사양
| 속성 | 가치 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Type | Simple Reset/Power-On Reset |
| Number of Voltages Monitored | 1 |
| Voltage - Threshold | 4.38V |
| Output | Push-Pull, Totem Pole |
| Reset | Active Low |
| Reset Timeout | 140ms Minimum |
| Operating Temperature | -40°C ~ 105°C (TA) |
| Mounting Type | Surface Mount |
개요
Description
MAX809MEUR+T is a MAX809 microprocessor supervisory/reset circuit from Maxim Integrated (now Analog Devices). It monitors Vcc and generates a clean reset signal for a microcontroller or digital logic during power-up/power-down and brownouts. The MEUR package is an 8-pin RoHS-compliant small-outline (the +T indicates tape-and-reel packaging). The MAX809 family provides fixed-threshold versions (e.g., around 4.63 V for 5 V logic or 2.93 V for lower-voltage logic) with an active-low reset output and built-in power-on reset delay. Some variants offer a manual reset input; others rely solely on Vcc monitoring. Typical usage: Vcc to the device’s Vcc pin, ground to GND, RESET (RESET#) output to the MCU reset input, with recommended decoupling and pullups as needed. Applications include MCU reset in 4.5–5.5 V or 2.7–5.5 V systems, embedded controllers, and other digital systems requiring reliable brown-out protection. For exact threshold, pinout, and timing, consult the MAX809 datasheet for the MEUR+T variant.
Equivalent
MAX809MEUR+T is a voltage supervisor/reset generator. Equivalents from other vendors include:
- Analog Devices: ADM809/ADM810
- Texas Instruments: TPS379xx, TPS3800x, TPS3836/3839
- Microchip: MCP1316/MCP1317 (and related MCP1315)
Note: choose parts with the same reset thresholds and voltage ranges; ensure packaging matches (SOT-23-3, SOIC, tape & reel) for MAX809MEUR+T.
- Analog Devices: ADM809/ADM810
- Texas Instruments: TPS379xx, TPS3800x, TPS3836/3839
- Microchip: MCP1316/MCP1317 (and related MCP1315)
Note: choose parts with the same reset thresholds and voltage ranges; ensure packaging matches (SOT-23-3, SOIC, tape & reel) for MAX809MEUR+T.
Features
Here are the typical features of MAX809MEUR+T (MAX809 family) in concise form:
- Microprocessor supervisory/reset IC: monitors Vcc and generates a reset for MCUs.
- Fixed reset thresholds (variants available in the family; exact value for this part shown in datasheet).
- Power-on reset: guaranteed reset during power-up until Vcc stabilizes.
- Manual reset input (MR) to force a reset.
- Reset output (RESET): push-pull, active low during reset.
- External timing option: reset release delay set by an external capacitor.
- Low quiescent current in normal operation.
- 8-pin RoHS-compliant package with Tape & Reel (MEUR+T).
- Wide operating temperature range suitable for common electronics applications (refer to datasheet for exact range).
Note: exact voltage threshold and timing specs depend on the specific MAX809 variant; consult the datasheet for the precise values of MAX809MEUR+T.
- Microprocessor supervisory/reset IC: monitors Vcc and generates a reset for MCUs.
- Fixed reset thresholds (variants available in the family; exact value for this part shown in datasheet).
- Power-on reset: guaranteed reset during power-up until Vcc stabilizes.
- Manual reset input (MR) to force a reset.
- Reset output (RESET): push-pull, active low during reset.
- External timing option: reset release delay set by an external capacitor.
- Low quiescent current in normal operation.
- 8-pin RoHS-compliant package with Tape & Reel (MEUR+T).
- Wide operating temperature range suitable for common electronics applications (refer to datasheet for exact range).
Note: exact voltage threshold and timing specs depend on the specific MAX809 variant; consult the datasheet for the precise values of MAX809MEUR+T.
Pinout
- Pin count: 8 pins (8-pin package).
- Function: Microprocessor reset supervisor (voltage detector). It monitors Vcc and generates an active-low reset output when the supply falls below the threshold; includes a manual reset input to force a reset.
- Function: Microprocessor reset supervisor (voltage detector). It monitors Vcc and generates an active-low reset output when the supply falls below the threshold; includes a manual reset input to force a reset.
Manufacturer
- Manufacturer: Maxim Integrated Products (now part of Analog Devices, Inc., ADI).
- What kind of company: A global semiconductor company that designs, manufactures, and sells analog and mixed-signal integrated circuits.
- What kind of company: A global semiconductor company that designs, manufactures, and sells analog and mixed-signal integrated circuits.
Application
MAX809MEUR+T is a microprocessor supervisory/reset device. Applications include:
- Monitoring supply voltage and generating a deterministic reset for CPUs/MCUs, FPGAs/PLDs, and memories
- Power-on/reset and brown-out protection
- Optional manual reset input (external pushbutton)
- Suitable for single- and multi-supply systems
Common domains: automotive, industrial (ECUs, controllers, sensors), consumer electronics, and embedded/battery-powered devices that require guaranteed reset behavior on power-up/power-down.
- Monitoring supply voltage and generating a deterministic reset for CPUs/MCUs, FPGAs/PLDs, and memories
- Power-on/reset and brown-out protection
- Optional manual reset input (external pushbutton)
- Suitable for single- and multi-supply systems
Common domains: automotive, industrial (ECUs, controllers, sensors), consumer electronics, and embedded/battery-powered devices that require guaranteed reset behavior on power-up/power-down.
Package
MAX809MEUR+T is a 3-pin SOT-23 (SC-70-3) package, RoHS-compliant, and shipped in Tape & Reel (TR) packaging.
