Analog Devices Inc./Maxim Integrated MAX6354SVUK

Overview

The MAX6354SVUK from Maxim Integrated is a dual-voltage microprocessor supervisory circuit with active-low push-pull reset output referenced to VCC2, factory-set VCC1 threshold of 2.93V and VCC2 threshold of 1.58V, 100ms minimum reset timeout, 20µA supply current, and operation over –40°C to +85°C - used in multivoltage embedded systems to ensure reliable power-on and brownout reset sequencing.

For engineers reviewing the MAX6354SVUK datasheet, MAX6354SVUK pinout, MAX6354SVUK application, or MAX6354SVUK equivalent, key selection criteria include dual-supply monitoring capability, VCC2-referenced reset assertion, guaranteed RESET validity down to VCC2 = 1.0V, and compatibility with 5-pin SOT23 PCB layouts for space-constrained industrial controllers and portable equipment.

Technical Context

The MAX6354SVUK monitors two independent supply rails (VCC1 and VCC2), asserting its single active-low push-pull RST output when either supply falls below its precision factory-trimmed threshold (2.93V for VCC1, 1.58V for VCC2). Reset remains valid as long as at least one supply exceeds +1.0V, enabling robust operation during asymmetric rail collapse.

It features a debounced TTL/CMOS-compatible manual-reset input (MR) with sub-microsecond response and glitch rejection, and supports no external components in dual-rail systems - eliminating discrete resistor networks required by comparator-based supervisors. The device uses BiCMOS process technology for low quiescent current and stable temperature performance.

Key Specifications

Pinout & Package

MAX6354SVUK is housed in a 5-pin SOT23 package (U5-1 outline), footprint-compatible with industry-standard 5-pin SOT-23 land pattern 90-0174, and rated for surface-mount reflow assembly per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6353SVUK, the MAX6354SVUK provides VCC2-referenced reset timing critical for systems where secondary rail stability governs safe operation; compared with TPS3808G18DBVR, it delivers integrated dual-rail supervision in one device, reducing footprint and inter-rail timing uncertainty.

Availability

MAX6354SVUK is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, automotive body control modules, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6354SVUK 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) designs precision analog and mixed-signal ICs for industrial, communications, computing, and consumer applications.

The MAX6351–MAX6360 family was engineered specifically for multivoltage microprocessor systems requiring coordinated, rail-specific reset generation without external components - targeting space-constrained, high-reliability embedded platforms.

FAQ

What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6354SVUK?

The MAX6354SVUK has a factory-set VCC1 threshold of 2.93V (±0.05V at +25°C) and VCC2 threshold of 1.58V (±0.03V at +25°C), as defined by the "SV" suffix in the Voltage Threshold Levels table. These values are precision-trimmed during wafer sort and guaranteed over –40°C to +85°C with ±0.15V total variation including tempco and initial tolerance. The MAX6354SVUK maintains these thresholds without calibration or external components.

How does the MAX6354SVUK handle power supply transients?

The MAX6354SVUK rejects short negative-going transients on VCC1 or VCC2 with immunity up to 100ns duration at 100mV overdrive, as verified in the Maximum VCC Transient Duration vs. Reset Threshold Overdrive graph. This prevents false resets caused by switching noise or ESD coupling. The MAX6354SVUK achieves this via internal glitch filtering and hysteresis, with no external RC network required - a key advantage over discrete supervisor solutions.

Can the MAX6354SVUK operate with VCC2 below 1.8V?

Yes - the MAX6354SVUK is fully specified down to VCC2 = 1.2V and guarantees valid reset output functionality as low as VCC2 = 1.0V, per Absolute Maximum Ratings and Electrical Characteristics. Its 1.58V threshold and push-pull output referenced to VCC2 allow reliable operation with modern low-voltage rails such as +1.6V or +1.8V. The MAX6354SVUK maintains 20µA supply current and 100ms reset timeout across this range.

Is the MAX6354SVUK pin-compatible with other devices in the MAX6351–MAX6360 family?

The MAX6354SVUK shares the same 5-pin SOT23 (U5-1) package and pinout with MAX6352, MAX6353, and MAX6354 variants, but differs functionally from 6-pin versions (e.g., MAX6355–MAX6360). Pin 1 is RST (push-pull, VCC2-referenced), Pin 4 is VCC2, and Pin 5 is VCC1 - identical across all 5-pin members. However, MAX6354SVUK is not functionally interchangeable with MAX6352 (open-drain RST) or MAX6353 (VCC1-referenced RST) without circuit review.

Does the MAX6354SVUK include a watchdog timer?

No - the MAX6354SVUK does not include a watchdog timer. Watchdog functionality is exclusive to the 6-pin variants MAX6358, MAX6359, and MAX6360 in this family. The MAX6354SVUK provides only dual-voltage monitoring, manual reset input, and a single VCC2-referenced reset output. Its ordering suffix "SV" and 5-pin SOT23 package confirm absence of WDI pin and associated timer circuitry.