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Analog Devices Inc./Maxim Integrated MAX6736XKYHD3+
- Part No.:
- MAX6736XKYHD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX6736XKYHD3+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,739
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Product details
Overview
MAX6736XKYHD3+ from Maxim Integrated is a dual-voltage microprocessor supervisor IC with two factory-trimmed reset thresholds (VTH1 = 2.188V, VTH2 = 1.575V), open-drain active-low RESET output, manual reset input (MR), and 150ms minimum reset timeout period. It monitors primary I/O supply (VCC1) and secondary core supply (VCC2) in portable and multivoltage systems, ensuring reliable µP reset during brownout or power-up sequencing.
For engineers reviewing the MAX6736XKYHD3+ datasheet, MAX6736XKYHD3+ pinout, MAX6736XKYHD3+ application, or MAX6736XKYHD3+ equivalent, key selection considerations include its SC70-5 package, 6µA supply current, -40°C to +85°C operation, dual fixed-threshold supervision, and compatibility with battery-powered equipment requiring low-power, space-constrained reset management.
Technical Context
The MAX6736XKYHD3+ implements independent voltage comparators for VCC1 and VCC2, each referenced to precision internal bandgap-derived thresholds (2.188V and 1.575V, respectively), with hysteresis of 0.5% to reject noise-induced false resets. Its reset assertion logic combines ORed fault detection across both supplies and MR input, followed by a digitally timed 150ms (min) timeout before deassertion.
It features an open-drain RESET output requiring external pullup, internal 1.5kΩ MR pullup to VCC1, and guaranteed valid reset state while either VCC1 or VCC2 exceeds 1.2V. The device uses BiCMOS process technology (249 transistors) and operates from 1.0V to 5.5V on VCC1 and 0.752V to 3.3V on VCC2 across the full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold (VTH1) | 2.188V ±0.050V (factory-trimmed; enables precise monitoring of 2.2V I/O rails) |
| VCC2 Threshold (VTH2) | 1.575V ±0.045V (factory-trimmed; supports 1.5V/1.6V core supply supervision) |
| Reset Timeout Period | 150ms (min); ensures µP remains held in reset long enough for stable power rail settling |
| Supply Current (ICC1) | 6µA typical at +25°C; enables multi-year battery life in portable applications |
| Operating Temperature | -40°C to +85°C; qualified for industrial and extended commercial environments |
| Package | 5-pin SC70 (2.0mm × 1.25mm × 0.95mm); ultra-compact footprint for space-constrained PCBs |
| Reset Output Type | Open-drain active-low; allows wired-OR configuration and level-shifting flexibility |
Pinout & Package
MAX6736XKYHD3+ is housed in a 5-pin SC70-5 package (2.0mm × 1.25mm, 0.95mm height), optimized for high-density portable designs. Pin 1 is RESET (open-drain active-low), Pin 2 is GND, Pin 3 is MR (active-low manual reset), Pin 4 is VCC2 (secondary supply input), and Pin 5 is VCC1 (primary supply input).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Open-drain active-low reset output | Asserts low when VCC1 < 2.188V or VCC2 < 1.575V; requires external pullup; drives µP reset pin |
| 2 - GND | Analog/digital ground reference | Common return path for all internal comparators and bias circuits; must be low-impedance |
| 3 - MR | Active-low manual reset input | Pull low ≥1µs to force RESET low; internal 1.5kΩ pullup to VCC1; debounced via timer |
| 4 - VCC2 | Secondary supply voltage input | Monitored against 1.575V threshold; supports 0.752V–3.3V range; powers internal VCC2 comparator |
| 5 - VCC1 | Primary supply voltage input | Monitored against 2.188V threshold; powers entire IC; operates from 1.0V–5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Dual fixed-voltage supervision | Simultaneously monitors two independent rails (VCC1/VCC2) with factory-trimmed thresholds-eliminates need for external resistive dividers or trimming |
| Ultra-low quiescent current | 6µA typical ICC1 enables >10-year battery life in coin-cell–powered devices like GPS trackers and medical sensors |
| Guaranteed reset validity | RESET state remains valid even if VCC1 or VCC2 drops below 1.2V-ensures fail-safe behavior during deep brownouts |
| Transient immunity | Immune to sub-100µs supply glitches at ≥100mV overdrive-prevents spurious resets in noisy DC-DC environments |
| SC70-5 footprint | 2.0mm × 1.25mm package reduces board area by >50% vs. SOT23-5-critical for wearables and compact IoT modules |
Applications
| Portable Medical Sensors | Notebook Power Sequencing |
|---|---|
|
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 until both rails stabilize post-battery insertion or wake-up. Use Value: 6µA ICC1 extends battery life beyond 5 years; 150ms timeout ensures reliable MCU initialization after cold start. |
Use Scenario: Dual-rail notebook motherboard where 5V auxiliary must power up before 3.3V I/O and 1.2V core. IC Role / Device Role / Timing Role: Monitors VCC1 (5V aux) and VCC2 (3.3V I/O) to gate core supply enable via RESET signal. Use Value: Factory-trimmed thresholds eliminate calibration overhead; SC70 size fits tight VRM layout near CPU socket. |
| Industrial Handheld Terminals | POS Equipment with Backup Battery |
|
Use Scenario: Ruggedized barcode scanner operating from Li-ion battery and USB host, with 3.3V logic and 1.2V RF transceiver rails. IC Role / Device Role / Timing Role: Detects simultaneous brownout on both rails and holds µP in reset during battery switchover. Use Value: 0.5% threshold hysteresis prevents chatter during marginal supply conditions; MR pin enables field-service hard reset. |
