My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6306UK25D1
- Part No.:
- MAX6306UK25D1
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6306UK25D1.pdf
- Description:
- IC SUPERVISOR PROGRAMMABLE RESET
- Quantity:
- Payment:
- Shipping:
Inventory:2,725
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX6306UK25D1 from Maxim Integrated is a 5-pin SOT23 programmable supervisory IC that monitors VCC supply voltage and provides a push/pull active-low reset output. It features a factory-trimmed 2.5V reset threshold (±2.5% over temperature), 1ms minimum reset timeout, manual reset input (MR), and guaranteed RESET validity down to VCC = 1V. It is used in multivoltage embedded systems requiring reliable power-on and brownout reset assertion.
For engineers reviewing the MAX6306UK25D1 datasheet, MAX6306UK25D1 pinout, MAX6306UK25D1 application, or MAX6306UK25D1 equivalent, key selection considerations include its 2.5V VCC reset threshold tolerance, 1ms factory-programmed timeout, MR input compatibility with TTL/CMOS logic, immunity to fast VCC transients, and guaranteed operation across 0°C to +70°C.
Technical Context
The MAX6306UK25D1 uses an internal factory-trimmed resistor divider to monitor VCC against a precision 2.5V threshold, with ±2.5% accuracy over –40°C to +85°C. Its reset generator asserts an active-low push/pull output for ≥1ms after all monitored supplies exceed threshold.
It includes a manual-reset input (MR) with 63.5kΩ internal pull-up, TTL/CMOS-compatible logic thresholds, and guaranteed reset assertion even when VCC drops to 1V. The device ignores negative-going VCC transients ≤10µs at 2.5V overdrive, per typical operating characteristics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.5V nominal, ±2.5% over –40°C to +85°C - ensures accurate brownout detection for 3.3V/5V systems |
| Reset Timeout Period | 1ms minimum - meets minimum processor reset hold-time requirements for most microcontrollers |
| Supply Current | 8µA typical at +25°C - enables use in battery-powered portable equipment |
| RESET Output Type | Active-low push/pull - drives CMOS/TTL loads directly without external pull-up |
| MR Input Logic | VIL ≤ 0.3×VCC, VIH ≥ 0.7×VCC - supports direct interface with 3V or 5V logic domains |
| Operating Temperature | 0°C to +70°C - suitable for commercial-grade computing and industrial control applications |
| VCC Range | 2.55V to +5.5V - compatible with 3.3V and 5V supply rails |
Pinout & Package
Package: 5-pin SOT23 (U5+1), surface-mount, RoHS-compliant, tape-and-reel packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push/pull reset output | Drives µP reset pin directly; sinks 3.2mA at VCC > 4.25V; valid down to VCC = 1V |
| 2 - GND | System ground reference | Return path for internal comparators, reset generator, and MR input circuitry |
| 3 - RST IN | Adjustable undervoltage reset input | Monitors external rail via resistor divider; threshold set by 1.23V internal reference |
| 4 - MR | Manual reset input | Pull low to force reset; internal 63.5kΩ pull-up allows open-circuit default high |
| 5 - VCC | Main supply input | Power source and primary monitored rail; internal divider sets 2.5V reset threshold |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-set 2.5V reset threshold | ±2.5% over full temperature range eliminates need for external trimming or calibration |
| 1ms factory-programmed reset timeout | Guaranteed minimum duration satisfies ARM Cortex-M, PIC, and 8051 reset timing requirements |
| Manual reset input with internal pull-up | 63.5kΩ pull-up enables single-switch implementation without external components |
| Immunity to short VCC transients | Rejects <10µs negative glitches at 2.5V overdrive - prevents spurious resets in noisy environments |
| No external components required | Self-contained supervision - only bypass capacitor needed for stable operation |
Applications
| Portable Computers | Embedded Control Systems |
|---|---|
Use Scenario: Power sequencing and brownout protection in clamshell notebooks with dual 3.3V/5V rails. IC Role / Device Role / Timing Role: Monitors main VCC and asserts synchronized reset to CPU, GPU, and PMIC during startup and voltage sags. Use Value: Prevents firmware corruption by guaranteeing ≥1ms reset pulse even during 2.5V–3.0V brownouts. | Use Scenario: Supervision of microcontroller-based HVAC controllers operating from unregulated 12V automotive inputs. IC Role / Device Role / Timing Role: Primary VCC supervisor with manual reset for field service recovery and transient-immune brownout response. Use Value: 8µA quiescent current extends battery backup runtime; MR input enables technician-initiated system reboot. |
| Intelligent Instruments | Multivoltage Systems |
Use Scenario: Precision data acquisition modules with isolated analog front-ends and digital processing cores. IC Role / Device Role / Timing Role: Ensures deterministic boot state by asserting reset until both 3.3V digital and 5V analog supplies stabilize. Use Value: Factory-trimmed 2.5V threshold matches common LDO dropout margins, reducing BOM count vs. adjustable solutions. | Use Scenario: Industrial PLC I/O modules supporting 3V logic, 5V communication, and 24V field-side power. IC Role / Device Role / Timing Role: Centralized VCC monitoring with optional RST IN extension for auxiliary rail supervision. Use Value: Single SOT23-5 IC replaces discrete reset circuits, saving PCB area while maintaining 2.5V–5.0V threshold flexibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6306EUK25D1 | Extended temperature range: –40°C to +85°C vs. 0°C to +70°C; same 2.5V threshold and 1ms timeout | Suitable for automotive under-hood or industrial outdoor deployments where ambient exceeds 70°C | Select MAX6306EUK25D1 when operation beyond +70°C is required; otherwise MAX6306UK25D1 suffices for commercial environments |
| TPS3808G12DBVR | 2.93V fixed threshold, 20ms timeout, 1.8–6.5V VCC range, 2.5µA ICC - lower current but different threshold/timing | Better suited for ultra-low-power 3V systems needing longer reset hold time and tighter current budget | Choose TPS3808G12DBVR only if 2.93V threshold aligns with system LDO spec and 20ms timeout is acceptable |
Compared with MAX6306EUK25D1, the MAX6306UK25D1 trades extended temperature capability for cost and availability advantages in commercial applications; versus TPS3808G12DBVR, it offers precise 2.5V detection and shorter 1ms timeout critical for fast-boot microcontrollers.
