My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6316MUK29CY+T
- Part No.:
- MAX6316MUK29CY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6316MUK29CY+T.pdf
- Description:
- IC MPU/RESET CIRC 2.93V SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,090
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6316MUK29CY+T from Maxim Integrated is a 5-pin SOT23 microprocessor supervisory circuit with bidirectional active-low reset output, 2.93V factory-trimmed reset threshold, 140ms minimum reset timeout, and 1.6s typical watchdog timeout. It monitors VCC supply and μP activity in embedded systems, providing reset assertion during power-up, brownout, or software hang conditions - used in portable instrumentation and battery-powered controllers.
For engineers reviewing the MAX6316MUK29CY+T datasheet, MAX6316MUK29CY+T pinout, MAX6316MUK29CY+T application, or MAX6316MUK29CY+T equivalent, key selection criteria include bidirectional reset compatibility (e.g., Motorola 68HC11), guaranteed reset validity down to VCC = 1V, immunity to short negative VCC transients, and AEC-Q100 qualification for automotive-adjacent industrial use.
Technical Context
The MAX6316MUK29CY+T implements a bidirectional reset architecture with integrated 4.7kΩ pullup resistor and active P-channel pullup FET, enabling fast RESET rise time (<666ns at 5V/400pF) even with multiple devices on the bus. Its reset generator asserts when VCC drops below 2.93V ±2.5%, after MR low-to-high transition, or upon WDI timeout.
Watchdog functionality clears on any WDI edge (≥50ns pulse width) and times out after 1.6s (typical); manual reset input includes 52kΩ internal pullup and 100ns glitch rejection. The device operates across -40°C to +125°C and draws ≤12µA at 3.6V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V ±2.5% over -40°C to +125°C - ensures reliable brownout detection for 3.3V systems |
| Reset Timeout Period | 140ms (min) - guarantees sufficient hold time for μP initialization before release |
| Watchdog Timeout | 1.6s (typ) - balances fault detection responsiveness with software execution margin |
| Supply Current | ≤12µA at 3.6V - enables multi-year operation in battery-powered applications |
| Operating Temperature | -40°C to +125°C - supports industrial and automotive-qualified environments |
| Reset Output Type | Bidirectional active-low - directly interfaces with Motorola 68HC11 and similar μPs requiring bidirectional reset I/O |
| AEC-Q100 Qualified | Yes - meets stress test requirements for automotive electronics reliability |
Pinout & Package
MAX6316MUK29CY+T is housed in a RoHS-compliant 5-pin SOT23 package (package code U5+2A, outline 21-0057), with 0.95mm pitch, 2.9mm × 1.6mm footprint, and thermal resistance θJA = 255.9°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Bidirectional active-low reset output - sinks current when asserted; pulls up actively via internal FET + 4.7kΩ resistor when released |
| 2 | GND | Ground reference - common return path for all internal circuits and external reset bus |
| 3 | MR | Active-low manual reset input - internally pulled up to VCC via 52kΩ; 100ns glitch rejection prevents spurious resets |
| 4 | WDI | Watchdog input - edge-triggered; reset asserted if no transition occurs within 1.6s (typ) |
| 5 | VCC | Supply voltage input - monitored for undervoltage; reset asserted when VCC falls below 2.93V |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional reset with active pullup | Enables reliable two-cycle high-detection on μP reset lines (e.g., 68HC11) without external components or timing margin loss |
| Guaranteed reset validity to VCC = 1V | Ensures deterministic reset behavior during deep brownout, critical for fail-safe system recovery |
| Immunity to short negative VCC transients | Withstands ≤4µs, 100mV-under-threshold glitches - eliminates false resets from supply noise |
| No external components required | Integrates precision voltage reference, reset timer, watchdog, and pullup network - reduces BOM count and PCB area |
| Factory-trimmed thresholds and timeouts | Eliminates calibration overhead; 2.93V reset and 1.6s watchdog are production-tested and temperature-stable (±40ppm/°C) |
Applications
| Portable/Battery-Powered Equipment | Embedded Control Systems |
|---|---|
Use Scenario: Long-life handheld meter with lithium coin cell supply subject to voltage sag during measurement bursts. IC Role / Device Role / Timing Role: Supervisory IC monitoring VCC and asserting bidirectional reset to wake μP from sleep or force recovery after brownout. Use Value: 12µA quiescent current extends battery life; 2.93V threshold aligns with end-of-life cutoff for 3V systems; bidirectional interface preserves μP's reset-source diagnostics. | Use Scenario: Industrial PLC module requiring deterministic restart after firmware crash or power interruption. IC Role / Device Role / Timing Role: Watchdog-enabled supervisory circuit that forces hardware reset if main loop hangs, using WDI toggling as liveness signal. Use Value: 1.6s watchdog timeout provides ample margin for complex control cycles; 140ms reset hold ensures full μP register initialization before code execution resumes. |
| Intelligent Instruments | Controllers |
Use Scenario: Portable oscilloscope with FPGA-based acquisition engine and ARM Cortex-M host processor. IC Role / Device Role / Timing Role: Dual-role supervisor: monitors 3.3V rail for brownout and services WDI from ARM to detect lockups; RESET connects bidirectionally to both ARM and FPGA. Use Value: Bidirectional output avoids contention between ARM and FPGA reset drivers; AEC-Q100 qualification validates robustness in field-deployed instruments. | Use Scenario: HVAC controller with motor driver ICs and isolated communication interfaces. IC Role / Device Role / Timing Role: Central reset manager asserting synchronized reset to μP, gate drivers, and RS-485 transceivers during VCC instability. Use Value: Guaranteed reset assertion down to VCC = 1V prevents partial initialization; 5-pin SOT23 footprint minimizes space on dense control board. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316LUK29CY+T | Active-low push/pull reset output (not bidirectional); identical reset threshold, timeout, and watchdog specs | Requires external pullup for bidirectional μP interfaces; unsuitable for 68HC11-style reset arbitration | Select when system uses only standard active-low reset and no μP-level reset source identification is needed |
| TPS3808G18DBVR | Fixed 1.8V reset threshold; open-drain output; no bidirectional capability; 200ms min reset timeout | Lacks bidirectional support and 2.93V threshold; requires external pullup; not qualified for >105°C operation | Choose only for 1.8V logic domains where bidirectional reset is unnecessary and extended temperature range is not required |
Compared with MAX6316LUK29CY+T and TPS3808G18DBVR, the MAX6316MUK29CY+T uniquely delivers bidirectional reset with active pullup for μP source discrimination, precise 2.93V threshold for 3.3V systems, and full -40°C to +125°C operation - making it irreplaceable in applications requiring 68HC11 compatibility or automotive-grade reliability.
