參數(shù)資料
型號: L9705D
英文描述: DOUBLE QUAD CONTACT INTERFACE CIRCUIT
中文描述: 雙四接觸界面電路
文件頁數(shù): 1/8頁
文件大?。?/td> 1861K
代理商: L9705D
L9705
DOUBLE QUAD CONTACT INTERFACE CIRCUIT
ADVANCE DATA
OPERATING DC SUPPLY VOLTAGE RANGE
5V TO 25V
SUPPLY OVERVOLTAGE PULSE UP TO 40V
VERY LOW STAND-BY QUIESCENT CUR-
RENT, MAX 50
μ
A
INTERNAL CLAMPING DIODES AT CONTACT
INPUTS TO Vs AND gnd WITH PULSE CUR-
RENT CAPABILITY UP TO +50mA, -75mA
CHIP ENABLE FUNCTION AND TRISTATE
OUTPUTS FOR PARALLEL BUS CONNECTION
NOMINAL CONTACT CURRENTS OF 10mA
DEFINED WITH EXTERNAL CONTACT SE-
RIES RESISTORS R
IN1-8
CONTACT
STATUS
MEANS OF COMPARING THE RESISTANCE
AT CONTACT SENSE INPUTS WITH THE IN-
TERNAL REFERENCE RESISTOR VALUE
RESISTANCE COMPARING WITH HYSTER-
ESIS FOR HIGH NOISE IMMUNITY AND IM-
MUNITY TO GROUND AND BATTERY PO-
TENTIAL DIFFERENCES
MONITORING
BY
DESCRIPTION
The L9705 is a bipolar monolithic integrated cir-
cuit for monitoring the status of up to four con-
tacts connected to GND and up to four contacts
connected to the battery. The contact sense input
supply the contact current and perform the con-
tact resistance comparison function.
At the output the contact status is translated into
a logical LOW level (contact closed) or logical
HIGh level (contact open).
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
January 1992
BLOCK DIAGRAM
ORDERING NUMBERS :
L9705
DIP 20
SO20L
1/8
相關PDF資料
PDF描述
L9705 DOUBLE QUAD CONTACT INTERFACE CIRCUIT
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