Availability
MAX6306UK25D1 is available at Aetrix Electronics and suitable for portable computers, embedded control systems, and intelligent instruments requiring stable component supply and guaranteed long-term sourcing.
Supply support for MAX6306UK25D1 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, mixed-signal, and power management ICs for demanding industrial, computing, and communications applications.
The MAX6305–MAX6313 family delivers highly integrated, factory-programmed supervisory circuits optimized for multivoltage microprocessor systems requiring minimal footprint, low power, and robust transient immunity.
FAQ
What is the factory-programmed reset threshold voltage for the MAX6306UK25D1?
The MAX6306UK25D1 has a factory-programmed VCC reset threshold of 2.5V nominal, with ±2.5% tolerance over the full operating temperature range of 0°C to +70°C. This value is trimmed using an internal resistor divider and is specified in the Electrical Characteristics table under "Reset Threshold (VTH)" for the MAX6306 series. The "25" in the part number explicitly denotes the 2.5V threshold variant.
Does the MAX6306UK25D1 provide a push/pull or open-drain reset output?
The MAX6306UK25D1 provides an active-low push/pull reset output (pin 1). Unlike open-drain variants such as the MAX6305, this output can both sink and source current - eliminating the need for an external pull-up resistor. It guarantees VOL ≤ 0.4V at ISINK = 3.2mA when VCC > 4.25V, enabling direct drive of standard CMOS and TTL reset inputs.
What is the meaning of "D1" in the MAX6306UK25D1 part number?
The "D1" suffix in MAX6306UK25D1 indicates the factory-programmed reset timeout period: D1 = 1ms minimum, D2 = 20ms minimum, D3 = 140ms minimum, and D4 = 1120ms minimum. Therefore, MAX6306UK25D1 asserts its RESET signal for at least 1ms after VCC rises above the 2.5V threshold or after MR is released, satisfying minimum hold-time requirements of most contemporary microcontrollers.
Can the MAX6306UK25D1 monitor an external voltage rail in addition to VCC?
Yes, the MAX6306UK25D1 includes a dedicated RST IN pin (pin 3) for monitoring an external voltage rail via an external resistor divider. This input compares the divided voltage against an internal 1.23V reference. When the external rail falls below the programmed threshold, it triggers reset independently of VCC - enabling dual-rail supervision in systems with separate analog/digital supplies or auxiliary power domains.
Is the manual reset (MR) input on the MAX6306UK25D1 internally pulled up?
Yes, the MR input (pin 4) on the MAX6306UK25D1 features an internal 63.5kΩ pull-up resistor to VCC, allowing it to be left unconnected for default high (no reset) operation. It accepts TTL-logic levels in 5V systems and CMOS-logic levels in 3V systems. Driving MR low forces an immediate reset, which remains active for the full 1ms timeout period after MR returns high.
MAX6306UK25D1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 2.5V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6306UK25D1 FAQ
1.How can I place an order for MAX6306UK25D1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6306UK25D1 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 MAX6306UK25D1 reliable?
The price and inventory of MAX6306UK25D1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6306UK25D1 is usually 5 days.
3.What payment methods are accepted for MAX6306UK25D1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6306UK25D1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6306UK25D1?
MAX6306UK25D1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6306UK25D1 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 MAX6306UK25D1?
For technical support, including MAX6306UK25D1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6306UK25D1 requirements.
6.How does Aetrix verify that MAX6306UK25D1 is sourced from the original manufacturer or authorized distributors?
All MAX6306UK25D1 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 MAX6306UK25D1 meets industry standards.
7.What is the process for return or replacement of MAX6306UK25D1?
All MAX6306UK25D1 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6306UK25D1, 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 MAX6306UK25D1 part is unused and in its original packaging.
Return procedure for MAX6306UK25D1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6306UK25D1 Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
