ST MC1489, MC1489A User Manual
■ INPUT RESISTANCE –3kto 7kΩ
■ INPUT SIGNAL RANGE – ± 30V
■ INPUT THRESHOLD HYSTERESIS BUILT-IN
■ RESPONSE CON TROL:
a) LOGIC T HRE SHOLD SHIFTING
b) INPUT NOISE FILTERING
DESCRIPTION
The MC1489 monolithic quad line receivers are
designed to interface data terminal equipment
with data communications equipment in
conformance with the specifications of EIA
Standard N° RS232C.
MC1489
MC1489A
QUAD LINE RECEIVERS
DIP
SCHEMATIC DIAGRAM
SOP
1/13September 2003
MC1489/MC1489A
PIN CONFIGURATION (top view)
ORDERING CODES
DIP14 SO14 SO14 (TAPE & REEL)
MC1489P MC1489D1 MC1489D1013TR
MC1489AP MC1489AD1013TR
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
V
I
OL
P
TOT
T
amb
T
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
Power Supply Voltage
S
Input Voltage Range
I
Output Load Current
Power Dissipation
Operating Ambient Temperature
Storage Temperature Range
stg
10 V
±30 V
20 mA
1W
0to75 °C
-65 to 150 °C
2/13
MC1489/MC1489A
ELECTRICAL CHARACTERISTICS
Response Control Pin in Open; V
Symbol Parameter Test Conditions Min. Typ. Max. Unit
I
Positive Input Current VIH=25V 3.6 8.3 mA
IH
Negative Input Current VIL= - 25 V -3.6 -8.3 mA
I
IL
Input Turn-On Threshold
V
IH
Voltage
Input Turn-Off Threshold
V
IL
Voltage
V
V
Output Voltage High VIH=0.75V,IL=-0.5mA 2.5 4 5 V
OH
Output Voltage Low VIL=3V, IL= 10 mA 0.2 0.45 V
OL
Output Short Circuit
I
OS
Current
I
Power Supply Current All gates "ON", IO=0mA,VIH= 5 V 16 26 mA
S
Power Consumption VIH= 5 V 80 130 mW
P
C
SWITCHING CHARACTERISTICS
=5V,T
V
S
Symbol Parameter Test Conditions Min. Typ. Max. Unit
t
PLH
t
THL
t
PHL
t
THL
= 25°C, (see Figure 1)
amb
Propagation Delay Time RL= 3.9 KΩ 25 85 ns
Rise Time RL= 3.9 KΩ 120 175 ns
Propagation Delay Time RL=390Ω 25 50 ns
Fall Time RL=390Ω 10 20 ns
=5V,T
S
= 3 V 0.43
V
IH
= - 3 V -0.43
V
IL
T
= 25°C, V
amb
I
=10mA
L
T
= 25°C, V
amb
= 0.5 mA Input Open Circuit 2.5 4 5
I
L
= 0 t o 75°C, unless otherwise spec if ied.
amb
≤ 0.45 V
OL
for MC1489 1 1.5 V
for MC1489A 1.75 1.95 2.25
≥ 2.5VI
OL
=-0.5mA
L
0.75 1.25 V
-3 -4 mA
TEST CIRCUITS
Figure1 : Switching Response
3/13
MC1489/MC1489A
Figure2 : Response Control Node
Figure3 : Input Current
C: capacitor is for noise filtering
Figure4 : Output Short-Circuit Current
4/13
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