LM810 Series

3-pin voltage supervisor (reset IC) with active-high, push-pull reset for supply monitoring

Catalog

3-pin voltage supervisor (reset IC) with active-high, push-pull reset for supply monitoring

Part	Supplier Device Package	Output	Number of Voltages Monitored	Package / Case	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Reset	Voltage - Threshold	Type	Reset Timeout [Min]
Texas Instruments LM810M3X-4.63/NOPB	SOT-23-3	Push-Pull Totem Pole	1	SC-59 SOT-23-3 TO-236-3	Surface Mount	105 °C	-40 °C	Active High	4.63 V	Simple Reset/Power-On Reset	140 ms
Texas Instruments LM810M3X-2.63	SOT-23-3	Push-Pull Totem Pole	1	SC-59 SOT-23-3 TO-236-3	Surface Mount	105 °C	-40 °C	Active High	2.63 V	Simple Reset/Power-On Reset	140 ms
Texas Instruments LM810M3-4.00/NOPB	SOT-23-3	Push-Pull Totem Pole	1	SC-59 SOT-23-3 TO-236-3	Surface Mount	105 °C	-40 °C	Active High	4 V	Simple Reset/Power-On Reset	140 ms
Texas Instruments LM810M3-3.08/NOPB	SOT-23-3	Push-Pull Totem Pole	1	SC-59 SOT-23-3 TO-236-3	Surface Mount	105 °C	-40 °C	Active High	3.08 V	Simple Reset/Power-On Reset	140 ms
Texas Instruments LM810M3-2.63/NOPB	SOT-23-3	Push-Pull Totem Pole	1	SC-59 SOT-23-3 TO-236-3	Surface Mount	105 °C	-40 °C	Active High	2.63 V	Simple Reset/Power-On Reset	140 ms
Texas Instruments LM810M3X-4.63	SOT-23-3	Push-Pull Totem Pole	1	SC-59 SOT-23-3 TO-236-3	Surface Mount	105 °C	-40 °C	Active High	4.63 V	Simple Reset/Power-On Reset	140 ms
Texas Instruments LM810M3X-3.08	SOT-23-3	Push-Pull Totem Pole	1	SC-59 SOT-23-3 TO-236-3	Surface Mount	105 °C	-40 °C	Active High	3.08 V	Simple Reset/Power-On Reset	140 ms
Texas Instruments LM810M3X-4.00/NOPB	SOT-23-3	Push-Pull Totem Pole	1	SC-59 SOT-23-3 TO-236-3	Surface Mount	105 °C	-40 °C	Active High	4 V	Simple Reset/Power-On Reset	140 ms
Texas Instruments LM810M3X-2.93	SOT-23-3	Push-Pull Totem Pole	1	SC-59 SOT-23-3 TO-236-3	Surface Mount	105 °C	-40 °C	Active High	2.93 V	Simple Reset/Power-On Reset	140 ms
Texas Instruments LM810M3X-4.38	SOT-23-3	Push-Pull Totem Pole	1	SC-59 SOT-23-3 TO-236-3	Surface Mount	105 °C	-40 °C	Active High		Simple Reset/Power-On Reset	140 ms

Catalog

3-pin voltage supervisor (reset IC) with active-high, push-pull reset for supply monitoring

Key Features

• Precision Monitoring of Supply VoltagesAvailable Threshold Options:2.63 V, 2.93 V, 3.08 V, 4.38 V, 4.63 VSuperior Upgrade to MAX809 and MAX810Fully Specified Over Temperature140-ms Minimum Power-On Reset Pulse Width,240-ms TypicalActive-LowRESETOutput (LM809)Active-High RESET Output (LM810)Ensured RESET Output Valid for VCC≥ 1 VLow Supply Current, 15-µA TypicalPower Supply Transient ImmunityPrecision Monitoring of Supply VoltagesAvailable Threshold Options:2.63 V, 2.93 V, 3.08 V, 4.38 V, 4.63 VSuperior Upgrade to MAX809 and MAX810Fully Specified Over Temperature140-ms Minimum Power-On Reset Pulse Width,240-ms TypicalActive-LowRESETOutput (LM809)Active-High RESET Output (LM810)Ensured RESET Output Valid for VCC≥ 1 VLow Supply Current, 15-µA TypicalPower Supply Transient Immunity

Description

The LM809 and LM810 microprocessors supervisory circuits can be used to monitor the power supplies in microprocessor and digital systems. They provide a reset to the microprocessor during power-up, power-down and brown-out conditions. The function of the LM809 and LM810 are to monitor the VCCsupply voltage, and assert a reset signal whenever this voltage declines below the factory-programmed reset threshold. The reset signal remains asserted for 240 ms after VCCrises above the threshold. The LM809 has an active-lowRESEToutput, while the LM810 has an active-high RESET output. Seven standard reset voltage options are available, suitable for monitoring 5-V, 3.3-V, and 3-V supply voltages. With a low supply current of only 15 µA, the LM809 and LM810 are ideal for use in portable equipment. The LM809 and LM810 microprocessors supervisory circuits can be used to monitor the power supplies in microprocessor and digital systems. They provide a reset to the microprocessor during power-up, power-down and brown-out conditions. The function of the LM809 and LM810 are to monitor the VCCsupply voltage, and assert a reset signal whenever this voltage declines below the factory-programmed reset threshold. The reset signal remains asserted for 240 ms after VCCrises above the threshold. The LM809 has an active-lowRESEToutput, while the LM810 has an active-high RESET output. Seven standard reset voltage options are available, suitable for monitoring 5-V, 3.3-V, and 3-V supply voltages. With a low supply current of only 15 µA, the LM809 and LM810 are ideal for use in portable equipment.