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CAT705 Datasheet(PDF) 1 Page - Catalyst Semiconductor |
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CAT705 Datasheet(HTML) 1 Page - Catalyst Semiconductor |
1 / 14 page CAT705, CAT706, CAT813 © Catalyst Semiconductor, Inc. 1 Doc. No. MD-3030, Rev. A Characteristics subject to change without notice µP Supervisory Circuits FEATURES Accurate under voltage system monitoring RESET ¯¯¯¯¯¯ guaranteed valid for VCC = 1.0V 6µA supply current 200ms RESET pulse width Watchdog timer function 1.6 sec timeout Brownout detection system reset for use with 3.0, 3.6, and 5.0 volt systems Pin and function compatible with the MAX705/706/813L products Operating Range from -40°C to +85°C Available in SOIC 8-lead and MSOP 8-lead packages APPLICATIONS Microprocessor and microcontroller based systems Intelligent instruments Control systems Critical µP monitors Portable equipment DESCRIPTION The CAT705, CAT706, and CAT813 provide reset and monitoring functions for the electronic systems. Each device monitors the system voltage and maintains a reset output until that voltage reaches the device’s specified trip value and then maintains the reset output active condition until the device’s internal timer allows the system power supply to stabilize. The CAT705, CAT706, and CAT813 have a watchdog input which can be used to monitor a system signal and cause a reset to be issued if the signal fails to change state prior to a timeout condition. The CAT705 and CAT706 provide a manual RESET ¯¯¯¯¯¯ input which initiate reset if pulled low. The CAT705, CAT706 and CAT813 provide a RESET output which is low for the CAT705 and CAT706, but high for the CAT813. There is a secondary supply monitor included for power-fail warning (pin PFI). The CAT706 has a threshold voltage 4.40V. The CAT705/ CAT813 have a threshold voltage of 4.65V. For Ordering Information details, see page 13. PIN CONFIGURATION SOIC 8-Lead 2 3 1 4 WDO WDI 8 RESET 7 6 MR VCC PFI PFO 5 GND (RESET for CAT813) MSOP 8-Lead 2 3 1 4 WDI PFI 8 PFO 7 6 RESET (RESET for CAT813) WDO VCC GND 5 MR PIN FUNCTIONS Pin Name Function MR ¯¯¯ Manual Reset input VCC Power Supply GND Ground PFI Power Fail voltage monitor Input. PFO ¯¯¯¯ Power Fail Output WDI Watchdog Timer Input RESET ¯¯¯¯¯¯ CMOS Push-Pull Active Low Reset Output (CAT705 & CAT706) RESET CMOS Push-Pull Active High Reset Output (CAT813) WDO ¯¯¯¯¯ Watchdog Timer Output |
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Similar Description - CAT705 |
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