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Analog Devices Inc./Maxim Integrated MAX6737XKZWD3
- Part No.:
- MAX6737XKZWD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX6737XKZWD3.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,184
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Product details
Overview
The MAX6737XKZWD3 from Maxim Integrated is a dual fixed-voltage microprocessor supervisor IC with push-pull active-low reset output, manual reset input, and factory-trimmed thresholds of 2.313V (VCC1) and 1.665V (VCC2). It asserts reset when either supply falls below its threshold, maintains reset for ≥150ms after recovery, and draws only 6µA supply current. It is used in portable multivoltage systems such as GPS equipment and PDAs to ensure reliable power-on initialization and brownout protection.
For engineers reviewing the MAX6737XKZWD3 datasheet, MAX6737XKZWD3 pinout, MAX6737XKZWD3 application, or MAX6737XKZWD3 equivalent, key selection criteria include its SC70-5 package, push-pull RESET output, dual fixed thresholds, 150ms timeout, and -40°C to +85°C industrial temperature range - all critical for battery-powered embedded designs requiring low quiescent current and precise voltage monitoring.
Technical Context
The MAX6737XKZWD3 implements two independent precision voltage comparators with internal 0.5% hysteresis, each monitoring VCC1 and VCC2 against factory-set thresholds. Its reset logic includes a digital timeout counter that restarts on any threshold violation during the 150ms minimum assertion period.
It features an internal 1.5kΩ pullup on the MR pin and guarantees valid RESET output state while either VCC1 or VCC2 remains above 1.2V. The push-pull RESET output is referenced to VCC1 and drives high to ≥0.8×VCC1 at 800µA source current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.313V ±0.092V (factory-trimmed; enables reliable I/O supply monitoring at 2.5V nominal rails) |
| VCC2 Threshold | 1.665V ±0.066V (factory-trimmed; supports core supply monitoring for 1.8V/1.65V processors) |
| Reset Timeout | 150ms min (guarantees µP reset hold time sufficient for full system stabilization) |
| Supply Current | 6µA typical (enables multi-year battery life in always-on portable devices) |
| Operating Temp | -40°C to +85°C (qualified for industrial and automotive cabin environments) |
| Package | 5-pin SC70 (1.6mm × 1.6mm footprint; saves PCB area vs. SOT23) |
| RESET Output | Push-pull active-low (eliminates need for external pullup; simplifies interface to µP reset pins) |
Pinout & Package
MAX6737XKZWD3 is housed in a 5-pin SC70-5 package (1.6mm × 1.6mm × 0.9mm), optimized for space-constrained portable applications. Pin 1 is RESET, Pin 2 is GND, Pin 3 is MR, Pin 4 is VCC2, and Pin 5 is VCC1 - matching the standard SC70 pinout for drop-in compatibility across the MAX6736–MAX6745 family.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push-pull reset output | Drives µP reset pin directly; no external pullup required; sinks 3.2mA / sources 800µA |
| 2 - GND | Analog/digital ground reference | Single ground connection for all internal comparators and logic; must be low-impedance |
| 3 - MR | Manual reset input (active-low) | Internal 1.5kΩ pullup to VCC1; accepts CMOS levels or pushbutton-to-GND; 1µs minimum pulse width |
| 4 - VCC2 | Secondary supply voltage input | Monitors core supply (e.g., 1.8V/1.65V); threshold = 1.665V; valid down to 0.9V operation |
| 5 - VCC1 | Primary supply voltage input | Monitors I/O supply (e.g., 2.5V/3.3V); threshold = 2.313V; supplies internal circuitry and RESET output |
Key Features
| Feature | Design Value |
|---|---|
| Dual fixed-voltage supervision | Simultaneously monitors VCC1 (2.313V) and VCC2 (1.665V) without external resistors or calibration |
| 150ms minimum reset timeout | Ensures µP completes power-up sequence before release; timer restarts on any threshold breach |
| 6µA ultra-low supply current | Extends battery life in coin-cell or Li-ion powered devices; ICC1 + ICC2 ≤10µA at 25°C |
| Push-pull RESET output | Eliminates external pullup resistor; reduces BOM count and layout complexity |
| MR input with internal pullup | Enables momentary switch reset without external components; debounced via internal timing |
Applications
| Portable GPS Receivers | Notebook Computer I/O Rails |
|---|---|
Use Scenario: Ensures clean boot and brownout recovery in handheld GPS units powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting RESET when 2.8V I/O rail or 1.8V baseband processor rail drops below threshold. Use Value: Prevents firmware corruption during battery sag; 6µA current extends runtime between charges. | Use Scenario: Monitors 3.3V USB/SATA I/O supply and 1.5V CPU core supply during power-up sequencing. IC Role / Device Role / Timing Role: Provides synchronized reset assertion until both rails stabilize above 2.313V and 1.665V for ≥150ms. Use Value: Guarantees proper initialization order without external timing components or FPGA logic. |
| Industrial Handheld Terminals | Medical Point-of-Care Devices |
