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MIC1555

Status: In Production

Features:

  • +2.7V to +18V operation
  • <1µA typical shutdown mode (MIC1557)
  • 200µA 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
  • <15Ω 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
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

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.The devices are similar in function to the industry standard "555", without a frequency control (FC) pin or an opencollector 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 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.The MIC1557 is designed for astable (oscillator) operation only, with a chip select/reset (CS) input for low power shutdown. 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.

Additional Features
    • +2.7V to +18V operation
    • Low current
      • <1µA typical shutdown mode (MIC1557)
      • 200µA 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
    • <15Ω 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
Parametrics
Name
Value
Product Type
Timers
Description
555 RC CMOS Timer/Osc
PDB
False
OE
False
FSEL
False
CSEL
False
CLK
False
Ultra Low Power
False

Documents

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Data Sheet


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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC1555YM5-TR
0.017400
0.049000
5
SOT-23
 
NiPdAu
e4
MIC1555YD5-TR
0.012600
0.149200
5
TSOT
 
NiPdAu
e4
MIC1555YMU-TR
0.711789
10
X2DFN
2x2x0.4mm
Au Flash
e4
MIC1555YMU-T5
0.711789
10
X2DFN
2x2x0.4mm
Au Flash
e4
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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