Analog Devices Inc./Maxim Integrated MAX6315US30D2-G01

Overview

MAX6315US30D2-G01 from Maxim Integrated is a low-power CMOS microprocessor supervisory circuit that monitors V_CC supply voltage and asserts an open-drain active-low RESET signal when voltage falls below 3.00V or when manual reset (MR) is asserted. It features a factory-trimmed 3.00V reset threshold, 20ms minimum reset timeout period, 5µA supply current, and SOT143-4 package. It is used in portable/battery-powered equipment to prevent code-execution errors during power-up, brownout, or shutdown.

For engineers reviewing the MAX6315US30D2-G01 datasheet, MAX6315US30D2-G01 pinout, MAX6315US30D2-G01 application, or MAX6315US30D2-G01 equivalent, key selection criteria include its precise 3.00V threshold tolerance (±3.5% over -40°C to +125°C), immunity to short V_CC transients (<1µs glitch rejection), open-drain output capable of level-shifting above V_CC, and guaranteed operation across automotive-grade temperature range.

Technical Context

The MAX6315US30D2-G01 implements a precision bandgap-based voltage comparator with laser-trimmed resistive divider to set the 3.00V reset threshold, coupled with a monolithic RC timer for the 20ms (min) reset timeout. Its internal MR pull-up resistor (63kΩ) enables direct switch-to-ground connection without external components.

Reset assertion is fully monotonic: RESET remains low until V_CC exceeds 3.00V and sustains for ≥20ms; any dip below threshold resets the timer. The open-drain output supports pull-up to up to +6.0V - enabling interfacing with higher-voltage logic domains independent of V_CC.

Key Specifications

Pinout & Package

SOT143-4 surface-mount package (3.0mm × 1.6mm × 1.1mm), lead-free and RoHS-compliant, tape-and-reel packaging only.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microprocessor supervisory applications.

Compared with MAX6315US30D2-G01, MAX811SEUS30D3-T offers longer reset timing at higher current cost, while TPS3801K30DBVR reduces power by 68% but removes MR functionality and changes footprint - making MAX6315US30D2-G01 optimal for balanced performance in manually serviceable, thermally demanding 3.3V systems.

Availability

MAX6315US30D2-G01 is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered IoT edge nodes, industrial PLC I/O modules, and automotive body control units requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6315US30D2-G01 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.

The MAX6315 family was designed specifically for cost-sensitive, space-constrained microprocessor supervision in battery-operated and thermally harsh environments - delivering precision voltage monitoring, configurable timeout, and robust noise immunity in minimal footprint.

FAQ

What is the exact reset threshold voltage and tolerance for MAX6315US30D2-G01?

The MAX6315US30D2-G01 has a factory-trimmed nominal reset threshold of 3.00V, with a guaranteed tolerance of ±3.5% over the full operating temperature range of –40°C to +125°C. This specification is confirmed in the Electrical Characteristics table under "Reset Threshold (Note 1)" and applies directly to the MAX6315US30D2-G01 variant with D2 suffix (20ms timeout) and 3.00V threshold.

Does MAX6315US30D2-G01 support manual reset, and how is it implemented?

Yes, MAX6315US30D2-G01 supports manual reset via the MR pin (Pin 3). A logic-low input on MR asserts RESET immediately and holds it active for the full 20ms timeout after MR returns high. The device includes an internal 63kΩ pull-up resistor on MR, so the pin can be left floating if unused - or connected to ground via a momentary switch for operator-initiated reset without external components.

Can the RESET output of MAX6315US30D2-G01 be pulled up to a voltage higher than VCC?

Yes, the RESET output of MAX6315US30D2-G01 is an open-drain n-channel MOSFET rated for up to +6.0V. It can be pulled up to any voltage between 0V and +6.0V - including supplies higher than V_CC - enabling level-shifted reset signaling across different voltage domains, such as driving a 5V FPGA reset input from a 3.3V-supplied MAX6315US30D2-G01.

What is the minimum reset timeout period specified for MAX6315US30D2-G01?

The MAX6315US30D2-G01 has a minimum reset timeout period of 20ms, as indicated by the "D2" suffix in the part number and confirmed in the Ordering Information table. This value is guaranteed over temperature and process variation, and the actual timeout may be longer depending on conditions - but will never fall below 20ms.

Is MAX6315US30D2-G01 compatible with the MAX811, and in what way?

Yes, MAX6315US30D2-G01 is pin-compatible with the MAX811 series per the datasheet feature list ("Pin-Compatible with MAX811"). Both share identical SOT143-4 pinout (V_CC, MR, RESET, GND), same 3.00V threshold option, and open-drain RESET output. However, MAX6315US30D2-G01 offers lower 5µA supply current vs. MAX811's ~15µA and improved temperature range (–40°C to +125°C vs. –40°C to +85°C for most MAX811 variants).