DS1812R-5+T&R Maxim Integrated Products, DS1812R-5+T&R Datasheet

DS1812R-5+T&R

Manufacturer Part Number

DS1812R-5+T&R

Description

IC ECONORESET 5V P-P 5% SOT23-3

Manufacturer

Maxim Integrated Products

Series

EconoResetr

Type

Simple Reset/Power-On Resetr

Datasheet

1.DS1812-10TR.pdf (5 pages)

Specifications of DS1812R-5+T&R

Number Of Voltages Monitored

Output

Push-Pull, Totem Pole

Reset

Active High

Reset Timeout

100 ms Minimum

Voltage - Threshold

4.62V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

SOT-23-3, TO-236-3, Micro3™, SSD3, SST3

Monitored Voltage

0 V to 5.5 V

Undervoltage Threshold

4.5 V

Overvoltage Threshold

4.75 V

Output Type

Active High, Push-Pull

Manual Reset

Not Resettable

Watchdog

No Watchdog

Battery Backup Switching

No Backup

Power-up Reset Delay (typ)

300 ms

Supply Voltage (max)

5.5 V

Supply Voltage (min)

0 V

Supply Current (typ)

40 uA

Maximum Operating Temperature

+ 85 C

Mounting Style

SMD/SMT

Minimum Operating Temperature

- 40 C

Power Fail Detection

Yes

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

DS1812R-5+T&R
DS1812R-5+T&RTR

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FEATURES

§ Automatically restarts a microprocessor after

§ Maintains reset for 150 ms after V

§ Reduces need for discrete components

§ Precision temperature-compensated voltage

§ Low-cost TO-92, or space saving surface

§ Push-pull active high output

§ Operating temperature -40°C to +85°C

DESCRIPTION

The DS1812 EconoReset uses a precision temperature reference and comparator circuit to monitor the

status of the power supply (V

signal is generated which forces reset to the active state. When V

the reset signal is kept in the active state for approximately 150 ms to allow the power supply and

processor to stabilize.

www.maxim-ic.com

power failure

to an in-tolerance condition

reference and voltage sensor

mount SOT-23 packages available

). When an out-of-tolerance condition is detected, an internal power-fail

returns

1 of 5

PIN ASSIGNMENT

PIN DESCRIPTION

TO-92

SOT-23

TO-92 PACKAGE

Drawings Section

BOTTOM VIEW

On Website

See Mech.

RST

GND

RST

GND

DALLAS

1 2 3

DS1812

Econo

Reset

5V EconoReset with Active

returns to an in-tolerance condition,

Active High Reset Output

Power Supply

Ground

Active High Reset Output

Power Supply

Ground

High Push-Pull Output

SOT-23 PACKAGE

Drawings Section

TOP VIEW

On Website

See Mech.

DS1812

041002

Related parts for DS1812R-5+T&R

DS1812R-5+T&R Summary of contents

Page 1

FEATURES § Automatically restarts a microprocessor after power failure § Maintains reset for 150 ms after in-tolerance condition § Reduces need for discrete components § Precision temperature-compensated voltage reference and voltage sensor § Low-cost TO-92, or ...

Page 2

OPERATION - POWER MONITOR The DS1812 provides the function of detecting out-of-tolerance power supply conditions and warning a processor-based system of impending power failure. When V signal is asserted. On power-up, RST is kept active for approximately 150 ms after ...

Page 3

TIMING DIAGRAM: POWER-UP Figure 3 TIMING DIAGRAM: POWER-DOWN Figure DS1812 ...

Page 4

ABSOLUTE MAXIMUM RATINGS* Voltage on V Pin Relative to Ground CC Voltage on RST Relative to Ground Operating Temperature Storage Temperature Soldering Temperature * This is a stress rating only and functional operation of the device at these or any ...

Page 5

NOTES: 1. All voltages are referenced to ground. ³ 2.7 volts. 2. Measured with Measured with RST output open ms PART MARKING CODES “A”, “B”, &“C” represent the device type. 810 - ...

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