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Analog Devices Inc./Maxim Integrated MAX6741XKZWD3-T
- Part No.:
- MAX6741XKZWD3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX6741XKZWD3-T.pdf
- Description:
- IC SUPERVISOR MPU
- Quantity:
- Payment:
- Shipping:
Inventory:2,493
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Product details
Overview
MAX6741XKZWD3-T 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 2.313V (VTH1) and 1.665V (VTH2), 150ms minimum reset timeout, 6µA supply current, and SC70-5 package. It monitors I/O and core supplies in portable multivoltage systems requiring precise power sequencing.
For engineers reviewing the MAX6741XKZWD3-T datasheet, MAX6741XKZWD3-T pinout, MAX6741XKZWD3-T application, or MAX6741XKZWD3-T equivalent, key selection criteria include dual fixed-threshold supervision, POK1-enabled VCC1-to-VCC2 sequencing, -40°C to +85°C operation, and compatibility with battery-powered controllers and embedded processors needing reliable reset assertion during supply brownouts.
Technical Context
The MAX6741XKZWD3-T implements two independent voltage comparators with precision internal references (0.488V base for threshold scaling), a programmable 150ms reset timeout timer, and dedicated logic to assert RESET low when either VCC1 ≤ 2.313V or VCC2 ≤ 1.665V - with hysteresis of 0.5% and transient immunity up to 35µs at 100mV overdrive.
Its POK1 output operates independently of MR and VCC2 inputs, asserting high only after VCC1 exceeds 2.313V for ≥37.5ms (tPOKP), enabling controlled enablement of downstream DC/DC converters - critical for I/O-before-core power-up sequences in ASICs and SoCs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH1 / VTH2 | 2.313V / 1.665V factory-trimmed thresholds for primary (I/O) and secondary (core) supply monitoring |
| Reset Timeout | 150ms min (D3 option) - ensures µP remains held in reset long enough for stable power recovery |
| Supply Current | 6µA typical - enables use in always-on battery-backed subsystems without significant drain |
| POK1 Timeout | 37.5ms min - guarantees clean VCC1 stabilization before enabling VCC2 rail |
| Operating Temp | -40°C to +85°C - qualified for industrial and extended-temperature embedded applications |
| Package | 5-pin SC70 - 2.0mm × 1.25mm footprint ideal for space-constrained portable PCBs |
| Reset Output Type | Push-pull active-low RESET - eliminates need for external pullup resistor in most µP interfaces |
Pinout & Package
MAX6741XKZWD3-T uses a 5-pin SC70-5 package with exposed pad (not electrically connected). Pin 1 = RESET (push-pull active-low), Pin 2 = GND, Pin 3 = VCC2 (secondary supply input), Pin 4 = POK1 (open-drain active-high Power-OK), Pin 5 = VCC1 (primary supply input).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low reset output | Push-pull driver referenced to VCC1; asserts low if VCC1 ≤ 2.313V or VCC2 ≤ 1.665V for ≥150ms |
| 2 - GND | Ground reference | Common return for all internal comparators, timers, and outputs; must be low-impedance |
| 3 - VCC2 | Secondary supply monitor input | Monitors core voltage (0.9V–3.3V range); trip at 1.665V with 0.5% hysteresis |
| 4 - POK1 | VCC1 Power-OK indicator | Open-drain active-high output; goes high only after VCC1 > 2.313V for ≥37.5ms - used to sequence VCC2 enable |
| 5 - VCC1 | Primary supply monitor input | Monitors I/O voltage (1.8V–5.0V range); trip at 2.313V with 0.5% hysteresis |
Key Features
| Feature | Design Value |
|---|---|
| Dual fixed-threshold supervision | Simultaneously monitors VCC1 (2.313V) and VCC2 (1.665V) with independent comparators - eliminates need for discrete supervisors |
| VCC1 Power-OK (POK1) output | Enables deterministic power sequencing: downstream VCC2 regulator enabled only after VCC1 stabilizes for ≥37.5ms |
| Ultra-low quiescent current | 6µA max ICC1 at 1.8V - extends battery life in portable equipment without sacrificing supervision accuracy |
| SC70-5 package | 2.0mm × 1.25mm footprint with 0.65mm pitch - reduces board area by >50% vs. SOT23-5 in dense portable layouts |
| Transient-immune reset timing | Guaranteed immunity to VCC glitches <35µs at 100mV overdrive - prevents spurious resets during switching noise |
Applications
| Portable Battery-Powered Equipment | Notebook Computers |
|---|---|
Use Scenario: Li-ion powered handheld devices requiring low-power supervision during sleep mode and wake-up sequencing. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting RESET during VCC1/VCC2 brownout and enabling VCC2 only after POK1 validates VCC1 stability. Use Value: Prevents processor lockup during battery sag; 6µA ICC1 extends standby time by >20% vs. legacy supervisors. | Use Scenario: Dual-rail CPU power architecture where I/O voltage must stabilize before core voltage ramp-up. IC Role / Device Role / Timing Role: POK1 output controls enable pin of core DC/DC converter, enforcing strict I/O-before-core sequencing per Intel/AMD specs. Use Value: Eliminates boot failures caused by improper rail sequencing; 37.5ms POK1 delay matches typical DC/DC startup latency. |
| Controllers | GPS Equipment |
