My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6315US26D3
- Part No.:
- MAX6315US26D3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US26D3.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:31,729
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6315US26D3 from Maxim Integrated is a low-power CMOS microprocessor supervisory circuit that monitors VCC supply voltage and asserts an open-drain active-low RESET signal when voltage falls below 2.63V or when manual reset (MR) is asserted. It provides a factory-trimmed 140ms minimum reset timeout period, operates from -40°C to +125°C, draws only 5µA supply current, and uses a SOT143-4 package. It is used in portable battery-powered equipment requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6315US26D3 datasheet, MAX6315US26D3 pinout, MAX6315US26D3 application, or MAX6315US26D3 equivalent, key selection criteria include its precise 2.63V reset threshold, 140ms timeout, open-drain output capable of level-shifting above VCC, immunity to short VCC transients, and guaranteed operation over extended temperature range.
Technical Context
The MAX6315US26D3 implements a precision voltage-monitoring comparator with laser-trimmed internal resistors to set a nominal 2.63V reset threshold, with ±3.5% tolerance over -40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a guaranteed-minimum 140ms reset pulse after VCC rises above threshold or MR deasserts.
It features an open-drain n-channel MOSFET RESET output rated for 0V to +6V pull-up, a manual reset input (MR) with 63kΩ internal pull-up, and immunity to VCC transients as short as 1µs when overdrive exceeds 20mV - enabling robust operation in noisy or battery-decaying environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V nominal, ±3.5% over -40°C to +125°C - ensures accurate brownout detection for 2.7V–2.8V logic rails |
| Reset Timeout Period | 140ms minimum - guarantees sufficient processor initialization time before release |
| Supply Current | 5µA typical at +25°C - enables multi-year operation in coin-cell–powered systems |
| Operating Temperature | -40°C to +125°C - supports automotive under-hood and industrial control applications |
| Output Type | Open-drain RESET - allows level-shifting up to +6V, independent of VCC |
| MR Input | Internal 63kΩ pull-up - eliminates external components for manual reset switch interface |
| VCC Range | 1.0V to 5.5V - functions during deep brownout and full supply conditions |
Pinout & Package
The MAX6315US26D3 is housed in a lead-free or leaded SOT143-4 surface-mount package (4-pin, 1.3mm × 2.9mm footprint), optimized for space-constrained portable and automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for internal circuitry and RESET sink current; must be low-impedance |
| 2 RESET | Active-low open-drain output | Sinks current when asserted; requires external pull-up to 0–6V; floats high otherwise |
| 3 MR | Manual reset input | Logic-low assertion forces RESET active; internal 63kΩ pull-up holds high when unused |
| 4 VCC | Supply and monitor input | Powers device and provides monitored voltage source for reset threshold comparison |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed threshold | 2.63V ±3.5% over full temperature range - eliminates calibration and external resistor networks |
| Four selectable timeout periods | 140ms minimum for MAX6315US26D3 - matches boot-time requirements of ARM Cortex-M0/M3 and similar MCUs |
| Open-drain RESET with >VCC capability | Supports pull-up to 6V while VCC = 2.6V - enables reset signaling across mixed-voltage domains |
| Immunity to short VCC transients | Rejects glitches <1µs wide at 20mV overdrive - prevents spurious resets in switching power supply environments |
| Ultra-low quiescent current | 5µA max at +25°C - extends battery life in always-on monitoring circuits |
Applications
| Battery-Powered Portable Devices | Automotive Body Control Modules |
|---|---|
Use Scenario: A handheld medical glucose meter powered by a single CR2032 coin cell must retain configuration memory and initiate safe boot after battery insertion or voltage sag. IC Role / Device Role / Timing Role: Supervisory circuit providing power-on reset and brownout detection with 2.63V threshold aligned to LiMnO₂ cell discharge curve. Use Value: 5µA supply current enables >5-year shelf life; 140ms timeout ensures full MCU register initialization before firmware execution. | Use Scenario: A door module ECU monitors 12V battery rail during cold cranking, where voltage may dip to 6–7V then recover rapidly. IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET during undervoltage events, with immunity to <1µs transients induced by relay switching noise. Use Value: -40°C to +125°C rating ensures reliability under hood; open-drain output interfaces directly to 5V microcontroller reset pin via 10kΩ pull-up. |
| Industrial Programmable Logic Controllers | Smart Energy Meters |
