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MC1488
Quad Line EIA-232D Driver
The MC1488 is a monolithic quad line driver designed to interface
data terminal equipment with data communications equipment in
conformance with the specifications of EIA Standard No. EIA−232D.
Features
•
Current Limited Output
•
•
•
•
•
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SOIC−14
D SUFFIX
CASE 751A
±
10 mA typical
Power−Off Source Impedance
300
W
minimum
Simple Slew Rate Control with External Capacitor
Flexible Operating Supply Range
Compatible with All ON Semiconductor DTL and TTL Logic
Families
Pb−Free Packages are Available
14
1
14
1
PDIP−14
P SUFFIX
CASE 646
14
SOEIAJ−14
M SUFFIX
CASE 965
1
PIN CONNECTIONS
V
EE
1
Input A 2
Output A 3
Input B1 4
Input B2 5
DTL Logic Input
Interconnecting
Cable
DTL Logic Output
Line Driver
MC1488
Interconnecting
Cable
Line Receiver
MC1489
14 V
CC
13 Input D1
12 Input D2
11 Output D
10 Input C1
9 Input C2
8 Output C
Output B 6
Gnd 7
Figure 1. Simplified Application
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 8 of this data sheet.
©
Semiconductor Components Industries, LLC, 2009
December, 2009
−
Rev. 9
1
Publication Order Number:
MC1488/D
MC1488
V
CC
14
8.2 k
Pins 4, 9, 12 or 2
Input
Input
Pins 5, 10, 13
6.2 k
70
300
Output
Pins 6, 8, 11 or 3
3.6 k
GND 7
10 k
7.0 k
V
EE
1
70
Figure 2. Circuit Schematic
(1/4 of Circuit Shown)
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2
MC1488
MAXIMUM RATINGS
(T
A
= + 25°C, unless otherwise noted.)
Rating
Power Supply Voltage
Input Voltage Range
Output Signal Voltage
Power Derating (Package Limitation, SO−14 and Plastic Dual−In−Line Package)
Derate above T
A
= + 25°C
Operating Ambient Temperature Range
Storage Temperature Range
Symbol
V
CC
V
EE
V
IR
V
O
P
D
1/R
qJA
T
A
T
stg
Value
+ 15
−
15
−
15
p
V
IR
p
7.0
±
15
1000
6.7
0 to + 75
−
65 to + 175
Unit
Vdc
Vdc
Vdc
mW
mW/°C
°C
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
ELECTRICAL CHARACTERISTICS
(V
CC
= + 9.0
±
1% Vdc, V
EE
=
−
9.0
±
1% Vdc, T
A
= 0 to 75°C, unless otherwise noted.)
Characteristic
Input Current
−
Low Logic State (V
IL
= 0)
Input Current
−
High Logic State (V
IH
= 5.0 V)
Output Voltage
−
High Logic State
(V
IL
= 0.8 Vdc, R
L
= 3.0 kW , V
CC
= + 9.0 Vdc, V
EE
=
−
9.0 Vdc)
(V
IL
= 0.8 Vdc, R
L
= 3.0 kW , V
CC
= + 13.2 Vdc, V
EE
=
−
13.2 Vdc)
Output Voltage
−
Low Logic State
(V
IH
= 1.9 Vdc, R
