DS14C89A
Quad CMOS Receiver
General Description
The DS14C89A, pin-for-pin compatible to the DS1489A/
MC1489A, ia a quad receiver designed to interface data ter-
minal equipment (DTE) with data circuit-terminating equip-
ment (DCE). These devices translate levels conforming to
EIA-232E and CCITT V.28 standards to TTL/CMOS logic
levels.
The device is fabricated in low threshold CMOS metal gate
technology. The device provides very low power consump-
tion
compared
to
their
bipolar
equivalents:
900
A
(DS14C89A) versus 26 mA (DS1489A).
The DS14C89A provides on chip noise filtering which elimi-
nates the need for external response control filter capacitors.
When replacing the DS1489A with the DS14C89A, the re-
sponse control filter pins can be tied high, low, or not con-
nected.
Features
n
Meets EIA/TIA-232-E and CCITT V.28 Standards
n
Failsafe - Output High for Open Input
n
LOW Power consumption
n
On chip noise filter
n
Available in SOIC Package
Connection Diagram
DS011106-1
Order Number DS14C89AN, DS14C89AM,
See NS Package Number M14A, N14A
May 1998
DS14C89A
Quad
CMOS
Receiver
1998 National Semiconductor Corporation
DS011106
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.
V
CC
+6V
Input Voltage
-30V to +30V
Receiver Output Voltage
(V
CC
) +0.3V to
GND-0.3V
Junction Temperature
+150C
Continuous Power Dissipation
@
+25C (Note 2)
N Package
1513 mW
M Package
1063 mW
Lead Temp.
(Soldering 4 seconds)
+260C
Storage Temp. Range
-65C to +150C
ESD Rating
1.8 kV, Typically
2 kV
(HMB, 1.5 k
, 100 pF)
Recommended Operating
Conditions
Min
Max
Units
V
CC
(GND = 0V)
+4.5
+5.5
V
Operating Free Air Temp. (T
A
)
DS14C89A
0
+75
C
Electrical Characteristics
Over recommended operating conditions, unless otherwise specified
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
TH
Input High Threshold
1.3
2.7
V
V
TL
Input Low Threshold
0.5
1.9
V
V
HY
Typical Input
Hysteresis
1.0
V
I
IN
Input Current
V
IN
= +25V
V
CC
= +4.5V to +5.5V
3.6
8.3
mA
V
IN
= -25V
-3.6
-8.3
mA
V
IN
= +3V
0.43
1.0
mA
V
IN
= -3V
-0.43
-1.0
mA
V
IN
= +15V
V
CC
= 0V (Power-Off)
2.14
5.0
mA
V
IN
= -15V
(Note 4)
-2.14
-5.0
mA
V
IN
= +3V
0.43
1.0
mA
V
IN
= -3V
-0.43
-1.0
mA
V
OH
Output High Voltage
V
IN
= V
TL
(min)
I
OUT
= -3.2 mA
2.8
4.0
V
I
OUT
= -20A
3.5
4.7
V
V
OL
Output Low Voltage
V
IN
= V
TH
(max)
0.15
0.4
V
I
OUT
= +3.2
mA
I
CC
Supply Current
No Load, V
IN
= 2.7V or 0.5V
0.5
900
A
AC Electrical Characteristics
(Note 3)
Over recommended operating conditions, unless otherwise specified, C
I
= 50 pF
Symbol
Parameter
ConditIons
Min
Typ
Max
Units
t
PLH
Propagation Delay Low to High
Input Pulse Width
10 s
3.5
6.5
s
t
PHL
Propagation Delay High to Low
Input Pulse Width
10 s
3.2
6.5
s
t
SK
Typical Propagation Delay Skew
400
ns
t
r
Output Rise TIme
40
300
ns
t
f
Output Fall Time
40
300
ns
t
nw
Pulse Width assumed to be Noise
1.0
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: Derate N Package 12.1 mW/C, and M Package 8.5 mW/C above +25C.
Note 3: AC input waveforms for test purposes: t
r
= t
f
= 200 ns, V
IH
= +3V, V
L
= -3V, f = 20 KHz.
Note 4: Under the power-off supply conditions it is assumed that the power supply potential drops to zero (0V) and is replaced by a low impedance or short circuit
to ground.
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2
Parameter Measurement Information
Typical Application Information
DS011106-2
FIGURE 1. Receiver Load Circuit
DS011106-3
FIGURE 2. Receiver Switching Waveform (Note 3)
DS011106-4
FIGURE 3. Receiver Block Diagram
DS011106-5
FIGURE 4. EIA-232D Data Transmission
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