| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
26,534 pcs
|
26534 pcs | On Request | 1 | On Request | On Request | 2020+ | On Request | On Request | |
|
1,096 pcs
|
1096 pcs | On Request | 1 | On Request | On Request | 504 | On Request | On Request |
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The MCP121-450E/TO is a voltage supervisor IC from Microchip Technology designed for critical microcontroller and microprocessor power-monitoring applications. It ensures reliable system operation by keeping a microcontroller in reset until the system voltage stabilizes at the proper level.
This device features a single voltage threshold of 4.38V and an active-low, open-drain reset output. It includes a typical reset delay of 80ms. The operating temperature range is -40°C to 125°C (TA), making it suitable for various environmental conditions.
Packaged in a TO-92-3 (TO-226-3, TO-92-3) package, the MCP121-450E/TO is designed for through-hole mounting. Its ultra-low supply current of 1.75 µA (steady-state maximum) makes it ideal for portable, battery-powered equipment. Applications include computers, intelligent instruments, and other systems requiring robust power monitoring.
This supervisor resets microcontrollers during power-loss events, preventing erratic behavior and data corruption. The open-drain output requires an external pull-up resistor for proper operation.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.75 | $0.75 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
-40°C to 125°C.
TO-226-3, TO-92-3 (TO-226AA) through-hole package.
Maximum 1.75µA steady-state.
Typical 120ms, minimum 80ms.
4.38V nominal.
Open drain or open collector, active-low.
1 voltage.