L
= 3.0 kW , V
CC
= + 9.0 Vdc, V
EE
=
−
9.0 Vdc)
(V
IH
= 1.9 Vdc, R
L
= 3.0 kW , V
CC
= + 13.2 Vdc, V
EE
=
−
13.2 Vdc)
Positive Output Short−Circuit Current, Note 1
Negative Output Short−Circuit Current, Note 1
Output Resistance (V
CC
= V
EE
= 0,
⎥
V
O
⎜
=
±
2.0 V)
Positive Supply Current (R
I
=
∞)
(V
IH
= 1.9 Vdc, V
CC
= + 9.0 Vdc)
(V
IL
= 0.8 Vdc, V
CC
= + 9.0 Vdc)
(V
IH
= 1.9 Vdc, V
CC
= + 12 Vdc)
(V
IL
= 0.8 Vdc, V
CC
= + 12 Vdc)
(V
IH
= 1.9 Vdc, V
CC
= + 15 Vdc)
(V
IL
= 0.8 Vdc, V
CC
= + 15 Vdc)
Negative Supply Current (R
L
=
∞)
(V
IH
= 1.9 Vdc, V
EE
=
−
9.0 Vdc)
(V
IL
= 0.8 Vdc, V
EE
=
−
9.0 Vdc)
(V
IH
= 1.9 Vdc, V
EE
=
−
12 Vdc)
(V
IL
= 0.8 Vdc, V
EE
=
−
12 Vdc)
(V
IH
= 1.9 Vdc, V
EE
=
−
15 Vdc)
(V
IL
= 0.8 Vdc, V
EE
=
−
15 Vdc)
Power Consumption
(V
CC
= 9.0 Vdc, V
EE
=
−
9.0 Vdc)
(V
CC
= 12 Vdc, V
EE
=
−
12 Vdc)
Symbol
I
IL
I
IH
V
OH
Min
−
−
+ 6.0
+ 9.0
−
6.0
−
9.0
+ 6.0
−
6.0
300
−
−
−
−
−
−
−
−
−
−
−
−
−
−
Typ
1.0
−
+ 7.0
+ 10.5
−
7.0
−
10.5
+ 10
−
10
−
+ 15
+ 4.5
+ 19
+ 5.5
−
−
−
13
−
−
18
−
−
−
−
−
Max
1.6
10
−
−
Vdc
−
−
+ 12
−
12
−
+ 20
+ 6.0
+ 25
+ 7.0
+ 34
+ 12
−
17
−
500
−
23
−
500
−
34
−
2.5
333
576
mA
mA
mA
mA
mA
mA
mW
mA
mA
Ohms
mA
Unit
mA
mA
Vdc
V
OL
I
OS +
I
OS
−
r
o
I
CC
I
EE
P
C
SWITCHING CHARACTERISTICS
(V
CC
= + 9.0
±
1% Vdc, V
EE
=
−
9.0
±
1% Vdc, T
A
= + 25°C.)
Propagation Delay Time (z
I
= 3.0 k and 15 pF)
Fall Time
(z
I
= 3.0 k and 15 pF)
(z
I
= 3.0 k and 15 pF)
Propagation Delay Time (z
I
= 3.0 k and 15 pF)
Rise Time
t
PLH
t
THL
t
PHL
t
TLH
−
−
−
−
275
45
110
55
350
75
175
100
ns
ns
ns
ns
1. Maximum Package Power Dissipation may be exceeded if all outputs are shorted simultaneously.
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3
MC1488
CHARACTERISTIC DEFINITIONS
9.0 V
14
-9.0 V
1
1.9 V
2
4
9
13
12
0.8 V
7
I
IL
I
IH
5.0 V
12
7
11
V
OH
V
OL
5
10
V
OL
4
V
OH
9
6
8
2
9.0 V
14
-9.0 V
1
3
3.0 k
Figure 3. Input Voltage
Figure 4. Output Current
V
CC
14
V
EE
14
7
1
1
2
3
6
I
OS
±
5
8
9
11
12
13
V
O
±
2.0 Vdc
±
6.6 mA Max
1.9 V
2
I
OS +
4
9
12
3
6
8
4
I
OS -
10
11
7
0.8 V
Figure 5. Output Short−Circuit Current
Figure 6. Output Resistance (Power Off)
V
CC
e
in
1.9 V
2
V
IH
4
7
9
V
IL
12
1
V
O
0.8 V
I
EE
50%
t
THL
t
THL
and t
TLH
Measured 10% to 90%
V
EE
t
TLH
e
in
I
CC
3.0 k
15 pF
V
O
14
3.0 V
1.5 V
t
PHL
t
PLH
0V
Figure 7. Power Supply Currents
Figure 8. Switching Response
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