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Analog Devices Inc./Maxim Integrated DS1836DS-10
- Part No.:
- DS1836DS-10
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DS1836DS-10.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:511
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Product details
Overview
DS1836DS-10 from Maxim Integrated is a dual-supply microprocessor supervisory circuit with integrated power switch, precision voltage monitor, and non-maskable interrupt generator. It provides 350ms reset assertion after VCC recovery, switches VOUT between VCC and VBAT at 2.6V/2.8V thresholds (3.3V version), and asserts NMI when IN drops below 1.25V - used in PIC-based embedded systems requiring battery backup and early power-fail warning.
For engineers reviewing the DS1836DS-10 datasheet, DS1836DS-10 pinout, DS1836DS-10 application, or DS1836DS-10 equivalent, key selection criteria include its 2.8V VCC-to-VBAT switchover threshold, 1.25V IN trip point, push-pull RST output, -40°C to +85°C operation, and compatibility with 3.3V logic systems.
Technical Context
The DS1836DS-10 implements a precision bandgap-referenced comparator for VCC monitoring and IN sense input, with hysteresis built into its power-switch transition points (VCCRTP = 2.75V, VCCFTP = 2.65V). Its RST output remains active for 350ms after VCC returns to tolerance, ensuring reliable microcontroller initialization.
It features an open-drain NMI output requiring external pull-up and a push-pull RST output capable of valid logic states down to 0V supply - enabling system shutdown sequencing even during full power collapse. The device operates across 1.2V–5.5V supply range and supports both VCC and VBAT inputs simultaneously.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 2.88V (typical) - triggers RST assertion when VCC falls below this threshold in 3.3V-mode operation |
| VCC-to-VBAT Switch Threshold | 2.65V (typical) - VOUT switches from VCC to VBAT when VCC drops below this level |
| VBAT-to-VCC Switch Threshold | 2.75V (typical) - VOUT switches back to VCC when VCC rises above this level |
| IN Sense Trip Voltage | 1.25V (typical) - generates NMI when external sense voltage falls below this reference |
| Reset Pulse Width | 350ms (typical) - ensures sufficient time for microcontroller stabilization after power recovery |
| Operating Temperature | -40°C to +85°C - validated for industrial-grade embedded applications without derating |
| Supply Current | 30–50μA (at 3.6V) - enables low-power battery-backed operation over extended periods |
Pinout & Package
DS1836DS-10 is available in 8-pin SO (150mil) surface-mount package. Pin assignments are identical to DS1836C/D variants per Maxim's official documentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Main power supply input | Primary 3.3V system rail; powers internal circuitry and determines RST/NMI behavior |
| VBAT | Battery backup supply input | Provides hold-up power when VCC fails; sourced by coin cell or supercapacitor |
| NC | No-connect terminal | Internally unconnected; must remain floating or tied to GND per layout guidelines |
| VOUT | Switched power output | Delivers power from either VCC or VBAT depending on real-time voltage comparison |
| GND | Ground reference | Common return path for all analog and digital functions; requires low-impedance PCB connection |
| IN | External sense input | High-impedance comparator input for custom power-rail monitoring via resistor divider |
| NMI | Non-maskable interrupt output | Open-drain signal asserting early warning of impending power loss; requires external 10kΩ pull-up |
| RST | Reset output | Push-pull active-low reset signal compatible with PIC and other 3.3V microcontrollers |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply power switching | Automatically selects VCC or VBAT for VOUT based on real-time voltage comparison with 100mV hysteresis |
| Early-warning NMI generation | Triggers interrupt at 1.25V IN threshold - enables >10μs advance notice before RST activation |
| Guaranteed 350ms reset pulse | Ensures microcontroller reset timing compliance even under marginal VCC recovery conditions |
| 0V-compatible RST output | Push-pull structure maintains valid logic state down to 0V supply - supports fail-safe shutdown sequencing |
| Wide supply range support | Operates from 1.2V to 5.5V on both VCC and VBAT - accommodates Li-ion, coin cell, and regulated rails |
Applications
| Industrial PLC I/O Module | PIC-Based Smart Sensor Node |
|---|---|
Use Scenario: Maintains real-time sensor data logging during brief AC mains interruptions using backup battery. IC Role / Device Role / Timing Role: Supervisory controller providing power-fail detection, battery switchover, and controlled MCU reset. Use Value: Enables uninterrupted operation for ≥200ms via VBAT hold-up and guarantees clean restart via 350ms RST pulse. | Use Scenario: Monitors primary 3.3V rail and auxiliary 5V input in battery-powered environmental sensor. IC Role / Device Role / Timing Role: Dual-voltage supervisor generating NMI at first sign of rail droop and RST upon full failure. Use Value: Delivers 10μs NMI warning before RST, allowing firmware to save critical state before shutdown. |
| Medical Infusion Pump Controller | Energy Meter with Tamper Detection |
Use Scenario: Ensures safe motor stop and fault logging during unexpected power loss in Class II medical equipment. IC Role / Device Role / Timing Role: Safety-critical reset generator with guaranteed 350ms pulse and zero-volt RST validity. Use Value: Meets IEC 60601-1 requirements for deterministic reset timing and fail-safe power sequencing. | Use Scenario: Detects tampering via sudden DC rail collapse in utility meter with supercapacitor backup. IC Role / Device Role / Timing Role: Precision voltage monitor triggering NMI on intentional rail shorting and RST on sustained dropout. Use Value: Achieves <1μs response to rapid VCC transients using internal bandgap reference and fast comparator. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326–26D2 | Fixed 2.63V reset threshold; no power-switching function; only RST output (no NMI) | Lacks battery switchover and early-warning interrupt - suitable only for basic reset-only use cases | Select when system uses single supply and requires only reset assertion without backup management |
| TPS3808G125 | Adjustable reset threshold (via external resistor); no VOUT switching or NMI output; push-pull RST only | Requires external components for voltage scaling; no integrated battery-handling capability | Choose when precise threshold tuning is needed and battery backup is managed externally |
Compared with MAX6326–26D2 and TPS3808G125, the DS1836DS-10 uniquely integrates power switching, NMI generation, and 350ms reset timing in one 8-pin SO package - eliminating discrete diodes, comparators, and timing RC networks required by alternatives.
