Analog Devices Inc./Maxim Integrated MAX16008TP+T

Overview

MAX16008TP+T from Maxim Integrated is a quad window voltage detector IC designed for multivoltage system monitoring in servers and telecom equipment. It monitors four independent supply rails with user-adjustable undervoltage/overvoltage thresholds down to 0.4V, ±1.5% accuracy over -40°C to +125°C, and features eight open-drain outputs (UVOUT1–4, OVOUT1–4) with 30µA internal pullups. It supports margin testing via active-low MARGIN input and operates from 1.0V to 5.5V VCC.

For engineers reviewing the MAX16008TP+T datasheet, MAX16008TP+T pinout, MAX16008TP+T application, or MAX16008TP+T equivalent, key selection considerations include its 20-pin TQFN package, absence of RESET/MR/SRT pins (distinguishing it from MAX16009), quad-window detection architecture, and suitability for high-reliability power-rail supervision where adjustable thresholds and wide temperature operation are required.

Technical Context

The MAX16008TP+T implements four independent window comparators, each configured using three external resistors to set upper (OVINx) and lower (UVINx) trip thresholds. Its comparator inputs exhibit ≤±100nA bias current and 0.5% hysteresis, enabling stable detection of low-voltage rails as low as 0.4V with minimal external component error.

All eight fault outputs (UVOUT1–4, OVOUT1–4) are open-drain with internal 30µA pullup to VCC, supporting wire-ORed fault aggregation and level-shifting up to 5.5V. The device includes undervoltage lockout (VUVLO = 1.62V to 1.98V) and guarantees correct logic state down to VCC = 1.0V, ensuring reliable operation during brownout conditions.

Key Specifications

Pinout & Package

MAX16008TP+T is housed in a 4mm × 4mm, 20-pin thin QFN package with exposed pad (EP), RoHS-compliant and rated for -40°C to +125°C operation. The EP is internally connected to GND and must be soldered to the PCB ground plane for thermal management.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad voltage monitoring applications.

Compared with MAX16009TG+, MAX16008TP+T provides identical quad-window detection and accuracy but omits reset coordination features-making it optimal for pure fault-signaling applications. Compared with TPS3307-18DGNR, MAX16008TP+T offers full threshold programmability and four independent rails, essential for custom multivoltage ASICs and high-density server boards.

Availability

MAX16008TP+T is available at Aetrix Electronics and suitable for server power sequencing, telecom line card supervision, and industrial PLC backplane applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX16008TP+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, communications, and computing markets.

The MAX16008/MAX16009 product line delivers high-accuracy, adjustable window voltage detection in compact packages for multirail systems where reliability, precision, and thermal robustness are critical.

FAQ

What is the minimum operating voltage for MAX16008TP+T to guarantee correct output logic states?

The MAX16008TP+T guarantees correct output logic states down to VCC = 1.0V, as specified in the Electrical Characteristics table under "UVLO (Undervoltage Lockout)" and Note 2. This ensures reliable fault signaling even during deep brownout conditions where other supervisors may fail. The device remains functional across its full 1.0V to 5.5V supply range, and MAX16008TP+T maintains output integrity without requiring external reset generators or auxiliary supplies.

How many independent voltage rails can MAX16008TP+T monitor simultaneously?

MAX16008TP+T monitors four independent voltage rails simultaneously using its eight dedicated input pins (UVIN1–4 and OVIN1–4) and eight corresponding open-drain outputs (UVOUT1–4 and OVOUT1–4). Each rail is supervised as a full window (undervoltage + overvoltage), enabling comprehensive fault coverage for complex multivoltage systems like servers and telecom equipment. No additional external components are required to achieve quad-rail supervision with MAX16008TP+T.

Does MAX16008TP+T include a reset output or manual reset input?

No, MAX16008TP+T does not include a RESET output, manual reset (MR) input, or set-reset timeout (SRT) input. These features are exclusive to the MAX16009 variant (e.g., MAX16009TG+), which uses a 24-pin TQFN package. MAX16008TP+T is strictly a quad window voltage detector with eight fault outputs and a MARGIN enable pin - making it ideal for applications requiring only rail fault signaling without system-level reset coordination.

What is the purpose of the MARGIN pin on MAX16008TP+T?

The MARGIN pin on MAX16008TP+T is an active-low input that disables all UVOUTx and OVOUTx outputs when asserted (pulled low), forcing them into a high-impedance state regardless of monitored rail conditions. This enables in-system voltage margin testing during production or field diagnostics. When deasserted, outputs resume normal monitoring behavior after a 50µs propagation delay. MAX16008TP+T's MARGIN pin is internally pulled up to VCC, so it may be left unconnected if unused.

Can MAX16008TP+T monitor supply voltages below 1.0V?

Yes, MAX16008TP+T can monitor supply voltages as low as 0.388V (minimum threshold specification) using external resistor dividers on its UVINx/OVINx inputs. While the device itself requires VCC ≥ 1.0V to operate, its analog inputs accept sub-1V signals directly - enabling supervision of modern low-voltage rails such as 0.8V GPU cores or 0.6V AI accelerator supplies. The ±1.5% threshold accuracy and 0.5% hysteresis ensure stable detection without oscillation, and MAX16008TP+T supports this capability across its full -40°C to +125°C temperature range.