Datasheet > MIC1555

MIC1555

更新时间： 2024-11-30 14:53:15

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
24页	1705K
描述
The MIC1555 IttyBitty??CMOS RC timer/oscillator and MIC1557 IttyBitty??CMOS RC oscillator are desi

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MIC1555 数据手册

MIC1555/57

IttyBitty RC Timer/Oscillator

Features

General Description

• +2.7V to +18V Operation

• Low Current

The MIC1555 IttyBitty CMOS RC timer/oscillator and

MIC1557 IttyBitty CMOS RC oscillator are designed to

provide rail-to-rail pulses for precise time delay or

frequency generation.

- <1 μA Typical Shutdown Mode (MIC1557)

- 200 μA Typical (TRG and THR Low) at 3V

Supply

These devices are similar in function to the industry

standard “555”, without a frequency control (FC) pin or

an open-collector discharge (D) pin. The threshold pin

(THR) has precedence over the trigger (TRG) input,

ensuring that the BiCMOS output is off when TRG is

high.

• Timing from Microseconds to Hours

• “Zero” Leakage Trigger and Threshold Inputs

• 50% Square Wave with One Resistor, One

Capacitor

• Threshold Input Precedence Over Trigger Input

• <15Ω Output On-Resistance

The MIC1555 can be used as an astable (oscillator) or

monostable (one-shot) with separate threshold and

trigger inputs. In the one-shot mode, the output pulse

width is precisely controlled by an external resistor and

a capacitor. Time delays may be accurately controlled

from microseconds to hours. In the oscillator mode, the

output is used to provide precise feedback, with a

minimum of one resistor and one capacitor producing a

50% duty cycle square wave.

• No Output Cross-Conduction Current Spikes

• <0.005%/°C Temperature Stability

• <0.055%/V Supply Stability

• 10-pin Ultra-Thin DFN Package (2 mm × 2 mm ×

0.4 mm)

• Small SOT-23-5 Surface Mount Package

Applications

• Precision Timer

The MIC1557 is designed for astable (oscillator)

operation only, with a chip select/reset (CS) input for

low power shut-down. One resistor and one capacitor

provide a 50% duty cycle square wave. Other duty

cycle ratios may be produced using two diodes and two

resistors.

• Pulse Generation

• Sequential Timing

• Time-Delay Generation

• Missing Pulse Detector

• Micropower Oscillator to 5 MHz

• Charge-Pump Driver

• LED Blinker

The MIC1555/7 are powered from a +2.7V to +18V

supply voltage and are rated for –40°C to +85°C

ambient temperature range. The MIC1555/7 are

available in SOT-23-5, and thin SOT23-5 5-pin

packages. A low profile, ultra-thin UTDFN version of

the MIC1555 (with chip select) is also available.

• Voltage Converter

• Linear Sweep Generator

• Variable Frequency and Duty Cycle Oscillator

 2017-2019 Microchip Technology Inc.

DS20005730B-page 1

12 3 4 5 6 7...24

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与MIC1555相关器件

型号	品牌	获取价格	描述	数据表
MIC1555_10	MICREL	获取价格	IttyBitty RC Timer / Oscillator
MIC1555_15	MICREL	获取价格	IttyBittyÂ® RC Timer/Oscillator
MIC1555BM5	MICREL	获取价格	IttyBitty⑩ RC Timer / Oscillator
MIC1555BM5T&R	MICROCHIP	获取价格	1 Func, 5MHz, CMOS, PDSO5, SOT-23, 5 PIN
MIC1555BM5TX	MICROCHIP	获取价格	IC,TIMER,CMOS,TSOP,5PIN,PLASTIC
MIC1555YD5	MICREL	获取价格	IttyBittyÂ® RC Timer/Oscillator
MIC1555YM5	MICREL	获取价格	IttyBitty RC Timer / Oscillator
MIC1555YM5TR	MICROCHIP	获取价格	SQUARE; PULSE; RECTANGULAR, 5MHz, TIMER, PDSO5, LEAD FREE, SOT-23, 5 PIN
MIC1555YM5TR	MICREL	获取价格	SQUARE; PULSE; RECTANGULAR, 5MHz, TIMER, PDSO5, LEAD FREE, SOT-23, 5 PIN
MIC1555YM5-TR	MICROCHIP	获取价格	SQUARE; PULSE; RECTANGULAR, 5MHz, TIMER, PDSO5

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