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Analog Devices Inc./Maxim Integrated MAX6807US46-T
- Part No.:
- MAX6807US46-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6807US46-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6807US46-T from Maxim Integrated is a precision voltage detector IC designed for power-supply monitoring in microprocessor-based systems. It features a factory-preset 4.6V ±2% reset threshold, active-high push-pull RESET output, and operates over -40°C to +85°C with supply current as low as 35µA. It ensures reliable power-on reset and brownout detection in battery-powered instrumentation and embedded controllers.
For engineers reviewing the MAX6807US46-T datasheet, MAX6807US46-T pinout, MAX6807US46-T application, or MAX6807US46-T equivalent, key selection criteria include reset threshold accuracy, VCC operating range down to 1.2V, manual-reset capability (SOT143 package), immunity to VCC transients, and compatibility with 5V digital logic interfaces.
Technical Context
The MAX6807US46-T implements a precision bandgap-based voltage reference comparator with internal hysteresis (±0.02V typical) to prevent output chatter near the 4.6V threshold. Its active-high push-pull RESET output guarantees logic-high state for VCC ≥ 1.2V and remains asserted while VCC falls below VTH− or MR is held high.
It integrates an 80kΩ internal pulldown resistor on the MR input (available only in SOT143 package), supports manual reset via external switch, and exhibits transient immunity up to 100V/µs on VCC with no false triggering for negative-going pulses under defined overdrive conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.6V ±2% (VTH− at +25°C); ensures reset assertion before system ICs drop below minimum operating voltage |
| Supply Voltage Range | 1.2V to 5.5V (–40°C to +85°C); enables operation during deep brownout and full 5V system startup |
| Supply Current | 35µA typical at VCC = 3.6V; minimizes quiescent load in portable/battery-powered equipment |
| RESET Output Type | Active-high, push-pull; drives CMOS/TTL loads directly without external pullup |
| Hysteresis | 0.02 × VTH− to 0.03 × VTH−; prevents oscillation during slow-rising/falling VCC transitions |
| MR Input Threshold | VIL ≤ 0.6V, VIH ≥ 0.7 × VCC; compatible with standard logic-level manual switches and control signals |
| Power-Down Delay | 30µs typical (VCC falling at 1mV/µs); provides deterministic timing for system shutdown sequencing |
Pinout & Package
MAX6807US46-T is supplied in a 4-pin SOT143 package with exposed pad (RoHS-compliant). This thermally enhanced, surface-mount package supports manual reset functionality and is optimized for space-constrained industrial and portable applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull reset output; asserts high when VCC < 4.6V or MR is high |
| 2 | GND | Ground reference for all internal circuitry and output stage |
| 3 | VCC | Positive supply input; powers internal reference, comparator, and output driver |
| 4 | MR | Active-high manual reset input; internally pulled down by 80kΩ resistor; initiates reset when driven ≥ 0.7×VCC |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.6V threshold | ±2% accuracy over temperature ensures consistent reset behavior across –40°C to +85°C |
| Active-high push-pull RESET | Eliminates need for external pullup resistor; reduces BOM count and layout area |
| Manual reset (MR) input | Integrated 80kΩ pulldown allows direct switch connection-no external bias required |
| Low 35µA supply current | Extends battery life in portable scanners and handheld instruments without compromising response time |
| Transient immunity | Immune to VCC dips ≤ 100mV overdrive at durations < 10µs-prevents false resets in noisy environments |
Applications
| Bar-Code Scanners | Intelligent Instruments |
|---|---|
Use Scenario: Battery-powered handheld scanner experiences rapid VCC sag during laser activation and motor drive pulses. IC Role / Device Role / Timing Role: Voltage detector monitors 5V rail and asserts active-high RESET to halt processor execution until stable power resumes. Use Value: Prevents corrupted scan data or firmware lockup by ensuring processor reset occurs before VCC drops below 4.508V (min threshold). | Use Scenario: Portable multimeter with microcontroller and analog front-end requires clean power-up sequence after battery insertion. IC Role / Device Role / Timing Role: Provides power-on reset signal synchronized to 5V rail rise, with hysteresis preventing bounce during slow ramp-up. Use Value: Guarantees µC initialization only after VCC exceeds 4.692V (max threshold), eliminating marginal start-up failures. |
| Critical µP and µC Power Monitoring | Portable/Battery-Powered Equipment |
Use Scenario: Industrial PLC controller must detect brownout events and initiate controlled shutdown before memory corruption occurs. IC Role / Device Role / Timing Role: Monitors main 5V supply and asserts RESET within 30µs of VCC crossing 4.6V downward, triggering watchdog timeout or safe state entry. Use Value: Enables deterministic fault recovery with guaranteed RESET validity down to VCC = 1.2V-critical for nonvolatile register preservation. | Use Scenario: Handheld medical sensor with Bluetooth LE radio draws burst current causing temporary 5V rail dip. IC Role / Device Role / Timing Role: Detects sub-threshold condition and holds µC in reset until VCC recovers above 4.6V + hysteresis, blocking erroneous BLE transmission. Use Value: Maintains data integrity by preventing RF subsystem activation during unstable power-no external RC timing network needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US46D3-T | Same 4.6V threshold, but includes watchdog timer and longer reset timeout (1.1s min) | Required where µP needs extended reset hold time after power recovery | Select MAX6315US46D3-T only if watchdog supervision or programmable delay is needed; MAX6807US46-T offers lower cost and simpler interface |
| TPS3808G33DBVR | 3.3V fixed threshold (not 4.6V); 1.8–6V supply range; 1.6µA quiescent current | Suitable for 3.3V systems; not interchangeable due to different threshold and MR absence | Choose TPS3808G33DBVR for ultra-low-power 3.3V applications; MAX6807US46-T remains optimal for 4.6V 5V-system monitoring with manual reset |
Compared with MAX6315US46D3-T and TPS3808G33DBVR, the MAX6807US46-T delivers precise 4.6V detection with integrated MR in SOT143, offering the lowest system-level complexity for 5V microcontroller reset-no external components, no timeout configuration, and guaranteed operation down to 1.2V.
