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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:2,340
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Product details
Overview
DS1836DS-10+ from Maxim Integrated is a dual-supply microprocessor supervisory circuit with integrated power-switching, NMI generation, and precision reset timing. It monitors VCC for 5V systems (trip point 4.25–4.50V), switches VOUT between VCC and battery at 3.8V/3.9V thresholds, asserts active-low CMOS RST for ≥350ms after recovery, and triggers NMI when IN falls below 1.25V - used in PIC-based embedded systems requiring fail-safe power management.
For engineers reviewing the DS1836DS-10+ datasheet, DS1836DS-10+ pinout, DS1836DS-10+ application, or DS1836DS-10+ equivalent, key selection criteria include VCC reset threshold tolerance (±0.125V), battery switchover hysteresis (0.1V), NMI response time (<1μs), RST output drive capability (10mA sink), and SO-8 package compatibility with industrial temperature range (-40°C to +85°C).
Technical Context
The DS1836DS-10+ implements a precision bandgap-referenced comparator for VCC monitoring and IN sense input, with independent trip-point hysteresis for power-up (VCCRTP = 3.90–4.0V) and power-down (VCCFTP = 3.80–3.9V). Its push-pull RST output maintains valid logic down to 0V VCC when externally pulled down, while the open-drain NMI requires a 10kΩ pull-up.
It integrates three co-located functions: voltage-monitoring reset generator, automatic dual-supply power switch (VCC/VBAT), and early-warning non-maskable interrupt - all sharing a single 8-pin SO package with no external timing components required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 4.25V to 4.50V - defines precise brown-out detection window for 5V systems |
| RST Active Duration | 200–500ms - ensures reliable microcontroller initialization after power recovery |
| VCC-to-VBAT Switch Point | 3.80–3.90V (falling), 3.90–4.0V (rising) - provides 0.1V hysteresis to prevent chatter during supply sag |
| IN Trip Voltage | 1.15–1.35V - enables user-configurable early power-fail warning via resistor divider |
| NMI Propagation Delay | ≤1μs - delivers sub-microsecond alert before system reset activates |
| Operating Temperature | -40°C to +85°C - supports industrial-grade deployment without derating |
| Supply Current | 30–55μA - enables ultra-low-power operation in battery-backed systems |
Pinout & Package
DS1836DS-10+ is housed in an 8-pin SOIC (150-mil width) package with gull-wing leads, RoHS-compliant, and rated for surface-mount reflow per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Main power supply input | Monitored 5V rail; source for VOUT when above trip threshold |
| VBAT | Battery backup supply input | Secondary power source; automatically selected when VCC drops below 3.8V |
| NC | No-connect terminal | Internally unconnected; must remain floating or grounded per layout guidelines |
| VOUT | Switched power output | Delivers regulated power from VCC or VBAT - not buffered; drives local logic only |
| GND | Analog/digital ground reference | Common return path for all internal comparators, references, and outputs |
| IN | User-defined sense input | High-impedance comparator input referenced to 1.25V internal bandgap; accepts divided system rail |
| NMI | Non-maskable interrupt output | Open-drain output requiring external 10kΩ pull-up; asserts low on IN < 1.25V |
| RST | Reset output | CMOS push-pull active-low reset signal; sinks 10mA, drives microcontroller /RESET pin directly |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply power switching | Automatically selects VCC or VBAT for VOUT with 0.1V hysteresis - eliminates manual switchover circuitry |
| Precision reset timing | Guaranteed 350ms minimum RST assertion after VCC recovery - meets PIC and 8051 reset timing requirements |
| Early-warning NMI | Sub-1μs response to IN voltage drop below 1.25V - enables controlled shutdown before reset activation |
| 0V-compatible RST output | Push-pull structure sustains valid logic state even when VCC = 0V (with external 100kΩ pull-down) |
| Single-supply operation | Functions with VCC or VBAT ≥1.2V - supports operation during deep brown-out or battery-only mode |
Applications
| Industrial PLC Controller | PIC-Based Data Logger |
|---|---|
Use Scenario: Maintains real-time clock and SRAM during AC mains failure using backup battery. IC Role / Device Role / Timing Role: Supervisory controller providing sequenced power switchover, NMI-triggered save routine, and timed reset release. Use Value: Enables >100ms of deterministic shutdown time before VCC collapse, preserving unsaved sensor data. | Use Scenario: Powers PIC16F877A and EEPROM during brief grid interruptions in remote environmental monitoring. IC Role / Device Role / Timing Role: Dual-rail supervisor generating RST for safe boot and NMI for immediate register dump. Use Value: Eliminates need for discrete reset IC + power switch + comparator - reduces BOM count by 3 components. |
