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Analog Devices Inc./Maxim Integrated MAX6736XKVHD3+
- Part No.:
- MAX6736XKVHD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX6736XKVHD3+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,195
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Product details
Overview
The MAX6736XKVHD3+ from Maxim Integrated is a dual-voltage microprocessor supervisor IC in SC70-5 package, monitoring VCC1 (1.8V–5.0V) and VCC2 (0.9V–3.3V) with factory-trimmed thresholds (VTH1 = 2.188V, VTH2 = 1.575V), 150ms minimum reset timeout, open-drain active-low RESET output, and manual reset input - used for reliable power-on reset and brownout detection in portable battery-powered systems.
For engineers reviewing the MAX6736XKVHD3+ datasheet, MAX6736XKVHD3+ pinout, MAX6736XKVHD3+ application, or MAX6736XKVHD3+ equivalent, key selection criteria include dual-supply threshold accuracy, ultra-low 6µA supply current, SC70 space-constrained layout compatibility, and guaranteed reset assertion during VCC1/VCC2 undervoltage events across -40°C to +85°C.
Technical Context
The MAX6736XKVHD3+ implements independent voltage comparators for VCC1 and VCC2 against precision internal references, with reset assertion triggered when either supply falls below its trimmed threshold. It uses an internal timer to enforce a minimum 150ms reset timeout after all monitored supplies recover.
Its open-drain RESET output requires an external pullup and asserts low on undervoltage or MR activation; the internal 1.5kΩ MR pullup enables direct pushbutton interfacing without external components. No POK, RSTIN, PFI, or PFO functionality is integrated - confirming strict dual-fixed-threshold supervision per MAX6736 family definition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.188V ±0.05V (factory-trimmed; monitors I/O rails like 2.5V/3.3V) |
| VCC2 Threshold | 1.575V ±0.05V (factory-trimmed; supports core voltages down to 1.2V) |
| Reset Timeout | 150ms min (ensures µP initialization completes before release) |
| Supply Current | 6µA typical (enables multi-year battery life in always-on sensors) |
| Operating Temp | -40°C to +85°C (qualified for industrial and automotive cabin environments) |
| Package | 5-pin SC70 (1.6mm × 1.6mm footprint; compatible with 0.5mm pitch reflow) |
| Reset Output | Open-drain active-low (requires external pullup; interfaces directly with bidirectional µP reset pins) |
Pinout & Package
Package: 5-pin SC70-5 (1.6mm × 1.6mm, 0.5mm pitch), moisture sensitivity level MSL3, lead-free (RoHS-compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Open-drain active-low reset output | Asserts low during VCC1/VCC2 undervoltage or MR activation; requires external pullup resistor (e.g., 10kΩ to VCC1) |
| 2 - GND | Analog/digital ground reference | Single ground connection; must be low-impedance path to system ground plane |
| 3 - MR | Manual reset input, active-low | Pull to GND ≥1µs to force RESET low; internal 1.5kΩ pullup to VCC1 eliminates need for external resistor |
| 4 - VCC2 | Secondary supply voltage input | Monitors core voltage (0.9V–3.3V); threshold fixed at 1.575V for this variant |
| 5 - VCC1 | Primary supply voltage input | Monitors I/O voltage (1.8V–5.0V); threshold fixed at 2.188V for this variant |
Key Features
| Feature | Design Value |
|---|---|
| Dual fixed-voltage supervision | Simultaneously monitors two independent rails (VCC1/VCC2) with no external resistors required |
| Factory-trimmed thresholds | VTH1 = 2.188V and VTH2 = 1.575V calibrated at wafer level; eliminates board-level calibration effort |
| Ultra-low quiescent current | 6µA total supply current enables use in energy-harvesting and coin-cell-powered devices |
| Guaranteed reset assertion | RESET remains valid while either VCC1 or VCC2 >1.2V - ensures robust operation during partial power loss |
| Integrated MR pullup | 1.5kΩ internal pullup to VCC1 allows direct pushbutton-to-GND connection without external components |
Applications
| Portable Medical Sensors | Notebook Power Management |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell with separate 3.3V I/O and 1.8V MCU core rails. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting reset if either rail drops during RF transmission or sensor sampling. Use Value: Prevents firmware corruption during brownout; 6µA current extends battery life beyond 2 years. | Use Scenario: Dual-rail motherboard supplying 5V USB, 3.3V I/O, and 1.2V CPU core - requiring coordinated reset sequencing. IC Role / Device Role / Timing Role: Monitors 3.3V I/O and 1.2V core rails independently to detect asymmetric undervoltage faults. Use Value: Enables early fault detection before CPU lockup; SC70 size fits tight BGA escape routing zones. |
| Industrial PLC I/O Modules | GPS Tracking Devices |
Use Scenario: DIN-rail mounted controller with 24V DC input converted to 5V/3.3V/1.8V rails powering FPGA, ADC, and comms ICs. IC Role / Device Role / Timing Role: Supervises primary 3.3V logic rail and secondary 1.8V FPGA core rail under wide-temperature (-40°C to +85°C) conditions. Use Value: Factory-trimmed thresholds eliminate field calibration; guaranteed operation over full industrial temp range. | Use Scenario: Asset tracker using GPS/GSM module with 3.7V Li-ion battery and buck-boost converter generating 3.3V I/O and 1.2V GNSS core voltage. IC Role / Device Role / Timing Role: Detects simultaneous collapse of both rails during deep discharge or cold-temperature battery impedance rise. Use Value: 150ms reset hold time ensures clean restart of GNSS acquisition firmware after brownout recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316HUT46D3+ | Single-supply supervisor (4.63V only); no VCC2 monitoring capability | Suitable only for single-rail systems; cannot replace dual-monitoring function | Select only if supervising one rail and board space permits larger SOT23-5 package |
| TPS3808G18DBVR | Adjustable threshold via external resistor; 360ms timeout; 1.8V fixed option only | Lacks factory-trimmed dual thresholds; requires external resistor network and adds BOM cost | Choose when adjustable VCC2 threshold is needed and 360ms timeout aligns with system boot timing |
Compared with MAX6736XKVHD3+, MAX6316HUT46D3+ lacks dual-rail capability entirely, while TPS3808G18DBVR trades factory precision and compactness for adjustability - making MAX6736XKVHD3+ optimal for space-constrained, dual-rail, fixed-threshold designs requiring minimal external components.
