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DS21434J-page 1

TC54

Features

• ±2.0% Detection Thresholds

• Small Packages: 3-Pin SOT-23A, SOT-89, and

TO-92

• Low Current Drain: 1 µA, typical

• Wide Detection Range: 1.1V to 6.0V

• Wide Operating Voltage Range: 0.7V to 10V

Applications

• Battery Voltage Monitoring

• Microprocessor Reset

• System Brown-Out Protection

• Switching Circuit in Battery Backup

• Level Discriminator

Functional Block Diagram

General Description

The TC54 series are CMOS voltage detectors that are

especially well suited for battery-powered applications

because of their extremely low 1 µA operating current

and small surface-mount packaging. Each part is laser-

trimmed to the desired threshold voltage, which can be

specified from 1.4V to 6.0V with a 2% tolerance.

The TC54 is available with either an open-drain or com-

plementary output stage. During operation, the output

high state.

Package Types

Device Features

+

–

TC54VC only

TC54VN has open-drain output.

TC54VC has complementary (push-pull) output.

1

3

2

TC54

3-Pin SOT-89

Note:

3-Pin SOT-23A is equivalent to the

EIAJ SC-59.

3-Pin TO-92

12 3

3

12

TC54

3-Pin SOT-23A

Device

Output

Reset Delay

Type

State

TC54VN

Open-Drain

Active Low

No

1.4V, 2.1V, 2.7V, 2.9V

TC54VC

Push-Pull

Active Low

No

3.0V, 4.2V, 4.3V

Note 1:

Custom Trip Points available. Minimum order requirement. Information available upon request.

Voltage Detector