Use Scenario: Industrial PLC controllers operating across wide temperature ranges with multiple isolated supply domains. IC Role / Device Role / Timing Role: Monitors main 3.3V I/O rail and 1.8V FPGA core rail; RESET holds MCU until both are valid and stable. Use Value: -40°C to +85°C rating ensures reliability in uncontrolled environments; 0.5% threshold hysteresis rejects noise-induced false trips. | Use Scenario: GPS receivers with sensitive RF front-end requiring clean power-up to avoid signal acquisition failure. IC Role / Device Role / Timing Role: Supervises 2.8V LNA supply and 1.2V baseband processor supply; POK1 gates LNA enable to prevent RF instability during warm-up. Use Value: 150ms reset timeout ensures full oscillator settling before firmware execution; SC70 size fits tight RF module layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6744XKZWD3-T | Same thresholds (2.313V/1.665V), same D3 timeout, but push-pull RESET and POK1 - no functional difference from MAX6741XKZWD3-T | Identical sequencing capability; differs only in internal RESET driver topology (push-pull vs. open-drain in non-POK variants) | Select MAX6744XKZWD3-T only if system requires push-pull RESET with no external pullup and POK1 functionality |
| TPS3808G18DBVR | Single-supply supervisor (1.8V threshold only); no POK1 output; 350ms timeout; 1.1µA ICC | Lacks dual-monitoring and sequencing support - suitable only for single-rail systems without sequencing requirements | Choose only for cost-sensitive single-voltage applications where POK1 and VCC2 monitoring are unnecessary |
Compared with MAX6744XKZWD3-T, the MAX6741XKZWD3-T offers identical supervision and sequencing performance; versus TPS3808G18DBVR, it adds critical dual-rail monitoring and POK1-controlled sequencing - essential for modern multivoltage processors.
Availability
MAX6741XKZWD3-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, notebook computers, controllers, and GPS equipment requiring stable component supply with guaranteed -40°C to +85°C operation and tape-and-reel delivery.
Supply support for MAX6741XKZWD3-T 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 management, sensing, and interface applications in industrial, automotive, and communications markets.
The MAX6736–MAX6745 family was developed specifically for low-power dual-/triple-voltage microprocessor supervision in space-constrained portable and embedded systems requiring accurate reset assertion and power-rail sequencing.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6741XKZWD3-T?
The MAX6741XKZWD3-T has factory-trimmed reset thresholds of 2.313V for VCC1 and 1.665V for VCC2, as indicated by the "ZW" suffix in its part number per Table 1 of the datasheet. These values are guaranteed over -40°C to +85°C with 0.5% hysteresis and ±1.5% initial accuracy.
Does the MAX6741XKZWD3-T support power-supply sequencing, and how is it implemented?
Yes, the MAX6741XKZWD3-T supports sequencing via its open-drain POK1 output. When VCC1 exceeds 2.313V for ≥37.5ms, POK1 deasserts high and can be used to enable a downstream VCC2 regulator - ensuring I/O rail stability before core rail activation. This is explicitly documented in the Functional Diagram and Typical Application Circuits.
What is the reset timeout period for the MAX6741XKZWD3-T, and is it adjustable?
The MAX6741XKZWD3-T has a fixed 150ms minimum reset timeout period (D3 option), as specified by the "D3" suffix. This timeout begins after both VCC1 and VCC2 exceed their thresholds and is not user-adjustable - it is internally trimmed and guaranteed across temperature.
Can the MAX6741XKZWD3-T monitor a negative voltage supply?
No, the MAX6741XKZWD3-T does not support direct negative voltage monitoring. Its VCC1 and VCC2 inputs require positive supplies between 1.0V and 5.5V. While the MAX6742/MAX6745 variants include a PFI input that can monitor negative rails using external resistor networks (Figure 4), the MAX6741XKZWD3-T lacks PFI/PFO functionality.
What package type and pin configuration does the MAX6741XKZWD3-T use?
The MAX6741XKZWD3-T uses a 5-pin SC70-5 package (2.0mm × 1.25mm). Pin 1 = RESET (push-pull active-low), Pin 2 = GND, Pin 3 = VCC2, Pin 4 = POK1 (open-drain active-high), Pin 5 = VCC1 - confirmed in the Pin Configurations diagram and Pin Description table.
MAX6741XKZWD3-T 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:
- 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
MAX6741XKZWD3-T FAQ
1.How can I place an order for MAX6741XKZWD3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6741XKZWD3-T 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 MAX6741XKZWD3-T reliable?
The price and inventory of MAX6741XKZWD3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6741XKZWD3-T is usually 5 days.
3.What payment methods are accepted for MAX6741XKZWD3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6741XKZWD3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6741XKZWD3-T?
MAX6741XKZWD3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6741XKZWD3-T 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 MAX6741XKZWD3-T?
For technical support, including MAX6741XKZWD3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6741XKZWD3-T requirements.
6.How does Aetrix verify that MAX6741XKZWD3-T is sourced from the original manufacturer or authorized distributors?
All MAX6741XKZWD3-T 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 MAX6741XKZWD3-T meets industry standards.
7.What is the process for return or replacement of MAX6741XKZWD3-T?
All MAX6741XKZWD3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6741XKZWD3-T, 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 MAX6741XKZWD3-T part is unused and in its original packaging.
Return procedure for MAX6741XKZWD3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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