MAX6314US46D3+T Maxim Integrated Products, MAX6314US46D3+T Datasheet

MAX6314US46D3+T

Manufacturer Part Number

MAX6314US46D3+T

Description

IC RESET CIRCUIT 4.63V SOT143

Manufacturer

Maxim Integrated Products

Type

Simple Reset/Power-On Resetr

Datasheet

1.MAX6314US26D3T.pdf (8 pages)

Specifications of MAX6314US46D3+T

Number Of Voltages Monitored

Output

Bidirectional

Reset

Active Low

Reset Timeout

140 ms Minimum

Voltage - Threshold

4.63V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

SOT-143, SOT-143B, TO-253AA

Monitored Voltage

1 V to 5.5 V

Undervoltage Threshold

4.55 V

Overvoltage Threshold

4.71 V

Output Type

Active Low, Bidirectional

Manual Reset

Resettable

Watchdog

No Watchdog

Battery Backup Switching

No Backup

Power-up Reset Delay (typ)

280 ms

Supply Voltage (max)

5.5 V

Supply Voltage (min)

1 V

Supply Current (typ)

5 uA

Maximum Power Dissipation

320 mW

Maximum Operating Temperature

+ 85 C

Mounting Style

SMD/SMT

Minimum Operating Temperature

- 40 C

Power Fail Detection

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

MAX6314US46D3+TTR

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The MAX6314 low-power CMOS microprocessor (µP)

supervisory circuit is designed to monitor power

supplies in µP and digital systems. The MAX6314’s

RESET output is bidirectional, allowing it to be directly

connected to µPs with bidirectional reset inputs, such

as the 68HC11. It provides excellent circuit reliability

and low cost by eliminating external components and

adjustments. The MAX6314 also provides a debounced

manual reset input.

This device performs a single function: it asserts a reset

signal whenever the V

preset threshold or whenever manual reset is asserted.

Reset remains asserted for an internally programmed

interval (reset timeout period) after V

the reset threshold or manual reset is deasserted.

The MAX6314 comes with factory-trimmed reset

threshold voltages in 100mV increments from 2.5V

to 5V. Preset timeout periods of 1ms, 20ms, 140ms,

and 1120ms (minimum) are also available. The device

comes in a SOT143 package.

For a µP supervisor with an open-drain reset pin, see

the MAX6315 data sheet.

________________________Applications

19-1090; Rev 2; 12/05

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.

Computers

Controllers

Intelligent Instruments

Critical µP and µC Power Monitoring

Portable/Battery-Powered Equipment

**OR OTHER µC/µP WITH BIDIRECTIONAL RESET I/O PIN.

MAX6314

CIRCUITRY

Typical Operating Circuit

RESET

________________________________________________________________ Maxim Integrated Products

GND

General Description

supply voltage falls below a

LASER-

TRIMMED

RESISTORS

RESET

4.7kΩ

68HC11/Bidirectional-Compatible

has risen above

68HC11**

RESET

µP

♦ Small SOT143 Package

♦ RESET Output Simplifies Interface to

♦ Precision Factory-Set V

♦ ±1.8% Reset Threshold Accuracy at T

♦ ±2.5% Reset Threshold Accuracy Over Temp.

♦ Four Reset Timeout Periods Available:

♦ Immune to Short V

♦ 5µA Supply Current

♦ Pin-Compatible with MAX811

Ordering Information continued at end of data sheet.

†

+85°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.

MAX6314US50D1-T

MAX6314US49D1-T

MAX6314US48D1-T

MAX6314US47D1-T

MAX6314US46D1-T

MAX6314US45D1-T

The MAX6314 is available in a SOT143 package, -40°C to

The first two letters in the package top mark identify the part,

Bidirectional Reset I/Os

100mV Increments from 2.5V to 5V

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

TOP VIEW

PART

RESET

GND

†

µP Reset Circuit

Ordering Information

NOMINAL

Transients

SOT143

MAX6314

5.00

4.90

4.80

4.70

4.63

4.50

Pin Configuration

(V)

Reset Thresholds:

MIN t

(ms)

Features

= +25°C

MARK

AA_ _

AB_ _

AC_ _

AD_ _

AE_ _

AF_ _

TOP

††

Related parts for MAX6314US46D3+T

MAX6314US46D3+T Summary of contents

Page 1

... CIRCUITRY MR MAX6314 GND **OR OTHER µC/µP WITH BIDIRECTIONAL RESET I/O PIN. ________________________________________________________________ Maxim Integrated Products 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. 68HC11/Bidirectional-Compatible ♦ Small SOT143 Package ♦ RESET Output Simplifies Interface to Bidirectional Reset I/Os ♦ ...

Page 2

Reset Circuit ABSOLUTE MAXIMUM RATINGS V ........................................................................-0.3V to +6.0V CC All Other Pins..............................................-0. Input Current (V ) .............................................................20mA CC Output Current (RESET)......................................................20mA Rate of Rise (V ) ...........................................................100V/µs CC Stresses beyond those listed under “Absolute Maximum ...

Page 3

Operating Characteristics (T = +25°C, unless otherwise noted.) A PULLUP CHARACTERISTICS +5V 4.7kΩ 74HC05 100pF 74HC05 RESET 100pF MAX6314 MR GND 200ns/div SUPPLY CURRENT vs. SUPPLY VOLTAGE +85° +25°C A ...

Page 4

Reset Circuit ______________________________________________________________Pin Description PIN NAME 1 GND Ground Active-Low Complementary Output. In addition to the normal n-channel pulldown, RESET has a p-channel RESET 2 pullup transistor in parallel with a 4.7kΩ resistor to facilitate connection to µPs ...

Page 5

Detailed Description The MAX6314 has a reset output consisting of a 4.7kΩ pull-up resistor in parallel with a P-channel transistor and an N-channel pull down (Figure 1), allowing this IC to directly interface with microprocessors (µPs) that have bidirectional reset ...

Page 6

Reset Circuit V CC RESET CIRCUITRY MR MAX6314 Figure 2. MAX6314 Supports Additional Devices on the Reset Bus MR has an internal 63kΩ pullup resistor can be left open if not used. Connect a normally open ...

Page 7

V CC RESET Figure 4. RESET Timing Diagram ___________________________________________Ordering Information (continued) NOMINAL † PART V (V) TH MAX6314US44D1-T ††† 4.39 MAX6314US43D1-T 4.30 MAX6314US42D1-T 4.20 MAX6314US41D1-T 4.10 MAX6314US40D1-T 4.00 MAX6314US39D1-T 3.90 MAX6314US38D1-T 3.80 MAX6314US37D1-T 3.70 MAX6314US36D1-T 3.60 MAX6314US35D1-T 3.50 MAX6314US34D1-T 3.40 ...

Page 8

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products MIN t ...

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