Analog Devices Inc./Maxim Integrated MAX6741XKZGD3-T

Overview

The MAX6741XKZGD3-T from Maxim Integrated is a dual-voltage microprocessor supervisor IC with push-pull reset output, power-OK (POK1) output, and factory-trimmed reset thresholds of 2.313V (VCC1) and 1.575V (VCC2). It asserts reset when either supply falls below its threshold, maintains reset for ≥150ms after recovery, and consumes only 6µA typical supply current. It is designed for power-supply sequencing in dual-rail systems such as I/O-to-core voltage ramp control in portable embedded controllers.

For engineers reviewing the MAX6741XKZGD3-T datasheet, MAX6741XKZGD3-T pinout, MAX6741XKZGD3-T application, or MAX6741XKZGD3-T equivalent, key selection criteria include VCC1/VCC2 threshold pairing, POK1 timing (37.5–75ms), SC70-5 package compatibility, and absence of manual reset input - distinguishing it from MR-equipped variants like MAX6736/MAX6737.

Technical Context

The MAX6741XKZGD3-T implements dual independent voltage monitoring paths with precision bandgap references, each feeding comparators with 0.5% hysteresis. Its POK1 output is driven by a dedicated timer that activates only after VCC1 exceeds VTH1 for tPOKP (37.5–75ms), decoupling power-good assertion from reset timeout logic.

Reset assertion is edge-triggered on falling VCC1 or VCC2, with internal timeout restart capability if either supply dips again before tRP (150–300ms) completes. The push-pull RESET output is referenced to VCC1 and guarantees valid state down to VCC1 = 1.2V, enabling operation in ultra-low-voltage core domains.

Key Specifications

Pinout & Package

MAX6741XKZGD3-T is housed in a 5-pin SC70-5 package (1.6mm × 1.6mm × 0.9mm height), optimized for space-constrained portable and IoT applications. Pin 1 is RESET (push-pull active-low), Pin 2 is GND, Pin 3 is VCC2, Pin 4 is POK1 (open-drain active-high), and Pin 5 is VCC1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6744XKZGD3-T, the MAX6741XKZGD3-T omits MR to reduce pin count and simplify layout, while retaining identical sequencing capability via POK1. Versus TPS3808G125DBVR, it provides true dual-rail supervision and power-good signaling - essential for modern multi-voltage SoCs.

Availability

MAX6741XKZGD3-T is available at Aetrix Electronics and suitable for power-supply sequencing, industrial controller supervision, and portable medical sensor node applications requiring stable component supply and guaranteed long-term availability.

Supply support for MAX6741XKZGD3-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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.

The MAX6736–MAX6745 product line was designed specifically for low-power, space-constrained dual- and triple-voltage microprocessor supervision with integrated sequencing features - targeting portable, battery-operated, and industrial embedded systems.

FAQ

What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6741XKZGD3-T?

The MAX6741XKZGD3-T has factory-trimmed reset thresholds of 2.313V for VCC1 and 1.575V for VCC2, as indicated by the "ZG" suffix per Table 1 in the datasheet. These values are guaranteed over -40°C to +85°C with ±0.100V and ±0.090V tolerances respectively, enabling precise matching to standard 2.5V and 1.6V supply rails.

Does the MAX6741XKZGD3-T include a manual reset (MR) input?

No, the MAX6741XKZGD3-T does not include a manual reset input. Per the Selector Guide and Pin Description, MR is present only on MAX6736–MAX6739 and MAX6740/MAX6742/MAX6743/MAX6745 variants. The MAX6741XKZGD3-T relies solely on VCC1/VCC2 monitoring and POK1 sequencing, simplifying system-level reset control.

What is the function and timing behavior of the POK1 output on the MAX6741XKZGD3-T?

The POK1 output on the MAX6741XKZGD3-T is an open-drain active-high signal that asserts high only after VCC1 exceeds 2.313V for a minimum timeout period of 37.5ms (tPOKP). It remains low during VCC1 ramp-up and provides a clean enable signal for downstream regulators - critical for controlled dual-rail power sequencing in SoC-based designs.

Can the MAX6741XKZGD3-T be used in place of the MAX6744XKZGD3-T?

The MAX6741XKZGD3-T and MAX6744XKZGD3-T share identical VCC1/VCC2 thresholds, reset timeout (D3), and POK1 functionality, but differ in pinout: MAX6744 includes MR on Pin 3, while MAX6741 uses Pin 3 for VCC2 and lacks MR. Substitution requires PCB redesign; MAX6741XKZGD3-T is not a drop-in replacement for MAX6744XKZGD3-T due to missing MR functionality.

What package type and dimensions does the MAX6741XKZGD3-T use?

The MAX6741XKZGD3-T uses a 5-pin SC70-5 package measuring 1.6mm × 1.6mm × 0.9mm (height), with standard lead-free RoHS-compliant finish. This ultra-compact outline supports fine-pitch reflow assembly and is pin-compatible across the MAX6736–MAX6745 family, enabling layout reuse in multi-variant designs.