ISL88021IU8FCZ-TK Intersil, ISL88021IU8FCZ-TK Datasheet

ISL88021IU8FCZ-TK

Manufacturer Part Number

ISL88021IU8FCZ-TK

Description

IC VOLTAGE MON TRIPLE UV 8-MSOP

Manufacturer

Intersil

Type

Multi-Voltage Supervisorr

Datasheet

1.ISL88021IU8FAZ-TK.pdf (7 pages)

Specifications of ISL88021IU8FCZ-TK

Number Of Voltages Monitored

Output

Open Drain, Push-Pull

Reset

Active High/Active Low

Reset Timeout

140 ms Minimum

Voltage - Threshold

2.332V, 3.085V, Adj

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

8-MSOP, Micro8™, 8-uMAX, 8-uSOP,

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

ISL88021IU8FCZ-TKTR

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ISL88021IU8FCZ-TK

Manufacturer:

INTEL10

Quantity:

100

Current page: 1 of 7
Download datasheet (190Kb)

Triple Voltage Monitor with Adjustable

Power-On-Reset and Undervoltage/

Overvoltage Monitoring Capability

The ISL88021 and ISL88022 family of devices are

customizable triple voltage-monitoring supervisors that

assert a reset if any of the monitored voltages becomes

non-compliant. They offer popular functions such as

Power-On-Reset timing control with both RESET and

RESET outputs, Supply Voltage Supervision, both under or

overvoltage detection, and Manual Reset assertion. By

offering these features in a small 8 Ld MSOP package, the

ISL88021 and ISL88022 can lower system cost, reduce

board space requirements and increase the reliability of

systems.

Applying a voltage to V

circuit which holds RESET low for an adjustable period of

time. This allows the power supply and system oscillator to

stabilize before the processor can execute code.

Low V

low voltage conditions, resetting the system when V

below its minimum preset voltage threshold V

remains asserted until V

level and stabilizes. Two additional voltage monitoring

inputs, V2MON (preset) and V3MON (adjustable), monitor

other supplies to provide reliable system operation.

The ISL88021 V3MON input monitors for undervoltage (UV)

conditions whereas the ISL88022 V3MON input allows

monitoring for overvoltage (OV) conditions. The monitored

voltage on V3MON on either device is compared via a

resistor divider to a 600mV internal reference. Hence, any

voltage more or less positive than this reference can be

accurately monitored to meet specific system level

requirements or to fine-tune the threshold for applications

requiring higher precision.

These devices also let users increase the Power-On-Reset

time-out delay by connecting a capacitor between C

ground. This lengthens the period of an internal clock

counter thereby increasing the time between voltage

compliance and reset outputs signaling.

A manual reset input provides debounce circuitry for

minimum reset component count.

detection circuitry protects the user’s system from

activates the Power-On-Reset

returns to its proper operating

Data Sheet

TH1

. Reset

POR

1-888-INTERSIL or 1-888-468-3774

falls

and

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Features

• Triple Voltage Monitor and Reset Assertion

• Low V

• 140ms Minimum Reset Pulse Delay that is Customizable

• Both RST and RST Outputs Available

• Undervoltage/Overvoltage Monitoring Capability

• Low 20µA Consumption

• Small 8 Ld MSOP Package

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• Process Control Systems

• Intelligent Instruments

• Embedded Control Systems

• Computer Systems

• Portable/Battery-Powered Equipment

• Multi-Voltage Systems

Pinout

September 18, 2006

- Adjustable Reset Threshold Voltages

- 0.6V ±6mV Over -40°C to +85°C

- Reset Signal Valid to V

Using an External Capacitor

All other trademarks mentioned are the property of their respective owners.

Detection and Reset Assertion

Intersil (and design) is a registered trademark of Intersil Americas Inc.

V2MON

GND

ISL88021, ISL88022

(8 LD MSOP)

TOP VIEW

= 1V

RST

V3MON

POR

FN8226.1

Related parts for ISL88021IU8FCZ-TK

ISL88021IU8FCZ-TK Summary of contents

Page 1

... V2MON and POR GND CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 1-888-468-3774 Intersil (and design registered trademark of Intersil Americas Inc. All other trademarks mentioned are the property of their respective owners. ISL88021, ISL88022 FN8226 ISL88021, ISL88022 (8 LD MSOP) ...

Page 2

... Ordering Information (See Notes) PART PART V V2MO DD NUMBER MARKING V V TRIP1 TRIP2 ISL88021IU8FAZ ANM 3.09V 1.69V ISL88021IU8FCZ ANL 3.09V 2.32V ISL88021IU8FEZ 3.09V 2.92V ISL88021IU8FFZ 3.09V 3.09V ISL88021IU8HAZ 4.64V 1.69V ISL88021IU8HCZ 4.64V 2.32V ISL88021IU8HEZ ANK 4.64V 2.92V ISL88021IU8HFZ ANJ 4.64V 3.09V ISL88022IU8FAZ ANQ 3 ...

Page 3

Absolute Maximum Ratings Temperature Under Bias . . . . . . . . . . . . . . . . . . . . - +85 C Voltage on Any Pin with Respect to GND . ...

Page 4

Electrical Specifications Over the recommended operating conditions unless otherwise specified. (Continued) SYMBOL PARAMETER MANUAL RESET V MR Input Voltage Low MRL V MR Input Voltage High MRH t MR Minimum Pulse Width MR R Internal Pull-Up Resistor PU Functional Description ...

Page 5

Manual Reset The manual reset input (MR) allows the user to trigger a reset by using a push-button switch or by signaling that pin low. The MR input is an active low debounced input. By connecting a push-button directly from ...

Page 6

RISING EDGE 100ms/DIV ISL88022 t = 150ms POR C = OPEN POR ISL88021 t C POR FIGURE 6. ISL88021_22EVAL1 t POR Operational Timing Diagrams V TH1 V2MON or V3MON (ISL88021 POR RST RST 6 ...

Page 7

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

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