imp812teus-t A1 PROs co., Ltd., imp812teus-t Datasheet

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imp812teus-t

Manufacturer Part Number
imp812teus-t
Description
4-pin ? P Volt Ag E Super Visor Wit H Manual R Eset
Manufacturer
A1 PROs co., Ltd.
Datasheet
1.IMP812TEUS-T.pdf (8 pages)

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Meier Automation Equipment Co., Limited Meier Automation Equipment Co., Limited
Part Number:
IMP812TEUS-T
Manufacturer:
IMP
Quantity:
20 000
The IMP811/IMP812 are low-power supervisors designed to monitor
voltage levels of 3.0V, 3.3V and 5.0V power supplies in low-power
microprocessor (µP), microcontroller (µC) and digital systems. Each fea-
tures a debounced manual reset input. The IMP811/812 are improved
drop-in replacements for the Maxim MAX811/812 with extended
temperature specifications to 105°C.
A reset signal is issued if the power supply voltage drops below a preset
threshold and is asserted for at least 140ms after the supply has risen
above the reset threshold. The IMP811 has an active-low output RESET
that is guaranteed to be in the correct state for V
IMP812 has an active-high output RESET. The reset comparator is
designed to ignore fast transients on V
Low power consumption makes the IMP811/IMP812 ideal for use in
portable and battery-operated equipment. Available in a compact 4-pin
SOT143 package, the devices use minimal board space.
Six voltage thresholds are available to support 3V to 5V systems:
4-Pin
wit
IMP, Inc.
4-Pin
wit
P
Block Diagrams
Manual
OWER
Reset
h Manual R
h Manual R
V CC
M
µ
µ
ANAGEMENT
P V
P V
MR
(IMP812)
IMP811
Suffix
V CC
GND
(RESET)
olt
olt
M
Reset Threshold
R
L
T
S
RESET
J
ag
ag
eset
eset
e Super
CC
e Super
Voltage (V)
.
4.63
4.38
4.00
3.08
2.93
2.63
CC
RESET
Input
down to 1.1V. The
visor
visor
C or P
GND
V CC
San Jose, CA
811/12_01.eps
IMP8
IMP8
Computers and controllers
Embedded controllers
Battery operated systems
Intelligent instruments
Wireless communication systems
PDAs and handheld equipment
Improved Maxim MAX811/MAX812 replacement
— Specified to 105°C
— New 4.0V threshold option
6 A supply current
Monitor 5V, 3.3V and 3V supplies
Manual reset input
140ms min. reset pulse width
Guaranteed over temperature
Active-LOW reset valid with 1.1V supply
(IMP811)
Small 4-pin SOT-143 package
No external components
Power-supply transient-immune design
1
1
1
1
, IMP8
, IMP8
Key Features
408-432-9100/www.impweb.com
Applications
1
1
2
2

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imp812teus-t Summary of contents

Page 1

P M OWER ANAGEMENT 4-Pin µ olt ag e Super 4-Pin µ olt ag e Super wit h Manual R eset wit h Manual R eset The IMP811/IMP812 are low-power supervisors designed to monitor voltage levels ...

Page 2

... IMP811SEUS-T IMP811REUS-T IMP812 Active HIGH Reset with Active LOW Manual Reset IMP812LEUS-T IMP812MEUS-T IMP812JEUS-T IMP812TEUS-T IMP812SEUS-T IMP812REUS-T Notes: 1. Tape and Reel packaging is indicated by the -T designation. 2. Devices may also be marked with full part number: 811L, 812M etc. XX refers to lot. Absolute Maximum Ratings ...

Page 3

Unless otherwise noted V is over the full voltage range Typical values 25° for L/M/J devices Parameter Symbol Conditions Input Voltage (V ) Range V CC Supply Current (Unloaded) ...

Page 4

Pin Descriptions Pin Number Name 1 GND 2 RESET (IMP811) 2 RESET (IMP812 Related Products Max. Supply Current Package Pins Manual RESET input Package Type Active-HIGH RESET output Active-LOW RESET output 4 Function Ground RESET ...

Page 5

Reset Timing and Manual Reset (MR) The reset signal is asserted–LOW for the IMP811 and HIGH for the IMP812 – when the V signal falls below the threshold trip CC voltage and remains asserted for 140ms minimum after the V ...

Page 6

Application Information RESET Output Operation In µP/µC systems it is important to have the processor begin operation from a known state or be able to return the system to a known state. A RESET output to a processor is provided ...

Page 7

Bi-directional Reset Pin Interfacing The IMP811/812 can interface with µP/µC bi-directional reset pins by connecting a 4.7kΩ resistor in series with the IMP809/810 reset output and the µP/µC bi-directional reset pin. Power Supply Plastic SOT-143 (4-Pin ...

Page 8

IMP, Inc. Corporate Headquarters 2830 N. First Street San Jose, CA 95134-2071 Tel: 408-432-9100 Tel: 800-438-3722 Fax: 408-434-0335 Fax-on-Demand: 1-800-249-1614 (USA) Fax-on-Demand: 1-303-575-6156 (International) e-mail: info@impinc.com http://www.impweb.com The IMP logo is a registered trademark of IMP, Inc. All other company ...

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