83C308 Unisonic Technologies, 83C308 Datasheet

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83C308

Manufacturer Part Number
83C308
Description
4-pin ?p Voltage Monitors With Manual Reset Input
Manufacturer
Unisonic Technologies
Datasheet
83CXXX
4-PIN µP VOLTAGE MONITORS
WITH MANUAL RESET INPUT
an active-low RESET and push-pull outputs. The circuit can assert
a reset signal as long as the V
below a preset threshold and it keep the reset signal for at least
140ms when V
threshold can be operated with multi-supply voltages.
low cost through eliminating external components and adjustments
when applied with +5V, +3.3V, +3.0V power supply The UTC
83CXXX also provide a de-bounced manual reset input.
V
while V
intelligent instruments, controllers, critical microprocessor and
microcomputer
equipment, automotive.
* +3V, +3.3V, and +5V power-supply voltages
* Full temperature rated
* Supply current: 5µA
* Available in configuration: push-pull RESET output
* 140ms minimum power-on reset pulse width
* Guaranteed reset to V
* Power supply transient Immunity
* Eliminating external components
* Manual reset input
* Halogen Free
www.unisonic.com.tw
Copyright © 2009 Unisonic Technologies Co., Ltd
Note: XXX: Output Voltage, refer to Marking Information.
CC
, and the outputs are guaranteed to be in the right logic state
The UTC 83CXXX is a microprocessor supervisory circuit. It has
The UTC 83CXXX provides the circuit with perfect reliability and
The reset comparator can work despite of fast transients on
In applications, the UTC 83CXXX is suitable for computers,
DESCRIPTION
FEATURES
ORDERING INFORMATION
83CXXXG-AD4-R
CC
83CXXXG-AD4- R
is down to 1V.
Ordering Number
CC
power
UNISONIC TECHNOLOGIES CO., LTD
has risen above the reset threshold. The reset
CC
monitors,
= +1V
(1) Packing Type
(2) Package Type
(3) Halogen Free
(4) Output Voltage Code
CC
power supplies voltage dropping
portable
Preliminary
or
battery-powered
SOT-143
Package
(1) R: Tape Reel
(2) AD4: SOT-143
(3) G: Halogen Free
(4) XXX: Refer to Marking Information
Tape Reel
Packing
QW-R502-353.a
CMOS IC
1 of 6

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83C308 Summary of contents

Page 1

... Ordering Number 83CXXXG-AD4- R Note: XXX: Output Voltage, refer to Marking Information. 83CXXXG-AD4-R (1) Packing Type (2) Package Type (3) Halogen Free (4) Output Voltage Code www.unisonic.com.tw Copyright © 2009 Unisonic Technologies Co., Ltd Preliminary power supplies voltage dropping portable or battery-powered Package SOT-143 (1) R: Tape Reel (2) AD4: SOT-143 ...

Page 2

... MR input has an internal 20kΩ pull-up resistor. It can be driven from a TTL or CMOS-logic line, or shorted to ground with a switch. Leave open if unused Supply voltage (+5V, +3.3V, +3.0V) CC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw Preliminary MARKING DESCRIPTION is below the reset threshold, and for at least CC rises above the reset threshold. ...

Page 3

... High MR Pull-up Resistance Reset Threshold Tempco V to Reset Delay CC Reset Active Timeout Period MR Minima Pulse Width MR Glitch Immunity (Note ) MR to Reset Propagation Delay 83C308 (3.08V) (V =3.3V) CC PARAMETER V Range CC MR Input Threshold Reset Threshold Supply Current Low RESET Output Current ...

Page 4

... Connecting a normally open momentary switch from MR to ground to create a manual-reset function, and external debounce circuitry is not required. Figure 1. RESET Valid to V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw Preliminary has risen over the reset threshold, the devices keep the signal for at least ...

Page 5

... If using ICs rated at only the nominal supply ±5%, this leaves an uncertainty zone where the supply is between 5% and 10% low and where the reset may or may not be asserted. The UTC 83C308 with high accuracy ensure that the reset is asserted closely to 5% limit and long before the supply has declined to 10% below nominal. ...

Page 6

... Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw Preliminary V ...

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