V to 6V
V
a
Pin (V
CC
b
0.3)V to
a
14V
V
b
Pin
a
0.3V to
b
14V
Driver Input Voltage
b
0.3V to (V
CC
a
0.3V)
Driver Output Voltage (V
a
a
0.3V) to (V
b
b
0.3V)
Receiver Input Voltage
g
25V
Receiver Output Voltage
b
0.3V to (V
CC
a
0.3V)
Junction Temperature
a
150
§
C
Maximum Package Power Dissipation
@
25
§
C (Note 6)
N Package
Short Circuit Duration, D
OUT
Continuous
Storage Temp. Range
b
65
§
Cto
a
150
§
C
Lead Temp. (Soldering, 4 sec.)
a
260
§
C
ESD Rating (HBM, 1.5 k
X
, 100 pF)
t
2.5 kV
Recommended Operating
Conditions
Min Max Units
Supply Voltage, V
CC
4.5
5.5
V
Operating Free Air Temp. (T
A
)
DS14C232C
0
a
70
§
C
1698 mW
DS14C232T
b
40
a
85
§
C
M Package
1156 mW
WM Package
1376 mW
Electrical Characteristics
Over recommended operating conditions, unless otherwise specified (Note 2)
Symbol
Parameter
Conditions
Min Typ Max Units
DC TO DC CONVERTER CHARACTERISTICS
V
a
Positive Power Supply
R
L
e
3k
X
,C1±C4
e
1.0
m
F, D
IN
e
0.8V
9.0
V
V
b
Negative Power Supply
R
L
e
3k
X
,C1±C4
e
1.0
m
F, D
IN
e
2.0V
b
8.5
V
I
CC
Supply (V
CC
) Current
No Load
1.0 3.0 mA
DRIVER CHARACTERISTICS
V
IH
High Level Input Voltage
2
V
CC
V
V
IL
Low Level Input Voltage
GND
0.8 V
I
IH
High Level Input Current
V
IN
t
2.0V
b
10
a
10
m
A
I
IL
Low Level Input Current
V
IN
s
0.8V
b
10
a
10
m
A
V
OH
High Level Output Voltage R
L
e
3k
X
5.0 8.0
V
V
OL
Low Level Output Voltage
R
L
e
3k
X
b
7.0
b
5.0 V
I
OS
a
Output High Short Circuit Current V
O
e
0V, V
IN
e
0.8V
(Note 3)
b
30
b
15
b
5.0 mA
I
OS
b
Output Low Short Circuit Current V
O
e
0V, V
IN
e
2V
5.0 11 30 mA
R
O
Output Resistance
b
2V
s
V
O
s
a
2V,
300
X
RECEIVER CHARACTERISTICS
V
TH
Input High Threshold Voltage V
CC
e
5.0V
1.9 2.4 V
V
CC
e
5.0V
g
10%
1.9 2.6 V
V
TL
Input Low Threshold Voltage
0.8 1.5
V
V
HY
Hysteresis
T
A
e
0
§
Cto
a
85
§
C
0.2 0.4 1.0 V
T
A
eb
40
§
Cto0
§
C
0.1 0.4 1.0 V
R
IN
Input Resistance
T
A
e
0
§
Cto
a
85
§
C
b
15V
s
V
IN
s a
15V
3.0 4.7 7.0 k
X
T
A
eb
40
§
Cto0
§
C (Note 8)
3.0 4.7 10 k
X
I
IN
Input Current
V
IN
ea
15V
0
§
Cto
a
85
§
C
a
2.14
a
3.75
a
5.0 mA
V
IN
ea
3V
a
0.43
a
0.64
a
1.0 mA
V
IN
eb
3V
b
1.0
b
0.64
b
0.43 mA
V
IN
eb
15V
b
5.0
b
3.75
b
2.14 mA
V
OH
High Level Output Voltage
V
IN
eb
3V, I
O
eb
3.2 mA
3.5 4.5
V
V
IN
eb
3V, I
O
eb
20
m
A
4.0 4.9
V
V
OL
Low Level Output Voltage
V
IN
ea
3V, I
O
ea
3.2 mA
0.15 0.4 V
http://www.national.com
2
V
CC
e
0V
e
GND
COMMERCIAL
Switching Characteristics
Over recommended operating conditions, unless otherwise specified.
Symbol
Parameter
Conditions
Min Typ Max Units
DRIVER CHARACTERISTICS
t
PLH
Propagation Delay Low to High
Figure1
and
1.0 4.0
m
s
R
L
e
3k
X
t
PHL
Propagation Delay High to Low
1.0 4.0
m
s
C
L
e
50 pF
Figure2
t
SK
Skew
l
t
PLH
b
t
PHL
l
0.1 1.0
m
s
SR1 Output Slew Rate
R
L
e
3k
X
to7k
X
,C
L
e
50 pF
(Note 7)
4.0
30 V/
m
s
SR2 Output Slew Rate
R
L
e
3k
X
,C
L
e
2500 pF
4.5
V/
m
s
RECEIVER CHARACTERISTICS
t
PLH
Propagation Delay Low to High
Input Pulse Width
l
10
m
s
2.9 6.5
m
s
C
L
e
50 pF
t
PHL
Propagation Delay High to Low
2.5 6.5
m
s
(Figures3and4)
0.4 2.0
m
s
t
nw
Noise Pulse Width Rejected (Figures3and4)
T
A
e
0
§
Cto
a
85
§
C 0.7 0.5
m
s
T
A
eb
40
§
Cto0
§
C 0.7 0.3
m
s
Note 1: ``Absolute Maximum Ratings'' are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices
should be operated at these limits. The tables of ``Electrical Characteristics'' specify conditions for device operation.
Note 2: Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground unless otherwise
specified.
