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Analog Devices Inc./Maxim Integrated DS1708ESA+
- Part No.:
- DS1708ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DS1708ESA+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,078
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Product details
Overview
DS1708ESA+ from Maxim Integrated is a 5.0V ±10% microprocessor supervisory circuit that monitors VCC, senses external voltage via IN pin, and debounces pushbutton reset input (PBRST). It delivers active-low and active-high reset outputs (RST and RST), generates non-maskable interrupt (NMI) on power decay, and guarantees ≥130 ms reset pulse width. Used in industrial embedded systems requiring reliable power-up/power-down sequencing and early power-fail warning.
For engineers reviewing the DS1708ESA+ datasheet, DS1708ESA+ pinout, DS1708ESA+ application, or DS1708ESA+ equivalent, key selection criteria include its 5V-10% VCC trip point (4.25–4.50 V), dual reset outputs, NMI generation with 1.25 V IN threshold, 130 ms minimum reset timeout, and compatibility with 8-pin SOIC (150-mil) layout.
Technical Context
The DS1708ESA+ integrates three independent monitoring functions: VCC supply supervision with temperature-compensated bandgap reference, high-impedance IN pin for external voltage sensing (trip at 1.25 V ±0.05 V), and debounced PBRST input with 130 ms guaranteed reset pulse. Its dual RST outputs support both active-low and active-high reset logic simultaneously.
Reset assertion occurs when VCC falls below 4.25 V (min), and remains active for ≥130 ms after VCC returns to tolerance. NMI pulses low for ≥200 ns upon IN voltage decay to 1.25 V, with 100 µV hysteresis and 5 µs noise immunity - enabling early system shutdown before reset activation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 4.25 V to 4.50 V - triggers reset when 5.0 V supply drops beyond ±10% tolerance |
| IN Trip Voltage | 1.20 V to 1.30 V - sets external voltage sense threshold for NMI generation |
| Reset Timeout | 130 ms minimum - ensures stable power and processor initialization post-power-up |
| NMI Pulse Width | ≥200 ns - provides early warning of power decay before reset activation |
| Operating Temp | −40°C to +85°C - supports industrial-grade deployment without derating |
| Supply Current | 60 µA max at VCC < 5.5 V - enables low-power always-on monitoring |
| Package | 8-pin SOIC (150-mil) - surface-mount compatible with standard PCB assembly |
Pinout & Package
DS1708ESA+ uses an 8-pin SOIC (150-mil) package with gull-wing leads, JEDEC MS-012AC compliant. Pin 1 is marked by notch or dot; pin numbering follows standard counterclockwise orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PBRST | Pushbutton Reset Input | Active-low debounced input; initiates ≥130 ms reset pulse on release |
| VCC | Power Supply Input | Primary supply rail (1.2–5.5 V); powers internal reference and comparators |
| GND | Ground Reference | Return path for all internal circuits and output drivers |
| IN | Voltage Sense Input | High-impedance analog input for external voltage monitoring (e.g., regulated rail or upstream DC) |
| RST | Active-Low Reset Output | Open-drain output; pulls low during reset condition to halt microprocessor execution |
| RST | Active-High Reset Output | Push-pull output; drives high during reset condition for direct interface to logic inputs |
| NC | No Connect | Internally unconnected; must remain floating or tied to GND per layout guidelines |
| NMI | Non-Maskable Interrupt Output | Open-drain output; pulses low ≥200 ns when IN voltage decays to 1.25 V |
Key Features
| Feature | Design Value |
|---|---|
| Dual Reset Outputs | RST (active-low open-drain) and RST (active-high push-pull) eliminate level-shifting needs in mixed-logic systems |
| Programmable Voltage Sensing | IN pin accepts user-defined voltage divider; enables monitoring of any DC rail ≥1.25 V with 1.25 V internal reference |
| Debounced Pushbutton Interface | PBRST input includes internal 40 kΩ pull-up and timing logic to guarantee ≥130 ms reset pulse regardless of button bounce |
| Early Power-Fail Warning | NMI output activates before reset, providing ≥200 ns interrupt window for controlled data save or state preservation |
| Industrial Temperature Range | Validated operation from −40°C to +85°C ensures reliability in harsh environments without thermal compensation overhead |
Applications
| Industrial PLC Controller | Medical Diagnostic Equipment |
|---|---|
|
Use Scenario: Power sequencing and brownout recovery in programmable logic controllers operating in factory-floor environments with fluctuating AC line conditions. IC Role / Device Role / Timing Role: Supervisory IC providing VCC monitoring, external rail sensing (e.g., 24 V I/O supply), and hardware reset coordination across multiple microcontrollers. Use Value: Prevents corrupted firmware execution during voltage sags by asserting RST within 8 µs of VCC drop and holding it ≥130 ms for full stabilization. |
Use Scenario: Safe shutdown and data integrity preservation in portable ultrasound or MRI subsystems where power interruption must trigger immediate state capture. IC Role / Device Role / Timing Role: Dual-role monitor: IN pin tracks main DC-DC converter output; NMI signals power decay to host MCU 200+ ns before RST asserts. Use Value: Enables >100 µs of deterministic time between NMI and RST to flush buffers and disable high-voltage generators before hard reset. |
| Telecom Line Card | Automotive Infotainment Gateway |
|
Use Scenario: Hot-swap power management in carrier-grade line cards where backplane voltage transients require precise reset timing and fault isolation. IC Role / Device Role / Timing Role: Monitors both 3.3 V core and 5.0 V interface rails; PBRST interfaces with hot-swap controller's fault signal to initiate graceful reset. Use Value: Eliminates need for external RC timers or discrete supervisors - reduces BOM count while maintaining 130 ms reset hold time across temperature. |
