參數(shù)資料
型號： MIC1555BM5
廠商： MICREL INC
元件分類： 運(yùn)動控制電子
英文描述： IttyBitty⑩ RC Timer / Oscillator
中文描述： SQUARE; PULSE; RECTANGULAR, 5 MHz, TIMER, PDSO5
封裝： SOT-23, 5 PIN
文件頁數(shù)： 1/8頁
文件大?。?/td> 166K
代理商： MIC1555BM5
October 1998
1
MIC1555/1557
MIC1555/1557
Micrel
MIC1555/1557
IttyBitty RC Timer / Oscillator
General Description
The MIC1555 IttyBitty CMOS RC timer/oscillator and
MIC1557 IttyBitty CMOS RC oscillator are designed to pro-
vide rail-to-rail pulses for precise time delay or frequency
generation.
The devices are similar in function to the industry standard
“555”, without a frequency control (F
C
) 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.
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 microsec-
onds 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.
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-lead package,
and is rated for –40
°
C to +85
°
C ambient temperature range.
Typical Applications
Features
+2.7V to +18V operation
Low current
<1
μ
A typical shutdown mode (MIC1557)
200
μ
A typical (TRG and THR low) at 3V supply
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
<15
output on resistance
No output cross-conduction current spikes
<0.005%/
°
C temperature stability
<0.055%/V supply stability
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
Ordering Information
Part Number
MIC1555BM5
MIC1557BM5
Temp. Range
–40
°
C to +85
°
C
–40
°
C to +85
°
C
Package
SOT-23-5
SOT-23-5
Marking
T10
T11
Standby
Trigger
VS
OUT
MIC1555
1
3
GND
2
THR
5
+5V
Output
TRG
4
100μs
1k
0.1μF
Monostable (One-Shot)
8kHz
Enabled
Disabled
VS
CS
MIC1557
4
3
GND
2
+5V
OUT
5
T/T
1
Output
1k
0.1μF
Astable (Oscillator)
相關(guān)PDF資料
PDF描述
MIC1557 IttyBitty RC Oscillator(IttyBitty技術(shù)CMOS RC振蕩器)
MIC1810 Microprocessor Reset Circuit(微處理器監(jiān)控電路（在基于微處理器系統(tǒng)中提供電源監(jiān)視）)
MIC1815 Microprocessor Reset Circuit(微處理器監(jiān)控電路（在基于微處理器系統(tǒng)中提供電源監(jiān)視）)
MIC1815_U Microprocessor Reset Circuit
MIC1832 μP Supervisory Circuit(μP監(jiān)控電路(帶看門狗定時器，電源監(jiān)視器和手動復(fù)位功能）)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MIC1555BM5 TR 功能描述:IC OSC MONO TIMING 5MHZ SOT23-5 RoHS:否 類別:集成電路 (IC) >> 時鐘/計(jì)時 - 可編程計(jì)時器和振蕩器 系列:IttyBitty® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:45 系列:- 類型:溫度 - 補(bǔ)償晶體振蕩器（TCXO） 計(jì)數(shù):- 頻率:25MHz 電源電壓:3.135 V ~ 3.465 V 電流 - 電源:1.5mA 工作溫度:-40°C ~ 85°C 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 包裝:管件 供應(yīng)商設(shè)備封裝:16-SOIC W 安裝類型:表面貼裝
MIC1555BM5TR 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述:
MIC1555YM5 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:IttyBitty RC Timer / Oscillator
MIC1555YM5 TR 功能描述:計(jì)時器和支持產(chǎn)品 2.7V to 18V, "555" RC Timer/Oscillator with Trigger Input in SOT23-5 RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel
MIC1555YM5TR 制造商:Micrel 功能描述:Standard Timer Single, Oscillator 5MHz
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