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Analog Devices Inc./Maxim Integrated MAX6741XKYDD3+
- Part No.:
- MAX6741XKYDD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX6741XKYDD3+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,500
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Product details
Overview
The MAX6741XKYDD3+ from Maxim Integrated is a dual-voltage microprocessor supervisor IC with push-pull RESET and open-drain VCC1 Power-OK (POK1) output, factory-trimmed reset thresholds of 2.188V (VCC1) and 1.575V (VCC2), 150ms minimum reset timeout, 6µA supply current, and SC70-5 package - designed for power-supply sequencing in portable multivoltage systems.
For engineers reviewing the MAX6741XKYDD3+ datasheet, MAX6741XKYDD3+ pinout, MAX6741XKYDD3+ application, or MAX6741XKYDD3+ equivalent, this page delivers verified technical context, exact pin functions, real-world sequencing use cases, and two validated alternative parts with documented functional differences.
Technical Context
The MAX6741XKYDD3+ monitors two independent supply rails (VCC1 and VCC2) using precision internal voltage references, asserting active-low RESET when either falls below its factory-set threshold. It integrates a dedicated open-drain POK1 output that deasserts only after VCC1 exceeds its 2.188V threshold for 37.5–75.0ms, enabling controlled power-up sequencing.
Its reset logic includes automatic timeout restart on re-fall, 0.5% threshold hysteresis, and guaranteed valid operation down to VCC1 = 1.2V. The device uses BiCMOS process technology (249 transistors) and operates across –40°C to +85°C with no external components required for basic supervision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.188V ±0.050V (factory-trimmed; enables reliable I/O supply monitoring at 2.2V nominal systems) |
| VCC2 Threshold | 1.575V ±0.040V (factory-trimmed; supports core supply supervision for 1.6V/1.5V ASICs) |
| Reset Timeout | 150ms min (D3 suffix; ensures µP reset hold time meets ARM Cortex-M and similar boot requirements) |
| Supply Current | 6µA typical (ICC1 + ICC2 at 25°C; enables >10-year battery life in coin-cell–powered IoT sensors) |
| POK1 Timeout | 37.5–75.0ms (tPOKP; provides clean enable window for downstream DC/DC converters) |
| Operating Temp | –40°C to +85°C (industrial-grade rating; validated across full range without derating) |
| Package | SC70-5 (1.6mm × 1.6mm × 0.9mm; compatible with 0.65mm pitch reflow and automated optical inspection) |
Pinout & Package
MAX6741XKYDD3+ is housed in a 5-pin SC70-5 package (1.6mm × 1.6mm, 0.9mm height, 0.65mm lead pitch), optimized for space-constrained portable designs and compatible with standard high-volume SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push-pull reset output | Drives µP reset pin directly (no pullup needed); sinks 3.2mA @ VCC1 ≥4.25V; VOH ≥0.8×VCC1 |
| 2 - GND | Ground reference | Common return for all internal comparators, timers, and outputs; must be low-impedance connection |
| 3 - VCC2 | Secondary supply input | Monitors core voltage rail (0.9–3.3V range); triggers RESET if <1.575V; supports 1.6V ASIC cores |
| 4 - POK1 | VCC1 Power-OK open-drain output | Asserted low until VCC1 ≥2.188V for ≥37.5ms; used to enable VCC2 regulator in I/O→core sequencing |
| 5 - VCC1 | Primary supply input | Monitors I/O voltage rail (1.8–5.0V range); sets POK1 behavior and RESET assertion threshold |
Key Features
| Feature | Design Value |
|---|---|
| Dual fixed-threshold supervision | Simultaneous monitoring of VCC1 (2.188V) and VCC2 (1.575V) eliminates need for discrete comparators or dual supervisors |
| VCC1 Power-OK (POK1) output | Open-drain POK1 enables precise power-up sequencing (e.g., enable VCC2 only after VCC1 stabilizes), reducing inrush and latch-up risk |
| 150ms reset timeout (D3) | Guaranteed minimum hold time satisfies boot ROM timing requirements for ARM, RISC-V, and legacy µPs without external RC timing |
| 6µA total supply current | Ultra-low ICC enables use in always-on battery-backed systems (e.g., RTC supervisors, sensor nodes) with multi-year runtime |
| SC70-5 footprint | 1.6mm × 1.6mm size reduces PCB area by >60% vs. SOT23-5; supports high-density layout in wearables and handhelds |
Applications
| Power-Supply Sequencing | Battery-Powered Microcontrollers |
|---|---|
Use Scenario: Dual-rail system requiring I/O supply (VCC1) to stabilize before enabling core supply (VCC2). IC Role / Device Role / Timing Role: MAX6741XKYDD3+ asserts POK1 only after VCC1 ≥2.188V for ≥37.5ms, then enables VCC2 regulator via external MOSFET or EN pin. Use Value: Prevents core logic corruption during brown-out; eliminates need for discrete timing circuitry or firmware-based sequencing delays. |
Use Scenario: Coin-cell–powered sensor node with ARM Cortex-M0+ MCU and 1.8V I/O / 1.2V core rails. IC Role / Device Role / Timing Role: MAX6741XKYDD3+ supervises both rails using factory-trimmed thresholds and asserts RESET if either drops below spec during cold start or battery sag. Use Value: 6µA quiescent current extends CR2032 lifetime beyond 5 years; SC70-5 footprint fits sub-100mm² PCBs. |
| Industrial Controllers | POS Terminals |
Use Scenario: Programmable logic controller (PLC) module with 3.3V I/O and 1.5V FPGA core, operating in –25°C to +70°C ambient. IC Role / Device Role / Timing Role: MAX6741XKYDD3+ guarantees RESET assertion over full industrial temperature range with <±0.05V threshold drift. Use Value: Eliminates field failures due to marginal supply dips; factory-trimmed thresholds remove calibration step in production test. |
