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Analog Devices Inc./Maxim Integrated DS1707EPA+
- Part No.:
- DS1707EPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
DS1707EPA+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:150
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Product details
Overview
DS1707EPA+ from Maxim Integrated is a 5V ±5% microprocessor supervisory circuit that monitors VCC, senses external voltage via IN pin, and debounces pushbutton reset input. It delivers active-low and active-high reset outputs (RST and RST), non-maskable interrupt (NMI), and operates across -40°C to +85°C in 8-pin DIP package. Used in embedded systems requiring reliable power-up sequencing and early power-fail warning.
For engineers reviewing the DS1707EPA+ datasheet, DS1707EPA+ pinout, DS1707EPA+ application, or DS1707EPA+ equivalent, key selection criteria include VCC trip point accuracy (4.50–4.75 V), guaranteed 130 ms minimum reset pulse width, NMI timing (200 µs pulse, 5 µs noise immunity), and compatibility with 3.3V/5V microcontroller supply rails.
Technical Context
The DS1707EPA+ integrates three independent monitoring functions: VCC threshold detection using an internal bandgap reference, high-impedance voltage sense at IN pin (trip point 1.25 V ±50 mV), and debounced PBRST input with 130 ms minimum active reset assertion. All logic outputs are fully specified for operation down to VCC = 1.2 V.
Its dual-reset architecture provides simultaneous /RST (active-low) and RST (active-high) signals synchronized to VCC decay or recovery, while NMI generation occurs earlier during supply droop-enabling controlled system shutdown before reset activation. Hysteresis on IN and VCC comparators prevents false triggering from noise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 4.50–4.75 V; ensures reset activation before 5V microprocessor enters undefined operating region |
| Reset Pulse Width | 130–285 ms; guarantees sufficient time for power supply and CPU stabilization after power-up or recovery |
| NMI Pulse Width | ≥200 µs; provides deterministic early-warning signal for firmware-initiated graceful shutdown |
| IN Pin Trip Voltage | 1.20–1.30 V; enables flexible external voltage monitoring via resistor divider with known reference |
| Supply Current | 60 µA max at VCC < 5.5 V; supports low-power always-on supervision in battery-backed systems |
| Operating Temp | -40°C to +85°C; qualified for industrial-grade embedded control and instrumentation applications |
Pinout & Package
DS1707EPA+ is housed in an 8-pin plastic DIP (300-mil) package with through-hole mounting. Pin assignments are standardized per Maxim's mechanical drawings for DS1707/DS1708 family.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PBRST | Pushbutton Reset Input | Active-low debounced input; initiates 130 ms minimum reset pulse on release |
| VCC | Power Supply Input | Primary supply rail monitored; powers internal reference, comparator, and output drivers |
| GND | Ground Reference | Common return path for all analog and digital circuitry; must be low-impedance |
| IN | Voltage Sense Input | High-impedance comparator input referenced to 1.25 V; used for external supply monitoring |
| RST | Active-Low Reset Output | Open-drain output; requires external pull-up; asserts low during fault or power-up |
| RST | Active-High Reset Output | Push-pull output; drives high during fault or power-up; complements /RST timing |
| NC | No Connect | Unbonded die pad; must remain unconnected on PCB |
| NMI | Non-Maskable Interrupt Output | Open-drain output; pulses low ≥200 µs upon IN or VCC undervoltage detection |
Key Features
| Feature | Design Value |
|---|---|
| Dual Reset Outputs | /RST (open-drain) and RST (push-pull) provide interface flexibility with diverse MCU reset architectures |
| Programmable Voltage Monitoring | IN pin accepts user-defined trip point via resistor divider; supports monitoring of 3.3V, 5V, or higher supplies |
| Debounced Pushbutton Interface | Internal 40 kΩ pull-up and timing logic eliminate need for external RC debounce network |
| Early Power-Fail Warning | NMI output triggers before reset activation, enabling firmware-controlled data save and safe state transition |
| Industrial Temperature Range | Validated operation from -40°C to +85°C ensures reliability in harsh environments without derating |
Applications
| Industrial PLC Controller | Medical Diagnostic Equipment |
|---|---|
Use Scenario: Continuous operation in factory-floor automation where unexpected brownouts risk corrupted I/O states. IC Role / Device Role / Timing Role: Supervisory IC providing VCC monitoring, NMI-based shutdown prep, and synchronized dual-reset assertion. Use Value: Prevents firmware crash and EEPROM corruption by guaranteeing 130 ms reset hold time and enabling 200 µs advance warning via NMI. |
Use Scenario: Portable imaging device with battery backup requiring fail-safe boot and runtime voltage supervision. IC Role / Device Role / Timing Role: Primary power supervisor managing 5V main rail and 3.3V logic rail via IN-sense divider. Use Value: Enables deterministic power-cycle recovery and preserves patient data integrity through precise 4.50–4.75 V trip window and low ICC (60 µA). |
| Telecom Base Station Shelf | Automotive Infotainment Head Unit |
Use Scenario: Multi-board chassis with distributed 5V supplies where localized undervoltage must trigger board-level reset. IC Role / Device Role / Timing Role: Local supervisor detecting upstream 5V rail collapse and asserting /RST to isolate faulty module. Use Value: Eliminates need for discrete comparator + timer circuits; reduces BOM count and improves timing consistency vs. discrete solutions. |
