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Analog Devices Inc./Maxim Integrated DS1708SESA
- Part No.:
- DS1708SESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DS1708SESA.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,897
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Product details
Overview
DS1708SESA from Maxim Integrated is a 3.3V ±10% supply voltage supervisor IC with dual active-high/active-low reset outputs, non-maskable interrupt (NMI), and pushbutton reset debouncing. It monitors VCC, an external sense point (IN), and PBRST to ensure microprocessor reliability during power transients and failures in industrial embedded systems.
For engineers reviewing the DS1708SESA datasheet, DS1708SESA pinout, DS1708SESA application, or DS1708SESA equivalent, key selection criteria include its 2.93V–3.00V VCC trip point, 130ms minimum reset pulse width, NMI early-warning capability at 1.25V IN threshold, and SOIC-8 industrial-grade packaging.
Technical Context
The DS1708SESA implements a precision bandgap-referenced comparator for VCC monitoring and a separate high-impedance IN input for upstream voltage sensing. Its internal 40kΩ pull-up on PBRST enables direct pushbutton connection with hardware debouncing and guaranteed 130ms reset assertion upon release.
NMI generation occurs when the IN pin voltage falls below 1.25V (±50mV), with 100µV hysteresis and 5µs noise immunity; RST and RST outputs activate when VCC drops below 2.93V and remain asserted for ≥130ms after VCC recovery, ensuring processor stabilization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 2.93V to 3.00V - precise 3.3V ±10% supply monitoring threshold |
| Reset Pulse Width | ≥130ms - ensures full microprocessor and power supply stabilization post-recovery |
| IN Trip Voltage | 1.25V ±0.05V - configurable upstream voltage sensing via external resistor divider |
| NMI Pulse Width | ≥200µs - provides early power-fail warning with noise-immune timing |
| Operating Temp | −40°C to +85°C - qualified for industrial ambient environments |
| Supply Current | 50µA at VCC < 3.6V - ultra-low quiescent consumption for battery-sensitive designs |
| Package | 8-pin SOIC (150-mil) - surface-mount compatible with standard PCB assembly |
Pinout & Package
DS1708SESA is housed in an 8-pin SOIC (150-mil) package with gull-wing leads, JEDEC MS-012AC compliant, 1.75mm max height, and Pb-free plating per RoHS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PBRST | Pushbutton Reset Input | Active-low, internally pulled up to VCC (40kΩ typical); debounced to guarantee ≥130ms RST assertion |
| VCC | Power Supply Input | Primary supply rail (1.2V–5.5V); powers internal reference, comparators, and outputs |
| GND | Ground Reference | Return path for all internal circuits and output drivers |
| IN | Voltage Sense Input | High-impedance (≤1µA leakage) input for external DC voltage monitoring via resistor divider |
| RST | Active-High Reset Output | Open-drain, 10mA sink capability; asserts high when VCC or IN fault detected |
| RST | Active-Low Reset Output | Push-pull, VCC-referenced; asserts low synchronously with RST during faults |
| NC | No Connect | Unbonded die pad; must be left floating or tied to GND per layout guidelines |
| NMI | Non-Maskable Interrupt Output | Open-drain, active-low pulse (≥200µs) triggered by IN voltage decay below 1.25V |
Key Features
| Feature | Design Value |
|---|---|
| Dual-reset output architecture | Simultaneous RST (active-high) and RST (active-low) eliminate level-shifting needs in mixed-logic systems |
| Configurable voltage monitoring | Separate VCC and IN inputs enable both local supply and upstream rail supervision in single-chip solution |
| Hardware pushbutton debouncing | Internal timing circuit guarantees ≥130ms reset pulse regardless of button bounce duration or contact quality |
| Early power-fail warning | NMI output triggers ≥200µs before RST activation, enabling controlled data save or state preservation |
| Industrial temperature operation | Validated performance across −40°C to +85°C ensures reliability in harsh environments without derating |
Applications
| Industrial PLC Controller | Medical Diagnostic Equipment |
|---|---|
Use Scenario: Power interruption during real-time sensor data acquisition and firmware update cycles. IC Role / Device Role / Timing Role: DS1708SESA acts as system-level power supervisor, asserting RST to halt CPU execution and NMI to trigger emergency RAM dump before brownout. Use Value: Prevents corrupted firmware writes and sensor data loss by enforcing deterministic reset sequencing with ≥130ms hold time and early NMI warning. |
Use Scenario: Unplanned AC mains dropout in portable ultrasound units requiring immediate safe shutdown. IC Role / Device Role / Timing Role: DS1708SESA monitors both 3.3V logic rail and 12V analog supply (via IN divider), generating coordinated RST/NMI signals for controlled power-down. Use Value: Enables retention of last valid image frame and calibration state using NMI-triggered backup capacitor discharge management. |
| Telecom Base Station Management | Automotive Infotainment Head Unit |
Use Scenario: Voltage sag during RF transmission bursts causing transient logic errors in control MCU. IC Role / Device Role / Timing Role: DS1708SESA supervises 3.3V domain while IN monitors 5V bias rail; dual reset outputs synchronize FPGA and MCU reset domains. Use Value: Eliminates need for discrete RC reset circuits and external watchdog ICs, reducing BOM count and board space by 30%. |
Use Scenario: Cold-cranking condition where battery voltage dips below 6V while powering 3.3V infotainment SoC. IC Role / Device Role / Timing Role: DS1708SESA's 2.93V VCC threshold and 1.25V IN input detect pre-failure conditions before SoC lockup, initiating graceful UI shutdown. Use Value: Avoids display artifacts and file system corruption by triggering NMI-initiated cache flush prior to RST assertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UT43D3+T | Single active-low reset; no NMI output; 4.3V fixed threshold; SOT23-3 package | Lacks IN sense input and early-warning interrupt; suitable only for basic VCC-only monitoring | Select when board space is critical and only VCC supervision is required without upstream sensing or NMI signaling |
| TPS3808G33DBVR | 3.3V ±2% accuracy; adjustable delay; no NMI; open-drain RST only; 5-pin SOT23 | Higher trip accuracy but no secondary sense input or interrupt capability; requires external components for pushbutton debounce | Choose when tighter VCC tolerance (±2%) is mandatory and NMI functionality is unnecessary |
Compared with MAX6326UT43D3+T and TPS3808G33DBVR, DS1708SESA uniquely integrates dual-reset polarity, dedicated IN-based early warning, and hardware pushbutton debouncing in a single SOIC-8 package-enabling robust, self-contained power supervision without external timing or logic components.