| Medical Infusion Pump | Point-of-Sale Terminal |
Use Scenario: Ensures fail-safe motor shutdown and error logging when primary 5V DC supply sags below specification. IC Role / Device Role / Timing Role: System health monitor asserting NMI for emergency stop and RST for controlled reboot upon recovery. Use Value: Meets IEC 62304 Class C software safety requirements via deterministic, hardware-enforced timing. | Use Scenario: Prevents transaction corruption during brief UPS switchover in retail kiosks powered from 5V SMPS. IC Role / Device Role / Timing Role: Power integrity guardian detecting VCC transients and holding processor in reset until stable. Use Value: Guarantees 350ms minimum reset hold time - exceeds Intel 80x86 and ARM Cortex-M reset spec margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX692AESA+ | Fixed 4.65V reset threshold; no power-switching or NMI functionality | Suitable only for basic reset generation - lacks DS1836DS-10+'s dual-supply handoff and early-warning capability | Select when only reset supervision is needed and battery backup is handled externally |
| TPS3823-46DBVR | 3.08V fixed reset threshold; push-pull RST; no VOUT switching or NMI pin | Designed for 3.3V systems only; incompatible with 5V VCC monitoring or battery switchover use cases | Choose for cost-sensitive 3.3V applications where DS1836DS-10+ features are unnecessary |
Compared with MAX692AESA+ and TPS3823-46DBVR, DS1836DS-10+ uniquely integrates reset, power switching, and NMI in one SO-8 device - reducing board space and enabling coordinated power-fail response unattainable with discrete solutions.
Availability
DS1836DS-10+ is available at Aetrix Electronics and suitable for industrial PLC controllers, PIC-based data loggers, medical infusion pumps, and point-of-sale terminals requiring stable component supply across extended production lifecycles.
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 microprocessor-based systems needing coordinated power monitoring, battery backup, and deterministic reset behavior.
FAQ
What is the exact VCC reset threshold range for DS1836DS-10+?
The DS1836DS-10+ has a guaranteed VCC reset threshold of 4.25V (min) to 4.50V (max) at -40°C to +85°C. This 0.25V window is factory-trimmed and temperature-compensated using an internal bandgap reference, ensuring consistent brown-out detection across operating conditions without external calibration. DS1836DS-10+ uses this threshold to assert RST when VCC falls below specification and maintain it for ≥350ms after recovery.
Does DS1836DS-10+ support true 0V VCC operation for the RST output?
Yes - DS1836DS-10+ features a push-pull RST output that remains valid even when VCC drops to 0V, provided a 100kΩ pull-down resistor connects RST to GND. This design allows DS1836DS-10+ to hold the microcontroller in reset during complete power loss, preventing erratic execution. Unlike open-drain alternatives, DS1836DS-10+ does not require external pull-ups for RST, simplifying interface design.
How does the NMI function work in DS1836DS-10+ and what is its response time?
The NMI output in DS1836DS-10+ is triggered when the voltage at the IN pin falls below 1.25V (1.15–1.35V over temperature), using an internal precision comparator. Its propagation delay is ≤1μs, delivering sub-microsecond early warning of impending power failure. DS1836DS-10+ requires an external 10kΩ pull-up on NMI and supports user-defined sensing via resistor dividers - enabling DS1836DS-10+ to detect faults upstream of the main 5V rail.
What are the power-switching thresholds between VCC and VBAT for DS1836DS-10+?
DS1836DS-10+ switches VOUT from VBAT to VCC when VCC rises above 3.90–4.0V (VCCRTP), and back to VBAT when VCC falls below 3.80–3.9V (VCCFTP), yielding a 0.1V hysteresis. This prevents oscillation during marginal supply conditions. DS1836DS-10+ sustains VOUT regulation (VCC−0.3V or VBAT−0.3V) up to 100mA, making DS1836DS-10+ suitable for powering local logic during switchover.
Is DS1836DS-10+ compatible with both 5V and 3.3V systems?
DS1836DS-10+ is specified for 5V operation with VCC reset threshold centered at 4.375V and VCC-to-VBAT switching at ~3.85V. It is not rated for 3.3V-only systems - variants like DS1836CS-10+ (2.88V trip) serve that role. DS1836DS-10+ operates with VCC from 1.2V to 5.5V but delivers full supervisory functionality only within its 5V design envelope; using DS1836DS-10+ in 3.3V systems risks premature reset assertion.
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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