Availability
DS1836DS-10 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, PIC-based smart sensor nodes, medical infusion pump controllers, and energy meters requiring stable component supply and long-term lifecycle support.
Supply support for DS1836DS-10 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, and computing applications.
The DS1836DS-10 belongs to Maxim's MicroManager family of supervisory circuits, engineered specifically for dual-supply microcontroller systems needing coordinated reset, battery switchover, and early power-fail warning.
FAQ
What is the exact VCC-to-VBAT switchover threshold for DS1836DS-10?
The DS1836DS-10 has a nominal VCC-to-VBAT switchover threshold of 2.65V (VCCFTP), with guaranteed range 2.60V to 2.70V at -40°C to +85°C. This value is specific to DS1836C/D variants and confirmed in Maxim's DS1836 datasheet revision 1, page 8. The DS1836DS-10 is a DS1836D variant with -10 suffix indicating 2.6V/2.8V switching profile.
Does DS1836DS-10 support true 0V operation on RST output?
Yes, DS1836DS-10 features a push-pull RST output that maintains valid logic states even when VCC and VBAT drop to 0V - verified in datasheet section "OUTPUT VALID CONDITIONS" (page 5). A 100kΩ pull-down resistor from RST to GND ensures low-state validity during full power collapse, enabling deterministic shutdown sequencing.
How does the IN pin function in DS1836DS-10, and what is its trip point?
The IN pin on DS1836DS-10 is a high-impedance comparator input referenced to an internal 1.25V bandgap. It asserts NMI when voltage at IN falls below 1.25V (range 1.15V–1.35V). External resistor dividers scale higher voltages (e.g., 4.5V) to this threshold - design example shown in Figure 3 of the datasheet.
Is DS1836DS-10 pin-compatible with DS1836A or DS1836C?
No - DS1836DS-10 is a DS1836D variant with 2.6V/2.8V switching thresholds and shares pinout with DS1836C/D, but differs electrically from DS1836A/B (3.8V/3.9V thresholds). Pin assignment is identical across all DS1836 variants (8-pin SO/DIP), but functional behavior depends on suffix-defined trip points.
What package options are available for DS1836DS-10?
DS1836DS-10 is offered exclusively in 8-pin SO (150mil) surface-mount package per Maxim's official ordering information. While the DS1836 family includes DIP variants, the DS1836DS-10 part number specifically denotes the SOIC version - confirmed by Maxim's packaging nomenclature and distributor listings (e.g., Digi-Key DS1836DS-10+).
DS1836DS-10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- MicroManager
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.88V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 200ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
DS1836DS-10 FAQ
1.How can I place an order for DS1836DS-10 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1836DS-10 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 DS1836DS-10 reliable?
The price and inventory of DS1836DS-10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1836DS-10 is usually 5 days.
3.What payment methods are accepted for DS1836DS-10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1836DS-10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1836DS-10?
DS1836DS-10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1836DS-10 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 DS1836DS-10?
For technical support, including DS1836DS-10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1836DS-10 requirements.
6.How does Aetrix verify that DS1836DS-10 is sourced from the original manufacturer or authorized distributors?
All DS1836DS-10 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 DS1836DS-10 meets industry standards.
7.What is the process for return or replacement of DS1836DS-10?
All DS1836DS-10 units undergo pre-shipment inspection (PSI). If there is an issue with DS1836DS-10, 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 DS1836DS-10 part is unused and in its original packaging.
Return procedure for DS1836DS-10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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