My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6834FXRD0+
- Part No.:
- MAX6834FXRD0+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6834FXRD0+.pdf
- Description:
- MAX6834 ULTRA-LOW-VOLTAGE VOLTAG
- Quantity:
- Payment:
- Shipping:
Inventory:1,813
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6834FXRD0+ from Maxim Integrated is an ultra-low-voltage, open-drain active-low microprocessor reset circuit in SC70-3 package, designed to monitor +1.05V supply rails with ±2.5% threshold accuracy over temperature. It asserts reset when VCC falls below 1.05V or during manual reset, maintains reset for 70µs (D0 timeout), and operates down to VCC = 0.55V while consuming only 7.5µA typical supply current - ideal for battery-powered µP systems requiring reliable brownout protection.
For engineers reviewing the MAX6834FXRD0+ datasheet, MAX6834FXRD0+ pinout, MAX6834FXRD0+ application, or MAX6834FXRD0+ equivalent, this device serves as a low-power, space-constrained voltage supervisor for 1.05V core supplies in portable instrumentation, embedded controllers, and low-voltage microcontroller power sequencing where open-drain reset output enables bidirectional reset I/O interfacing and level-shifting across multiple supply domains.
Technical Context
The MAX6834FXRD0+ implements a precision bandgap-based voltage comparator with 444mV internal reference, comparing VCC directly to a factory-trimmed 1.05V threshold (F suffix). Its reset assertion logic is immune to fast negative VCC transients ≤100ns and guarantees valid reset output down to VCC = 0.55V with 0.2V VOL at 200µA sink current.
This variant belongs to the MAX6834/MAX6837/MAX6840 subgroup featuring open-drain RESET output requiring external pullup, no MR input, and SC70-3 3-pin configuration. It lacks RESET-IN and manual reset functionality, distinguishing it from 4-pin variants like MAX6835–MAX6840.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.05V ±2.5% - precisely monitors 1.05V supply rails without external adjustment |
| Timeout Period | 70µs (D0 option) - provides minimal reset hold time for fast power-up recovery |
| Supply Current | 7.5µA typ at 1.2V - enables multi-year operation on coin-cell batteries |
| Operating Voltage | 0.55V to 3.6V - ensures reset validity during deep brownout down to sub-1V VCC |
| Output Type | Open-drain active-low - supports bidirectional reset I/O and level-shifting to higher voltage rails |
| Package | SC70-3 - 1.25mm × 2.0mm footprint saves PCB area in space-constrained designs |
| Temperature Range | -40°C to +85°C - qualified for industrial and portable equipment environments |
Pinout & Package
MAX6834FXRD0+ is housed in a 3-pin SC70-3 package (1.25mm × 2.0mm, 0.65mm pitch) with gull-wing leads. The package is RoHS-compliant (indicated by '+' suffix) and rated for reflow soldering per JEDEC J-STD-020.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be low-impedance connection |
| 2 | RESET | Open-drain active-low output; requires external pullup resistor to define high-level voltage and sink capability |
| 3 | VCC | Monitored supply input and power source; also defines operating range (0.55V–3.6V) |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 1.05V threshold | Eliminates external resistor divider and calibration effort for 1.05V core monitoring |
| 70µs reset timeout | Minimizes system initialization delay while ensuring sufficient deassertion timing for µP clock stabilization |
| 0.55V VCC minimum | Guarantees reset remains asserted through full power-down to near-zero supply, preventing undefined µP state |
| Open-drain RESET | Enables direct interface with bidirectional µP reset pins and level-shifting to 3.3V/5V reset logic without level translators |
| 7.5µA supply current | Reduces quiescent power in always-on monitoring paths, critical for battery-backed real-time clocks and sleep-mode supervision |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Wearable ECG sensor continuously powered by CR2032 coin cell, requiring guaranteed reset during battery voltage sag below 1.05V. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low reset to ARM Cortex-M0+ MCU during brownout, with 70µs timeout matching fast oscillator startup. Use Value: Prevents firmware corruption by holding MCU in reset until stable 1.05V core rail is restored, leveraging 7.5µA quiescent current to extend battery life beyond 3 years. |
Use Scenario: DIN-rail mounted analog input module operating from isolated 1.05V LDO, subject to 100ns noise spikes on 24V field bus coupling into supply. IC Role / Device Role / Timing Role: Immune voltage detector suppressing false resets from transient glitches while asserting reset on sustained <1.05V condition. Use Value: Maintains system reliability in electrically noisy factory environments via built-in 100ns glitch rejection and ±2.5% threshold stability over -40°C to +85°C. |
| Low-Power IoT Edge Node | Automotive Body Control Module (BCM) Subsystem |
|
Use Scenario: NB-IoT node sleeping at 2µA, waking periodically to sample sensors - must guarantee clean reset on cold-start from depleted Li-SOCl₂ battery. IC Role / Device Role / Timing Role: Primary reset generator tied to 1.05V RF SoC core rail, using open-drain output pulled to 3.3V to drive both SoC and external PMIC enable. Use Value: Enables single-supervisor reset distribution across mixed-voltage domains without additional level-shifters, reducing BOM count and layout complexity. |
Use Scenario: Seat control ECU deriving 1.05V core supply from buck converter, requiring fail-safe reset during load-dump-induced supply droop. IC Role / Device Role / Timing Role: Dedicated supervisor for 1.05V domain, asserting reset to Infineon AURIX TC3xx safety MCU via bidirectional reset pin. Use Value: Ensures ASIL-B compliant reset behavior by guaranteeing reset assertion down to 0.55V VCC and maintaining output validity during rapid supply collapse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6381XR24+T | Fixed 2.4V threshold, 140ms timeout, push-pull active-low output, SC70-3 | Designed for higher-voltage I/O rail monitoring, not 1.05V core rails | Select only if supervising >2.0V supplies and longer reset hold time is required |
| TPS3106K33DBVR | Fixed 3.3V threshold, 200ms timeout, open-drain active-low, SOT-23-3 | Targets 3.3V systems; lacks sub-1.2V operation and 70µs timeout option | Use for 3.3V domains where TI's automotive qualification and wider temp range (+125°C) are needed |
Compared with MAX6834FXRD0+, MAX6381XR24+T offers longer reset hold but cannot supervise 1.05V rails, while TPS3106K33DBVR supports automotive temp range but lacks the ultra-low-voltage operation and minimal 70µs timeout essential for fast-boot µP systems.
