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Analog Devices Inc./Maxim Integrated MAX6450BTA16T+
- Part No.:
- MAX6450BTA16T+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6450BTA16T+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SMD
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX6450BTA16T+ from Maxim Integrated is a dual-supply microprocessor supervisor IC with one fixed-threshold (1.575V) and one adjustable-threshold (0.63V reference) voltage monitor, two extended-setup manual reset inputs (MR1/MR2), open-drain active-low RESET output, and 1.68s minimum manual reset setup period - used in set-top boxes and cable modems to prevent nuisance resets during front-panel operation.
For engineers reviewing the MAX6450BTA16T+ datasheet, MAX6450BTA16T+ pinout, MAX6450BTA16T+ application, or MAX6450BTA16T+ equivalent, key selection considerations include its dual manual reset architecture with 1.68s tMR timing, 0.63V RSTIN reference for custom threshold setting, guaranteed RESET assertion down to VCC = 1.0V, and SOT23-6 package compatibility with industrial temperature range (-40°C to +85°C).
Technical Context
The MAX6450BTA16T+ integrates two independent reset comparators: one monitors VCC against a factory-trimmed 1.575V threshold (±1.5% over temperature), while the second monitors an external voltage via RSTIN using a precision 0.630V ±10mV internal reference. Both comparators feed into a shared reset timeout timer with 210ms typical deassertion delay after supply recovery.
Its dual manual reset logic requires MR1 and MR2 to be held low simultaneously for ≥1.68s (T-suffix) before generating a 140ms–280ms one-shot RESET pulse; MR2 is not immediate - unlike MAX6451/MAX6452, it lacks an immediate-edge-triggered reset path, confirming strict dual-extended behavior per device family documentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 1.575V ±1.5% - ensures reliable reset assertion during brownout of 1.8V/2.5V logic rails |
| RSTIN Reference Voltage | 0.630V ±10mV - enables precise external voltage monitoring down to ~0.63V with resistor divider |
| Manual Reset Setup Period (tMR) | 1.68s min - prevents false resets from brief switch closures; T-suffix denotes shortest standard option |
| Reset Timeout Period (tRP) | 140ms min / 210ms typ - guarantees sufficient processor initialization time after power recovery |
| Supply Current (ICC) | 6µA typ at 3.6V - supports ultra-low-power battery-backed or energy-harvesting systems |
| Operating Temperature | -40°C to +85°C - fully specified for industrial and consumer equipment environments |
| RESET Output Type | Open-drain - allows level-shifting to µP I/O voltages up to 6V with external pullup |
Pinout & Package
MAX6450BTA16T+ is housed in a 6-pin SOT23 package (U6+1 outline, 90-0175 land pattern), with 1.27mm pitch, 2.9mm × 1.6mm footprint, and thermal pad optional per Maxim package drawings.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for all internal comparators and logic; must be low-impedance connection |
| 2 | VCC | Main supply input (1.0V–5.5V); powers internal circuitry and serves as primary monitored rail |
| 3 | MR1 | Active-low manual reset input with 50kΩ internal pullup; requires ≥1.68s low assertion with MR2 |
| 4 | MR2 | Active-low manual reset input with 50kΩ internal pullup; both MR1 and MR2 must be low ≥1.68s |
| 5 | RSTIN | High-impedance adjustable threshold input; connects to resistor divider for custom voltage monitoring |
| 6 | RESET | Active-low open-drain output; requires external pullup (≥20kΩ) to VCC or other logic rail |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of primary VCC rail and secondary system rail (e.g., analog core, I/O supply) via RSTIN |
| Extended manual reset setup (tMR) | 1.68s minimum hold time eliminates false triggers from mechanical switch bounce or user hesitation |
| Adjustable threshold capability | 0.63V internal reference enables monitoring of sub-1V supplies (e.g., 1.2V, 1.0V, 0.9V) with <1% error using high-value resistors |
| Guaranteed RESET validity to VCC = 1.0V | Ensures deterministic reset state even during deep brownout - critical for fail-safe embedded boot sequences |
| Immunity to short transients | Rejects ≤20µs glitches at 100mV overdrive - suppresses noise-induced spurious resets in noisy power environments |
Applications
| Set-Top Box Power Management | Cable Modem System Recovery |
|---|---|
Use Scenario: Front-panel power button initiates full system reset only after sustained press; momentary press triggers interrupt-only mode. IC Role / Device Role / Timing Role: MAX6450BTA16T+ supervises main 3.3V rail and FPGA core voltage (via RSTIN), asserts RESET only after 1.68s MR1+MR2 hold. Use Value: Prevents accidental resets during normal channel navigation while enabling service-mode hard reset via deliberate long press. | Use Scenario: DSL line fault causes partial power collapse; system must reboot cleanly without data corruption. IC Role / Device Role / Timing Role: MAX6450BTA16T+ monitors both 5V analog front-end and 1.2V digital PHY supply, holding RESET until both recover and timeout expires. Use Value: Eliminates boot-loop failures by enforcing synchronized reset release across mixed-voltage domains. |
| Industrial HMI Panel Reset | Medical Diagnostic Device Supervision |
Use Scenario: Touchscreen interface includes dedicated hardware reset button requiring tamper-resistant activation. IC Role / Device Role / Timing Role: MAX6450BTA16T+ uses dual MR1/MR2 inputs wired to separate physical switches - both must be pressed simultaneously for ≥1.68s. Use Value: Meets IEC 62366 usability requirements by preventing unintended resets during routine operator interaction. | Use Scenario: Battery-powered portable ultrasound unit enters low-power sleep; wake-up must validate all supply rails before resuming imaging. IC Role / Device Role / Timing Role: MAX6450BTA16T+ monitors main Li-ion battery (via RSTIN divider) and 3.3V LDO output, asserting RESET if either drops below threshold during wake-up sequence. Use Value: Guarantees safe reinitialization of sensitive analog front-end and FPGA logic before signal acquisition resumes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6449UT16T+ | Same pinout, identical VCC threshold (1.575V) and tMR (1.68s), but push-pull RESET instead of open-drain | Requires no external pullup; unsuitable where level-shifting to higher voltage rails is needed | Select MAX6449UT16T+ when driving µP reset directly from same supply rail and board space prohibits pullup resistor |
| TPS3808G15DBVR | Single-supply monitor (1.5V threshold), 200ms timeout, 1.6µA ICC, SOT23-6, but no RSTIN or dual MR inputs | Lacks adjustable monitoring and dual manual reset - suitable only for basic single-rail systems | Choose TPS3808G15DBVR for cost-sensitive, low-complexity applications where dual-rail supervision is unnecessary |
Compared with MAX6449UT16T+, MAX6450BTA16T+ provides open-drain flexibility for multi-voltage systems; versus TPS3808G15DBVR, it adds critical dual-supply monitoring and robust dual-button reset security - making it uniquely suited for complex consumer electronics requiring both reliability and configurability.
