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參數(shù)資料
| 型號： | L9704D |
| 廠商： | 意法半導體 |
| 英文描述： | OCTAL SUPPLY CONTACT MONITORING CIRCUIT |
| 中文描述： | 八路電源監(jiān)控電路聯(lián)系 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 171K |
| 代理商： | L9704D |
Theinternalclampingdiodesatthecontactmonitor-
inginputs,togetherwith theexternalcontactseries
resistors R
IN
, allows the device to withstand tran-
sients atthecontactconnection.Thecontactseries
resistorR
IN
limits the input current at the transient.
The dynamic behaviourof the circuit is defined by
the times t
do
andt
dTS
. When the contact becomes
open, the input capacitor C
IN
must be charged
throughthe resistor R
IN
. In this casethe total delay
timemay alsobeinfluencedbythetime constantR
IN
C
IN
. The delaytime t
dTS
, whendisabling thedevice
isdefinedonlybytheinternalcircuitry. Inbothcases,
anexternaloutputcapacitancelessthan50pFisas-
sumed, the internal output capacitances of the
three-statebuffers areless than5pF.
Figure 2
: The ContactSenseInputConnectionwith theContactEquivalent Circuit.
Figure 3
:The OutputVoltageas a Functionof the Input Resistance at the CorrespondingContact Sense
Input.
L9704
5/8
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