________________General Description

The MAX6315 low-power CMOS microprocessor (µP)

supervisory circuit is designed to monitor power sup-

plies in µP and digital systems. It provides excellent cir-

cuit reliability and low cost by eliminating external

components and adjustments. The MAX6315 also pro-

vides a debounced manual reset input.

This device performs a single function: it asserts a reset

preset threshold or whenever manual reset is asserted.

Reset remains asserted for an internally programmed

the reset threshold or manual reset is deasserted. The

MAX6315’s open-drain RESET output can be pulled up

The MAX6315 comes with factory-trimmed reset thresh-

old voltages in 100mV increments from 2.5V to 5V.

Preset timeout periods of 1ms, 20ms, 140ms, and

1120ms (min) are also available. The device comes in a

SOT143 package.

For microcontrollers (µCs) and µPs with bidirectional

reset pins, see the MAX6314 data sheet.

________________________Applications

Computers

Controllers

Intelligent Instruments

Critical µP and µC Power Monitoring

Portable/Battery-Powered Equipment

____________________________Features

♦ Small SOT143 Package

100mV Increments from 2.5V to 5V

♦ Four Reset Timeout Periods Available:

1ms, 20ms, 140ms, or 1120ms (minimum)

♦ 5µA Supply Current

♦ Pin-Compatible with MAX811

♦ Guaranteed Over Temperature

Open-Drain SOT µP Reset Circuit

________________________________________________________________ Maxim Integrated Products

1

1

2

4

3

MR

RESET

GND

MAX6315

SOT143

TOP VIEW

Pin Configuration

MAX6315

GND

RESET

µP

RESET

MR

LASER-

TRIMMED

RESISTORS

RESET

CIRCUITRY

__________Typical Operating Circuit

19-2000; Rev 3; 12/05

Ordering Information continued at end of data sheet.

For pricing delivery, and ordering information please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

NOMINAL

(ms)

TOP

MAX6315US50D1-T

5.00

1

FX_ _

______________Ordering Information

+125°C temperature range.

while the remaining two letters are the lot tracking code.

Devices are available in both leaded and lead-free packaging.

Specify lead-free by replacing “-T” with “+T” when ordering.

Note: All devices available in tape-and-reel only. Contact fac-

tory for availability.