Analog Devices Inc./Maxim Integrated MAX6762TALTD3

Overview

MAX6762TALTD3 from Maxim Integrated is a dual-voltage window detector IC that monitors both VCC (5V nominal) and VCC2 (3.3V nominal) for undervoltage/overvoltage conditions, featuring independent UV/OV open-drain outputs, 100ms minimum reset timeout, latched overvoltage output, and manual reset input - used in microprocessor power supervision for telecom and industrial control systems.

For engineers reviewing the MAX6762TALTD3 datasheet, MAX6762TALTD3 pinout, MAX6762TALTD3 application, or MAX6762TALTD3 equivalent, key selection criteria include dual-supply monitoring capability, ±5% window threshold accuracy (SET = GND), latch-enabled OV response, -40°C to +125°C operation, and TDFN-8 package compatibility with high-density PCB layouts.

Technical Context

The MAX6762TALTD3 implements two independent voltage comparators with factory-trimmed thresholds: VCC OVTH = 5.500V (min), UVTH = 4.500V (min); VCC2 OVTH2 = 3.465V (min), UVTH2 = 2.970V (min). Threshold hysteresis is fixed at 0.7%, and SET pin configures window width (±5%/±10%/±15%) via GND/VCC/biasing.

It integrates a latched overvoltage output controlled by OVLATCH, enabling persistent fault indication until cleared; MR input provides active-low manual reset with 26kΩ internal pullup and 4µs minimum pulse width; all outputs remain valid down to VCC = 1.0V, supporting brownout-safe operation.

Key Specifications

Pinout & Package

MAX6762TALTD3 is housed in an 8-pin TDFN-EP (3mm × 3mm) package with exposed pad (EP) internally connected to GND. The package supports thermal dissipation up to 1951mW at TA = +70°C and is rated for reflow soldering at +260°C (lead-free).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6761TALTD3, MAX6762TALTD3 offers open-drain UV for flexible bus interfacing; compared with TPS3808G33DBVR, it delivers true dual-rail supervision with latch and tighter timing control - making it irreplaceable in safety-critical dual-supply systems.

Availability

MAX6762TALTD3 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6762TALTD3 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 demanding environments.

The MAX6762TALTD3 belongs to the MAX6754–MAX6764 family of low-power window detectors, engineered specifically for dual-rail microprocessor supervision in automotive, industrial, and telecom systems where reliability and temperature resilience are critical.

FAQ

What is the exact VCC and VCC2 threshold voltage range for MAX6762TALTD3?

The MAX6762TALTD3 has factory-trimmed thresholds: VCC OVTH = 5.500V (min) to 5.750V (max), UVTH = 4.500V (min) to 4.625V (max); VCC2 OVTH2 = 3.465V (min) to 3.630V (max), UVTH2 = 2.970V (min) to 3.053V (max), all specified over -40°C to +125°C. These values correspond to the "TAL" suffix (VCC = 3.3V? No - per Table 2, "TA" = VCC = 3.3V, "LT" = VCC = 5V, "TAL" = VCC = 3.3V, VCC2 = 5V? Correction: Table 2 shows "TAL" is invalid; correct interpretation is "TA" = VCC = 3.3V, "L" = VCC2 = 5V → but ordering info states MAX6762TALTD3 has VCC = 5V, VCC2 = 3.3V, so suffix is "LT" - however, datasheet explicitly cites "MAX6760TALTD3-T provides VCC = 5V, VCC2 = 3.3V", confirming "TAL" denotes VCC = 5V (L), VCC2 = 3.3V (T). Thus MAX6762TALTD3 uses L (5V) and T (3.3V) thresholds as listed in Tables 1 and 2.

Does MAX6762TALTD3 support latching of the undervoltage output?

No, the MAX6762TALTD3 does not latch the undervoltage output. Only the overvoltage output (OV) is latch-capable via the OVLATCH pin. The UV output is purely level-sensitive and deasserts immediately when VCC or VCC2 rises above its respective UVTH threshold. This asymmetry allows independent handling of overvoltage faults (requiring persistent alert) versus undervoltage events (typically transient and self-clearing).

What is the function of the SET pin on MAX6762TALTD3, and how is it configured for ±5% window?

The SET pin on MAX6762TALTD3 selects the voltage window tolerance: connect SET to GND for ±5%, to VCC for ±10%, or bias to VCC/2 for ±15%. For ±5% operation, grounding SET configures the internal comparator hysteresis to produce UV/OV bands of 4.75V–5.25V (VCC) and 3.135V–3.465V (VCC2), ensuring precise detection without external components.

Can MAX6762TALTD3 operate with VCC below 1.4V?

MAX6762TALTD3 monitoring functionality requires VCC ≥ 1.4V per datasheet Note 2, but its outputs remain asserted in the correct logic state down to VCC = 1.0V. This means the device can maintain a valid reset or fault signal during deep brownout conditions, though accurate threshold comparison ceases below 1.4V - a critical feature for fail-safe system shutdown sequencing.

What package type and footprint does MAX6762TALTD3 use?

MAX6762TALTD3 is supplied in an 8-pin TDFN-EP (3mm × 3mm) package with exposed pad (EP), as confirmed in the Ordering Information table. The EP is internally connected to GND and must be soldered to a PCB thermal pad for optimal thermal performance and electrical stability. This compact, thermally enhanced package supports high-density routing in space-constrained applications like telecom line cards and automotive ECUs.