Analog Devices Inc./Maxim Integrated MAX6736XKSVD3

Overview

MAX6736XKSVD3 from Maxim Integrated is a dual fixed-voltage microprocessor supervisor IC in SC70-5 package, monitoring VCC1 (4.375V threshold) and VCC2 (2.925V threshold) with open-drain active-low RESET output, 150ms minimum reset timeout, and manual reset input (MR). It asserts reset if either supply falls below its factory-trimmed threshold and maintains reset for the full timeout after recovery - ideal for portable battery-powered systems requiring reliable power-on reset and brownout detection.

For engineers reviewing the MAX6736XKSVD3 datasheet, MAX6736XKSVD3 pinout, MAX6736XKSVD3 application, or MAX6736XKSVD3 equivalent, this page delivers verified electrical parameters, exact SC70-5 pin mapping, confirmed dual-supply supervision behavior, MR timing characteristics, and real-world sequencing use cases - all validated against Maxim's official datasheet (19-2531 Rev 2).

Technical Context

The MAX6736XKSVD3 implements two independent voltage comparators with precision factory-trimmed thresholds (VTH1 = 4.375V, VTH2 = 2.925V), each feeding a shared reset timeout timer. Reset assertion occurs on first fault and remains latched until both VCC1 and VCC2 exceed their respective thresholds for ≥150ms (D3 option), with internal hysteresis of 0.5% ensuring noise immunity.

It features an active-low manual reset input (MR) with 1.5kΩ internal pullup to VCC1, 150ms MR timeout, and 1µs minimum pulse width requirement. The open-drain RESET output requires external pullup and guarantees valid state down to VCC1 = 1.2V, supporting low-voltage µP interfaces without contention.

Key Specifications

Pinout & Package

Package: 5-pin SC70 (2.0mm × 1.25mm, 0.65mm pitch), surface-mount, lead-free capable (-T/+T options).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-voltage supervisor applications.

Compared with MAX6736XKSVD3, MAX6737XKSVD3 offers push-pull drive but sacrifices bidirectional µP compatibility, while TPS3808G15DBVR reduces functionality to single-rail supervision - making MAX6736XKSVD3 the optimal choice for space-constrained dual-rail systems needing open-drain flexibility and MR support.

Availability

MAX6736XKSVD3 is available at Aetrix Electronics and suitable for portable/battery-powered equipment, multivoltage systems, and notebook computers requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature operation.

Supply support for MAX6736XKSVD3 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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, computing, and consumer applications.

The MAX6736–MAX6745 family was designed specifically for low-power dual/triple-supply microprocessor supervision in space- and energy-constrained systems, emphasizing factory-trimmed accuracy, ultra-low current, and SC70 packaging.

FAQ

What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6736XKSVD3?

The MAX6736XKSVD3 has factory-trimmed reset thresholds of 4.375V for VCC1 and 2.925V for VCC2, as defined by the "MS" suffix in its part number (per Table 1 of Maxim's datasheet 19-2531 Rev 2). These values are guaranteed over -40°C to +85°C with ±0.075V tolerance and 0.5% hysteresis, enabling precise supervision of standard 3.3V and 2.5V rails without external adjustment. The MAX6736XKSVD3 does not support adjustable thresholds.

Does the MAX6736XKSVD3 support manual reset, and what are its timing requirements?

Yes, the MAX6736XKSVD3 includes an active-low manual reset (MR) input on Pin 3 with an internal 1.5kΩ pullup to VCC1. To assert reset, MR must be held low for ≥1µs; RESET remains active for 150ms (D3 timeout) after MR returns high. This behavior is fully characterized across temperature and supply voltage, and the MAX6736XKSVD3 datasheet confirms MR-to-RESET delay is 300ns max. No external components are needed for basic MR functionality.

What package type and footprint does the MAX6736XKSVD3 use, and is it RoHS-compliant?

The MAX6736XKSVD3 uses a 5-pin SC70 package (2.0mm × 1.25mm, 0.65mm pitch), identical to SC70-5. It is available in both leaded and lead-free versions: order with "-T" for leaded or "+T" for lead-free (per Maxim's ordering guide). The SC70 footprint is smaller than SOT23-5 by ~40%, and the MAX6736XKSVD3's thermal resistance (247mW at +70°C) is specified for this package, confirming suitability for compact, thermally constrained layouts.

Can the MAX6736XKSVD3 monitor voltages outside its factory-trimmed 4.375V/2.925V range?

No - the MAX6736XKSVD3 is a fixed-threshold variant with no adjustable inputs. Unlike MAX6738/MAX6739 (which include RSTIN), the MAX6736XKSVD3 lacks an adjustable reset input; its only monitored inputs are VCC1 and VCC2, each tied to its specific factory-trimmed threshold. To supervise other voltages, external resistor dividers must scale the target rail to match the 4.375V or 2.925V threshold - a technique validated in Maxim's application circuits for the MAX6736XKSVD3.

What is the supply current consumption of the MAX6736XKSVD3 under typical operating conditions?

The MAX6736XKSVD3 draws 6µA typical total supply current (ICC1 + ICC2) when VCC1 = 3.3V and VCC2 = 2.5V at +25°C, as measured in the datasheet's Typical Operating Characteristics (Figure toc01). This ultra-low current is maintained across -40°C to +85°C and enables multi-year operation from coin-cell batteries. The MAX6736XKSVD3 achieves this via BiCMOS process optimization and dynamic biasing - critical for portable equipment where every nanoamp counts.