Use Scenario: Power integrity assurance in head-unit ECUs exposed to automotive battery transients (load dump, cold crank). IC Role / Device Role / Timing Role: VCC monitoring at 5.0 V ±10%; IN pin senses 12 V battery rail via resistor divider to detect pre-crank voltage decay. Use Value: NMI alerts application processor 5 µs before VCC trip, allowing critical CAN messages to be queued prior to RST assertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX708ESA+ | Same 8-pin SOIC footprint; 5V ±10% VCC trip (4.25–4.50 V); identical RST/RST/NMI/PBRST functionality and timing | Pin-compatible and functionally identical; designed as direct replacement per Maxim documentation | Select MAX708ESA+ if sourcing from legacy inventory or distributor stock with identical qualification history |
| TPS3808G12DBVR | Single active-low reset output only; no RST, no NMI; 1.2 V fixed threshold for VCC monitoring only; no IN pin or PBRST support | Lacks external voltage sensing and early-warning interrupt; suitable only for basic VCC-only reset needs | Choose TPS3808G12DBVR only when dual reset outputs and NMI are unnecessary and board space is constrained |
Compared with DS1708ESA+, MAX708ESA+ offers identical electrical behavior and drop-in compatibility, while TPS3808G12DBVR reduces feature set to basic reset-only operation - making DS1708ESA+ the only option supporting simultaneous VCC monitoring, external rail sensing, and early-interrupt capability in one 8-pin SOIC device.
Availability
DS1708ESA+ is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, telecom infrastructure, and automotive infotainment gateways requiring stable component supply and long-term lifecycle support.
Supply support for DS1708ESA+ 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, communications, and computing applications.
The DS1708ESA+ belongs to the MicroMonitor™ supervisory IC family, engineered specifically for robust microprocessor reset and power-fail warning in mission-critical embedded systems operating across wide temperature ranges.
FAQ
What is the exact VCC trip point range for DS1708ESA+?
The DS1708ESA+ has a guaranteed VCC trip point range of 4.25 V to 4.50 V at −40°C to +85°C, corresponding to a nominal 5.0 V supply with ±10% tolerance. This specification is validated per Maxim's DS1707/DS1708 datasheet Rev. 0, page 7, and applies directly to the DS1708ESA+ variant. The trip point is temperature-compensated using an internal bandgap reference to maintain accuracy across the full industrial temperature range.
Does DS1708ESA+ support both active-high and active-low reset outputs?
Yes, DS1708ESA+ provides two independent reset outputs: RST (active-low, open-drain) and RST (active-high, push-pull). This dual-output architecture allows direct interfacing with microprocessors requiring either polarity without external inverters or level shifters. Both outputs assert simultaneously and maintain their states for a minimum of 130 ms after VCC returns to tolerance, ensuring reliable processor initialization.
Can DS1708ESA+ monitor a 12 V supply rail?
Yes, DS1708ESA+ can monitor a 12 V supply using the IN pin with an external resistor divider. The IN pin has a fixed 1.25 V threshold and high input impedance (>100 MΩ), so a divider such as R1 = 26 kΩ and R2 = 10 kΩ scales 12 V down to 1.25 V at the IN pin. The DS1708ESA+ datasheet Figure 5 confirms this configuration, and the maximum allowable input voltage at IN is limited to VCC - meaning the divider must ensure IN never exceeds the DS1708ESA+ VCC rail.
Is DS1708ESA+ pin-compatible with MAX708ESA+?
Yes, DS1708ESA+ is pin-compatible with MAX708ESA+ in the 8-pin SOIC (150-mil) package. Both devices share identical pin assignments (PBRST, VCC, GND, IN, RST, RST, NC, NMI), identical electrical characteristics for VCC trip (4.25–4.50 V), and matching timing parameters including 130 ms reset timeout and 200 ns NMI pulse width. Maxim explicitly documents this compatibility in the DS1707/DS1708 datasheet Feature section.
What is the minimum reset pulse width guaranteed by DS1708ESA+?
The DS1708ESA+ guarantees a minimum reset pulse width of 130 ms for both RST and RST outputs, measured from the moment VCC rises above the trip threshold until reset deassertion. This timing is specified across −40°C to +85°C and is independent of VCC slew rate. The DS1708ESA+ also enforces the same 130 ms minimum duration for pushbutton-initiated resets, ensuring consistent behavior whether triggered by power-up or manual override.
DS1708ESA+ 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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.4V
- 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
DS1708ESA+ FAQ
1.How can I place an order for DS1708ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1708ESA+ 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 DS1708ESA+ reliable?
The price and inventory of DS1708ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1708ESA+ is usually 5 days.
3.What payment methods are accepted for DS1708ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1708ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1708ESA+?
DS1708ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1708ESA+ 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 DS1708ESA+?
For technical support, including DS1708ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1708ESA+ requirements.
6.How does Aetrix verify that DS1708ESA+ is sourced from the original manufacturer or authorized distributors?
All DS1708ESA+ 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 DS1708ESA+ meets industry standards.
7.What is the process for return or replacement of DS1708ESA+?
All DS1708ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1708ESA+, 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 DS1708ESA+ part is unused and in its original packaging.
Return procedure for DS1708ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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