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CAT812TEUS-T10 Datasheet(PDF) 1 Page - Catalyst Semiconductor |
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CAT812TEUS-T10 Datasheet(HTML) 1 Page - Catalyst Semiconductor |
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1 / 11 page  1 CAT811, CAT812 4-Pin Microprocessor Power Supply Supervisors FEATURES s 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 s Offered in two output configurations: - CAT811: Active LOW reset - CAT812: Active HIGH reset s Manual reset input s Direct replacements for the MAX811 and MAX812 in applications operating over the industrial temperature range s Reset valid down to V CC = 1.0 V s 6 µA power supply current s Power supply transient immunity s Compact 4-pin SOT143 package s Industrial temperature range: -40˚C to +85˚C © 2004 by Catalyst Semiconductor, Inc., Patent Pending Characteristics subject to change without notice Doc. No. 3005, Rev. P APPLICATIONS s Computers s Servers s Laptops s Cable modems s Wireless communications s Embedded control systems s White goods s Power meters s Intelligent instruments s PDAs and handheld equipment 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, 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 (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. PIN CONFIGURATION THRESHOLD SUFFIX SELECTOR Nominal Threshold Threshold Suffix Voltage Designation 4.63V L 4.38V M 4.00V J 3.08V T 2.93V S 2.63V R 2.32V Z ALO GEN FR TM LEAD FREE 1 2 4 3 GND (RESET) VCC CAT811 (CAT812) RESET |
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