■ CURRENTLIMITEDOUTPUT±10mATYP.
■ POWER-OFF SOURCE IMPEDANCE 300Ω
MIN.
■ SIMPLESLEWRATE CONTROL WITH
EXTERNALCAPACITOR
■ FLEXIBLEOPERATINGSUPPLYRANGE
■ INPUTSARETTLANDµPCOMPATIBLE
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
StandardNo. RS232C.
MC1488
RS232C QUAD LINE DRIVER
P
DIP14
(Plastic Package)
(Plastic Micropackage)
D
SO14
(topview)
ORDERCODES:
MC1488P (PlasticDIP)
MC1488D(SO14)
LOGICDIAGRAMPIN CONNECTIONS
March 2000
1/9
MC1488
ABSOLUTEMAXIMUM RATINGS
Symb ol Parameter Test C o n dit io ns Unit
Power Supply Voltage 15 V
V
S
V
Power Supply Voltage –15 V
EE
V
Input Voltage Range –15≤V
IR
V
Output Signal Voltage
O
T
Operating Ambient Temperature 0 to 75
amb
T
Storage Temperature Range –65 to 150
stg
THERMALDATA
Symb o l Parameter Plasti c DI P14 Cera mi c D I P 1 4 SO14
R
th j-amb
Thermal Resistance Junction-ambientMax. 200oC/W 165oC/W 165oC/W
ELECTRICAL CHARACTERISTICS
= 9 ±10%V,VEE=–9±10%V ,T
V
S
Symbol Parameter Test Conditions Min. Typ. M ax. Un it F ig.
Input Current Low Logic StateVIL= 0V 1 1.6 mA 1
I
IL
I
Input Current High Logic StateVIH=5V 10µA1
IH
= 0to75oC, unlessotherwise specified
amb
7V
≤
IR
15 V
±
o
C
o
C
V
Output Voltage
OH
V
Output Voltage Low Logic State
OL
+
I
* Positive Output Short-circuit
OS
Current 6 10 12
–
I
* Negative Output Short-circuit
OS
Current -6 -10 -12
R
Output Resistance
O
I
Positive Supply Current
s
I
EE
P
c
=∞)
(R
i
Negative Supply Current
=∞)
(R
L
Power Consumption VS=9V VEE= -9V
High Logic StateR
=0.8V,VS= 9V, VEE=–9V
V
IL
=0.8V,VS= 13.2V, VEE= –13.2V
V
IL
= 1.9V, VEE= –9V, VS=9V
V
IH
= 1.9V, VEE= –13.2V, VS=13.2V
V
IH
V
S=VEE
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
V
S
=0Vol=±2V
=1.9V Vs=9V
=0.8V Vs=9V
=1.9V Vs= 12V
=0.8V Vs=12V
=1.9V Vs= 15V
=0.8V Vs=15V
=1.9V Vs= -9V
=0.8V Vs=-9V
=1.9V Vs= -12V
=0.8V Vs=-12V
=1.9V Vs= -15V
=0.8V Vs=-15V
=12V VEE= -12V
L
=3k
Ω
6
9710.5
-6-9-7
-10.5
300
15
4.5
19
5.5
-13
-18
20
6
25
7
34
12
-17
-15
-23
-15
-34
-2.5
333
567
V
V
mA 3
mA 3
Ω
mA 5
mA
A
µ
mA
A
µ
mA
mA
mW
2
2
2
2
4
5
SWITCHING CHARACTERISTICS
=
V
S
±9 ±1V,V
EE
=–
9±1%V,T
amb
o
=
C
25
Symbol Parameter Test Conditions Min. T yp. Max. Uni t Fig.
t
Propagation Delay Time
PHL
Fall Time
t
THL
Propagation Delay Time
t
PHL
Rise Time
t
THL
* Maximum package power dissipation may be exceeded if all outputs are shorted simultaneously.
=3kΩand 15pF
Z
i
=3kΩand 15pF
Z
i
=3kΩand 15pF
Z
i
=3kΩand 15pF
Z
i
275 350 ns 6
45 75 ns 6
110 175 ns 6
55 100 ns 6
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TESTCIRCUITS
MC1488
Figure1 : Input Current
Figure3 : OutputShort-Circuit Current
Figure2 : Output Voltage
Figure4 : Output Resistance (poweroff)
Figure5 : Power SupplyCurrents
Figure6 : SwitchingResponse
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