HT70XX

Voltage Detector

Selection Table

Part No.

Detectable Voltage

Hysteresis Width

Tolerance

HT7022A

2.2V

0.11V

±5%

HT7024A

2.4V

0.12V

±5%

HT7027A

2.7V

0.135V

±5%

HT7033A

3.3V

0.165V

±5%

HT7039A

3.9V

0.195V

±5%

HT7044A

4.4V

0.22V

±5%

HT7050A

5.0V

0.25V

±5%

HT7070A

7.0V

0.35V

±5%

Note:

The output type selection codes are:

NMOS open drain normal open, active low

For example: The HT7070A is a 7.0V, NMOS open drain active low output

Output type selection table

Type

A

Hi-Z

VSS

Rev. 1.60

1

January 14, 2003

General Description

The HT70XX series is a set of three-terminal low power

voltage detectors implemented in CMOS technology.

Each voltage detector in the series detects a particular

fixed voltage ranging from 2.2V to 7V. The voltage de-

tectors consist of a high-precision and low power con-

sumption standard voltage source, a comparator,

hysteresis circuit, and an output driver. CMOS technol-

ogy ensures low power consumption.

Although designed primarily as fixed voltage detectors,

these devices can be used with external components to

detect user specified threshold voltages (NMOS open

drain type only).

Features

Applications