仕様
| 属性 | 値 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| Type | Simple Reset/Power-On Reset |
| NumberofVoltagesMonitored | 1 |
| Voltage-Threshold | 4.63V |
| Output | Push-Pull, Totem Pole |
| Reset | Active High |
| ResetTimeout | 140ms Minimum |
| OperatingTemperature | -40°C ~ 105°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | TO-236-3, SC-59, SOT-23-3 |
概要
Description
MAX810LTRG is a Maxim (now Analog Devices) microprocessor supervisory device with watchdog protection. It monitors the supply (Vcc) and generates a reset to the microcontroller if the voltage falls below a preset threshold or if the watchdog timer expires, ensuring reliable MCU startup and fault recovery.
Key points:
- Provides a reset output (active reset signal) and often a manual reset input for user-initiated resets.
- Includes a watchdog timer to detect software hangs and force a reset.
- Fixed/ selectable voltage thresholds and low quiescent current.
- RoHS lead-free package (LTRG code indicates the package/reel variant).
Typical use:
- Brown-out and reset protection for embedded microcontrollers in systems such as consumer, automotive, and industrial controllers.
- Ensures proper reset sequencing after power-up or during fault conditions.
Quick hookup (high level):
- Power from the MCU supply rail.
- Connect the device’s reset output to the MCU reset pin.
- Provide a means to trigger a manual reset and refresh the watchdog as specified.
Always consult the datasheet for exact pinout, thresholds, timing, and package details.
Key points:
- Provides a reset output (active reset signal) and often a manual reset input for user-initiated resets.
- Includes a watchdog timer to detect software hangs and force a reset.
- Fixed/ selectable voltage thresholds and low quiescent current.
- RoHS lead-free package (LTRG code indicates the package/reel variant).
Typical use:
- Brown-out and reset protection for embedded microcontrollers in systems such as consumer, automotive, and industrial controllers.
- Ensures proper reset sequencing after power-up or during fault conditions.
Quick hookup (high level):
- Power from the MCU supply rail.
- Connect the device’s reset output to the MCU reset pin.
- Provide a means to trigger a manual reset and refresh the watchdog as specified.
Always consult the datasheet for exact pinout, thresholds, timing, and package details.
Equivalent
Direct equivalents (same family): MAX811, MAX812 (voltage supervisor/reset ICs).
Cross-vendor equivalents: TI TLV803/TPS379/TPS3800; Microchip MCP1315/1316; On Semiconductor NCP431; Analog Devices ADM803/ADM804; Seiko Instruments S-813 series.
Notes: when selecting, match supply-threshold and reset-delay specs and choose the Pb-free 8-pin SOIC with LTRG packaging if required.
Cross-vendor equivalents: TI TLV803/TPS379/TPS3800; Microchip MCP1315/1316; On Semiconductor NCP431; Analog Devices ADM803/ADM804; Seiko Instruments S-813 series.
Notes: when selecting, match supply-threshold and reset-delay specs and choose the Pb-free 8-pin SOIC with LTRG packaging if required.
Features
Key features of MAX810LTRG (microprocessor supervisory/reset IC):
- Single-supply operation from 2.7V to 5.5V (suitable for 3.3V/5V systems)
- Power-on reset: guarantees a proper reset during power-up
- Manual reset input (MR) to force a reset
- Reset output: active-low, push-pull/CMOS-compatible
- Optional watchdog/heartbeat input to reset the MCU if the microcontroller stops toggling
- Low quiescent current (very small standby consumption)
- Industrial temperature range (typically -40°C to +85°C)
- Small RoHS-compliant LTRG package (tape-and-reel, lead-free) suitable for surface-mount designs
Note: exact timing and pin configuration vary by variant; check the datasheet for precise reset timing, watchdog behavior, and pinout.
- Single-supply operation from 2.7V to 5.5V (suitable for 3.3V/5V systems)
- Power-on reset: guarantees a proper reset during power-up
- Manual reset input (MR) to force a reset
- Reset output: active-low, push-pull/CMOS-compatible
- Optional watchdog/heartbeat input to reset the MCU if the microcontroller stops toggling
- Low quiescent current (very small standby consumption)
- Industrial temperature range (typically -40°C to +85°C)
- Small RoHS-compliant LTRG package (tape-and-reel, lead-free) suitable for surface-mount designs
Note: exact timing and pin configuration vary by variant; check the datasheet for precise reset timing, watchdog behavior, and pinout.
Pinout
- Pin count: 5 pins (SOT23-5 package as MAX810LTRG)
- Function: Microprocessor reset supervisory circuit (voltage detector). Monitors Vcc and asserts an active-low reset output when the supply is out of range; includes a manual reset input (MR) to force reset; provides power-on reset for proper MCU startup.
- Function: Microprocessor reset supervisory circuit (voltage detector). Monitors Vcc and asserts an active-low reset output when the supply is out of range; includes a manual reset input (MR) to force reset; provides power-on reset for proper MCU startup.
Manufacturer
- Manufacturer: Maxim Integrated (now part of Analog Devices).
- Company type: A semiconductor company specializing in analog and mixed-signal integrated circuits; historically fabless (designs ICs and outsources fabrication).
- Company type: A semiconductor company specializing in analog and mixed-signal integrated circuits; historically fabless (designs ICs and outsources fabrication).
Application
Typical application areas for MAX810LTRG:
- Microprocessor/microcontroller reset supervision
- System watchdogs to detect software hangs
- Power-on reset and brown-out protection for digital systems
- Battery-powered and low-power embedded devices
- Consumer electronics, automotive modules, and industrial control equipment
- Reset distribution networks for FPGA/ASIC designs
- Any system needing reliable reset signals during power-up/down and supply dips
- Microprocessor/microcontroller reset supervision
- System watchdogs to detect software hangs
- Power-on reset and brown-out protection for digital systems
- Battery-powered and low-power embedded devices
- Consumer electronics, automotive modules, and industrial control equipment
- Reset distribution networks for FPGA/ASIC designs
- Any system needing reliable reset signals during power-up/down and supply dips
Package
8-pin SOIC (Small-Outline Integrated Circuit) package; lead-free/RoHS compliant; available in Tape & Reel.
