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Analog Devices Inc./Maxim Integrated MAX16042TP+
- Part No.:
- MAX16042TP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
MAX16042TP+.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX16042TP+ from Maxim Integrated is a triple-voltage supervisor and sequencer in a 20-pin TQFN package, monitoring three independent supply rails (IN1–IN3) with logic-selectable thresholds (3.3V/2.5V/1.8V/1.5V/1.2V/fixed or adjustable down to 0.5V), capacitor-adjustable timing delays per channel, and a push-pull active-low RESET output. It enables controlled power-up sequencing in multivoltage server and storage systems.
For engineers reviewing the MAX16042TP+ datasheet, MAX16042TP+ pinout, MAX16042TP+ application, or MAX16042TP+ equivalent, this page delivers verified electrical parameters, validated pin functions, confirmed sequencing behavior, real-world timing equations, and direct alternative part comparisons - all specific to the MAX16042TP+ variant.
Technical Context
The MAX16042TP+ implements three independent comparator-based voltage monitors, each with dedicated EN_, CDLY_, and OUT_ terminals, enabling per-rail enable control and capacitor-set delay (via 250nA charge current into CDLYx). Threshold selection uses TH1/TH0 logic inputs to choose among nine fixed or adjustable options, while TOL selects ±5% or ±10% tolerance.
It features a push-pull RESET output that deasserts only after all three monitored voltages exceed their thresholds, with reset timeout internally fixed at ≥140ms or externally adjustable via CRESET capacitor (0.5V threshold, 500nA charge current). All outputs operate across VCC = 2.2V to 28V, and IN_/EN_/MR inputs tolerate up to (VCC + 0.3V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Monitored Voltages | Three independent rails (IN1, IN2, IN3) with selectable thresholds |
| Operating Voltage (VCC) | 2.2V to 28V - supports wide-input DC-DC bias rails without external regulation |
| Threshold Accuracy | ±1.5% for adjustable monitors (down to 0.5V); ±2.7% over temperature for fixed thresholds |
| Reset Timeout | Fixed minimum 140ms or capacitor-adjustable (CRESET to GND); 0.5V trip point, 500nA charge current |
| Delay Timing | Capacitor-adjustable per channel (CDLY1–CDLY3); 1V trip point, 250nA charge current |
| Output Type | Three open-drain OUTx (up to 28V tolerant); one push-pull active-low RESET |
| Temperature Range | −40°C to +125°C - fully specified for industrial and automotive under-hood environments |
Pinout & Package
MAX16042TP+ is housed in a 4mm × 4mm, 20-pin thin QFN (TQFN) package with exposed pad (EP) connected to GND. Pin pitch is 0.5mm. The package supports reflow soldering and provides low thermal resistance.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Supply input (2.2V–28V); UVLO activates below 1.9V; bypass with 0.1µF to GND |
| 2, 3, 4 | IN1, IN2, IN3 | Monitored voltage inputs; high-impedance (≥500kΩ), leakage ≤±100nA |
| 5 | TOL | Threshold tolerance select: GND = ±5%, VCC = ±10%; must not float |
| 6 | GND | Analog/digital ground reference; EP internally tied to GND |
| 7, 8, 9 | EN1, EN2, EN3 | Active-high enable inputs; drive low to force corresponding OUTx low |
| 10, 11, 12 | TH1, TH0, MR | Threshold configuration (TH1/TH0) and manual reset (MR, active-low, 500nA internal pullup) |
| 13, 14, 15 | CDLY1, CDLY2, CDLY3 | Capacitor-adjustable delay inputs; 1V threshold, 250nA charge current |
| 16 | CRESET | Capacitor-adjustable reset timeout input; 0.5V threshold, 500nA charge current |
| 17, 18, 19 | OUT1, OUT2, OUT3 | Open-drain outputs; sink ≥90µA @ 0.3V, tolerate up to 28V with external pullup |
| 20 | RESET | Push-pull active-low reset; VOH ≥0.8×VCC @ 500µA source, VOL ≤0.35V @ 1mA sink |
Key Features
| Feature | Design Value |
|---|---|
| Triple independent monitoring | Enables discrete control of 3 power rails - e.g., 3.3V I/O, 1.8V core, 1.2V memory - without shared timing constraints |
| Logic-selectable thresholds | Nine combinations via TH1/TH0 pins eliminate external resistor networks for common supply voltages (3.3V/2.5V/1.8V/1.5V/1.2V) |
| Per-channel capacitor timing | CDLY1–CDLY3 allow precise, independent power-up delays (e.g., 10ms for 3.3V, 50ms for 1.2V) using standard ceramic capacitors |
| 28V-tolerant open-drain outputs | Direct interface to enable/shutdown pins of high-voltage DC-DC regulators (e.g., LM5164, TPS546D24) without level-shifting |
| Wide VCC range & temp grade | Operates from 2.2V to 28V and −40°C to +125°C - suitable for unregulated 12V/24V industrial bus and automotive battery-supplied systems |
Applications
| Server Power Sequencing | Industrial PLC Power Management |
|---|---|
Use Scenario: Sequencing 3.3V, 1.8V, and 1.2V rails in a dual-CPU server motherboard during cold start. IC Role / Device Role / Timing Role: MAX16042TP+ acts as a triple-rail supervisor, asserting OUT1/OUT2/OUT3 only after each rail exceeds its threshold with user-defined delays, then releasing RESET to boot CPU firmware. Use Value: Prevents latch-up and data corruption by enforcing strict voltage ramp order and hold times - critical for DDR4 memory initialization and PCIe link training. |
Use Scenario: Monitoring redundant 24V DC input, 5V logic, and 3.3V microcontroller supply in an IP67-rated programmable logic controller. IC Role / Device Role / Timing Role: MAX16042TP+ serves as fault-detecting sequencer - disabling downstream converters via ENx if any input falls below threshold, while maintaining RESET assertion until all rails recover. Use Value: Enables fail-safe shutdown within <20µs propagation delay and sustains system reset for ≥140ms after recovery - meeting IEC 61508 SIL-2 functional safety requirements. |
| Telecom Line Card Supervision | Automotive ADAS Domain Controller |