Use Scenario: A DIN-rail PLC maintains deterministic startup after AC power interruption or brownout caused by motor starting. IC Role / Device Role / Timing Role: Resets the main ARM-based controller when 3.3V auxiliary supply falls below 2.63V, with 140ms hold time to stabilize FPGA configuration. Use Value: Guaranteed operation to +125°C supports convection-cooled enclosures; MR pin enables remote watchdog-triggered reset via optocoupler. | Use Scenario: A revenue-grade electricity meter uses a supercapacitor backup to retain timekeeping and tariff data during mains failure. IC Role / Device Role / Timing Role: Monitors supercap voltage (2.7V nominal) and asserts RESET before data corruption occurs below 2.63V. Use Value: Laser-trimmed threshold ensures consistent trip point across production lots; SOT143 package fits tight meter PCB spacing constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6314US26D3-T | Bidirectional reset pin (not open-drain); same 2.63V threshold and 140ms timeout | Required for µPs with shared reset/data pins (e.g., some legacy 8051 derivatives) | Select only if bidirectional I/O is mandatory; MAX6315US26D3 is preferred for standard active-low reset inputs. |
| TPS3808G26DBVR | 2.63V threshold, 200ms timeout (min), 1.5µA IQ, SOT-23-5 package | Lower quiescent current but longer timeout; requires external pull-up on active-high RESET | Choose for ultra-low-power designs where 200ms delay is acceptable and active-high reset logic is used. |
Compared with MAX6314US26D3-T, the MAX6315US26D3 offers simpler interface via open-drain output and avoids bidirectional timing constraints; versus TPS3808G26DBVR, it provides shorter, more deterministic 140ms reset hold time and direct compatibility with legacy µP reset architectures requiring active-low assertion.
Availability
MAX6315US26D3 is available at Aetrix Electronics and suitable for portable/battery-powered equipment, automotive body electronics, and industrial programmable controllers requiring stable component supply, long-lifecycle support, and guaranteed -40°C to +125°C operation.
Supply support for MAX6315US26D3 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, automotive, and computing applications.
The MAX6315 series was developed specifically for cost-sensitive, space-constrained microprocessor reset supervision - delivering factory-trimmed accuracy, ultra-low power, and robust transient immunity in minimal SOT143 packaging.
FAQ
What is the exact reset threshold voltage for MAX6315US26D3?
The MAX6315US26D3 has a factory-trimmed nominal reset threshold of 2.63V, with a tolerance of ±3.5% over the full operating temperature range (-40°C to +125°C). This value is laser-trimmed during production and specified in the Electrical Characteristics table under "Reset Threshold (VTH)" for ordering option D3 (140ms timeout).
Does MAX6315US26D3 support operation with VCC below 2.63V?
Yes, the MAX6315US26D3 functions down to VCC = 1.0V, ensuring reliable reset assertion even during deep brownout conditions. Its RESET output remains guaranteed low for VCC > 1V, and the internal circuitry continues monitoring until VCC drops below 1V - critical for orderly shutdown in battery-powered systems.
Can the RESET output of MAX6315US26D3 be pulled up to a voltage higher than its VCC supply?
Yes, the MAX6315US26D3 features an open-drain RESET output rated for pull-up voltages from 0V to +6.0V - independent of the VCC supply voltage. This enables level-shifting applications, such as asserting reset on a 5V microcontroller from a 2.63V-supervised rail, using a simple external pull-up resistor.
What is the minimum reset timeout period for MAX6315US26D3?
The MAX6315US26D3 provides a guaranteed minimum reset timeout period of 140ms after VCC rises above the 2.63V threshold or after the manual reset (MR) input is deasserted. This value is fixed per the "D3" suffix and is validated across temperature and process corners per the datasheet's tRP specification.
Is MAX6315US26D3 pin-compatible with other devices in the MAX6315 family?
Yes, all MAX6315 variants - including MAX6315US26D3 - use the identical SOT143-4 package and share the same pinout (VCC, MR, RESET, GND). This allows drop-in replacement across different threshold and timeout combinations without PCB layout changes, provided the system design accommodates the specific VTH and tRP requirements.
MAX6315US26D3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-4
MAX6315US26D3 FAQ
1.How can I place an order for MAX6315US26D3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US26D3 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 MAX6315US26D3 reliable?
The price and inventory of MAX6315US26D3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US26D3 is usually 5 days.
3.What payment methods are accepted for MAX6315US26D3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US26D3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US26D3?
MAX6315US26D3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US26D3 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 MAX6315US26D3?
For technical support, including MAX6315US26D3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US26D3 requirements.
6.How does Aetrix verify that MAX6315US26D3 is sourced from the original manufacturer or authorized distributors?
All MAX6315US26D3 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 MAX6315US26D3 meets industry standards.
7.What is the process for return or replacement of MAX6315US26D3?
All MAX6315US26D3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US26D3, 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 MAX6315US26D3 part is unused and in its original packaging.
Return procedure for MAX6315US26D3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6315US26D3 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…
