SGS Thomson Microelectronics L9703D, L9703 Datasheet
OCTAL GROUND CONTACT MONITORING CIRCUIT
.OPERATING DC SUPPLY VOLTAGE RANGE
5V TO 25V
.SUPPLYOVERVOLTAGEPULSEUP TO 40V
.VERY LOW STANDBY QUIESCENT CUR-
RENT0.2mA
.INTERNAL CLAMPING DIODESATCONTACT
INPUTS TO V
ANDGND
S
.INPUTPULSECURRENT CAPABILITYUPTO
+ 50mA ;– 75mA
.NOMINALCONTACTCURRENT OF10mADE-
FINEDBYEXTERNALCONTACT SERIESRESISTORS R
I N1–8
.CONTACT STATUS MONITORING BY COM-
PARING THE RESISTANCE AT CONTACT
SENSEINPUTSWITHTHEINTERNALREFERENCERESISTOR VALUE
.HIGHIMMUNITYDUETORESISTANCECOM-
PARISONWITH HYSTERESIS
L9703
DIP-20
SO-20L
ORDERINGNUMBERS : L9703 (DIP-20)
L9703D (SO-20L)
DESCRIPTION
TheL9703isa bipolarmonolithicintegratedcircuitfor monitoringthe statusofupto eightcontactsconnectedto GND.
BLOCK DIAGRAM
It containseightcontactsenseinputsandeight
microcomputercompatiblethree-stateoutputs.
March 1992
1/9
L9703
PIN CONNECTION (top view)
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Test Conditions Unit
V
V
I
IN DC
I
INP
I
V
CC
O
EN
Transient Supply Voltage (t ≤ 1s) +40 V
S
Logic Supply Voltage 7 V
Input DC Current ±40 mA
Input DC Pulse
(test pulse specification: 0 < tP < 2ms, f ≤ 0.2Hz, n = 25000)
50
-75
Output Current Internally Limited
Enable Input Voltage VCC+0.3
-0.3
T
P
O
stg,TJ
Power Dissipation at T
amb
=80°C
DIP20
SO20
875
420
Storage and Junction Temperature Range -55 to 150 °C
THERMAL DATA
Symbol Parameter DIP20 SO20 Unit
R
th j-amb
Thermal Resistance Junction to Ambient MAX. 80 165 °C/W
mA
mA
V
V
mW
mW
2/9
L9703
ELECTRICALCHARACTERISTICS (5V ≤ VS≤ 25V; -40°C ≤ Tj≤ 125°C;4.75V ≤ VCC≤ 5.25Vunless oth-
erwise specified;thecurrentsflowinginthearrowdirectionareassumedpositiveas markedintheapplication
circuitdiagram,fig. 1).
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
ENL
V
ENH
V
ENhyst
I
EN
V
OUTH
V
OUTL
I
OUT TS
V
IN
V
IN
I
OUT
I
OUT
R
IL
R
IH
R
IL
R
IH
I
QC
I
QS
I
QC
I
QS
t
do
t
dTS
Enable Input Voltage LOW
(device activated)
Enable Input Voltage HIGH 2.4 V
Enable Input Hysteresis 200 420 800 mV
Enable Input Current 2.4V < VEN<V
0V < V
EN
Output Voltage HIGH 0 < I
Output Voltage LOW I
Output TRISTATE Current 0 < V
OUT
= -1mA 0.05 0.2 0.4 V
OUT
OUT<VCC
CC
< 0.8V -5 -1 µA
< 100µA 4.0 VCC-0.1 V
Input Voltage (device active) EN = LOW
=1kΩ
R
Input Clamped Voltage
(device disabled)
IN
EN = HIGH
= 30mA
I
IN
= -30mA
I
IN
-2 VS-1.5 VS- 0.4 V
V
S
V
+0.3-2VS+1-1VS+2
S
Output Current OUT = HIGH
=0
V
OUT
Output Current OUT = LOW
VOUT = 5.5V
Input Resistor (note 1)
LOW Threshold
Input Resistor (note 1)
5V < VS< 16V
GND
≤ 0.1V
∆ V
S
1.8 4 KΩ
5.3 20 KΩ
HIGH Threshold
Input Resistor
0.65 0.75 0.85
Threshold Ratio (note1)
Quiescent Current EN = HIGH (t
5V < V
-40°C ≤ T
< 16V
S
ENH
≤ 100°C
j
≥ 80µs)
0.12 0.16 mA
Quiescent Current All Inputs Open 0.04 mA
All Inputs Closed 0.24 mA
Quiescent Current EN = LOW 6
Delay Time/Output
(EN LOW to output data ready)
Delay Time/Tristate
(EN HIGH to output TRISTATE)
C
≤ 50pF 15
OUT
C
≤ 50pF 10 µs
OUT
0.8 V
5 µA
CC
V
0.5 µA
V
-0.3
V
2mA
-20 mA
mA
6
mA
µs
+3R
INCIN
Note : 1. The input resistor threshold value is theresistor value from theIN-pin to ground at which the corresponding output changes
itsstatus (see fig. 3).
3/9
Loading...