LMC555 Timer Datasheet

LMC555 Datasheet, PDF, Equivalent


Part Number

LMC555

Description

CMOS Timer

Manufacture

etcTI

Total Page 30 Pages
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LMC555 CMOS Timer
LMC555
SNAS558M – FEBRUARY 2000 – REVISED JULY 2016
1 Features
1 Industry's Fastest Astable Frequency of 3 MHz
• Available in Industry's Smallest 8-Bump DSBGA
Package (1.43mm × 1.41mm)
• Less Than 1 mW Typical Power Dissipation at 5 V
Supply
• 1.5 V Supply Operating Voltage Ensured
• Output Fully Compatible With TTL and CMOS
Logic at 5 V Supply
• Tested to 10 mA, 50 mA Output Current Levels
• Reduced Supply Current Spikes During Output
Transitions
• Extremely Low Reset, Trigger, and Threshold
Currents
• Excellent Temperature Stability
• Pin-for-Pin Compatible With 555 Series of Timers
2 Applications
• Precision Timing
• Pulse Generation
• Sequential Timing
• Time Delay Generation
• Pulse Width Modulation
• Pulse Position Modulation
• Linear Ramp Generators
3 Description
The LMC555 device is a CMOS version of the
industry standard 555 series general-purpose timers.
In addition to the standard package (SOIC, VSSSOP,
and PDIP) the LMC555 is also available in a chip-
sized package (8-bump DSBGA) using TI's DSBGA
package technology. The LMC555 offers the same
capability of generating accurate time delays and
frequencies as the LM555 but with much lower power
dissipation and supply current spikes. When operated
as a one-shot, the time delay is precisely controlled
by a single external resistor and capacitor. In the
astable mode the oscillation frequency and duty cycle
are accurately set by two external resistors and one
capacitor. The use of TI's LMCMOS process extends
both the frequency range and the low supply
capability.
Device Information(1)
PART NUMBER PACKAGE
BODY SIZE (NOM)
SOIC (8)
4.90 mm × 3.91 mm
LMC555
VSSOP (8)
PDIP (8)
3.00 mm × 3.00 mm
9.81 mm × 6.35 mm
DSBGA (8)
1.43 mm × 1.41 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
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.

LMC555
LMC555
SNAS558M – FEBRUARY 2000 – REVISED JULY 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information ................................................. 4
6.5 Electrical Characteristics........................................... 5
7 Parameter Measurement Information .................. 6
8 Detailed Description .............................................. 7
8.1 Overview ................................................................... 7
8.2 Functional Block Diagram ......................................... 7
8.3 Feature Description................................................... 7
8.4 Device Functional Modes.......................................... 8
9 Application and Implementation ........................ 12
9.1 Application Information............................................ 12
9.2 Typical Application ................................................. 12
9.3 Frequency Divider ................................................... 14
9.4 Pulse Width Modulator ............................................ 14
9.5 Pulse Position Modulator ........................................ 15
9.6 50% Duty Cycle Oscillator ...................................... 16
10 Power Supply Recommendations ..................... 17
11 Layout................................................................... 17
11.1 Layout Guidelines ................................................. 17
11.2 Layout Example .................................................... 17
12 Device and Documentation Support ................. 18
12.1 Receiving Notification of Documentation Updates 18
12.2 Community Resources.......................................... 18
12.3 Trademarks ........................................................... 18
12.4 Electrostatic Discharge Caution ............................ 18
12.5 Glossary ................................................................ 18
13 Mechanical, Packaging, and Orderable
Information ........................................................... 18
4 Revision History
Changes from Revision L (February 2016) to Revision M
Page
• Changed order of Features list. ............................................................................................................................................. 1
• Changed stable to astable - typo. .......................................................................................................................................... 1
• Changed stable to astable - typo. .......................................................................................................................................... 7
• Changed beings to begins typo. ............................................................................................................................................. 8
• Changed typo LM555 to LMC555. ...................................................................................................................................... 12
• Changed typo LM555 to LMC555. ...................................................................................................................................... 12
• Added additional applications. ............................................................................................................................................. 14
Changes from Revision K (January 2015) to Revision L
Page
• Changed typo - temp range from 185 to 85 .......................................................................................................................... 4
Changes from Revision J (March 2013) to Revision K
Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
Changes from Revision I (March 2013) to Revision J
Page
• Changed layout of National Semiconductor Data Sheet to TI format ................................................................................. 17
2 Submit Documentation Feedback
Product Folder Links: LMC555
Copyright © 2000–2016, Texas Instruments Incorporated


Features Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity LMC555 CMOS Timer LMC555 SNAS5 58M – FEBRUARY 2000 – REVISED JULY 2016 1 Features •1 Industry's Fastes t Astable Frequency of 3 MHz • Availa ble in Industry's Smallest 8-Bump DSBGA Package (1.43mm × 1.41mm) • Less Th an 1 mW Typical Power Dissipation at 5 V Supply • 1.5 V Supply Operating Vol tage Ensured • Output Fully Compatibl e With TTL and CMOS Logic at 5 V Supply • Tested to −10 mA, 50 mA Output C urrent Levels • Reduced Supply Curren t Spikes During Output Transitions • Extremely Low Reset, Trigger, and Thres hold Currents • Excellent Temperature Stability • Pin-for-Pin Compatible W ith 555 Series of Timers 2 Applications • Precision Timing • Pulse Generat ion • Sequential Timing • Time Dela y Generation • Pulse Width Modulation • Pulse Position Modulation • Line ar Ramp Generators 3 Description The L MC555 device is a CMOS version of the industry standard 555 series general-purpose timers. In addition t.
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