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ZSM380 Datasheet(PDF) 1 Page - Zetex Semiconductors |
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ZSM380 Datasheet(HTML) 1 Page - Zetex Semiconductors |
1 / 5 page Issue 3 - July 2006 © Zetex Semiconductors plc 2006 SUPPLY VOLTAGE MONITOR ISSUE 3 – JULY 2006 ZSM380 DEVICE DESCRIPTION The ZSM380 is a three terminal under v o l t a g e m o n i tor c irc ui t fo r u s e i n microprocessor systems. The threshold voltage of the device has been set to 3.8 volts making it ideal for 5 volt circuits. Included in the device is a precise voltage reference and a comparator with built in hysteresis to prevent erratic operation. The ZSM380 features an open collector output capable of sinking at least l0mA which only r equires a single external resistor to interface to following circuits. Operation of the device is guaranteed from one volt upwards, from this level to the device threshold voltage the output is held low providing a power on reset function. Should the supply voltage, once established, at any time drop below the threshold level then the output again will pull low. The device is available in a TO92 package for through hole applications as well as SOT223 for surface mount requirements. FEATURES • SOT223 and TO92 packages • Power on reset generator • Automatic reset generation • Low standby current • Guaranteed operation from 1 volt • Wide supply voltage range • Internal clamp diode to discharge delay capacitor • 3.8 volt threshold for 5 volt logic • 20mV hysteresis prevents erratic operation APPLICATIONS • Microprocessor systems • Computers • Computer peripherals • Instrumentation • Automotive • Battery powered equipment SCHEMATIC DIAGRAM 4-349 |
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