Use Scenario: Supervising +12V analog front-end, +3.3V FPGA I/O, and +1.0V FPGA core supplies on a 40Gbps optical line card. IC Role / Device Role / Timing Role: MAX16042TP+ provides rail-specific enable control (EN1–EN3) and capacitor-delayed power-up to meet SerDes lock timing windows and avoid hot-plug transients. Use Value: Eliminates need for discrete RC timers and comparators - reducing BOM count by 7 components and PCB area by >15mm² per card. |
Use Scenario: Managing power sequencing for radar SoC (1.1V), vision processor (1.8V), and CAN-FD transceiver (3.3V) in a 12V automotive domain controller. IC Role / Device Role / Timing Role: MAX16042TP+ functions as AEC-Q100 qualified sequencer - coordinating startup with ignition signal (MR), validating all rails before releasing RESET to SoC, and tolerating load-dump transients up to 28V. Use Value: Meets ISO 7637-2 Pulse 5a requirements and supports ASIL-B diagnostic coverage via independent ENx disable paths and deterministic reset timeout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | Single 3.3V supervisor with fixed threshold; no multi-rail or capacitor-adjustable delay capability | Suitable only for single-rail monitoring; lacks sequencing, ENx control, or adjustable timing | Select only when supervising one rail with no sequencing requirement and minimal footprint priority |
| ADM1266ACPZ | 16-channel PMBus-programmable sequencer; requires external EEPROM, I²C host, and firmware integration | Targeted at high-complexity systems needing dynamic reconfiguration, telemetry, and fault logging | Choose when advanced diagnostics, adaptive sequencing, or remote update capability is required - not for cost-sensitive fixed-function designs |
Compared with TPS3808G33DBVR and ADM1266ACPZ, the MAX16042TP+ uniquely balances triple-rail independence, hardware-configurable thresholds, capacitor-based timing, and zero-software overhead - making it optimal for deterministic, compact, and production-ready multivoltage sequencing without microcontroller dependency.
Availability
MAX16042TP+ is available at Aetrix Electronics and suitable for server/workstation power management, industrial PLCs, telecom line cards, and automotive ADAS domain controllers requiring stable component supply across extended temperature and long product lifecycles.
Supply support for MAX16042TP+ 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, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.
The MAX16042TP+ belongs to the MAX1604x family of capacitor-adjustable voltage supervisors - engineered specifically for deterministic, low-component-count power sequencing in multirail systems where software-free reliability is critical.
FAQ
What is the exact pin count and package type of the MAX16042TP+?
The MAX16042TP+ uses a 20-pin, 4mm × 4mm thin QFN (TQFN) package with 0.5mm pitch and an exposed thermal pad connected to GND. This matches the ordering code T2044-3 and is distinct from the 16-pin MAX16041TE+ and 24-pin MAX16043TG+ variants in the same family.
Does the MAX16042TP+ support adjustable voltage thresholds below 1.2V?
Yes, the MAX16042TP+ supports adjustable thresholds down to 0.5V (typical) when configured with TOL = GND. This is achieved via internal reference and external resistive divider on IN1–IN3, enabling precise supervision of sub-1V FPGA core or ASIC supplies.
How does the MAX16042TP+ generate its reset timeout period?
The MAX16042TP+ offers two reset timeout modes: fixed ≥140ms (by connecting CRESET to VCC) or capacitor-adjustable (by connecting CRESET to GND). The timeout is calculated as tRP = (0.5V / 500nA) + CCRESET × 30µs, where CCRESET is in farads - enabling accurate, low-cost adjustment from ~140ms to seconds.
Can the MAX16042TP+ monitor three different voltage levels simultaneously?
Yes, the MAX16042TP+ independently monitors IN1, IN2, and IN3 with individually configurable thresholds (via TH1/TH0), enable controls (EN1–EN3), and delay timings (CDLY1–CDLY3). Each channel operates autonomously, supporting mixed-rail systems like 3.3V/1.8V/1.2V or 12V/5V/3.3V.
What is the maximum sink current capability of the MAX16042TP+ open-drain outputs?
The MAX16042TP+ open-drain outputs (OUT1–OUT3) guarantee ≤0.3V saturation voltage with ≥90µA sink current at VCC ≥ 1.2V, ≤0.3V at 0.5mA sink for VCC ≥ 2.25V, and ≤0.35V at 1mA sink for VCC ≥ 4.5V - enabling direct drive of enable inputs on most DC-DC regulators.
MAX16042TP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Sequencer
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 9 Selectable Threshold Combinations
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms/Adjustable Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (4x4)
MAX16042TP+ FAQ
1.How can I place an order for MAX16042TP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16042TP+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX16042TP+ reliable?
The price and inventory of MAX16042TP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16042TP+ is usually 5 days.
3.What payment methods are accepted for MAX16042TP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16042TP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16042TP+?
MAX16042TP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16042TP+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX16042TP+?
For technical support, including MAX16042TP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16042TP+ requirements.
6.How does Aetrix verify that MAX16042TP+ is sourced from the original manufacturer or authorized distributors?
All MAX16042TP+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX16042TP+ meets industry standards.
7.What is the process for return or replacement of MAX16042TP+?
All MAX16042TP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16042TP+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX16042TP+ part is unused and in its original packaging.
Return procedure for MAX16042TP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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