Use Scenario: In-vehicle infotainment unit exposed to load-dump and cold-crank transients. IC Role / Device Role / Timing Role: Resets application processor and FPGA upon VCC dip below 4.50 V; uses NMI to log fault before reset. Use Value: Meets AEC-Q100 stress requirements via -40°C to +85°C qualification and robust 5 µs noise immunity on IN/VCC inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX707CPA+ | Same pinout, identical 5V ±5% VCC trip (4.50–4.75 V), but lacks IN pin voltage sense capability | Cannot monitor external supply rails; limited to VCC-only supervision | Select when only primary supply monitoring is required and board space allows omission of external sense divider |
| TPS3808G33DBVR | 3.3V fixed trip, open-drain /RESET only, no NMI or dual-reset outputs; 350 nA quiescent current | Designed for ultra-low-power 3.3V systems; no provision for pushbutton reset or external voltage sensing | Select for battery-powered 3.3V applications where NMI and PBRST are unnecessary and sub-µA ICC is critical |
Compared with MAX707CPA+, DS1707EPA+ adds IN-based external voltage monitoring and NMI signaling; compared with TPS3808G33DBVR, it supports 5V systems, dual-reset outputs, and pushbutton interface-making DS1707EPA+ optimal for industrial 5V designs needing full-featured supervision.
Availability
DS1707EPA+ is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, telecom infrastructure, and automotive infotainment head units requiring stable component supply and long-term lifecycle support.
Supply support for DS1707EPA+ 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 DS1707EPA+ belongs to the MicroMonitor™ family-engineered specifically for robust microprocessor supervision in mission-critical embedded systems demanding accurate voltage thresholds, noise-immune timing, and fail-safe reset behavior.
FAQ
What is the exact VCC trip point range for DS1707EPA+?
The DS1707EPA+ has a guaranteed VCC trip point of 4.50 V minimum to 4.75 V maximum at -40°C to +85°C. This ±5% tolerance around 4.65 V nominal ensures reliable reset activation before a 5V microprocessor exits its valid operating range. The DS1707EPA+ datasheet specifies this range under DC Electrical Characteristics, and it is validated across temperature and process corners.
Does DS1707EPA+ support monitoring of voltages other than VCC?
Yes, DS1707EPA+ supports external voltage monitoring via its IN pin, which triggers NMI when the sensed voltage falls below 1.20–1.30 V. Using an external resistor divider, designers can scale higher supply rails (e.g., 12V, 24V) to meet this threshold-enabling early detection of upstream power faults before VCC drops. This function is fully documented in the DS1707EPA+ application schematics and timing diagrams.
How does the pushbutton reset function work on DS1707EPA+?
The DS1707EPA+ PBRST pin accepts an active-low signal, internally debounces it, and generates a guaranteed minimum 130 ms reset pulse on both RST and /RST outputs upon button release. An internal 40 kΩ pull-up eliminates external components. This behavior is confirmed in the DS1707EPA+ timing diagram Figure 4 and operational description under "Pushbutton Reset" section.
Is DS1707EPA+ pin-compatible with other members of the DS1707/DS1708 family?
Yes, DS1707EPA+ shares identical 8-pin DIP pinout with DS1707ESA+, DS1708EPA+, DS1708REPA+, and all other DS1707/DS1708 variants in DIP, SOIC, and µSOP packages. Pin functions-including dual RST outputs, NMI, IN, and PBRST-are consistent across the family, enabling layout reuse when migrating between voltage/tolerance options.
What is the purpose of the NMI output on DS1707EPA+?
The NMI output on DS1707EPA+ provides a non-maskable interrupt signal that activates ≥200 µs before RST/RST assertion during VCC or IN undervoltage events. This gives firmware time to execute critical tasks-such as saving volatile data or entering safe mode-before hard reset. Its 5 µs noise immunity and built-in hysteresis prevent spurious triggers, as verified in DS1707EPA+ AC Electrical Characteristics Table.
DS1707EPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- MicroMonitor™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.65V
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
DS1707EPA+ FAQ
1.How can I place an order for DS1707EPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1707EPA+ 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 DS1707EPA+ reliable?
The price and inventory of DS1707EPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1707EPA+ is usually 5 days.
3.What payment methods are accepted for DS1707EPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1707EPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1707EPA+?
DS1707EPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1707EPA+ 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 DS1707EPA+?
For technical support, including DS1707EPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1707EPA+ requirements.
6.How does Aetrix verify that DS1707EPA+ is sourced from the original manufacturer or authorized distributors?
All DS1707EPA+ 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 DS1707EPA+ meets industry standards.
7.What is the process for return or replacement of DS1707EPA+?
All DS1707EPA+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1707EPA+, 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 DS1707EPA+ part is unused and in its original packaging.
Return procedure for DS1707EPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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