© 2002 Microchip Technology Inc.

DS21346B-page 1

Features

• Combines Two Comparators and a Voltage

Reference in a Single Package

• Optimized for Single Supply Operation

• Available in Two Small Packages: 8-Pin SOIC or

8-Pin MSOP

• Ultra Low Input Bias Current: Less than 100pA

• Low Quiescent Current, Operating: 10

µA(Typ.)

• Rail-to-Rail Inputs and Outputs

• Programmable Hysteresis

Applications

• Power Supply Circuits

• Battery Operated Equipment

• Consumer Products

• Replacements for Discrete Components

Device Selection Table

Package Types

General Description

The TC1041 is a mixed-function device combining two

comparators and a voltage reference in a single 8-pin

package. The inverting inputs of both comparators are

internally connected to the reference.

This increased integration allows the user to replace

two packages, which saves space, lowers supply

current and increases system performance. The

TC1041 operates from two 1.5V alkaline cells down to

which significantly extends battery life. The TC1041

provides a simple method for adding user-adjustable

hysteresis without feedback or complex external

circuitry. Hysteresis is adjusted with a simple resistor

divider on the HYST pin.

Rail-to-rail inputs and outputs allow operation from low

supply voltages with large input and output signal

swings.

Packaged in an 8-Pin SOIC or 8-Pin MSOP, the

TC1041 is ideal for applications requiring low power

and small packages.

Functional Block Diagram

Part Number

Package

Temperature

Range

TC1041CEOA

8-Pin SOIC

-40°C to +85°C

TC1041CEUA

8-Pin MSOP

-40°C to +85°C

INB-

REF

1

2

3

4

8

7

6

5

TC1041CEOA

TC1041CEUA

8-Pin SOIC

8-Pin MSOP

OUTB

INA+

OUTA

HYST

–

–

TC1041

OUTB

REF

HYST

INB+

INA+

OUTA

B

A

Voltage

Reference

1

2

3

4

5

6

7

8

TC1041

Linear Building Block – Dual Low Power Comparator and

Voltage Reference with Programmable Hysteresis