ZC811 RESET IC替代MAX811

四维电子

Features
 Precision voltage monitor for 3V, 3.3V or 5V power supplies
) c$ \6 g4 a3 K7 K; k' r6 Y- { 140ms minimum reset pulse width available
. ~7 ~& L3 I8 [! E Reset remains valid with V CC as low as 1V
 3μAtypical supply current
) F; L1 f! l: Y. l7 r; Y' e& i' c Available in 4-pin SOT-143 package
6 z; E* T. ]$ {" m  V( A# D5 X; zApplications
 Computer
 Controller
 Intelligent Instruments
 Critical uP and uC Power Monitoring
* L: i7 t6 _, O' y, i Portable/Battery-Powered Equipment
4 y0 i; U( [6 Z9 i' e" G- uDescription
The ZC811is a low-power microprocessor (μP)
supervisory circuit used to monitor power supplies
1 K+ w; [0 L- N' }* }$ _# Iin microprocessor and digital systems. Low supply
& s& M1 C0 X/ Gcurrent makes the ZC811ideal for use in portable
equipment. The device comes in a 4-pin SOT-143
package.
  M& j- k  z' e8 rThe ZC811provides excellent circuit reliability and
low BOM cost by eliminating external components
and adjustments when used with 5V-powered or
' Y% L* e- r7 q5 }1 c3 ]3V-powered circuits. The ZC811also provides a
debounced manual reset input.
The function of this device is to assert a reset if
either the power supply drops below a designed
reset threshold level or MR is forced low. The
reset comparator is designed to ignore fast transients
. k- d% M) j$ E/ i( z+ Non V CC . Reset thresholds are available for operation
with a variety of supply voltages.
* R- z3 r) b( G+ m% m