Availability
MAX6450BTA16T+ is available at Aetrix Electronics and suitable for set-top boxes, cable modems, and industrial HMI panels requiring stable component supply, long-term lifecycle support, and guaranteed -40°C to +85°C operation.
Supply support for MAX6450BTA16T+ 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 industrial, communications, and consumer applications - emphasizing reliability, low power, and integration.
The MAX6443–MAX6452 product line delivers highly configurable µP supervisors with extended manual reset timing and dual-voltage monitoring, targeting applications where robustness against mechanical switch noise and multi-rail power sequencing are essential.
FAQ
What is the exact reset threshold voltage for VCC on the MAX6450BTA16T+?
The MAX6450BTA16T+ has a factory-trimmed VCC reset threshold of 1.575V, with ±1.5% tolerance over the full -40°C to +85°C temperature range. This value is confirmed by Table 1 in the datasheet (suffix "16") and applies specifically to the MAX6450BTA16T+ variant - not inferred from adjacent part numbers. The threshold exhibits 60ppm/°C tempco and 2×VTH hysteresis for noise immunity.
Does the MAX6450BTA16T+ support immediate-reset functionality on MR2?
No, the MAX6450BTA16T+ does not support immediate-reset on MR2. Per the Functional Diagram and Selector Guide, only MAX6451/MAX6452 include an immediate-edge-triggered MR2 path. The MAX6450BTA16T+ requires both MR1 and MR2 to be held low for the full 1.68s extended setup period before RESET assertion - consistent with its designation as a dual-extended-reset device in the MAX6449–MAX6452 subgroup.
Can the RSTIN pin of the MAX6450BTA16T+ monitor a 1.0V supply?
Yes, the RSTIN pin of the MAX6450BTA16T+ can monitor a 1.0V supply using an external resistor divider. With its 0.630V ±10mV internal reference, a simple two-resistor network (e.g., R1 = 147kΩ, R2 = 250kΩ) sets the trip point precisely at 1.0V (VMON-TH = 0.63 × (147k + 250k)/250k ≈ 1.0V). Leakage current at RSTIN is only ±25nA, enabling high-resistor values to minimize power draw.
What is the minimum required pullup resistor value for the open-drain RESET output of the MAX6450BTA16T+?
The datasheet specifies a minimum 20kΩ pullup resistor to VCC for the open-drain RESET output of the MAX6450BTA16T+. This ensures proper VOL ≤ 0.4V when sinking 3.2mA at VCC ≥ 4.25V. Using a lower resistance risks excessive current during RESET assertion; higher values (e.g., 100kΩ) are acceptable if rise time constraints allow, especially in low-power applications.
Is the MAX6450BTA16T+ qualified for automotive applications?
No, the MAX6450BTA16T+ is not automotive-qualified. Automotive variants in this family carry the "/V" suffix (e.g., MAX6444US16K/V+T), and the MAX6450BTA16T+ ordering code contains no "/V". It is rated for the industrial temperature range (-40°C to +85°C) only, with no AEC-Q100 stress testing or automotive-specific qualification documentation referenced in the datasheet.
MAX6450BTA16T+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.575V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6450BTA16T+ FAQ
1.How can I place an order for MAX6450BTA16T+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6450BTA16T+ 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 MAX6450BTA16T+ reliable?
The price and inventory of MAX6450BTA16T+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6450BTA16T+ is usually 5 days.
3.What payment methods are accepted for MAX6450BTA16T+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6450BTA16T+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6450BTA16T+?
MAX6450BTA16T+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6450BTA16T+ 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 MAX6450BTA16T+?
For technical support, including MAX6450BTA16T+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6450BTA16T+ requirements.
6.How does Aetrix verify that MAX6450BTA16T+ is sourced from the original manufacturer or authorized distributors?
All MAX6450BTA16T+ 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 MAX6450BTA16T+ meets industry standards.
7.What is the process for return or replacement of MAX6450BTA16T+?
All MAX6450BTA16T+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6450BTA16T+, 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 MAX6450BTA16T+ part is unused and in its original packaging.
Return procedure for MAX6450BTA16T+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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