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参数资料
| 型号： | L9704D |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 电源管理 |
| 英文描述： | 8-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20 |
| 封装： | SO-20 |
| 文件页数： | 1/8页 |
| 文件大小： | 351K |
| 代理商： | L9704D |
L9704
March 1992
OCTAL SUPPLY CONTACT MONITORING CIRCUIT
.
OPERATING DC SUPPLY VOLTAGE RANGE
5V TO 25V
.
SUPPLY OVERVOLTAGE PULSE UP TO 40V
.
VERY LOW STANDBY QUIESCENT CUR-
RENT 0.2mA
.
INTERNAL CLAMPING DIODES AT CONTACT
INPUTS TO VS AND GND
.
INPUT PULSE CURRENT CAPABILITY UP TO
+ 50mA, – 75mA
.
NOMINAL CONTACT CURRENTS OF 10mA
DEFINED BY EXTERNAL CONTACT SERIES
RESISTORS RIN1-8
.
CONTACT STATUS MONITORING BY COM-
PARING THE RESISTANCE AT CONTACT
SENSE INPUTS WITH THE INTERNAL REFER-
ENCE RESISTOR VALUE
.
HIGH IMMUNITY DUE TO RESISTANCE COM-
PARISON WITH HYSTERESIS
ORDERING NUMBERS: L9704 (DIP–20)
L9704D (SO–20L)
DIP–20
SO–20L
DESCRIPTION
The L9704 is a bipolar monolithic integrated circuit
for monitoring the status of up to eight contacts con-
nected to the power supply (battery).
It contains eight contact sense inputs and eight mi-
crocomputer compatible three-state outputs.
BLOCK DIAGRAM
1/8
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