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TLC555

SLFS043I – SEPTEMBER 1983 – REVISED JULY 2019

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Copyright © 1983–2019, Texas Instruments Incorporated

Table of Contents

1

Features .................................................................. 1

2

Applications ........................................................... 1

3

Description ............................................................. 1

4

Revision History..................................................... 2

5

Pin Configuration and Functions ......................... 4

6

Specifications......................................................... 6

6.1

Absolute Maximum Ratings ...................................... 6

6.2

Recommended Operating Conditions ....................... 6

6.3

Thermal Information .................................................. 6

6.4

6.5

6.6

6.7

Operating Characteristics........................................ 11

6.8

Typical Characteristics ............................................ 12

7

Detailed Description ............................................ 14

7.1

Overview ................................................................. 14

7.2

Functional Block Diagram ....................................... 14

7.3

Feature Description................................................. 14

7.4

Device Functional Modes........................................ 19

8

Application and Implementation ........................ 20

8.1

Application Information............................................ 20

8.2

Typical Applications ................................................ 20

9

Power Supply Recommendations ...................... 26

10

Layout................................................................... 27

10.1

Layout Guidelines ................................................. 27

10.2

Layout Example .................................................... 27

11

Device and Documentation Support ................. 28

11.1

Receiving Notification of Documentation Updates 28

11.2

Community Resources.......................................... 28

11.3

Trademarks ........................................................... 28

11.4

Electrostatic Discharge Caution ............................ 28

11.5

Glossary ................................................................ 28

12

Mechanical, Packaging, and Orderable

Information ........................................................... 28

4 Revision History

Changes from Revision H (August 2016) to Revision I

Page

•

Added MIN value for input voltage in Absolute Maximum Ratings ........................................................................................ 6

•

Added discharge pin in Absolute Maximum Ratings .............................................................................................................. 6

•

Changed MIN supply voltage based on part number in Recommended Operating Conditions............................................. 6

•

TLC555I .................................................................................................................................................................................. 7

•

•

•

•

•

•

Added Operating Characteristics to the Specifications section............................................................................................ 11

•

Added Supply Current vs Supply Voltage chart to the Typical Characteristics section ....................................................... 12

•

Added Control Impedance vs Temperature chart to the Typical Characteristics section .................................................... 12

•

Added Output Low Resistance vs Temperature chart to the Typical Characteristics section.............................................. 12

•

Added Output High Resistance vs Temperature chart to the Typical Characteristics section............................................. 12

•

•

•

Changed trigger high hold time to 1 µs in the Monostable Operation section ..................................................................... 15

•

Changed minimum monostable pulse width to 1 µs in the Monostable Operation section.................................................. 15

•

Changed Output Pulse Duration vs Capacitance chart scale down to 0.001 ms in the Monostable Operation section...... 15

•

Added more astable frequency formulas to the Astable Operation section ......................................................................... 17

•

Changed scale on Free-Running Frequency vs Timing Capacitance chart up to 2 MHz in the Astable Operation section 18

•

Added CONT pin table note to the Function Table in the Device Functional Modes section .............................................. 19

•

Changed the application curve chart in the Pulse-Width Modulation section ...................................................................... 22

•

Changed the application curve charts in the Pulse-Position Modulation section ................................................................. 23

•

Added clamping diodes to Sequential Timer Circuit in the Sequential Timer section.......................................................... 24