Catalyst Semiconductor CAT811SEUS-T

Voltage Supervisor/Reset IC, Fixed, 1 Channel, +2.93V, PDSO4

Voltage Supervisors 2.93V Push-Pull Low

4-Pin Microprocessor Power Supply Supervisors

1-CHANNEL POWER SUPPLY SUPPORT CKT PDSO4

The CAT811 and CAT812 are microprocessor supervisory circuits that monitor power supplies. The CAT811 and CAT812 are direct replacements for theMAX811 and MAX812 in applications operating over the industrial temperature range; both have a manual reset input. These devices generate a reset signal, which is asserted while the power supply voltage is below a preset threshold level and for at least 140 ms after the power supply level has risen above that level. The underlying floating gate technology, AE2(TM) used by Catalyst Semiconductor,makes it possible to offer any custom reset threshold value. Seven industry standard threshold levels are offered to support +5.0 V, +3.3 V, +3.0 V and +2.5 V systems. The CAT811 features a RESET push-pull output (activeLOW) and the CAT812 features a RESET push-pull output (active HIGH). Fast transients on the power supply are ignored and the output is guaranteed to be in the correct state at V cc levels as low as 1.0 V. The CAT811/812 are fully specified over the industrial temperature range (-40oC to 85oC) and are available in a compact 4-pin SOT143 package.