Availability
MAX6807US46-T is available at Aetrix Electronics and suitable for bar-code scanners, intelligent instruments, critical µP power monitoring, and portable/battery-powered equipment requiring stable component supply and long-term lifecycle support.
Supply support for MAX6807US46-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) designs precision analog, mixed-signal, and power-management ICs for industrial, computing, communications, and consumer applications.
The MAX6806/MAX6807/MAX6808 family targets cost-sensitive, space-constrained systems requiring accurate, low-power supply monitoring-optimized for µP reset generation without external passive components.
FAQ
What is the exact reset threshold voltage of the MAX6807US46-T?
The MAX6807US46-T has a factory-trimmed nominal reset threshold of 4.6V, with guaranteed accuracy of ±2% over temperature (–40°C to +85°C). At +25°C, the electrical specification defines VTH− as 4.508V (min), 4.60V (typ), and 4.692V (max). This threshold applies to the falling VCC edge and is used to assert the active-high RESET signal.
Does the MAX6807US46-T support manual reset, and how is it implemented?
Yes, the MAX6807US46-T supports manual reset via its MR pin (Pin 4), available exclusively in the 4-pin SOT143 package. The MR input has an internal 80kΩ pulldown resistor, so it defaults low when unconnected. Driving MR high (≥ 0.7 × VCC) asserts RESET immediately-enabling operator-initiated or test-system-triggered reset without modifying the power rail.
What is the minimum VCC required for valid RESET output operation in the MAX6807US46-T?
The MAX6807US46-T guarantees valid active-high RESET output for VCC ≥ 1.2V. Below this level, RESET behavior is not specified. This ensures reliable reset assertion during brownout conditions common in battery-powered systems where VCC may sag to ~1.25V before cutoff, while still maintaining logic compatibility with 1.2V–5.5V I/O standards.
Can the MAX6807US46-T be used in place of the MAX6806US46-T or MAX6808US46-T?
No-the MAX6807US46-T is not a drop-in replacement for MAX6806US46-T (active-low push-pull) or MAX6808US46-T (active-low open-drain). Its active-high RESET output polarity and lack of open-drain structure require corresponding µP reset-input logic changes. System-level validation is mandatory; direct substitution may cause inverted or non-functional reset behavior.
What package type and pin configuration does the MAX6807US46-T use?
The MAX6807US46-T uses a 4-pin SOT143 package with top mark KABW. Pin 1 is RESET (active-high push-pull), Pin 2 is GND, Pin 3 is VCC, and Pin 4 is MR (manual reset input). This configuration supports both automatic power-monitoring and operator-initiated reset in compact PCB layouts.
MAX6807US46-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.6V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 30µs Typical
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-µMAX
MAX6807US46-T FAQ
1.How can I place an order for MAX6807US46-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6807US46-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 MAX6807US46-T reliable?
The price and inventory of MAX6807US46-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6807US46-T is usually 5 days.
3.What payment methods are accepted for MAX6807US46-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6807US46-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6807US46-T?
MAX6807US46-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6807US46-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 MAX6807US46-T?
For technical support, including MAX6807US46-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6807US46-T requirements.
6.How does Aetrix verify that MAX6807US46-T is sourced from the original manufacturer or authorized distributors?
All MAX6807US46-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 MAX6807US46-T meets industry standards.
7.What is the process for return or replacement of MAX6807US46-T?
All MAX6807US46-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6807US46-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 MAX6807US46-T part is unused and in its original packaging.
Return procedure for MAX6807US46-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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