Note 3: I
OS
a
and I
OS
b
values are for one output at a time. If more than one output is shorted simultaneously, the device power dissipation may be exceeded.
Note 4: Receiver AC input waveform for test purposes: t
r
e
t
f
e
200 ns, V
IH
e
3V, V
IL
eb
3V, f
e
30 kHz.
Note 5: All typicals are given for V
CC
e
5.0V.
Note 6: Ratings apply to ambient temperature at
a
25
§
C. Above this temperature derate: N Package 15.6 mW/
§
C, M Package 10.6 mW/
§
C and WM Package
12.7 mW/
§
C.
Note 7: Slew rate is defined as
D
V/
D
t, measured between
g
3V level.
Note 8: TIA/EIA-232-E receiver input impedance maximum limit is 7 k
X
.
Skew
l
t
PLH
b
t
PHL
l
3
http://www.national.com
t
SK
MIL-STD 883C
Absolute Maximum Ratings
(Note 1)
The 883 specifications are written to reflect the Rel
Electrical Test Specifications (RETS) established by Na-
tional Semiconductor for this product. For a copy of the
RETS please contact your local National Semiconduc-
tor sales office or distributor.
Supply Voltage, V
CC
Short Circuit Duration, D
OUT
Continuous
Storage Temp. Range
b
65
§
Cto
a
150
§
C
Lead Temp. (Soldering, 4 sec.)
a
260
§
C
ESD Rating (HMB, 1.5 k
X
, 100 pF)
t
2.5 kV
b
0.3V to 6V
Recommended Operating
Conditions
V
a
Pin
(V
CC
b
0.3)V to
a
14V
V
b
Pin
a
0.3V to
b
14V
Min Max Units
Driver Input Voltage
b
0.3V to (V
CC
a
0.3V)
Supply Voltage, V
CC
4.5
5.5
V
Driver Output Voltage
(V
a
a
0.3V) to (V
b
b
0.3V)
Operating Free Air Temp. (T
A
)
DS14C232
g
25V
Receiver Output Voltage
b
0.3V to (V
CC
a
0.3V)
Maximum Package Power Dissipation
@
25
§
C (Note 8)
J Package
b
55
a
125
§
C
1520 mW
E Package
2000 mW
Electrical Characteristics
Over recommended operating conditions, unless otherwise specified (Note 2)
Symbol
Parameter
Conditions
Min Max Units
DEVICE CHARACTERISTICS (C1±C4
e
1.0
m
F)
I
CC
Supply (V
CC
) Current
No Load
8.0 mA
DRIVER CHARACTERISTICS
V
IH
High Level Input Voltage
2
V
V
IL
Low Level Input Voltage
0.8
V
I
IH
High Level Input Current
V
IN
t
2.0V
100
m
A
I
IL
Low Level Input Current
V
IN
e
0V
100
m
A
V
OH
High Level Output Voltage
R
L
e
3k
X
5.0
V
V
OL
Low Level Output Voltage
R
L
e
3k
X
b
5.0 V
I
OS
a
Output High Short Circuit Current V
O
e
0V
(Note 3)
b
25
mA
I
OS
b
Output Low Short Circuit Current V
O
e
0V
25 mA
R
O
Output Resistance
b
2V
s
V
O
s a
2V, T
A
e
25
§
C,
300
X
V
CC
e
0V
e
GND
RECEIVER CHARACTERISTICS (C1±C4
e
1.0
m
F)
V
TH
Input High Threshold Voltage
3.0
V
V
TL
Input Low Threshold Voltage
0.2
V
V
HY
Hysteresis
T
A
e
25
§
C,
a
125
§
C
0.1
1.0
V
T
A
eb
55
§
C
0.05 1.0
V
R
IN
Input Resistance
V
IN
e
g
3V and
g
15V, T
A
e
25
§
C
3.0
7.0
k
X
V
OH
High Level Output Voltage
I
O
eb
3.2 mA
3.5
V
I
O
eb
20
m
A
4.0
V
V
OL
Low Level Output Voltage
I
O
ea
3.2 mA
0.4
V
http://www.national.com
4
Receiver Input Voltage
MIL-STD-883C
Switching Characteristics
Over recommended operating conditions, unless otherwise specified.
Symbol
Parameter
Conditions
Min Max Units
DRIVER CHARACTERISTICS (C1±C4
e
1.0
m
F)
t
PLH
Propagation Delay Low to High
R
L
e
3k
X
,C
L
e
50 pF
Figures1and2
4.0
m
s
t
PHL
Propagation Delay High to Low
4.0
m
s
t
SK
Skew
l
t
PLH
b
t
PHL
l
1.0
m
s
SR1 Output Slew Rate
R
L
e
3k
X
to7k
X
,C
L
e
2500 pF (Note 7)
1.5 30 V/
m
s
RECEIVER CHARACTERISTICS (C1±C4
e
1.0
m
F)
t
PLH
Propagation Delay Low to High
Input Pulse Width
l
10
m
s
8.0
m
s
C
L
e
50 pF
t
PHL
Propagation Delay High to Low
8.0
m
s
(Figures3and4)
t
SK
Skew
l
t
PLH
b
t
PHL
l
2.0
m
s
Note 8: Ratings apply to ambient temperature at
a
25
§
C. Above this temperature derate: J Package 12.2 mW/
§
C and E Package 13.3 mW/
§
C.
Connection Diagrams
(Continued)
J Package
16-Lead Dual-In-line Package
E Package
20-Lead Ceramic Leadless Chip Carrier
TL/F/10744±10
TL/F/10744±1
For Complete Military 883 Specifications
See RETS Data Sheet.
Order Number DS14C232J/883 or DS14C232E/883
See NS Package Number E20A or J16A
5
http://www.national.com
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