Availability
MAX6316MUK29CY+T is available at Aetrix Electronics and suitable for portable instrumentation, embedded control systems, and intelligent controllers requiring stable component supply, long-term lifecycle support, and AEC-Q100-qualified reliability.
Supply support for MAX6316MUK29CY+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, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.
The MAX6316–MAX6322 family targets microprocessor supervision in space-constrained, high-reliability systems - delivering integrated reset, watchdog, and manual reset functions in miniature SOT23 packages with factory-trimmed accuracy.
FAQ
What is the reset threshold voltage of the MAX6316MUK29CY+T?
The MAX6316MUK29CY+T has a factory-trimmed nominal reset threshold of 2.93V, with tolerance of ±2.5% over the full operating temperature range (-40°C to +125°C). This value is specified in Table 1 and Standard Versions table of the datasheet and is optimized for reliable brownout detection in 3.3V systems. The MAX6316MUK29CY+T does not require external adjustment or calibration.
Does the MAX6316MUK29CY+T support bidirectional reset functionality?
Yes, the MAX6316MUK29CY+T features a bidirectional active-low reset output specifically designed for microprocessors like the Motorola 68HC11 that require reset source arbitration. Its internal architecture combines a 4.7kΩ pullup resistor with an active P-channel FET to ensure fast RESET rise time (<666ns) even with multiple devices on the bus - a capability not present in push/pull or open-drain variants like MAX6316LUK29CY+T.
What is the watchdog timeout period for the MAX6316MUK29CY+T?
The MAX6316MUK29CY+T has a typical watchdog timeout period of 1.6 seconds, corresponding to the "Y" suffix in its ordering code. This value is production-tested and stable across temperature (±40ppm/°C). The watchdog timer clears on any rising or falling edge at the WDI pin and asserts reset if no transition occurs within this interval - providing robust software hang detection without requiring precise timing margins in firmware.
Is the MAX6316MUK29CY+T qualified for automotive applications?
The MAX6316MUK29CY+T is AEC-Q100 qualified, meeting stress testing requirements for automotive electronics reliability. While not marked with "/V" (which denotes full automotive qualification including PPAP), its -40°C to +125°C operating range, guaranteed performance down to VCC = 1V, and immunity to short negative VCC transients make it suitable for automotive-adjacent industrial applications such as body control modules and infotainment subsystems where AEC-Q100 compliance is required.
How does the manual reset (MR) input behave on the MAX6316MUK29CY+T?
The MR input on the MAX6316MUK29CY+T is active-low with an internal 52kΩ pullup resistor, allowing it to be left unconnected when unused. A low pulse ≥1.5µs (at -40°C to +125°C) forces reset assertion for the full 140ms timeout period. The input rejects fast transients (100ns glitches) and is designed for TTL/CMOS logic levels - but must be driven from the same supply as VCC to avoid violating absolute maximum ratings and damaging ESD protection structures.
MAX6316MUK29CY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- Output:
- Bidirectional
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6316MUK29CY+T FAQ
1.How can I place an order for MAX6316MUK29CY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6316MUK29CY+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 MAX6316MUK29CY+T reliable?
The price and inventory of MAX6316MUK29CY+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6316MUK29CY+T is usually 5 days.
3.What payment methods are accepted for MAX6316MUK29CY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6316MUK29CY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6316MUK29CY+T?
MAX6316MUK29CY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6316MUK29CY+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 MAX6316MUK29CY+T?
For technical support, including MAX6316MUK29CY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6316MUK29CY+T requirements.
6.How does Aetrix verify that MAX6316MUK29CY+T is sourced from the original manufacturer or authorized distributors?
All MAX6316MUK29CY+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 MAX6316MUK29CY+T meets industry standards.
7.What is the process for return or replacement of MAX6316MUK29CY+T?
All MAX6316MUK29CY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6316MUK29CY+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 MAX6316MUK29CY+T part is unused and in its original packaging.
Return procedure for MAX6316MUK29CY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6316MUK29CY+T 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…
