MAX821TUS+T
Active4-PIN, ΜP VOLTAGE MONITORS WITH PIN-SELECTABLE POWER-ON RESET TIMEOUT DELAY
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MAX821TUS+T
Active4-PIN, ΜP VOLTAGE MONITORS WITH PIN-SELECTABLE POWER-ON RESET TIMEOUT DELAY
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Technical Specifications
Parameters and characteristics for this part
| Specification | MAX821TUS+T |
|---|---|
| Mounting Type | Surface Mount |
| Number of Voltages Monitored | 1 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 °C |
| Output | Push-Pull, Totem Pole |
| Package / Case | TO-253AA, TO-253-4 |
| Reset | Active Low |
| Reset Timeout | Adjustable/Selectable |
| Supplier Device Package | SOT-143-4 |
| Type | Simple Reset/Power-On Reset |
| Voltage - Threshold | 3.08 V |
MAX821 Series
4-Pin, µP Voltage Monitors with Pin-Selectable Power-On Reset Timeout Delay
| Part | Voltage - Threshold | Mounting Type | Reset | Package / Case | Type | Output | Supplier Device Package | Operating Temperature [Max] | Operating Temperature [Min] | Number of Voltages Monitored | Reset Timeout | Reset Timeout |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Analog Devices Inc./Maxim Integrated | ||||||||||||
Analog Devices Inc./Maxim Integrated | 2.93 V | Surface Mount | Active Low | TO-253-4 TO-253AA | Simple Reset/Power-On Reset | Push-Pull Totem Pole | SOT-143-4 | 125 °C | -40 °C | 1 | Adjustable/Selectable | |
Analog Devices Inc./Maxim Integrated | 4.63 V | Surface Mount | Active Low | TO-253-4 TO-253AA | Simple Reset/Power-On Reset | Push-Pull Totem Pole | SOT-143-4 | 125 °C | -40 °C | 1 | Adjustable/Selectable | |
 Analog Devices Inc./Maxim Integrated | 4.63 V | Surface Mount | Active Low | TO-253-4 TO-253AA | Simple Reset/Power-On Reset | Push-Pull Totem Pole | SOT-143-4 | 125 °C | -40 °C | 1 | Adjustable/Selectable | |
Analog Devices Inc./Maxim Integrated | 3.08 V | Surface Mount | Active Low | TO-253-4 TO-253AA | Simple Reset/Power-On Reset | Push-Pull Totem Pole | SOT-143-4 | 125 °C | -40 °C | 1 | Adjustable/Selectable | |
Analog Devices Inc./Maxim Integrated | 2.63 V | Surface Mount | Active Low | TO-253-4 TO-253AA | Power Supply Monitor | Push-Pull Totem Pole | SOT-143-4 | 125 °C | -40 °C | 1 | 100 ms | |
Analog Devices Inc./Maxim Integrated | 2.78 V | Surface Mount | Active Low | TO-253-4 TO-253AA | Simple Reset/Power-On Reset | Push-Pull Totem Pole | SOT-143-4 | 125 °C | -40 °C | 1 | Adjustable/Selectable | |
Analog Devices Inc./Maxim Integrated | 4 V | Surface Mount | Active Low | TO-253-4 TO-253AA | Simple Reset/Power-On Reset | Push-Pull Totem Pole | SOT-143-4 | 125 °C | -40 °C | 1 | Adjustable/Selectable | |
 Analog Devices Inc./Maxim Integrated | Surface Mount | Active Low | TO-253-4 TO-253AA | Simple Reset/Power-On Reset | Push-Pull Totem Pole | SOT-143-4 | 125 °C | -40 °C | 1 | Adjustable/Selectable | ||
Analog Devices Inc./Maxim Integrated | 2.78 V | Surface Mount | Active Low | TO-253-4 TO-253AA | Simple Reset/Power-On Reset | Push-Pull Totem Pole | SOT-143-4 | 125 °C | -40 °C | 1 | Adjustable/Selectable |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 6.94 | |
| 10 | $ 4.71 | |||
| 25 | $ 4.14 | |||
| 100 | $ 3.49 | |||
| 250 | $ 3.18 | |||
| 500 | $ 2.99 | |||
| 1000 | $ 2.83 | |||
| Digi-Reel® | 1 | $ 6.94 | ||
| 10 | $ 4.71 | |||
| 25 | $ 4.14 | |||
| 100 | $ 3.49 | |||
| 250 | $ 3.18 | |||
| 500 | $ 2.99 | |||
| 1000 | $ 2.83 | |||
| N/A | 3243 | $ 5.18 | ||
| 42500 | $ 5.18 | |||
| Tape & Reel (TR) | 2500 | $ 2.66 | ||
Description
General part information
MAX821 Series
The MAX821/MAX822 microprocessor (µP) supervisory circuits monitor power supplies in µP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with 5V-powered or 3V-powered circuits. The MAX821/MAX822 also provide a power-on reset timeout delay that is pin selectable to 1ms (max), 20ms (min), or 100ms (min).These devices perform a single function: they assert a reset signal whenever the VCCsupply voltage falls below a preset threshold, and they keep reset asserted for the pin-selected reset timeout delay after VCChas risen above the reset threshold. The only difference between the two devices is that the MAX821 has an active-low RESET output (which is guaranteed to be in the correct state for VCCdown to 1V), while the MAX822 has an active-high RESET output. The reset comparator is designed to ignore fast transients on VCC. Reset thresholds suitable for operation with a variety of supply voltages are available.Low supply current makes the MAX821/MAX822 ideal for use in portable equipment. These devices come in a 4-pin SOT143 package.ApplicationsBar-Code ScannersComputers: Desktop, Workstation, ServerControllersCritical µP and µC Power MonitoringIntelligent InstrumentsPortable Battery-Powered Equipment