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Analog Devices Inc./Maxim Integrated DS1836C-10+
- Part No.:
- DS1836C-10+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
DS1836C-10+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,642
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Product details
Overview
DS1836C-10+ from Maxim Integrated is a 3.3V microprocessor supervisory circuit combining power-on reset, battery backup switching, and non-maskable interrupt generation. It monitors VCC with 2.88V trip point (typ), switches VOUT between VCC and VBAT at 2.65V/2.75V thresholds, asserts RST for 350ms after recovery, and triggers NMI when IN falls below 1.25V - used in PIC-based embedded systems with dual-supply resilience requirements.
For engineers reviewing the DS1836C-10+ datasheet, DS1836C-10+ pinout, DS1836C-10+ application, or DS1836C-10+ equivalent, key selection criteria include its 3.3V-specific power-switching thresholds, push-pull RST output, NMI sensing capability, -40°C to +85°C operation, and dual-package availability (8-pin SO/DIP) for legacy and space-constrained designs.
Technical Context
The DS1836C-10+ integrates three tightly coupled functions: precision voltage monitoring using an on-chip bandgap reference, automatic power-source arbitration between VCC and VBAT, and early-warning NMI generation via high-impedance IN pin. Its reset assertion logic is synchronized to VCC slew rate and maintains active state for 350ms post-recovery.
Unlike DS1836A/B variants, DS1836C-10+ uses 2.65V falling and 2.75V rising thresholds for VCC↔VBAT switching, enabling compatibility with 3.3V systems where supply droop occurs earlier. The push-pull RST output sustains valid logic down to 0V VCC, while NMI requires external 10kΩ pull-up and responds within 1μs of IN crossing 1.25V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 2.88V (typ); triggers reset during 3.3V supply brownout before critical logic failure |
| VCC→VBAT Switch Threshold | 2.65V (typ); initiates battery switchover before VCC collapses below system hold-up margin |
| VBAT→VCC Switch Threshold | 2.75V (typ); restores main supply only after stable recovery, preventing chattering |
| RST Active Duration | 350ms (typ); ensures full microcontroller initialization and clock stabilization post-power-up |
| IN Trip Voltage | 1.25V (typ); enables flexible early-warning sensing of upstream rails via resistor divider |
| Operating Temp Range | -40°C to +85°C; qualified for industrial-grade embedded control and telemetry applications |
| Supply Current | 30–50μA (typ at 3.6V); minimizes standby drain on backup battery |
Pinout & Package
DS1836C-10+ is available in 8-pin SO (150mil) and 8-pin DIP (300mil) packages. Both share identical pin mapping and functional assignment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Main power supply input | 3.3V nominal input; monitored for reset and switch control; supports 1.2V–5.5V operation |
| VBAT | Battery backup supply input | Accepts 1.2V–5.5V; powers VOUT when VCC drops below 2.65V; <0.1μA leakage in off-state |
| NC | No-connect terminal | Internally unconnected; must be left floating or tied to GND per layout best practice |
| VOUT | Switched power output | Delivers regulated power from VCC or VBAT; outputs VCC−0.3V or VBAT−0.3V under load |
| GND | Ground reference | Common return for all analog and digital functions; required for accurate voltage sensing |
| IN | Non-maskable interrupt sense input | High-impedance comparator input; trips at 1.25V; accepts divided rail voltages up to VCC/VBAT |
| NMI | Open-drain NMI output | Asserts low on IN threshold breach; requires external 10kΩ pull-up for proper logic level |
| RST | Push-pull reset output | Active-low reset signal; remains valid even if VCC = 0V due to internal pull-down path |
Key Features
| Feature | Design Value |
|---|---|
| 3.3V-optimized switching thresholds | Enables reliable battery switchover in 3.3V systems without external hysteresis components |
| Push-pull RST with 0V-VCC validity | Guarantees deterministic reset state during complete power collapse, eliminating need for external pull-down |
| Programmable NMI sensing via IN pin | Allows user-defined early-warning point on any DC rail using simple resistor divider, extending system shutdown time |
| Integrated temperature-compensated reference | Delivers ±1.5% trip accuracy over -40°C to +85°C without calibration or trimming |
| Dual-package footprint compatibility | SO and DIP versions share identical pinout and electrical behavior, easing prototyping-to-production transition |
Applications
| Industrial PLC I/O Module | PIC-Based Data Logger |
|---|---|
Use Scenario: Maintains real-time clock and SRAM during AC mains interruption using coin-cell backup. IC Role / Device Role / Timing Role: Supervisory controller managing power source handover and asserting controlled reset to PIC16F877A. Use Value: 350ms RST hold time ensures full register save before shutdown; 2.65V switchover preserves >90% of battery capacity during brief dips. | Use Scenario: Detects early-stage power degradation in solar-charged remote sensor node before brownout. IC Role / Device Role / Timing Role: Early-warning monitor generating NMI to trigger immediate data flush and sleep entry on PIC18F25K22. Use Value: 1.25V IN threshold enables sensing at 4.5V input rail via R1/R2 divider, providing 120ms advance warning before RST activation. |
| Medical Infusion Pump Controller | Automotive Telematics Gateway |
