Analog Devices Inc./Maxim Integrated DS1707ESA

Overview

DS1707ESA from Maxim Integrated is a 5V ±5% voltage supervisor IC that monitors VCC, senses external supply voltage via IN pin, and debounces pushbutton reset input (PBRST) to generate active-low and active-high reset outputs (RST and RST). It delivers 130 ms minimum reset pulse width, non-maskable interrupt (NMI), and operates across -40°C to +85°C for industrial microprocessor power management.

For engineers reviewing the DS1707ESA datasheet, DS1707ESA pinout, DS1707ESA application, or DS1707ESA equivalent, key selection criteria include VCC trip point accuracy (4.50–4.75 V), dual reset polarity support, NMI early-warning capability, and compatibility with 8-pin SOIC layout constraints in embedded power sequencing designs.

Technical Context

The DS1707ESA implements a precision bandgap-referenced comparator architecture to monitor both local VCC (trip point 4.50–4.75 V) and remote supply voltage via high-impedance IN pin (trip point 1.25 V). Its internal hysteresis (100 µV) and noise immunity (<2 µs pulses ignored) prevent false NMI triggering during supply transients.

It integrates three independent monitoring functions: power-fail detection (generating RST/RST on VCC decay), early-warning NMI (on IN voltage drop), and hardware-debounced PBRST with guaranteed 130 ms reset assertion after button release - all synchronized without external components.

Key Specifications

Pinout & Package

DS1707ESA uses an 8-pin SOIC (150-mil) package with exposed pad not present. Pin assignments are fixed per mechanical drawing: pins 1–8 correspond to PBRST, VCC, GND, IN, RST, RST, NC, NMI respectively.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervisor applications.

Compared with MAX707ESA and TPS3808G33DBVR, DS1707ESA uniquely combines ±5% VCC trip accuracy, dual-polarity reset outputs, NMI early warning, and hardware-debounced PBRST in one 8-pin SOIC device-enabling robust, self-contained power supervision without layout or firmware modifications.

Availability

DS1707ESA is available at Aetrix Electronics and suitable for industrial PLC controllers, medical diagnostic equipment, telecom base station shelves, and automotive infotainment head units requiring stable component supply and long-term lifecycle assurance.

Supply support for DS1707ESA 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, computing, and communications markets.

The DS1707ESA belongs to the MicroMonitor family of voltage supervisors engineered for deterministic power-fail response, early-warning interrupt generation, and pushbutton reset control in microprocessor-based systems.

FAQ

What is the VCC trip point range for DS1707ESA?

The DS1707ESA has a specified VCC trip point range of 4.50 V to 4.75 V, corresponding to a nominal 5V supply with ±5% tolerance. This range ensures reliable reset activation when the monitored 5V rail falls outside acceptable limits. The DS1707ESA's trip point is factory-trimmed and temperature-compensated, maintaining accuracy across the full -40°C to +85°C operating range without external calibration.

Does DS1707ESA support both active-low and active-high reset outputs?

Yes, DS1707ESA provides two independent reset outputs: RST (active-low, open-drain) and RST (active-high, push-pull). This dual-output architecture eliminates the need for external level-shifting or inversion circuitry in systems using mixed logic families. The DS1707ESA asserts both outputs synchronously during power failure, PBRST activation, or VCC decay below the trip threshold.

How does the NMI function work in DS1707ESA?

The NMI output in DS1707ESA generates a ≥200 µs low pulse when the voltage at the IN pin falls below its 1.25 V trip point, providing early warning of upstream supply degradation. The DS1707ESA incorporates 100 µV hysteresis and ignores noise spikes shorter than 2 µs, ensuring robust operation in electrically noisy environments. This feature enables firmware-initiated safe shutdown before VCC collapse triggers hard reset.

Can DS1707ESA monitor voltages other than 5V?

Yes, DS1707ESA can monitor any DC voltage via its high-impedance IN pin, which trips at 1.25 V. By using an external resistor divider, users can scale higher voltages (e.g., 12V, 24V) down to the IN pin's trip threshold. The DS1707ESA's design allows monitoring of 3.3V, 5V, or higher rails without modifying the IC itself - only the external divider values change based on the target supply voltage.

Is DS1707ESA pin-compatible with MAX707/MAX708?

Yes, DS1707ESA is pin-compatible with MAX707 and MAX708 in the 8-pin SOIC package. All signal pins - PBRST, VCC, GND, IN, RST, RST, NC, and NMI - occupy identical positions. This allows direct substitution in existing layouts designed for MAX707/MAX708, preserving PCB footprint and interconnect while upgrading to DS1707ESA's tighter ±5% trip tolerance and enhanced noise immunity.