Use Scenario: Point-of-sale terminal with 5V USB-powered I/O and 1.8V application processor core. IC Role / Device Role / Timing Role: MAX6741XKYDD3+ monitors 5V rail (via resistor divider to VCC1) and 1.8V core (VCC2), asserting RESET within 35µs of fault detection. Use Value: Fast tRD (35µs) prevents spurious resets during hot-plug events; push-pull RESET drives processor reset pin without external pullup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6744XKYDD3+ | Push-pull RESET (same), identical thresholds and timing, but no POK1 output - uses MR input instead | Lacks VCC1 sequencing capability; suitable only where manual reset is required and POK is unused | Select MAX6744XKYDD3+ only if POK1 functionality is unnecessary and MR input is preferred over sequencing control |
| TPS3808G18DBVR | Single-supply supervisor (1.8V threshold only); no dual-rail monitoring or POK output; 1.8µA IQ | Cannot replace dual-monitoring function; requires separate IC for second rail, increasing BOM count and board area | Choose TPS3808G18DBVR only for single-rail cost-sensitive designs where VCC2 supervision is handled elsewhere |
Compared with MAX6741XKYDD3+, MAX6744XKYDD3+ removes sequencing capability but adds MR, while TPS3808G18DBVR lacks dual monitoring entirely - making MAX6741XKYDD3+ the only option supporting autonomous I/O-to-core power sequencing in a single SC70-5 package.
Availability
MAX6741XKYDD3+ is available at Aetrix Electronics and suitable for portable equipment, multivoltage systems, and power-sequencing applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant lead-free packaging.
Supply support for MAX6741XKYDD3+ 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 computing markets.
The MAX6736–MAX6745 family was designed specifically for ultra-low-power dual/triple-voltage supervision in space-constrained portable electronics, emphasizing factory-trimmed accuracy, minimal quiescent current, and integrated sequencing features like POK1.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6741XKYDD3+?
The MAX6741XKYDD3+ has factory-trimmed reset thresholds of 2.188V for VCC1 and 1.575V for VCC2, as defined by the "YD" suffix per Table 1 in the datasheet. These values are guaranteed over –40°C to +85°C with ±0.050V and ±0.040V tolerances respectively, and are measured under load conditions specified in the Electrical Characteristics table.
Does the MAX6741XKYDD3+ include a manual reset input (MR)?
No, the MAX6741XKYDD3+ does not include a manual reset input. Per the Selector Guide and Pin Description, MR is present only on MAX6736–MAX6739 and MAX6740/MAX6742/MAX6743. The MAX6741XKYDD3+ substitutes MR functionality with the POK1 output for sequencing control, and its RESET pin is push-pull active-low without MR pin.
What is the purpose and timing behavior of the POK1 output on the MAX6741XKYDD3+?
The POK1 output on the MAX6741XKYDD3+ is an open-drain active-high signal that remains low until VCC1 exceeds its 2.188V threshold for a minimum timeout period of 37.5–75.0ms (tPOKP). It is electrically independent of VCC2 and MR, and is intended to enable downstream power supplies in strict sequencing applications - for example, holding VCC2 regulator in shutdown until VCC1 is fully stable.
Can the MAX6741XKYDD3+ monitor a 1.2V core supply?
Yes, the MAX6741XKYDD3+ can monitor a 1.2V core supply via its VCC2 pin, which supports factory-trimmed thresholds down to 0.752V (MAX67_ _D suffix). Its 1.575V VCC2 threshold is appropriate for 1.6V nominal cores, and the device guarantees valid RESET assertion even when VCC2 = 1.2V (per Absolute Maximum Ratings and Functional Diagram), though reset will trigger only if VCC2 falls below 1.575V.
Is the MAX6741XKYDD3+ pin-compatible with other devices in the MAX6736–MAX6745 family?
No - the MAX6741XKYDD3+ uses a unique 5-pin SC70 pinout with RESET/VCC2/GND/POK1/VCC1 arrangement (see Pin Configurations, page 15), differing from MAX6736 (RESET/GND/MR/VCC2/VCC1) and MAX6742 (RESET/GND/PFI/PFO/VCC1). POK1 replaces MR or PFI/PFO pins, making it incompatible without PCB redesign.
MAX6741XKYDD3+ 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:
- 0.788V, 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
MAX6741XKYDD3+ FAQ
1.How can I place an order for MAX6741XKYDD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6741XKYDD3+ 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 MAX6741XKYDD3+ reliable?
The price and inventory of MAX6741XKYDD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6741XKYDD3+ is usually 5 days.
3.What payment methods are accepted for MAX6741XKYDD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6741XKYDD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6741XKYDD3+?
MAX6741XKYDD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6741XKYDD3+ 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 MAX6741XKYDD3+?
For technical support, including MAX6741XKYDD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6741XKYDD3+ requirements.
6.How does Aetrix verify that MAX6741XKYDD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6741XKYDD3+ 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 MAX6741XKYDD3+ meets industry standards.
7.What is the process for return or replacement of MAX6741XKYDD3+?
All MAX6741XKYDD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6741XKYDD3+, 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 MAX6741XKYDD3+ part is unused and in its original packaging.
Return procedure for MAX6741XKYDD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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