1

®

FN6655.1

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

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ISL88042

Quadruple Voltage Monitor

The ISL88042 is a Quadruple voltage-monitoring supervisor

combining competitive reset threshold accuracy and low

power consumption. This device combines popular functions

such as Power-On Reset, Undervoltage Supply Supervision,

reset signaling and Manual Reset. Monitoring four different

supplies in a 8 Ld 2x3 TDFN package, the ISL88042 devices

can help to lower system cost, reduce board space

requirements, and increase the reliability of multi-voltage

systems.

any of the other monitored power supply voltages fall below

their respective minimum voltage thresholds. The reset

signal remains asserted until all of these voltages return to

proper operating levels and stabilize.

Two of the four voltage monitors have preset thresholds for

either dual 3.3V or one each for one 5V and one 3.3V

supplies. Users can adjust the threshold voltages of the third

and fourth voltage monitors in order to meet specific system

level requirements.

Pinout

ISL88042

(8 LD TDFN)

TOP VIEW

Features

• Quadruple Voltage Monitoring

• Fixed-Voltage Options Allow Precise Monitoring of +5.0V

and +3.3V Power Supplies

• Two Adjustable Voltage Inputs Monitor Voltages > 0.6V

• 95ms Nominal Reset Pulse Width

• Manual Reset Capability

• Immune to Power-Supply Transients

• Low 22µA Maximum Supply Current at 5V

• Pb-Free (RoHS Compliant)

Applications

• Telecom and Datacom Systems

• Routers and Servers

• Access Concentrators

• Cable/Satellite Applications

• Desktop and Notebook Computer Systems

• Data Storage Equipment

• Set-Top Boxes

• Industrial Equipment

• Multi-Voltage Systems

1

2

3

4

8

7

6

5

V2MON

GND

RST

V4MON

V3MON

MR

EPAD

(GND)

Ordering Information

PART NUMBER

(Notes 1, 2)

PART

MARKING

(V)

(V)

TEMP RANGE

(°C)

PACKAGE

Tape & Reel

(Pb-free)

PKG.

DWG. #

ISL88042IRTHFZ-T

4P6

4.60

3.09

-40 to +85

8 Ld TDFN

L8.2x3A

ISL88042IRTHFZ-TK

4P6

4.60

3.09

-40 to +85

8 Ld TDFN

L8.2x3A

ISL88042IRTEEZ-T

2P9

2.87

2.95

-40 to +85

8 Ld TDFN

L8.2x3A

ISL88042IRTEEZ-TK

2P9

2.87

2.95

-40 to +85

8 Ld TDFN

L8.2x3A

ISL88042IRTJJZ-T

2P8

2.78

2.86

-40 to +85

8 Ld TDFN

L8.2x3A

ISL88042IRTJJZ-TK

2P8

2.78

2.86

-40 to +85

8 Ld TDFN

L8.2x3A

NOTES:

1. Please refer to TB347 for details on reel specifications.

2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate

plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products

are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020

.

Data Sheet

June 8, 2009