Use Scenario: Maintains system integrity in ruggedized terminals operating across wide temperature ranges (-40°C to +85°C). IC Role / Device Role / Timing Role: Supervises 2.5V display controller supply and 1.2V sensor interface supply with factory-trimmed accuracy. Use Value: Eliminates need for recalibration; 0.5% hysteresis prevents chatter during marginal voltage conditions. | Use Scenario: Powers on diagnostic sensors and wireless transceivers in battery-operated medical instruments. IC Role / Device Role / Timing Role: Generates reliable reset signal for ARM Cortex-M microcontroller using dual-rail monitoring. Use Value: Meets IEC 62304 safety requirements via deterministic reset behavior and guaranteed timeout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6736XKZWD3 | Open-drain RESET output; requires external pullup resistor | Suitable where µP reset pin is open-drain compatible or bidirectional | Select when interfacing with legacy µPs requiring wired-OR reset buses |
| TPS3808G15DBVR | Single-supply supervisor (1.5V threshold only); 350ms timeout; 1.6µA current | Lacks dual-monitoring capability; requires separate IC for second rail | Choose only if supervising one supply; not a functional replacement for dual-rail use cases |
Compared with MAX6736XKZWD3, the MAX6737XKZWD3 eliminates external pullup needs via push-pull output, reducing component count. Against TPS3808G15DBVR, it provides true dual-rail supervision in one device - essential for modern multivoltage SoC platforms where coordinated reset timing across I/O and core domains is mandatory.
Availability
MAX6737XKZWD3 is available at Aetrix Electronics and suitable for portable GPS receivers, industrial handheld terminals, and medical point-of-care devices requiring stable component supply and long-term manufacturability.
Supply support for MAX6737XKZWD3 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 power, sensing, and connectivity applications.
The MAX6736–MAX6745 product line delivers ultra-low-power dual/triple-voltage supervisors for battery-operated and space-constrained embedded systems requiring guaranteed reset timing and factory-trimmed accuracy.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6737XKZWD3?
The MAX6737XKZWD3 has factory-trimmed reset thresholds of 2.313V for VCC1 and 1.665V for VCC2, as indicated by the "ZW" suffix per Table 1 in the datasheet. These values are specified over the full -40°C to +85°C temperature range with ±0.092V and ±0.066V tolerance respectively, enabling precise monitoring of 2.5V I/O and 1.8V core supplies without external calibration.
Does the MAX6737XKZWD3 require an external pullup resistor on the RESET pin?
No, the MAX6737XKZWD3 features a push-pull RESET output, so no external pullup resistor is needed. This differs from open-drain variants like MAX6736XKZWD3. The push-pull driver sources up to 800µA and sinks up to 3.2mA, allowing direct connection to most microprocessor reset inputs without additional components.
What is the minimum pulse width required on the MR pin to trigger reset on the MAX6737XKZWD3?
The MR pin of the MAX6737XKZWD3 requires a minimum low pulse width of 1µs to initiate reset assertion. The internal 1.5kΩ pullup ensures the pin remains high when unconnected, and the MR input is compatible with CMOS logic, open-collector outputs, or momentary switches to ground.
Can the MAX6737XKZWD3 monitor voltages lower than its factory-set thresholds?
No - the MAX6737XKZWD3 is a dual fixed-threshold device with no adjustable input. Unlike MAX6738/MAX6739 variants, it lacks an RSTIN pin and cannot monitor voltages below 1.665V (VCC2) or 2.313V (VCC1). For sub-1V monitoring, consider MAX6742/MAX6745 with PFI input or MAX6738 with RSTIN.
What is the guaranteed operating temperature range for the MAX6737XKZWD3?
The MAX6737XKZWD3 is specified for continuous operation from -40°C to +85°C ambient temperature. This industrial-grade rating is confirmed in the Ordering Information table and Absolute Maximum Ratings section, making it suitable for deployment in automotive cabins, outdoor handhelds, and factory-floor equipment.
MAX6737XKZWD3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.665V, 2.313V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
MAX6737XKZWD3 FAQ
1.How can I place an order for MAX6737XKZWD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6737XKZWD3 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 MAX6737XKZWD3 reliable?
The price and inventory of MAX6737XKZWD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6737XKZWD3 is usually 5 days.
3.What payment methods are accepted for MAX6737XKZWD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6737XKZWD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6737XKZWD3?
MAX6737XKZWD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6737XKZWD3 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 MAX6737XKZWD3?
For technical support, including MAX6737XKZWD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6737XKZWD3 requirements.
6.How does Aetrix verify that MAX6737XKZWD3 is sourced from the original manufacturer or authorized distributors?
All MAX6737XKZWD3 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 MAX6737XKZWD3 meets industry standards.
7.What is the process for return or replacement of MAX6737XKZWD3?
All MAX6737XKZWD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6737XKZWD3, 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 MAX6737XKZWD3 part is unused and in its original packaging.
Return procedure for MAX6737XKZWD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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