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Analog Devices Inc./Maxim Integrated DS1836A-10
- Part No.:
- DS1836A-10
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
DS1836A-10.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,741
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Product details
Overview
DS1836A-10 from Maxim Integrated is a 5V microprocessor supervisory circuit with power-switching and non-maskable interrupt (NMI) functions. It monitors VCC for out-of-tolerance conditions, asserts RST for 350ms after recovery, switches VOUT between VCC and VBAT at 3.8V/3.9V thresholds, and triggers NMI when IN drops below 1.25V - used in PIC-based embedded systems requiring dual-supply failover and early power-fail warning.
For engineers reviewing the DS1836A-10 datasheet, DS1836A-10 pinout, DS1836A-10 application, or DS1836A-10 equivalent, key selection criteria include its 4.25V–4.50V VCC reset trip point, push-pull RST output, 350ms reset timeout, dual-supply switching behavior, and NMI sensing capability at the IN pin.
Technical Context
The DS1836A-10 implements a precision bandgap-referenced comparator to detect VCC deviations relative to its 4.25V–4.50V trip window, generating a reset pulse with guaranteed 350ms minimum assertion time after VCC returns to tolerance. Its internal power-switch logic routes VOUT to VBAT until VCC rises above 3.9V, then latches to VCC until VCC falls below 3.8V.
A dedicated high-impedance IN pin compares external voltage dividers against a stable 1.15V–1.35V internal reference, asserting open-drain NMI when input drops below threshold. The RST output uses a CMOS push-pull structure enabling valid logic levels down to 0V supply, unlike open-drain alternatives requiring external pull-ups.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Trip Point | 4.25V (min) to 4.50V (max); defines precise 5V supply brownout detection threshold |
| Reset Timeout | 350ms (typical); ensures microcontroller reset hold time meets PIC and other MCU requirements |
| VCC-to-VBAT Switch Threshold | 3.80V–3.90V (falling/rising); enables seamless backup power handoff without supply interruption |
| IN Trip Voltage | 1.15V–1.35V; supports user-configurable early-warning sensing via external resistor divider |
| Operating Temp Range | −40°C to +85°C; qualified for industrial-grade embedded applications |
| RST Output Type | CMOS push-pull; eliminates need for external pull-up and maintains valid logic down to 0V VCC |
| Supply Current | 30μA–55μA (typ); ultra-low quiescent draw suitable for battery-backed systems |
Pinout & Package
DS1836A-10 is available in 8-pin DIP (300mil) and 8-pin SO (150mil) packages. Both share identical pin mapping and electrical behavior.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Main power supply input | 5V nominal supply; reset and switching decisions based on this rail's voltage level |
| VBAT | Backup battery supply input | Provides continuous power to VOUT when VCC drops below 3.8V; leakage < 0.1μA in off state |
| NC | No-connect terminal | Not internally bonded; must be left unconnected per design |
| VOUT | Switched power output | Delivers power from VCC or VBAT depending on real-time comparison; drives system VDD rail |
| GND | Ground reference | Common return path for all analog and digital circuitry; required for accurate voltage sensing |
| IN | Sense input for NMI generation | High-impedance comparator input referenced to 1.25V internal bandgap; enables custom trip-point configuration |
| NMI | Non-maskable interrupt output | Open-drain output requiring external 10kΩ pull-up; signals imminent power loss before reset assertion |
| RST | Reset output | CMOS push-pull active-low reset signal; remains asserted ≥350ms after VCC recovery |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply power switching | Automatically selects VCC or VBAT for VOUT with hysteresis (3.8V/3.9V), eliminating manual switchover circuitry |
| Early-warning NMI generation | Independent 1.25V-referenced comparator on IN pin provides >10μs advance notice of power failure before RST activation |
| Guaranteed 350ms reset timeout | Ensures reliable MCU initialization across temperature and supply variations without external timing components |
| Push-pull RST output | Drives reset line actively high/low without pull-up resistors, reducing BOM count and enabling 0V VCC operation with optional pull-down |
| Temperature-compensated reference | Bandgap-derived 1.25V reference stable over −40°C to +85°C, ensuring consistent trip points across operating range |
Applications
| Industrial PLC Controller | PIC-Based Data Logger |
|---|---|
Use Scenario: Maintains real-time control during AC mains interruption using supercapacitor or coin-cell backup. IC Role / Device Role / Timing Role: Supervisory IC providing brownout detection, controlled power switchover, and early NMI warning to initiate graceful shutdown. Use Value: Prevents data corruption by triggering firmware save routines >10μs before reset, leveraging DS1836A-10's independent IN comparator and 350ms RST hold. | Use Scenario: Powers sensor interface and flash memory in remote environmental monitoring nodes with intermittent solar charging. IC Role / Device Role / Timing Role: Dual-role device: supplies regulated VDD via VOUT switching and asserts RST/NMI to coordinate low-power wake/sleep transitions. Use Value: Reduces discrete component count by integrating reset timing, supply monitoring, and backup switchover - directly replacing 3+ discrete comparators, timers, and MOSFETs. |
| Medical Infusion Pump | Point-of-Sale Terminal |