Use Scenario: Ensures fail-safe shutdown and EEPROM write completion during vehicle battery voltage sag. IC Role / Device Role / Timing Role: Dual-supply supervisor coordinating VCC/VBAT handover and asserting RST to dsPIC33EP256MC502. Use Value: Push-pull RST remains valid at 0V VCC, guaranteeing reset assertion even during total loss of main supply. | Use Scenario: Monitors 12V-to-3.3V DC/DC output in CAN-connected gateway during engine cranking. IC Role / Device Role / Timing Role: Power integrity monitor triggering NMI to wake TMS320F280049C and initiate graceful CAN bus disengagement. Use Value: 2.75V VBAT→VCC re-engagement threshold prevents oscillation during noisy cranking transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6361KA33+T | Single 3.3V reset IC with 200ms timeout; no battery switch or NMI function | Lacks power-source arbitration and early-warning interrupt; suitable only for basic reset-only use cases | Select when system uses dedicated backup regulator and requires minimal BOM count |
| TPS3808G33DBVR | 3.3V supervisor with 200ms reset delay; open-drain RST; no VOUT switching or NMI | Requires external diode-OR or ideal diode for battery backup; no integrated sensing input | Choose for TI ecosystem designs needing SOT-23 footprint and ultra-low quiescent current (1.5μA) |
Compared with MAX6361KA33+T and TPS3808G33DBVR, DS1836C-10+ uniquely integrates reset, battery switchover, and NMI in one 8-pin package - reducing board area by 40% and eliminating ≥3 discrete components versus split-function alternatives.
Availability
DS1836C-10+ is available at Aetrix Electronics and suitable for industrial PLC I/O modules, PIC-based data loggers, medical infusion pump controllers, and automotive telematics gateways requiring stable component supply across long production lifecycles.
Supply support for DS1836C-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 and mixed-signal ICs for industrial, communications, and computing applications, emphasizing reliability, integration, and thermal robustness.
The DS1836 family targets embedded systems requiring coordinated power supervision, battery backup, and deterministic reset - especially in PIC and dsPIC microcontroller platforms where firmware-level power management is constrained.
FAQ
What is the exact VCC reset trip point for DS1836C-10+?
The DS1836C-10+ has a guaranteed VCC reset trip point of 2.80V (min), 2.88V (typ), and 2.97V (max) over temperature. This 3.3V-specific threshold ensures reset activation before downstream logic enters undefined states during brownout conditions, and is distinct from the DS1836A-10+'s 4.25V–4.50V range.
Does DS1836C-10+ support true 0V-VCC reset validity?
Yes, DS1836C-10+ features a push-pull RST output that maintains valid logic levels even when VCC drops to 0V, thanks to an internal pull-down path. This eliminates the need for external resistors to guarantee reset assertion during total power loss - a key differentiator from open-drain supervisors like TPS3808G33DBVR.
How does the NMI function work on DS1836C-10+?
The NMI output on DS1836C-10+ activates when the voltage at the IN pin falls below 1.25V (typ). Since IN is high-impedance, users configure a resistor divider from a monitored rail to set the precise trip point - e.g., a 260kΩ/100kΩ divider triggers NMI at 4.5V. An external 10kΩ pull-up is mandatory for proper NMI logic levels.
What are the VCC-to-VBAT and VBAT-to-VCC switching thresholds for DS1836C-10+?
DS1836C-10+ switches VOUT from VCC to VBAT when VCC falls below 2.60V (min), 2.65V (typ), or 2.70V (max). It switches back from VBAT to VCC when VCC rises above 2.70V (min), 2.75V (typ), or 2.80V (max). This 100mV hysteresis prevents oscillation during marginal supply conditions.
Is DS1836C-10+ compatible with both SO and DIP footprints?
Yes, DS1836C-10+ is manufactured in both 8-pin SO (150mil) and 8-pin DIP (300mil) packages with identical pinout and electrical specifications. Engineers can prototype on DIP sockets and transition to SO for volume production without redesigning the schematic or layout.
DS1836C-10+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- MicroManager
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.88V
- 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
DS1836C-10+ FAQ
1.How can I place an order for DS1836C-10+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1836C-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 DS1836C-10+ reliable?
The price and inventory of DS1836C-10+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1836C-10+ is usually 5 days.
3.What payment methods are accepted for DS1836C-10+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1836C-10+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1836C-10+?
DS1836C-10+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1836C-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 DS1836C-10+?
For technical support, including DS1836C-10+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1836C-10+ requirements.
6.How does Aetrix verify that DS1836C-10+ is sourced from the original manufacturer or authorized distributors?
All DS1836C-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 DS1836C-10+ meets industry standards.
7.What is the process for return or replacement of DS1836C-10+?
All DS1836C-10+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1836C-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 DS1836C-10+ part is unused and in its original packaging.
Return procedure for DS1836C-10+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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