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MIC1557YM5TR

更新时间： 2024-02-03 09:41:54

品牌	Logo	应用领域
麦瑞 - MICREL		振荡器光电二极管
页数	文件大小	规格书
10页	159K
描述
SQUARE; PULSE; RECTANGULAR, 5MHz, TIMER, PDSO5, LEAD FREE, SOT-23, 5 PIN

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MIC1557YM5TR 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	LSSOP, TSOP5/6,.11,37	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	1.66	其他特性：	IT CAN ALSO OPERATE AT 15V NOMINAL
模拟集成电路 - 其他类型：	SQUARE; PULSE; RECTANGULAR	JESD-30 代码：	R-PDSO-G5
JESD-609代码：	e4	长度：	2.9 mm
湿度敏感等级：	1	功能数量：	1
端子数量：	5	最高工作温度：	85 °C
最低工作温度：	-40 °C	最大输出频率：	5 GHz
封装主体材料：	PLASTIC/EPOXY	封装代码：	LSSOP
封装等效代码：	TSOP5/6,.11,37	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified	座面最大高度：	1.45 mm
最大供电电流 (Isup)：	0.315 mA	最大供电电压 (Vsup)：	18 V
最小供电电压 (Vsup)：	2.7 V	标称供电电压 (Vsup)：	5 V
表面贴装：	YES	技术：	CMOS
温度等级：	INDUSTRIAL	端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：	GULL WING	端子节距：	0.95 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	40
宽度：	1.6 mm	Base Number Matches：	1

MIC1557YM5TR 数据手册

MIC1555/1557

IttyBitty^®RC Timer / Oscillator

General Description

Features

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.

• +2.7V to +18V operation

• Low current

− <1µA typical shutdown mode (MIC1557)

− 200µA typical (TRG and THR low) at 3V supply

The 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 (TH) has

precedence over the trigger (TR) input, ensuring that the

BiCMOS output is off when TR 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

• No output cross-conduction current spikes

• <0.005%/°C temperature stability

• <0.055%/V supply stability

The MIC1555 may 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 micro-

seconds 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.

• Small SOT-23-5 surface mount package

Applications

• Precision timer

• Pulse generation

• Sequential timing

• Time-delay generation

• Missing pulse detector

• Micropower oscillator to 5MHz

• Charge-pump driver

• LED blinker

• Voltage converter

• Linear sweep generator

• Variable frequency and duty cycle oscillator

• Isolated feedback for power supplies

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.

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

voltage.

The MIC1555/7 is available in the SOT-23-5 5-pin

package, and is rated for –40°C to +85°C ambient

temperature range

Typical Application

+5V

100µs

8kHz

MIC1555

MIC1557

¹³VS

OUT

Output

OUT

Output

Standby

Trigger

Enabled

Disabled

TRG

GND

THR

GND

T/T

0.1µF

Monostable (One-Shot)

Astable (Oscillator)

IttyBitty is a registered trademark of Micrel, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

M9999-052610-D

May 2010

12 3 4 5 6 7...10

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