TECHNICAL DATA
1
I N T E G R A L
IN1488
Quadruple Line Drivers
The IN1488 is a monolithic quadruple line driver designed to interface
data terminal equipment with data communication equipment in
conformance with the specifications of EIA standard RS-232C.
Meets specifications of EIA RS-232C
Current limited output 10 mA Typical
Power-off output impedance 300 Min
Simple slew rate control by load capacitor
Flexible operating supply range
Input are TTL and DTL circuits compatible
LOGIC DIAGRAM
PIN 1 = V
S
PIN 14 = V
EE
PIN 7 = GND
N SUFFIX
PLASTIC
D SUFFIX
SOIC
1
14
1
14
ORDERING INFORMATION
IN1488N Plastic
IN1488D SOIC
IZ1488 Chip
T
A
= 0
to 70 C for all packages.
PIN ASSIGNMENT
UNCTION TAFBLE
Inputs
Output
A
B
Y
H
H
L
L
X
H
X
L
H
X - don't care
Vs
V
EE
IN1488
2
I N T E G R A L
MAXIMUM RATINGS
*
Symbol
Parameter
Value
Unit
V
S
Supply Voltage
15
V
V
EE
Supply Voltage
- 15
V
V
I
Input Voltage Range
- 15 to 7
V
V
O
Output Voltage Range
-15 to 15
V
P
T
Continuous Total Dissipation at (or below) 25
C
1
W
Tstg
Storage Temperature Range
-65 to 150
C
* Maximum Ratings are those values beyond damage to the device may occur. Functional operating shoud be
restricted to the Recommended Operating Conditions.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
Max
Unit
V
S
Supply Voltage
15
V
V
EE
Supply Voltage
-15
V
V
IL
Low Level Input Voltage
1.9
V
V
IH
High Level Input Voltage
0.8
V
T
A
Operating Temperature, All Package Types
-10
70
C
IN1488
3
I N T E G R A L
DC ELECTRICAL CHARACTERISTICS
( T
A
=-10
0
C to 70
0
C)
Symbol
Parameter
Test Conditions
Guaranteed Limits
Unit
Min
Max
V
OH
High-Level Output
Voltage
V
IL
=0.8V
V
S
=9V
V
EE
=-9V
6
V
R
L
=3k
V
S
=13.2V
V
EE
=13.2V
9
V
OL
Low-Level Output
Voltage
V
IH
=1.9V
V
S
=9V
V
EE
=-9V
-6
V
R
L
=3k
V
S
=13.2V
V
EE
=-13.2V
-9
I
IH
High-Level Input
Current
V
I
=5V
V
S
=9V, V
EE
=-9V
10
A
I
IL
Low-Level Input
Current
V
I
=0V
V
S
=9V, V
EE
=-9V
-1.6
mA
I
OS
*
Short-Circuit Output
Current at High Level
V
I
=0.8V
V
O
=0V
V
S
=9V, V
EE
=-9V
-6
-12
mA
I
OS
*
Short-Circuit Output
Current at Low Level
V
I
=1.9V
V
O
=0V
V
S
=9V, V
EE
=-9V
6
12
mA
r
O
Output Resistance,
power off
V
S
=0V, V
EE
=0V
V
O
=-3V or 3V
300
V
S
=9V,
All inputs at 1.9V
20
All inputs at 0.8V
6
I
OC
+
Supply Current
V
S
=12V
All inputs at 1.9V
25
mA
from V
S
All inputs at 0.8V
7
V
S
=15V
All inputs at 1.9V
34
T
A
=25
C
All inputs at 0.8V
12
V
EE
=-9V,
All inputs at 1.9V
-17
All inputs at 0.8V
-0.015
I
OC
-
Supply Current
V
EE
=-12V
All inputs at 1.9V
-23
mA
from V
EE
All inputs at 0.8V
-0.015
V
EE
=-15V
All inputs at 1.9V
-34
T
A
=25
C
All inputs at 0.8V
-2.5
* Not more than one output should be shorted at a time
IN1488
4
I N T E G R A L
AC ELECTRICAL CHARACTERISTICS
(V
S
= 9V, V
EE
= -9V,T
A
= 25
C, t
r
= t
f
= 5ns)
Symbol
Parameter
Test Condition
Guaranteed Limits
Unit
Min
Max
t
PLH
Propagation Delay Time, Low-to-
High-Level Output
350
ns
t
PHL
Propagation Delay Time, High-to-
Low-Level Output
R
L
=3k
, C
L
=15pF
See Figure 1
175
ns
t
TLH
Transition Time, Low-to-High-
Level Output *
100
ns
t
THL
Transition Time, High-to-Low-
Level Output *
75
ns
* Measured between 10% and 90% points of output waveform.
Figure 1. Switching Waveforms
* Includes all probe and jig capacitance
Figure 2. Test Circuit
IN1488
5
I N T E G R A L
CHIP PAD DIAGRAM IZ1488
Pad size 0.140 x 0.140 mm (Pad size is given as per metalization layer)
Thickness of chip 0,46
0,02 mm
PAD LOCATION
Pad No
Symbol
X
Y
01
Vs
0.140
0.420
02
B1
0.150
0.140
03
Y1
0.540
0.140
04
A2
0.956
0.140
05
B2
1.370
0.140
06
Y2
1.370
0.410
07
GND
1.370
0.680
08
Y3
1.370
0.950
09
A3
1.370
1.220
10
B3
0.956
1.220
11
Y4
0.540
1.220
12
A4
0.270
1.220
13
B4
0.140
0.940
14
V
EE
0.140
0.680
1.7
09
08
12
11
10
07
06
05
04
03
02
14
13
1.
5
(0,0)
Chip marking
(x=0.680, y=1.220)
19
01
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