Maxim MAX705

Mfr. Part

MAX705

Manufacturer

Analog Devices / Maxim Integrated. Y-IC is a quality distributor for Analog Devices | Maxim products, and we are committed to delivering the best products and services to every customer.

Detailed Description

MAX705 is a microprocessor supervisory IC for 5 V systems. It monitors the supply, asserts reset on brownouts, provides a watchdog timer to catch firmware lockups, and supports a manual reset input. It typically offers both active-low and active-high reset outputs to suit different MCU/MPU requirements. Ideal for improving system reliability with minimal board space. Commonly supplied in SOIC-8 (SOP-8).

Key Features

Precision reset threshold for 5 V rails (typ around 4.65 V)

Brownout detection with clean, glitch-free reset

Watchdog timer (typical long timeout, around 1.6 s) to detect stalled code

Manual reset (MR) input for pushbutton or external control

Dual reset outputs (active-low RESET and active-high RESET) on many variants

Low quiescent current (tens of µA typical)

Factory-trimmed thresholds for tight accuracy over temperature

Qualified for industrial temperature ranges (check datasheet for grade)

Simple 8‑pin footprint; minimal external components

Key Advantages

Boosts system uptime by preventing undefined MCU operation during brownouts

Catches firmware hangs without extra software complexity

Fast, reliable reset ensures clean startup and recovery

Reduces design time with a proven, compact solution

Low power draw preserves overall system efficiency

Flexible polarity outputs ease integration across many CPUs and PMICs

Packaging

Package/case: SOIC‑8 (SOP‑8), plastic encapsulated (JEDEC MS‑012)

Body size (nominal): about 4.9 × 3.9 mm; height ~1.5 mm; lead pitch 1.27 mm

Pins: 8 leads; typical signal set includes VCC, GND, RESET (active‑low), RESET (active‑high), WDI (watchdog input), MR (manual reset). Exact pinout depends on specific suffix/package—confirm in datasheet.

Material and finish: molded epoxy body; copper alloy leadframe; lead‑free, RoHS‑compliant plating (e.g., matte tin/Ni) available

Shipping forms: Tape‑and‑Reel, Tube, or Cut Tape (availability varies by suffix)

Moisture Sensitivity Level: typically MSL 1 (unlimited at ≤30°C/85% RH, confirm per datasheet/label)

Thermal characteristics (SOIC‑8 on standard PCB): θJA roughly 120–160 °C/W typical; Tjmax ~150 °C (verify exact figures in datasheet)

Electrical highlights (typical for MAX705 family):

- Operating VCC geared for 5 V systems (monitor window around 4.65 V threshold)

- Reset timeout: short fixed delay after VCC recovery (hundreds of ms typical)

- Watchdog timeout: long interval (about 1.6 s typical)

- Reset outputs: push‑pull drivers for both polarities on many variants

- ESD protection: HBM rating typically in the kV range (check datasheet)

Lifecycle

Status: Active and in broad, long‑term use across many designs

Not nearing discontinuation based on current market status

Equivalent or alternative models (verify pin compatibility, thresholds, and timing):

- MAX706 (Analog Devices/Maxim): similar, lower 5 V threshold (≈4.40 V)

- MAX707 / MAX708 (Analog Devices/Maxim): similar supervisors for ~3 V rails (different thresholds)

- ADM705 / ADM706 (Analog Devices): comparable supervisors with similar functions

- TPS3813, TPS3823/4/8 (Texas Instruments): supervisor ICs with watchdog/reset (different pinouts/timings)

- MCP1316/MCP1318/MCP1320 (Microchip): supervisors with watchdog (verify thresholds/pinouts)

If you need drop‑in replacements or second sources, contact our sales team through the Y-IC website for a tailored cross-reference and availability.

Key Application Areas

MCU/MPU brownout protection and reliable system reset

Industrial control, PLCs, motor drives

Networking, routers, switches, gateways

Consumer and smart home devices

Instrumentation, test and measurement

Telecom and POS terminals

Data loggers and edge IoT nodes

Storage, servers, and embedded PCs

Datasheet

Our website hosts the most authoritative datasheet for the current MAX705. We strongly recommend downloading it from this page to confirm pinout, thresholds, timing, and package details.

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