Product Overview CAT811: Voltage Supervisor, 4-Pin, Push-Pull, Active Low, with Manual Reset For complete documentation, see the data sheet Product Description The CAT811 and CAT812 are µP supervisory circuits that monitor power supplies in digital systems. The CAT811 and CAT812 are direct replacements for the MAX811 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, Analog EEPROM used by ON 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 <span class='overline'>RESET</span> push-pull output (active LOW) 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 VCC levels as low as 1.0 V. The CAT811/812 are fully specified over the industrial temperature range (-40°C to 85°C) and are available in a compact 4-pin SOT143 package. Features • Precision monitoring of +5.0 V (±5%, ±10%, ±20%), +3.3 V (±5%, ±10%), +3.0 V (±10%) and +2.5 V (±5%) power supplies • Offered in two output configurations: - CAT811: Active LOW reset - CAT812: Active HIGH reset • Manual reset input • Direct replacements for the MAX811 and MAX812 in applications operating over the industrial temperature range • Reset valid down to VCC = 1.0 V • 6 µA power supply current • Power supply transient immunity • Compact 4-pin SOT143 package • Industrial temperature range: -40°C to +85°C Applications • • • • • Computers Servers Laptops Cable modems Wireless communications Part Electrical Specifications Product Compliance Status Voltages Monitored VCC Max (V) V(TO) Typ (V) IQ Typ (µA) Reset Active State Reset Timer Manual Reset Watchdog Timer Package Type CAT811LTBI-GT3 Pb-free Active 1 5.5 4.63 8 Low Yes No No SOT-1234 Active 1 5.5 2.93 6 Low Yes No No SOT-1234 Active 1 5.5 3.08 6 Low Yes No No SOT-1234 Halide free CAT811STBI-GT3 Pb-free Halide free CAT811TTBI-GT3 Pb-free Halide free For more information please contact your local sales support at www.onsemi.com Created on: 6/30/2016