Availability
MAX6834FXRD0+ is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, low-power IoT edge nodes, and automotive BCM subsystems requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6834FXRD0+ 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 connectivity in industrial, automotive, and consumer applications.
The MAX6832–MAX6840 family was engineered specifically for ultra-low-voltage microprocessor reset supervision in battery-powered and energy-constrained systems, emphasizing sub-1.2V threshold accuracy, nanoamp quiescent current, and SC70 packaging.
FAQ
What is the exact reset threshold voltage of MAX6834FXRD0+ and how is it trimmed?
The MAX6834FXRD0+ has a factory-trimmed reset threshold of 1.05V with ±2.5% accuracy over -40°C to +85°C. This value is set by laser trimming during wafer sort and verified across temperature using the internal 444mV reference. The 'F' suffix in the part number explicitly denotes the 1.05V threshold option per Maxim's Threshold Suffix Guide.
Does MAX6834FXRD0+ include a manual reset (MR) input or RESET-IN pin?
No, MAX6834FXRD0+ does not include MR or RESET-IN functionality. It is a 3-pin SC70-3 device with only GND, RESET, and VCC pins. Manual reset and adjustable threshold features are exclusive to 4-pin variants (e.g., MAX6835–MAX6840), as confirmed by the Pin Description tables and ordering information in the datasheet.
What is the minimum VCC voltage at which MAX6834FXRD0+ guarantees valid reset output?
MAX6834FXRD0+ guarantees valid reset output down to VCC = 0.55V. Below this voltage, the internal circuitry ceases to actively sink current on the open-drain RESET pin. This specification is explicitly stated in the Absolute Maximum Ratings and Electrical Characteristics tables under "Guaranteed Reset Valid to VCC".
Can MAX6834FXRD0+ be used with a pullup voltage higher than its VCC supply?
Yes, MAX6834FXRD0+ supports pullup voltages up to +6.0V on the RESET pin, independent of VCC. This is confirmed in the Absolute Maximum Ratings table ("Open-Drain RESET … -0.3V to +6.0V") and enables level-shifting applications - for example, pulling RESET to 3.3V or 5V while monitoring a 1.05V VCC rail.
What timeout period is implemented in MAX6834FXRD0+ and how is it selected?
MAX6834FXRD0+ implements the D0 timeout option: 70µs typical active reset period. This is determined by the 'D0' suffix embedded in the part number per the Active Timeout Period Guide (Table 2). The timeout is fixed and internally programmed - no external components or configuration pins are required to set or adjust it.
MAX6834FXRD0+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.05V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 70µs Typical
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6834FXRD0+ FAQ
1.How can I place an order for MAX6834FXRD0+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6834FXRD0+ 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 MAX6834FXRD0+ reliable?
The price and inventory of MAX6834FXRD0+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6834FXRD0+ is usually 5 days.
3.What payment methods are accepted for MAX6834FXRD0+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6834FXRD0+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6834FXRD0+?
MAX6834FXRD0+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6834FXRD0+ 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 MAX6834FXRD0+?
For technical support, including MAX6834FXRD0+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6834FXRD0+ requirements.
6.How does Aetrix verify that MAX6834FXRD0+ is sourced from the original manufacturer or authorized distributors?
All MAX6834FXRD0+ 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 MAX6834FXRD0+ meets industry standards.
7.What is the process for return or replacement of MAX6834FXRD0+?
All MAX6834FXRD0+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6834FXRD0+, 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 MAX6834FXRD0+ part is unused and in its original packaging.
Return procedure for MAX6834FXRD0+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6834FXRD0+ 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…