Availability
MAX6736XKVHD3+ is available at Aetrix Electronics and suitable for portable medical sensors, notebook power management, industrial PLC I/O modules, and GPS tracking devices requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6736XKVHD3+ 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 interface applications in industrial, automotive, and computing markets.
The MAX6736–MAX6745 product line delivers ultra-low-power dual/triple-voltage supervisors optimized for battery-operated and space-constrained systems where reliability, small footprint, and guaranteed reset behavior are critical.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6736XKVHD3+?
The MAX6736XKVHD3+ has factory-trimmed reset thresholds of VTH1 = 2.188V for VCC1 and VTH2 = 1.575V for VCC2, as defined by the "YV" suffix per Table 1 in the datasheet. These values are guaranteed over -40°C to +85°C with ±0.05V tolerance and require no external calibration. The MAX6736XKVHD3+ does not support adjustable thresholds - it is strictly a dual-fixed-threshold device.
Does the MAX6736XKVHD3+ include a power-fail comparator or POK output?
No, the MAX6736XKVHD3+ does not include a power-fail comparator (PFI/PFO) or power-OK (POK1) output. Per the Selector Guide and Pin Configurations, only MAX6741/MAX6744 (POK1) and MAX6742/MAX6745 (PFI/PFO) variants provide those features. The MAX6736XKVHD3+ is a basic dual-fixed-threshold supervisor with RESET, MR, VCC1, VCC2, and GND pins only.
What is the reset timeout period for the MAX6736XKVHD3+ and how is it set?
The MAX6736XKVHD3+ has a 150ms minimum reset timeout period, indicated by the "D3" suffix in its part number. This value is factory-programmed and non-adjustable. The timeout begins after both VCC1 and VCC2 exceed their respective thresholds and is guaranteed over temperature. The MAX6736XKVHD3+ does not support the 1200ms "D7" option.
Can the MAX6736XKVHD3+ supervise a 1.2V core rail and 3.3V I/O rail?
Yes - the MAX6736XKVHD3+ is specifically designed for this configuration. Its VCC2 input monitors core rails from 0.9V to 3.3V with a fixed 1.575V threshold, and its VCC1 input monitors I/O rails from 1.8V to 5.0V with a fixed 2.188V threshold. For a 1.2V core rail, the 1.575V threshold ensures reliable detection of brownout (since 1.2V < 1.575V), while 3.3V I/O remains safely above the 2.188V VCC1 threshold.
Is an external pullup resistor required for the RESET pin on the MAX6736XKVHD3+?
Yes, an external pullup resistor is required because the MAX6736XKVHD3+ features an open-drain RESET output. A typical value is 10kΩ connected between RESET and VCC1. This configuration ensures proper logic-high level when RESET is deasserted and allows wired-OR connection with other reset sources. The MAX6736XKVHD3+ does not include an internal pullup on RESET - unlike some push-pull variants in the same family.
MAX6736XKVHD3+ 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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.313V, 1.575V
- Output:
- Open Drain or Open Collector
- 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
MAX6736XKVHD3+ FAQ
1.How can I place an order for MAX6736XKVHD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6736XKVHD3+ 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 MAX6736XKVHD3+ reliable?
The price and inventory of MAX6736XKVHD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6736XKVHD3+ is usually 5 days.
3.What payment methods are accepted for MAX6736XKVHD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6736XKVHD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6736XKVHD3+?
MAX6736XKVHD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6736XKVHD3+ 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 MAX6736XKVHD3+?
For technical support, including MAX6736XKVHD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6736XKVHD3+ requirements.
6.How does Aetrix verify that MAX6736XKVHD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6736XKVHD3+ 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 MAX6736XKVHD3+ meets industry standards.
7.What is the process for return or replacement of MAX6736XKVHD3+?
All MAX6736XKVHD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6736XKVHD3+, 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 MAX6736XKVHD3+ part is unused and in its original packaging.
Return procedure for MAX6736XKVHD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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