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L9705

Description
Interface - Specialized Double Quad Interfac
CategoryAnalog mixed-signal IC    The signal circuit   
File Size160KB,8 Pages
ManufacturerSTMicroelectronics
Websitehttp://www.st.com/
Environmental Compliance
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L9705 Overview

Interface - Specialized Double Quad Interfac

L9705 Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerSTMicroelectronics
Parts packaging codeDIP
package instructionDIP-20
Contacts20
Reach Compliance Codecompliant
Analog Integrated Circuits - Other TypesANALOG CIRCUIT
JESD-30 codeR-PDIP-T20
JESD-609 codee3
Number of functions1
Number of terminals20
Maximum operating temperature125 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Encapsulate equivalent codeDIP20,.3
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
power supply5,5/25 V
Certification statusNot Qualified
Maximum seat height3.93 mm
Maximum supply current (Isup)8 mA
Maximum supply voltage (Vsup)25 V
Minimum supply voltage (Vsup)5 V
surface mountNO
technologyBIPOLAR
Temperature levelAUTOMOTIVE
Terminal surfaceMatte Tin (Sn)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width7.62 mm
L9705
DOUBLE QUAD CONTACT INTERFACE CIRCUIT
s
s
s
s
s
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OPERATING DC SUPPLY VOLTAGE RANGE
5V TO 25V
SUPPLY OVERVOLTAGE PULSE UP TO 40V
VERY LOW STAND-BY QUIESCENT
CURRENT, MAX 50µA
INTERNAL CLAMPING DIODES AT
CONTACT INPUTS TO Vs AND gnd WITH
PULSE CURRENT CAPABILITY UP TO
+50mA, -75mA
CHIP ENABLE FUNCTION AND
TRISTATE OUTPUTS FOR PARALLEL BUS
CONNECTION
NOMINAL CONTACT CURRENTS OF 10mA
DEFINED WITH EXTERNAL CONTACT
SERIES RESISTORS R
IN1-8
CONTACT STATUS MONITORING BY
MEANS OF COMPARING THE RESISTANCE
AT CONTACT SENSE INPUTS WITH THE
INTERNAL REFERENCE RESISTOR VALUE
RESISTANCE COMPARING WITH
HYSTERESIS FOR HIGH NOISE IMMUNITY
AND IMMUNITY TO GROUND AND BATTERY
POTENTIAL DIFFERENCES
DIP20
SO20
ORDERING NUMBERS:
L9705
L9705D
DESCRIPTION
s
The L9705 is a bipolar monolithic integrated circuit
for monitoring the status of up to four contacts con-
nected to GND and up to four contacts connected
to the battery. The contact sense input supply the
contact current and perform the contact resistance
comparison function.
At the output the contact status is translated into a
logical LOW level (contact closed) or logical HIGH
level (contact open).
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BLOCK DIAGRAM
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November 2003
1/8
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