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MAX691ACSE

Name: MAX691ACSE
Rating: 4.7 (12 reviews)

IC SUPERVISOR 1 CHANNEL 16SOIC

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規格

Part Status	Obsolete
DigiKey Programmable	Not Verified
Type	Battery Backup Circuit
Number of Voltages Monitored	1
Voltage - Threshold	4.65V
Output	Push-Pull, Push-Pull
Reset	Active High/Active Low
Reset Timeout	140ms Minimum
Operating Temperature	0°C ~ 70°C (TA)
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package	16-SOIC
Base Product Number	MAX691

概述

Description

Max691ACSE is a microprocessor supervisory circuit from Maxim Integrated. It combines a voltage monitor, watchdog timer, and reset logic to protect microcontrollers. The device watches the supply and requires the MCU to toggle a watchdog input; if the supply voltage is too low or the watchdog times out, the reset output is asserted, forcing the MCU to restart in a known state during power-up or fault conditions. It also provides an optional manual reset input and an active-low reset output. The MAX691A family uses fixed voltage thresholds (per variant) and offers features like a controlled power-on reset delay and low quiescent current. The ACSE suffix indicates the package/temperature/lead-free options (check the datasheet for exact details). Typical applications include embedded controllers in consumer electronics, automotive, and industrial systems requiring reliable startup and fault recovery. For exact electrical specs (thresholds, timing, and pinout), consult the MAX691ACSE datasheet.

Features

Key features of MAX691ACSE (typical for the MAX691 family):
- Microprocessor supervisory circuit with watchdog timer
- Power-on reset generator to hold MCU in reset during Vcc ramp
- Manual reset input
- Reset output (usually active-low, open-drain, CMOS/TTL compatible)
- Watchdog input requires periodic heartbeat; expires if not retriggered
- Timing adjustable via external components (watchdog/preset delays)
- Low quiescent current
- 8-pin package (SOP/SOIC variants)
- Supply voltage range and exact timings vary by variant (check datasheet for MAX691ACSE)
Note: Exact voltages, timing ranges, and temperature grades depend on the specific revision/grade. Refer to the MAX691ACSE datasheet for precise specs.

Package

MAX691ACSE is in an 8-pin SOIC (Small-Outline) package; Pb-free/RoHS-compliant variant.

Pinout

- Pin count: 8 pins (8-pin package, e.g., SO-8/DIP-8).
- Function: Microprocessor supervisory/reset IC with a watchdog timer; monitors the supply voltage and generates a reset signal to a microcontroller on power-up/power-down or when the watchdog times out (includes optional/manual reset features).

Manufacturer

- Manufacturer: Maxim Integrated (Maxim Integrated Products, Inc.)
- What kind of company: An American semiconductor company that designs and manufactures analog and mixed-signal integrated circuits; it is now a part of Analog Devices, Inc. (ADI).

Application

Application areas of MAX691ACSE:
- Microprocessor/microcontroller reset supervision and watchdog timer for embedded systems
- Battery-powered/portable electronics
- Automotive and industrial controllers
- Power-supply monitoring and system health diagnostics
- Data acquisition and instrumentation systems