Datasheet LMC555 (Texas Instruments)

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LMC555
SNAS558M – FEBRUARY 2000 – REVISED JULY 2016
LMC555 CMOS Timer 1 Features 3 Description
• Industry's Fastest Astable Frequency of 3 MHz The LMC555 device is a CMOS version of the 1 industry standard 555 series general-purpose timers. • Available in Industry's Smallest 8-Bump DSBGA In addition to the standard package (SOIC, VSSSOP, Package (1.43mm × 1.41mm) and PDIP) the LMC555 is also available in a chip- • Less Than 1 mW Typical Power Dissipation at 5 V sized package (8-bump DSBGA) using TI's DSBGA Supply package technology. The LMC555 offers the same • 1.5 V Supply Operating Voltage Ensured capability of generating accurate time delays and frequencies as the LM555 but with much lower power • Output Fully Compatible With TTL and CMOS dissipation and supply current spikes. When operated Logic at 5 V Supply as a one-shot, the time delay is precisely controlled • Tested to −10 mA, 50 mA Output Current Levels by a single external resistor and capacitor. In the • Reduced Supply Current Spikes During Output astable mode the oscillation frequency and duty cycle Transitions are accurately set by two external resistors and one capacitor. The use of TI's LMCMOS process extends • Extremely Low Reset, Trigger, and Threshold both the frequency range and the low supply Currents capability. • Excellent Temperature Stability • Pin-for-Pin Compatible With 555 Series of Timers
Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) 2 Applications
SOIC (8) 4.90 mm × 3.91 mm • Precision Timing VSSOP (8) 3.00 mm × 3.00 mm LMC555 PDIP (8) 9.81 mm × 6.35 mm • Pulse Generation DSBGA (8) 1.43 mm × 1.41 mm • Sequential Timing • Time Delay Generation (1) For all available packages, see the orderable addendum at the end of the data sheet. • Pulse Width Modulation • Pulse Position Modulation • Linear Ramp Generators
Pulse Width Modulator Pulse Width Modulator Waveform: Top Waveform - Modulation Bottom Waveform - Output Voltage
1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. Document Outline 1 Features 2 Applications 3 Description Table of Contents 4 Revision History 5 Pin Configuration and Functions 6 Specifications 6.1 Absolute Maximum Ratings 6.2 ESD Ratings 6.3 Recommended Operating Conditions 6.4 Thermal Information 6.5 Electrical Characteristics 7 Parameter Measurement Information 8 Detailed Description 8.1 Overview 8.2 Functional Block Diagram 8.3 Feature Description 8.3.1 Low-Power Dissipation 8.3.2 Various Packages and Compatibility 8.3.3 Operates in Both Astable and Monostable Mode 8.4 Device Functional Modes 8.4.1 Monostable Operation 8.4.2 Astable Operation 9 Application and Implementation 9.1 Application Information 9.2 Typical Application 9.2.1 Design Requirements 9.2.2 Detailed Design Procedure 9.2.3 Application Curve 9.3 Frequency Divider 9.3.1 Design Requirements 9.3.2 Application Curve 9.4 Pulse Width Modulator 9.4.1 Design Requirements 9.4.2 Application Curve 9.5 Pulse Position Modulator 9.5.1 Design Requirements 9.5.2 Application Curve 9.6 50% Duty Cycle Oscillator 9.6.1 Design Requirements 10 Power Supply Recommendations 11 Layout 11.1 Layout Guidelines 11.2 Layout Example 12 Device and Documentation Support 12.1 Receiving Notification of Documentation Updates 12.2 Community Resources 12.3 Trademarks 12.4 Electrostatic Discharge Caution 12.5 Glossary 13 Mechanical, Packaging, and Orderable Information