Analog Devices Inc./Maxim Integrated MAX6310UK30D1-T

Overview

MAX6310UK30D1-T from Maxim Integrated is a 5-pin SOT23 programmable supervisory IC that monitors VCC (factory-set 3.0V reset threshold), an adjustable undervoltage input (RST IN), and an adjustable overvoltage input (OVRST IN) to assert a push/pull active-low RESET output. It features 8µA supply current, guaranteed RESET validity down to VCC = 1V, 1ms minimum reset timeout, and immunity to fast VCC transients. It is used in multivoltage embedded systems requiring reliable power-on and brownout reset control.

For engineers reviewing the MAX6310UK30D1-T datasheet, MAX6310UK30D1-T pinout, MAX6310UK30D1-T application, or MAX6310UK30D1-T equivalent, key selection considerations include its dual-input monitoring capability (VCC + RST IN + OVRST IN), factory-trimmed 3.0V ±2.5% threshold at -40°C to +85°C, 1ms reset timeout, push/pull output drive, and SOT23-5 package compatibility with space-constrained portable designs.

Technical Context

The MAX6310UK30D1-T implements a triple-monitor architecture: internal factory-trimmed resistor divider for VCC supervision at 3.0V nominal, plus two external-adjustable comparators referenced to a 1.23V internal bandgap-RST IN for undervoltage detection and OVRST IN for overvoltage detection. All three inputs feed a shared reset generator with a fixed 1ms (min) timeout period.

Its push/pull RESET output guarantees VOL ≤ 0.3V at ISINK = 500µA and VOH ≥ 0.8 × VCC at ISOURCE = 150µA, enabling direct interface with 3.3V/5V µP reset pins without external pull-up. The device operates across VCC = (3.0V × 1.025) to +5.5V and remains functional down to VCC = 1.0V, with reset assertion guaranteed over full temperature range (-40°C to +85°C).

Key Specifications

Pinout & Package

MAX6310UK30D1-T is housed in a RoHS-compliant 5-pin SOT23 package (outline 21-0057, land pattern 90-0174), measuring 2.9mm × 1.6mm × 1.1mm, suitable for high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6310EUK30D1-T, the MAX6310UK30D1-T offers identical performance at lower cost for commercial-temperature applications; compared with TPS3808G30DBVR, it delivers critical triple-input supervision and push/pull drive - eliminating external components and enabling robust multirail fault response.

Availability

MAX6310UK30D1-T is available at Aetrix Electronics and suitable for industrial PLC I/O modules, medical portable monitors, automotive body control units, and network edge routers requiring stable component supply across production lifecycles.

Supply support for MAX6310UK30D1-T 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, communications, and computing markets.

The MAX6305–MAX6313 family was designed specifically for multivoltage embedded systems needing simultaneous monitoring of primary and auxiliary rails with factory-trimmed precision and transient immunity - targeting portable, medical, and industrial applications where reliability outweighs cost sensitivity.

FAQ

What is the exact factory-set reset threshold voltage for MAX6310UK30D1-T?

The MAX6310UK30D1-T has a factory-trimmed VCC reset threshold of 3.0V nominal, with tolerance of ±2.5% over the full operating temperature range of -40°C to +85°C. This value is confirmed in the Electrical Characteristics table under "Reset Threshold (VTH)" for MAX6310/MAX6310E devices, and corresponds to the "30" in the part number per Table 1 of the datasheet.

Does MAX6310UK30D1-T support monitoring of voltages other than VCC?

Yes, MAX6310UK30D1-T supports two additional monitoring inputs: RST IN (undervoltage comparator) and OVRST IN (overvoltage comparator), both referenced to a precise 1.23V internal bandgap. These allow user-programmable supervision of secondary rails (e.g., 5V, 12V, or negative supplies) using external resistor dividers - a capability confirmed in the Pin Description and Detailed Description sections.

What is the reset timeout period for MAX6310UK30D1-T, and is it adjustable?

The MAX6310UK30D1-T has a factory-programmed reset timeout period of 1ms minimum, indicated by the "D1" suffix. This timeout is fixed and non-adjustable externally - it is implemented via an internal RC timer and guaranteed across temperature. The datasheet specifies tRP = 1.0ms (min) to 2.0ms (max) for D1 versions under standard conditions.

Can MAX6310UK30D1-T operate with VCC below 3.0V?

Yes, MAX6310UK30D1-T can operate with VCC as low as 1.0V, and its RESET output remains valid (logic-low) down to that level. However, monitoring of VCC itself requires VCC ≥ 3.075V (i.e., 102.5% of 3.0V threshold) to ensure proper internal divider biasing - below this, only RST IN and OVRST IN remain functional per the Absolute Maximum Ratings and Electrical Characteristics notes.

Is MAX6310UK30D1-T pin-compatible with other devices in the MAX6305–MAX6313 family?

Yes, all MAX6305–MAX6313 devices share the same SOT23-5 pinout and footprint, including MAX6310UK30D1-T. Pin 1 is RESET, Pin 2 is GND, Pin 3 is RST IN, Pin 4 is OVRST IN, and Pin 5 is VCC - verified in the Pin Configurations section and functional diagram. This allows drop-in replacement within the same functional subgroup (e.g., MAX6307/MAX6310/MAX6313).