Analog Devices Inc./Maxim Integrated MAX6369KA
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | RoHS non-compliant |
| Package / Case | SOT-23-8 |
| Mfr | Analog Devices Inc./Maxim Integrated |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Type | Watchdog Circuit |
| Output | Open Drain or Open Collector |
| Number of Voltages Monitored | 1 |
| Supplier Device Package | SOT-23-8 |
| Voltage - Threshold | Adjustable/Selectable |
| Reset | Active Low |
| Reset Timeout | Adjustable/Selectable |
| Package | Bulk |
| Product Status | Obsolete |
| Conevo-Key Programmable | Not Verified |
| Base Product Number | MAX6369 |
| Standard Package | 1 |
| ECCN | OBSOLETE |
| HTSUS | 0000.00.0000 |
MAX6369KA Watchdog Timer, Microprocessor Supervisor IC Chip Overview
The MAX6369KA is a precision watchdog timer supervisor designed by Maxim Integrated (now part of Analog Devices) to enhance system reliability in critical microprocessor (µP) applications. Operating across a +2.5V to +5.5V supply range, this 8-pin SOT23-8 packaged device monitors µP activity and signals operational anomalies via a low-effective, open-drain watchdog output (WDO). Its key features include pin-selectable watchdog timeout periods (adjustable via configuration pins), startup delay options, and a timer-disable function for flexible system integration. With a 10µA supply current and no external components required, it minimizes power consumption and board space.
Technical Specifications
The MAX6369KA offers a configurable watchdog timeout period (e.g., 60s default, adjustable via pin strapping) and a startup delay to prevent false triggers during initialization. Its open-drain WDO output asserts a 100ms pulse when the timeout expires, enabling system reset or interrupt generation. The device includes a low-power BICMOS design, ensuring 8µA typical supply current at 3V. Key parameters include a 2.5V minimum operating voltage, 5.5V maximum, and a 700mW power dissipation rating. The SOT23-8 package measures 2.90mm x 1.60mm x 1.44mm, with gull-wing leads and a 0.65mm pitch. Applications span automotive electronics, industrial controllers, and network infrastructure, where robust µP supervision is critical.
For similar applications, consider the following alternatives:
● MAX6369KA/V+T: Offers identical pin-selectable watchdog timing but with enhanced temperature range and automotive-grade compliance.
● MAX6370KA: Features adjustable watchdog timeout and startup delay, with a push-pull output option for faster signal propagation.
● MAX6371KA: Provides a longer watchdog timeout range (up to 1.6s) and supports higher-voltage systems (5.5V max).
● MAX6374KA: Includes a manual reset input (MR) for systems requiring external reset control.