Use Scenario: Point-of-sale terminal with main 5V supply and supercapacitor backup, requiring orderly shutdown on AC loss. IC Role / Device Role / Timing Role: Supervises main 5V rail (VCC1) and backup 3.3V rail (VCC2) to trigger firmware-initiated save-and-hibernate sequence. Use Value: Guaranteed reset validity down to 1.2V VCC1 allows detection of failing backup supply before data corruption occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6737XKYHD3+ | Push-pull RESET output (vs. open-drain); identical thresholds, timing, and package | Eliminates need for external pullup resistor; incompatible with wired-OR reset buses | Select when driving single µP reset pin directly without bus sharing |
| TPS3808G125DBVR | Single-supply supervisor (1.25V threshold only); SOT23-5 package; 1.5µA ICC | Cannot monitor dual rails simultaneously; requires two devices for same function | Choose only if system has only one critical rail or cost-per-rail is prioritized over integration |
Compared with MAX6736XKYHD3+, MAX6737XKYHD3+ offers push-pull drive for simpler µP interface but sacrifices bus-sharing capability, while TPS3808G125DBVR provides lower current but lacks dual-rail integration-making MAX6736XKYHD3+ optimal for space- and power-constrained dual-supply systems.
Availability
MAX6736XKYHD3+ is available at Aetrix Electronics and suitable for portable medical sensors, industrial handheld terminals, notebook computers, POS equipment, and GPS devices requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6736XKYHD3+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and consumer applications.
The MAX6736–MAX6745 family was designed specifically for low-power, dual-/triple-voltage microprocessor supervision in space-constrained portable and multivoltage systems-emphasizing precision thresholds, minimal current draw, and SC70 packaging.
FAQ
What are the exact reset threshold voltages for MAX6736XKYHD3+?
The MAX6736XKYHD3+ has factory-trimmed reset thresholds of VTH1 = 2.188V (for VCC1) and VTH2 = 1.575V (for VCC2), with ±0.050V and ±0.045V tolerances respectively across -40°C to +85°C. These values are confirmed in Table 2 of the official datasheet and correspond to the "Y" and "V" suffix codes in the part number.
Does MAX6736XKYHD3+ support manual reset functionality?
Yes, MAX6736XKYHD3+ includes a dedicated active-low MR input (Pin 3) with internal 1.5kΩ pullup to VCC1. Pulling MR low for ≥1µs forces RESET low and maintains it for the full 150ms timeout period after MR returns high-enabling hardware-initiated system reset without software intervention.
What is the reset timeout period of MAX6736XKYHD3+ and how is it configured?
MAX6736XKYHD3+ has a fixed 150ms (minimum) reset timeout period, indicated by the "D3" suffix in the part number. This timeout begins after both VCC1 and VCC2 exceed their respective thresholds and is implemented via an internal digital timer-no external components are required to set or adjust it.
Can MAX6736XKYHD3+ monitor a 1.2V core supply?
No-MAX6736XKYHD3+ is configured with VTH2 = 1.575V, which is not suitable for direct 1.2V core supervision. For 1.2V monitoring, a different variant such as MAX6736XKWD3+ (VTH2 = 1.110V) or MAX6736XKED3+ (VTH2 = 0.833V) would be required, as specified in Table 2 of the datasheet.
Is MAX6736XKYHD3+ compatible with lead-free assembly processes?
Yes, MAX6736XKYHD3+ is supplied in lead-free packaging, as indicated by the "+" suffix in the part number. It complies with RoHS requirements and supports standard Pb-free reflow profiles (JEDEC J-STD-020), including peak temperatures up to +260°C.
MAX6736XKYHD3+ 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, 2.188V
- 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
MAX6736XKYHD3+ FAQ
1.How can I place an order for MAX6736XKYHD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6736XKYHD3+ 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 MAX6736XKYHD3+ reliable?
The price and inventory of MAX6736XKYHD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6736XKYHD3+ is usually 5 days.
3.What payment methods are accepted for MAX6736XKYHD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6736XKYHD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6736XKYHD3+?
MAX6736XKYHD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6736XKYHD3+ 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 MAX6736XKYHD3+?
For technical support, including MAX6736XKYHD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6736XKYHD3+ requirements.
6.How does Aetrix verify that MAX6736XKYHD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6736XKYHD3+ 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 MAX6736XKYHD3+ meets industry standards.
7.What is the process for return or replacement of MAX6736XKYHD3+?
All MAX6736XKYHD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6736XKYHD3+, 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 MAX6736XKYHD3+ part is unused and in its original packaging.
Return procedure for MAX6736XKYHD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6736XKYHD3+ Tags
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MIC826SYMT-TR
Microchip Technology
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APX803L20-29SA-7
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