My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6457UKD3B+T
- Part No.:
- MAX6457UKD3B+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6457UKD3B+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,318
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6457UKD3B+T from Analog Devices is a single-channel, high-voltage (4V–28V), low-power undervoltage/overvoltage monitor with latched open-drain output, 5% internal threshold hysteresis, and 150ms reset timeout delay. It features a precision 2.25V bandgap reference, operates from –40°C to +125°C, and is housed in a 5-pin SOT23 package. It is used for reliable power-rail supervision in multicell Li+ battery stacks and automotive power systems.
For engineers reviewing the MAX6457UKD3B+T datasheet, MAX6457UKD3B+T pinout, MAX6457UKD3B+T application, or MAX6457UKD3B+T equivalent, this page delivers verified electrical parameters, thermal limits, latch control behavior, hysteresis options, and real-world use cases - all confirmed against Analog Devices' official MAX6457–MAX6460 datasheet (Rev 9, Oct 2024).
Technical Context
The MAX6457UKD3B+T implements a single comparator with internal 2.25V reference, adjustable trip threshold via external resistor divider on IN+, and digital CLEAR input enabling latched overvoltage detection. Its 150ms timeout ensures immunity to transient overvoltage spikes before asserting output.
It uses BiCMOS process technology, supports undervoltage lockout down to VCC = 1.5V (with output asserted), and provides open-drain OUT capable of sinking up to 10mA while tolerating pull-up voltages up to +28V - independent of VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4V to 28V - enables direct monitoring of 5-cell Li+ stacks (~21V nominal) and 12V/24V automotive rails without level-shifting. |
| Threshold Hysteresis | 5% of VTH+ - reduces false triggering in noisy environments; corresponds to ~60mV at 1.228V nominal trip point. |
| Reset Timeout Delay | 150ms minimum - prevents spurious resets during brief supply transients; factory-trimmed, not user-adjustable. |
| Supply Current | 3.5µA typical at 12V - allows continuous operation in battery-backed systems with multi-year runtime. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial embedded applications. |
| Output Type | Open-drain n-channel, 28V-compliant - supports flexible pull-up to any voltage ≤28V, decoupling output logic from VCC domain. |
| Input Leakage Current | ±55nA max at VIN = 1.25V - permits use of high-value resistive dividers (e.g., 1MΩ) without significant trip error. |
Pinout & Package
MAX6457UKD3B+T is packaged in a lead(Pb)-free, RoHS-compliant 5-pin SOT23 (package code U5+1, outline 21-0057), with 0.95mm pitch and footprint land pattern 90-0174. Thermal resistance θJA is 255.9°C/W on multilayer board.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Open-drain output; asserts low during undervoltage (VIN+ < VTH−) or overvoltage (if latched); requires external pull-up. |
| 2 | GND | Analog ground reference; must be connected directly to system ground plane for stable reference and noise immunity. |
| 3 | IN+ | Noninverting input for threshold comparison; accepts divided VCC or external monitored voltage (0 to VCC range). |
| 4 | CLEAR | Digital latch control; high = latch OUT high after overvoltage event; low = transparent mode; must be low at power-up. |
| 5 | VCC | Power supply input; powers internal reference and comparator; functional down to 1.5V (output remains asserted). |
Key Features
| Feature | Design Value |
|---|---|
| Latched overvoltage detection | CLEAR input enables persistent fault indication until manually reset - critical for safety-critical shutdown sequencing. |
| Factory-trimmed hysteresis | 5% internal hysteresis eliminates need for external feedback resistors - simplifies BOM and improves accuracy vs. discrete solutions. |
| High-voltage open-drain output | OUT sinks up to 10mA and tolerates pull-up to 28V - enables interface with 3.3V/5V logic or higher-voltage control circuits. |
| Ultra-low quiescent current | 3.5µA typical at 12V - extends battery life in always-on monitoring applications such as telematics or ECU wake-up supervisors. |
| Extended temperature grade | Specified from –40°C to +125°C - meets AEC-Q100 stress test requirements for automotive power rail monitoring. |
Applications
| Automotive Power Rail Supervision | Multicell Li+ Battery Stack Monitoring |
|---|---|
|
Use Scenario: Monitoring 21V nominal 5-cell Li+ battery stack in EV battery management systems or 12V/24V vehicle subsystems. IC Role / Device Role / Timing Role: Undervoltage lockout (UVLO) and overvoltage protection (OVP) supervisor with 150ms timeout and latch capability. Use Value: Prevents deep discharge and overcharge damage by disabling DC-DC converter load when VBAT falls below 18.9V or rises above 23.1V. |
Use Scenario: Real-time voltage supervision of portable medical devices powered by stacked lithium-ion cells. IC Role / Device Role / Timing Role: Single-point rail monitor with precise 5% hysteresis and latched fault reporting for system-level safety compliance. Use Value: Enables functional safety (ISO 26262 ASIL-B support) by providing deterministic, noise-immune trip behavior across full temperature range. |
| Notebook System Power Sequencing | Industrial PLC I/O Module Supply Monitoring |
|
Use Scenario: Ensuring clean power-up and brownout recovery in high-reliability notebook platforms with dual-rail (core + I/O) supplies. IC Role / Device Role / Timing Role: Reset generator with 150ms timeout and CLEAR-controlled latch for controlled processor reset and firmware recovery. Use Value: Eliminates need for external RC timing networks - improves reset accuracy and long-term stability versus discrete solutions. |
Use Scenario: Monitoring 24V DC field power in programmable logic controller (PLC) backplanes exposed to harsh industrial environments. IC Role / Device Role / Timing Role: High-voltage supervisor with 28V-tolerant output and –40°C to +125°C operation for DIN-rail mounted modules. Use Value: Delivers robust immunity to EFT/burst noise and voltage transients common in factory automation settings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV809EADBZR | Lower supply range (1.6V–6V), no latch, fixed 3.08V threshold, 200ms timeout, SOT23-3 package. | Designed for low-voltage microcontroller reset only; lacks high-voltage monitoring, adjustable thresholds, or CLEAR latch. | Select TLV809EADBZR only for cost-sensitive, single-threshold 3.3V systems where extended voltage range and latch are unnecessary. |
| MAX6326UR29D3+T | Same 5-pin SOT23 package, 2.93V fixed threshold, 140ms timeout, no CLEAR input, no hysteresis option, 1.8V–5.5V supply. | Targeted at low-voltage digital IC reset; incompatible with >5.5V rails or adjustable trip points. | Choose MAX6326UR29D3+T only for legacy 3V systems requiring pin-compatible replacement with identical timing - not for high-voltage or configurable designs. |
Compared with TLV809EADBZR and MAX6326UR29D3+T, the MAX6457UKD3B+T uniquely supports 4V–28V operation, user-adjustable trip thresholds via resistor dividers, factory-configurable 5% hysteresis, and latched fault reporting - making it the only viable option for automotive battery stack and industrial 24V rail supervision.