Use Scenario: Ensures safe motor stop and alarm activation during unexpected 5V rail collapse in battery-assisted devices. IC Role / Device Role / Timing Role: Safety-critical supervisor generating fail-safe reset and NMI signals synchronized to VCC decay profile. Use Value: Meets IEC 60601-1 timing requirements via guaranteed 350ms RST assertion and sub-10μs NMI response, validated across −40°C to +85°C. | Use Scenario: Protects transaction integrity during brief grid sags or UPS transfer delays in retail kiosks. IC Role / Device Role / Timing Role: System-level power manager detecting 5V brownouts and initiating secure session termination before VCC drops below MCU operational threshold. Use Value: Eliminates need for external RC reset circuits while supporting both 5V main and 3.3V logic rails through configurable VOUT routing and precise trip-point hysteresis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX692A | Single 5V supply only; no VOUT switching; fixed 4.65V reset threshold; open-drain RST | Lacks battery switchover and NMI functionality; suited for simpler reset-only designs | Select when only basic reset supervision is needed and backup power management is handled externally |
| TPS3823-50 | Fixed 4.63V reset threshold; no NMI pin; no VOUT switching; push-pull RST; 200ms reset timeout | Designed for TI MCU ecosystems; lacks early-warning interrupt and dual-supply routing | Choose for cost-sensitive 5V systems where 200ms reset hold suffices and NMI is unnecessary |
Compared with MAX692A and TPS3823-50, the DS1836A-10 uniquely integrates three functions-precision reset generation, automatic VCC/VBAT switchover, and early NMI signaling-in a single 8-pin package, enabling compact, fail-safe designs where power continuity and predictive shutdown are critical.
Availability
DS1836A-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 and long-term lifecycle support.
Supply support for DS1836A-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) is a semiconductor company specializing in analog, mixed-signal, and power-management ICs for industrial, communications, and computing applications.
The DS1836A-10 belongs to Maxim's MicroManager family of supervisory circuits, designed specifically to replace discrete reset, power-switching, and power-fail warning circuits in microprocessor-based systems operating from 5V supplies.
FAQ
What is the exact VCC reset trip point range for DS1836A-10?
The DS1836A-10 has a specified VCC reset trip point of 4.25V (minimum) to 4.50V (maximum), with typical value 4.37V. This range ensures reliable detection of 5V supply brownout while accommodating manufacturing tolerances and temperature drift. The DS1836A-10's trip point is distinct from DS1836C/D variants, which operate at 2.6V–2.97V for 3.3V systems.
Does DS1836A-10 support operation with 3.3V main supply?
No, DS1836A-10 is specifically configured for 5V systems. Its VCC reset trip point (4.25V–4.50V) and power-switch thresholds (3.8V/3.9V) are optimized for 5V nominal operation. For 3.3V applications, use DS1836C-10 or DS1836D-10, which feature 2.80V–2.97V reset thresholds and 2.6V/2.8V switching points.
How does the NMI function work in DS1836A-10?
The DS1836A-10's NMI output is triggered when voltage at the IN pin falls below 1.15V–1.35V (typical 1.25V), using an internal bandgap reference. This allows early warning of power failure before VCC drops to the reset threshold. The open-drain NMI requires a 10kΩ pull-up resistor and provides >10μs advance notice relative to RST assertion, enabling firmware-initiated shutdown in DS1836A-10-based systems.
Can DS1836A-10 maintain valid RST output when VCC drops to 0V?
Yes - DS1836A-10's RST output uses a CMOS push-pull structure that remains functional even as VCC declines to 0V, provided VBAT is present. To ensure valid low-state output under 0V VCC, a 100kΩ pull-down resistor from RST to GND is recommended. This capability is unique to DS1836A/C variants and not supported by DS1836B/D.
What package options are available for DS1836A-10?
DS1836A-10 is offered in two industry-standard packages: 8-pin plastic DIP (300mil width) and 8-pin SO (150mil width). Both packages share identical pinout, thermal characteristics, and electrical specifications. The SO package supports surface-mount assembly for space-constrained PCBs, while the DIP variant facilitates prototyping and through-hole manufacturing.
DS1836A-10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- MicroManager
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.37V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 200ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
DS1836A-10 FAQ
1.How can I place an order for DS1836A-10 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1836A-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 DS1836A-10 reliable?
The price and inventory of DS1836A-10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1836A-10 is usually 5 days.
3.What payment methods are accepted for DS1836A-10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1836A-10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1836A-10?
DS1836A-10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1836A-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 DS1836A-10?
For technical support, including DS1836A-10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1836A-10 requirements.
6.How does Aetrix verify that DS1836A-10 is sourced from the original manufacturer or authorized distributors?
All DS1836A-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 DS1836A-10 meets industry standards.
7.What is the process for return or replacement of DS1836A-10?
All DS1836A-10 units undergo pre-shipment inspection (PSI). If there is an issue with DS1836A-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 DS1836A-10 part is unused and in its original packaging.
Return procedure for DS1836A-10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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