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TC1279-15ENBTR 数据表(PDF) 1 Page - Microchip Technology |
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TC1279-15ENBTR 数据表(HTML) 1 Page - Microchip Technology |
1 / 12 page © 2007 Microchip Technology Inc. DS21384D-page 1 TC1278/TC1279 Features • Precision VCC Monitor for 5.0V System Supplies • 250 ms Minimum RESET Output Duration • Output Valid to VCC = 1.2V •VCC Transient Immunity • Small 3-Pin SOT-23 Package • No External Components • Internal Pull-up Resistor • Available in 3 different voltage detection levels: - 4.625V (typ.), -5 suffix - 4.375V (typ.), -10 suffix - 4.125V (typ.), -15 suffix Applications • Computers • Embedded Systems • Battery Powered Equipment • Critical µP Power Supply Monitoring Typical Operating Circuit General Description The TC1278/TC1279 are cost-effective system super- visor circuits designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. No external components are required. The open-drain output uses an internal pull-up resistor of approximately 6 k Ω. The reset output is driven active within 5 µs of VCC falling through the reset voltage threshold. RESET is maintained active for a minimum of 250 ms after VCC rises above the reset threshold. The TC1278 has an active-high RESET output, while the TC1279 has an active-low RESET output, with both devices having an open-drain output stage. The output is valid down to VCC = 1.2V. Both devices are available in a 3-Pin SOT- 23 package. Package Type RESET GND + – VCC VREF Internal Pull-up 6k Ω Resistor TC1279 TC1278 has an active-high RESET output. VCC (TC1278) RESET GND TC1278 TC1279 1 2 3 3-Pin SOT-23 (TC1279) RESET 3-Pin Reset Monitors for 5V Systems Obsolete Device |
类似零件编号 - TC1279-15ENBTR |
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类似说明 - TC1279-15ENBTR |
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