Analog Devices Inc./Maxim Integrated MAX6741XKYDD3

Overview

MAX6741XKYDD3 from Maxim Integrated is a dual-voltage microprocessor supervisor IC with push-pull RESET and open-drain VCC1 Power-OK (POK1) output, factory-trimmed thresholds of 2.925V (VCC1) and 2.188V (VCC2), 150ms minimum reset timeout, 6µA supply current, and SC70-5 package - used for precise power-supply sequencing in portable dual-rail systems.

For engineers reviewing the MAX6741XKYDD3 datasheet, MAX6741XKYDD3 pinout, MAX6741XKYDD3 application, or MAX6741XKYDD3 equivalent, this page delivers verified electrical parameters, confirmed POK1 timing behavior, exact SC70-5 terminal mapping, and validated alternatives for dual-supply reset monitoring with sequencing support.

Technical Context

The MAX6741XKYDD3 integrates two independent voltage monitors (VCC1 and VCC2) with factory-set thresholds, a dedicated POK1 output that asserts high only after VCC1 exceeds 2.925V for ≥37.5ms, and a push-pull RESET output guaranteed valid down to VCC1 = 1.2V. It operates across –40°C to +85°C with no external components required for basic sequencing.

Its POK1 logic is fully decoupled from MR and VCC2 inputs, enabling reliable I/O-to-core power-up control. The 150ms reset timeout (D3 suffix) begins only after POK1 timeout completes and VCC2 ≥ 2.188V, ensuring strict sequencing compliance before system release.

Key Specifications

Pinout & Package

MAX6741XKYDD3 uses the 5-pin SC70-5 package (1.6mm × 1.6mm × 0.9mm height), optimized for space-constrained portable designs. Pinout is identical across MAX6741/MAX6744 variants per datasheet Figure 15 (top view).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6744XKYDD3, the MAX6741XKYDD3 provides essential POK1 sequencing control at the cost of open-drain output drive; versus TPS3808G33DBVR, it delivers true dual-rail supervision and deterministic power-up coordination - making it irreplaceable in multi-voltage SoC or FPGA designs.

Availability

MAX6741XKYDD3 is available at Aetrix Electronics and suitable for portable electronics, power-supply sequencing, and industrial embedded controllers requiring stable component supply, guaranteed -40°C to +85°C operation, and long-term production continuity.

Supply support for MAX6741XKYDD3 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 power management, sensing, and interface applications in industrial, automotive, and consumer markets.

The MAX6736–MAX6745 family was engineered specifically for low-power, space-constrained dual- and triple-supply microprocessor supervision - emphasizing sequencing integrity, ultra-low quiescent current, and SC70 packaging for portable and battery-operated systems.

FAQ

What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6741XKYDD3?

The MAX6741XKYDD3 has factory-trimmed reset thresholds of 2.925V for VCC1 and 2.188V for VCC2, as defined by the "Y" and "D" suffixes in its part number per Table 1 of the datasheet. These values are guaranteed over –40°C to +85°C with ±2.5% tolerance and include built-in hysteresis to prevent chatter during supply transients. The MAX6741XKYDD3 does not support adjustable thresholds.

Does the MAX6741XKYDD3 provide a Power-OK (POK) output, and how is it timed?

Yes, the MAX6741XKYDD3 provides an open-drain active-high POK1 output on pin 4. POK1 remains low until VCC1 exceeds 2.925V for a minimum of 37.5ms (tPOKP), after which it pulls high (with external pullup). This timing is independent of MR and VCC2, making it ideal for controlling VCC2 regulator enable signals in strict power-up sequences. The MAX6741XKYDD3 POK1 behavior is fully documented in the Electrical Characteristics table.

What is the reset timeout period for the MAX6741XKYDD3, and how is it selected?

The MAX6741XKYDD3 has a 150ms minimum reset timeout period, indicated by the "D3" suffix in its part number. This value is fixed and factory-programmed - no external components or configuration pins alter it. The timeout begins only after POK1 timeout completes and VCC2 rises above 2.188V, ensuring sequencing integrity before RESET deassertion. The MAX6741XKYDD3 does not support user-selectable timeouts.

Can the MAX6741XKYDD3 be used in battery-powered applications?

Yes, the MAX6741XKYDD3 is explicitly designed for battery-powered applications, drawing only 6µA typical supply current across its full operating range. Its low power consumption, combined with SC70-5 packaging and dual-supply supervision, makes it ideal for portable medical devices, handheld test equipment, and IoT edge nodes where runtime and board space are critical. The MAX6741XKYDD3 maintains full functionality down to VCC1 = 1.2V.

What package type and pin count does the MAX6741XKYDD3 use?

The MAX6741XKYDD3 uses the SC70-5 package: a 5-pin, surface-mount, lead-free (RoHS-compliant) package measuring 1.6mm × 1.6mm × 0.9mm. Pinout is standardized across the MAX6741/MAX6744 series per datasheet Figure 15, with pins assigned as RESET (1), GND (2), VCC2 (3), POK1 (4), and VCC1 (5). The MAX6741XKYDD3 is not available in SOIC, SOT23, or other variants.