MC1488
RS-232C QUAD LINE DRIVER
s
s
s
s
s
CURRENT LIMITED OUTPUT ±10mA TYP.
POWER-OFF SOURCE IMPEDANCE 300Ω
MIN.
SIMPLE SLEW RATE CONTROL WITH
EXTERNAL CAPACITOR
FLEXIBLE OPERATING SUPPLY RANGE
INPUTS ARE TTL AND µP COMPATIBLE
DIP
DESCRIPTION
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. RS232C.
SOP
LOGIC DIAGRAM
August 2003
1/12
MC1488
PIN CONFIGURATION
ORDERING CODES
DIP14
MC1488P
SO14
MC1488D1
SO14 (TAPE & REEL)
MC1488D1013TR
ABSOLUTE MAXIMUM RATINGS
Symbol
V
S
V
EE
V
IR
V
O
T
amb
T
stg
Power Supply Voltage
Power Supply Voltage
Input Voltage Range
Output Signal Voltage
Operating Ambient Temperature
Storage Temperature Range
Parameter
Value
15
-15
V
IR
= -15 to 7
±15
0 to 75
-65 to 150
Unit
V
V
V
V
°C
°C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
THERMAL DATA
Symbol
R
thj-amb
Parameter
Thermal Resistance Junction-ambient Max
Plastic DIP14
200
Ceramic DIP14
165
SO14
165
Unit
°C/W
2/12
MC1488
ELECTRICAL CHARACTERISTICS
V
S
= 9V
±
10%, V
EE
= -9V
±
10%, T
amb
= 0 to 75°C, unless otherwise specified.
Symbol
I
IL
I
IH
V
OH
V
OL
I
OS+
*
I
OS-
*
R
O
I
S
Parameter
Input Current (Fig 1)
Input Current (Fig 1)
Output Voltage (Fig. 2)
Output Voltage (Fig. 2)
Test Conditions
Low Logic State V
IL
= 0 V
High Logic State V
IH
= 5 V
V
S
= 9V, V
EE
= -9V
High Logic State
R
L
= 3K, V
IL
= 0.8 V V = 13V, V = -13V
S
EE
V
S
= -9V, V
EE
= 9V
Low Logic State
V
IH
= 1.9 V
V = -13.2V, V =13.2V
EE
S
Min.
Typ.
1
Max.
1.6
10
Unit
mA
µA
V
V
6
9
-6
-9
6
-6
7
10.5
-7
-10.5
10
-10
12
-12
Positive Output Short-
Circuit Current (Fig. 3)
Negative Output Short-
Circuit Current (Fig. 3)
Output Resistance (Fig. 4) V
S
= V
EE
= 0
Positive Supply Current
(R
I
=
∞)
(Fig. 5)
V
IH
= 1.9 V
V
IL
= 0.8 V
V
IH
= 1.9 V
V
IL
= 0.8 V
V
IH
= 1.9 V
V
IL
= 0.8 V
mA
mA
Ω
V
OL
= ± 2V
V
S
= 9 V
V
S
= 9 V
V
S
= 12 V
V
S
= 12 V
V
S
= 15 V
V
S
= 15 V
V
S
= -9 V
V
S
= -9 V
V
S
= -12 V
V
S
= -12 V
V
S
= -15 V
V
S
= -15 V
V
EE
= -9 V
V
EE
= -12 V
300
15
4.5
19
5.5
20
6
25
7
34
12
-13
-18
-17
-15
-23
-15
-34
-2.5
333
567
mA
I
EE
Negative Supply Current
(R
L
=
∞)
(Fig. 5)
V
IH
= 1.9 V
V
IL
= 0.8 V
V
IH
= 1.9 V
V
IL
= 0.8 V
V
IH
= 1.9 V
V
IL
= 0.8 V
mA
µA
mA
µA
mA
mW
P
C
Power Consumption
V
S
= 9 V
V
S
= 12 V
SWITCHING CHARACTERISTICS
V
S
= 9
±
1V, V
EE
= -9
±
1V, T
amb
= 25°C
Symbol
t
PHL
t
THL
t
PHL
t
THL
Parameter
Propagation Delay Time (Fig 6)
Fall Time (Fig 6)
Propagation Delay Time (Fig 6)
Fall Time (Fig 6)
Test Conditions
Z
I
= 3 KΩ and 15 pF
Z
I
= 3 KΩ and 15 pF
Z
I
= 3 KΩ and 15 pF
Z
I
= 3 KΩ and 15 pF
Min.
Typ.
275
45
110
55
Max.
350
75
175
100
Unit
ns
ns
ns
ns
* Maximum package power dissipation may be exceeded if all outputs are shorted simultaneously.
3/12
MC1488
TEST CIRCUITS
Figure 1 :
Input Current
Figure 2 :
Output Voltage
Figure 3 :
Output Short-Circuit Current
4/12
MC1488
Figure 4 :
Output Resistance (power off)
Figure 5 :
Power Supply Currents
Figure 6 :
Switching Response
5/12
京公网安备 11010802033920号
EEWORLD