Availability
DS1708SESA is available at Aetrix Electronics and suitable for industrial PLC controllers, medical diagnostic equipment, telecom base station management, and automotive infotainment head units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DS1708SESA 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 design and manufacturing company specializing in analog, mixed-signal, and power management solutions for industrial, communications, and computing markets.
The DS1708SESA belongs to the MicroMonitor™ family of voltage supervisors, engineered specifically for fail-safe microprocessor reset control in systems demanding simultaneous local and upstream power monitoring with deterministic timing behavior.
FAQ
What is the exact VCC trip point range for DS1708SESA?
The DS1708SESA has a guaranteed VCC trip point range of 2.85V to 3.00V, with a typical value of 2.93V. This corresponds to 3.3V ±10% monitoring tolerance and is validated across the full −40°C to +85°C operating temperature range. The DS1708SESA datasheet specifies these limits under DC electrical characteristics, and the device maintains this accuracy without external calibration.
Does DS1708SESA support both active-high and active-low reset outputs simultaneously?
Yes, DS1708SESA provides two independent reset outputs: RST (active-high, open-drain) and RST (active-low, push-pull). Both assert concurrently during VCC or IN fault conditions and remain active for ≥130ms after VCC recovery. This dual-output architecture eliminates the need for external inverters or level translators in systems with mixed logic families.
How does the NMI function work in DS1708SESA, and what is its timing behavior?
The DS1708SESA generates an NMI pulse when the IN pin voltage falls below 1.25V (±50mV), with built-in 100µV hysteresis and 5µs noise immunity. The NMI output is active-low, minimum 200µs wide, and triggers before RST activation to provide early power-fail warning. DS1708SESA ensures NMI is disabled during initial power-up until VCC reaches VCCTP, preventing spurious interrupts.
Can DS1708SESA monitor a voltage higher than its VCC supply, such as a 12V rail?
Yes, DS1708SESA can monitor voltages above VCC using the IN pin with an external resistor divider. Since IN is high-impedance (<1µA leakage) and referenced to an internal 1.25V bandgap, a divider network (e.g., R1=26kΩ, R2=10kΩ) scales 12V down to 1.25V at the IN pin. DS1708SESA documentation confirms this configuration and provides the calculation formula for safe implementation.
Is DS1708SESA pin-compatible with other members of the DS1707/DS1708 family?
Yes, DS1708SESA shares identical pinout and footprint with all DS1707/DS1708 variants in SOIC-8 packaging, including DS1707ESA, DS1708ESA, and DS1708TESA. The pin assignments-PBRST, VCC, GND, IN, RST, RST, NC, NMI-are consistent across the family, enabling drop-in replacement within the same voltage tolerance and package variant.
DS1708SESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- MicroMonitor™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- Output:
- Push-Pull, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 130ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
DS1708SESA FAQ
1.How can I place an order for DS1708SESA through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1708SESA 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 DS1708SESA reliable?
The price and inventory of DS1708SESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1708SESA is usually 5 days.
3.What payment methods are accepted for DS1708SESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1708SESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1708SESA?
DS1708SESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1708SESA 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 DS1708SESA?
For technical support, including DS1708SESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1708SESA requirements.
6.How does Aetrix verify that DS1708SESA is sourced from the original manufacturer or authorized distributors?
All DS1708SESA 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 DS1708SESA meets industry standards.
7.What is the process for return or replacement of DS1708SESA?
All DS1708SESA units undergo pre-shipment inspection (PSI). If there is an issue with DS1708SESA, 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 DS1708SESA part is unused and in its original packaging.
Return procedure for DS1708SESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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