HT70XX

Voltage Detector电子杂志制作软件

Selection Table

Part No.Detectable Voltage

Hysteresis Width

Tolerance

HT7024A 2.4V 0.12V ±5%HT7027A 2.7V 0.135V ±5%HT7033A/B 3.3V 0.165V ±5%HT7039A 3.9V 0.195V ±5%HT7044A/B 4.4V 0.22V ±5%HT7050A 5V 0.25V ±5%HT7070A

0.35V

±5%

Note:The output type selection codes are:

NMOS open drain normal open,active low PMOS open drain normal open,active high

For example:The HT7070A is a 7V ,NMOS open drain active low output

1February 14,2000

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 1.5V to 7V .The voltage detectors consist of a high-precision and low power consumption standard voltage source,a comparator,hyster-esis circuit,and an output driver.CMOS tech-nology ensures low power consumption.Although designed primarily as fixed voltage detectors,these devices can be used with exter-nal components to detect user specified thresh-old voltages (NMOS open drain type only).

Features

·Low power consumption ·Low temperature coefficient

Built-in high-stability reference source

·Built-in hysteresis characteristic ·TO-92&SOT-89package

Applications

实践理性批判·Battery

checkers ·Level selectors

Power failure detectors ·Microcomputer reset ·Battery memory backup

·Non-volatile RAM signal storage protectors

Output type selection table

V DD

V DD >V DET (+)光谱范围

V DD £V DET (-)

Type

V OUT A Hi-Z VSS B

Hi-Z

VDD

Block Diagram

N channel open drain output (normal open;active low)

口角糜烂

A type

2February 14,

2000

P channel open drain output(normal open;active high)

B type

3February14,2000

Pin Assignment Pad Assignment

Chip size:1317´1158(m m)2

*The IC substrate should be connected to VDD in

休克的原则

the PCB layout artwork.

晒客Pad Coordinates Unit:m m

Pad No.X Y

1-483.30-379.50

2-234.60-399.50

3443.90-386.00

Absolute Maximum Ratings

-0.3V to26V 50mA V SS-0.3V to V DD+0.3V -50°C to125°C 200mW 0°C to70°C Note:These are stress ratings only.Stresses exceeding the range specified under²Absolute Maxi-mum Ratings²may cause substantial damage to the device.Functional operation of this de-vice at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.

4February14,2000

Electrical Characteristics

HT7024A Ta=25°C

HT7027A Ta=25°C

5February14,2000

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