DS14C88
QUAD CMOS Line Driver
General Description
The DS14C88, pin-for-pin compatible to the DS1488/
MC1488, is a quad line drivers designed to interface data
terminal equipment (DTE) with data circuit-terminating
equipment (DCE). This device translates standard TTL/
CMOS logic levels to levels conforming to EIA-232-D and
CCITT V.28 standards.
The device is fabricated in low threshold CMOS metal gate
technology. The device provides very low power consump-
tion compared to its bipolar equivalents: 500 A (DS14C88)
versus 25 mA (DS1488).
The DS14C88 simplifies designs by eliminating the need for
external slew rate control capacitors. Slew rate control in ac-
cordance with EIA-232D is provided on-chip, eliminating the
output capacitors.
Features
n
Meets EIA-232D and CCITT V.28 standards
n
LOW power consumption
n
Wide power supply range:
5V to
12V
n
Available in SOIC package
Connection Diagram
DS011105-1
Order Number DS14C88N, or DS14C88M
See NS Package Number N14A or M14A
May 1998
DS14C88
QUAD
CMOS
Line
Driver
1998 National Semiconductor Corporation
DS011105
www.national.com
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
V
+
Pin
+13V
V
-
Pin
-13V
Driver Input Voltage
(V
+
) +0.3V to GND
-0.3V
Driver Output Voltage
|(V
+
) - V
O
|
30V
|(V
-
) - V
O
|
30V
Continuous Power Dissipation
@
+25C (Note 2)
N Package
1513 mW
M Package
1063 mW
Junction Temperature
+150C
Lead Temperature
(Soldering 4 seconds)
+260C
Storage Temperature Range
-65C to +150C
This Product does not meet 2000V ESD rating. (Note 9)
Recommended Operating
Conditions
Min
Max
Units
V
+
Supply (GND = 0V)
+4.5 +12.6
V
V
-
Supply (GND = 0V)
-4.5 -12.6
V
Operating Free Air Temp.
(T
A
)
DS14C88
0
+75
C
Electrical Characteristics
Over Recommended Operating Conditions, unless otherwise specified
Symbol
Parameter
Conditions
Min
Typ
Max
Units
I
IL
Maximum Low Input
Current
V
IN
= GND
+10
A
I
IH
Maximum High Input
Current
V
IN
= V
+
-10
A
V
IL
Low Level Input Voltage
V
+
+7V, V
-
-7V
GND
0.8
V
V
+
<
+7V, V
-
>
-7V
GND
0.6
V
V
IH
High Level Input Voltage
2.0
V
+
V
V
OL
Low Level Output Level
V
IN
= V
IH
V
+
= 4.5V, V
-
= -4.5V
-4.0
-3.0
V
R
L
= 3 k
V
+
= 9V, V
-
= 9V
-8.0
-6.5
V
or 7 k
V
+
= 12V, V
-
= -12V
-10.5
-9.0
V
V
OH
High Level Output Level
V
IN
= V
IL
V
+
= 4.5V, V
-
= -4.5V
3.0
4.0
V
R
L
= 3 k
V
+
= 9V, V
-
= -9V
6.5
8.0
V
or 7 k
V
+
= 12V, V
-
= -12V
9.0
10.5
V
I
OS+
High Level Output Short
V
IN
= 0.8V, V
O
= GND
V
+
= +12V,
-45
mA
Circuit Current (Note 3)
V
-
= -12V
I
OS-
Low Level Output Short
V
IN
= 2.0V, V
O
= GND
+45
mA
Circuit Current (Note 3)
R
OUT
Output Resistance
V
+
= V
-
= GND = 0V
300
-2V
V
O
+2V (Note 4) (
Figure 1 )
I
CC+
Positive Supply Current
V
IN
=
V
ILmax
V
+
= 4.5V, V
-
= -4.5V
10
A
R
L
= OPEN
V
+
= 9V, V
-
= -9V
30
A
V
+
= 12V, V
-
= -12V
60
A
V
IN
=
V
IHmin
V
+
= 4.5V, V
-
= -4.5V
50
A
R
L
= OPEN
V
+
= 9V, V
-
= -9V
300
A
V
+
= 12V, V
-
= -12V
500
A
I
CC-
Negative Supply Current
V
IN
=
V
ILmax
V
+
= 4.5V, V
-
= -4.5V
-10
A
R
L
= OPEN
V
+
= 9V, V
-
= -9V
-10
A
V
+
= 12V, V
-
= -12V
-10
A
V
IN
=
V
IHmin
V
+
= 4.5V, V
-
= -4.5V
-30
A
R
L
= OPEN
V
+
= 9V, V
-
= -9V
-30
A
V
+
= 12V, V
-
= -12V
-60
A
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2
Switching Characteristics
(Notes 5, 6)
Over Recommended Operating Conditions, unless otheriwse specified (
Figures 2, 3)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t
PLH
Propagation Delay
V
+
= +4.5V, V
-
= -4.5V
1.5
6.0
s
Low to High
V
+
= +9.0V, V
-
= -9.0V
1.2
5.0
s
V
+
= +12V, V
-
= -12V
1.2
4.0
s
t
PHL
Propagation Delay
V
+
= +4.5V, V
-
= -4.5V
1.5
6.0
s
High to Low
V
+
= +9.0V, V
-
= -9.0V
1.35
5.0
s
V
+
= +12V, V
-
= -12V
1.3
4.0
s
t
r
Rise Time (Note 7)
0.2
1.0
s
t
f
Fall Time (Note 7)
0.2
1.0
s
tsk
Typical Propagation
V
+
= +4.5V, V
-
= -4.5V
250
ns
Delay Skew
V
+
= +9.0V, V
-
= -9.0V
200
ns
V
+
= +12V, V
-
= -12V
150
ns
S
R
Output Slew Rate
R
L
= 3 k
to 7 k
30
V/s
(Note 7)
C
L
= 15 pF to 2500 pF
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: Derate N Package 12.1 mW/C, and M Package 8.5 mW/C above +25C.
Note 3: I
OS+
and I
OS-
values are for one output at a time. If more than one output is shorted simultaneously, the device dissipation may be exceeded.
Note 4: Power supply (V
+
, V
-
) and GND pins are connected to ground for the Output Resistance Test (R
O
).
Note 5: AC input test waveforms for test purposes: t
r
= t
f
20 ns, V
IH
= 2V, V
IL
= 0.8V (0.6V at V
+
= 4.5V, V
-
= -4.5V)
Note 6: Input rise and rall times must not exceed 5 s.
Note 7: The output slew rate, rise time, and fall time are measured from the +3.0V to the -3.0V level on the output waveform.
Note 8: C
L
include jig and probe capacitances.
Note 9: ESD Rating (HBM, 1.5 k
, 100 pF)
1.0 kV.
Parameter Measure Information
DS011105-2
FIGURE 1. Output Resistance Test Circuit (Power-Off)
DS011105-3
FIGURE 2. Driver Load Circuit (Note 8)
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3
Parameter Measure Information
(Continued)
Typical Application Information
DS011105-4
FIGURE 3. Driver Switching Waveform
DS011105-5
FIGURE 4. EIA-232D Data Transmission
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4
Physical Dimensions
inches (millimeters) unless otherwise noted
Order Number DS14C88M or DS14C88TM
NS Package Number M14A
Order Number DS14C88N or DS14C88TN
NS Package Number N14A
www.national.com
5
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