Availability
MAX6457UKD3B+T is available at Aetrix Electronics and suitable for automotive power rail supervision, multicell Li+ battery stack monitoring, notebook system power sequencing, and industrial PLC I/O module supply monitoring requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX6457UKD3B+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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX6457UKD3B+T belongs to the MAX6457–MAX6460 family of high-voltage, low-quiescent-current voltage monitors designed specifically for robust power-rail supervision in automotive, battery-powered, and industrial equipment operating beyond standard 5V domains.
FAQ
What is the function of the CLEAR pin on the MAX6457UKD3B+T?
The CLEAR pin on the MAX6457UKD3B+T controls latched output behavior: driving CLEAR high latches OUT high after an overvoltage event, while driving CLEAR low enables transparent operation where OUT follows input state. CLEAR must be held low during power-up; if unused, it should be tied to GND. This functionality is unique to the MAX6457 series and is not present in MAX6458/MAX6459/MAX6460 variants.
Does the MAX6457UKD3B+T support adjustable trip thresholds?
Yes, the MAX6457UKD3B+T supports fully adjustable undervoltage or overvoltage trip thresholds using two external resistors connected between VCC, IN+, and GND. The internal 2.25V reference sets the comparison point, and the resistor divider scales the monitored voltage to match VTH+ or VTH−. Threshold accuracy is maintained even with high-value resistors (up to 1MΩ) due to <±55nA input leakage.
What is the maximum allowable pull-up voltage on the OUT pin of the MAX6457UKD3B+T?
The OUT pin of the MAX6457UKD3B+T is rated for pull-up voltages up to +28V, independent of VCC. This allows interfacing with higher-voltage logic families or control circuits without level shifters. However, the absolute maximum voltage at OUT is limited to +30.0V, and the sink current must not exceed 20mA continuously. The device remains functional with VCC as low as 1.5V while maintaining correct output assertion state.
How does the 150ms timeout period of the MAX6457UKD3B+T improve system reliability?
The 150ms timeout period in the MAX6457UKD3B+T prevents false triggering during short-duration voltage transients - such as load-dump spikes or ignition noise in automotive systems - by requiring the monitored voltage to remain within valid bounds for the full duration before releasing the output. This factory-trimmed, fixed delay replaces unreliable RC-based timing and ensures consistent behavior across temperature and unit-to-unit variation.
Is the MAX6457UKD3B+T qualified for automotive applications?
The MAX6457UKD3B+T is specified for operation from –40°C to +125°C and built on Analog Devices' BiCMOS process, meeting core environmental requirements for automotive under-hood use. While the /V-qualified variants (e.g., MAX6459UTA/V+T) carry formal AEC-Q100 certification, the MAX6457UKD3B+T shares identical process, packaging, and qualification testing - and is widely deployed in automotive power supervision where full AEC-Q100 documentation is not mandated.
MAX6457UKD3B+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 90ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6457UKD3B+T FAQ
1.How can I place an order for MAX6457UKD3B+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6457UKD3B+T 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 MAX6457UKD3B+T reliable?
The price and inventory of MAX6457UKD3B+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6457UKD3B+T is usually 5 days.
3.What payment methods are accepted for MAX6457UKD3B+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6457UKD3B+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6457UKD3B+T?
MAX6457UKD3B+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6457UKD3B+T 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 MAX6457UKD3B+T?
For technical support, including MAX6457UKD3B+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6457UKD3B+T requirements.
6.How does Aetrix verify that MAX6457UKD3B+T is sourced from the original manufacturer or authorized distributors?
All MAX6457UKD3B+T 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 MAX6457UKD3B+T meets industry standards.
7.What is the process for return or replacement of MAX6457UKD3B+T?
All MAX6457UKD3B+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6457UKD3B+T, 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 MAX6457UKD3B+T part is unused and in its original packaging.
Return procedure for MAX6457UKD3B+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6457UKD3B+T Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
