TLC556: TLC556ID design help

Zhonghui Xu

Expert 5445 points

Part Number: TLC556

Hi team,

How the timer chip realize that the output pin exports high level for 10 seconds and low level for 50 seconds.

And would you tell me how to set the resistors and capacitors value if the chip is capable to do so.

Best regareds,

over 3 years ago

0 Chris Featherstone over 3 years ago

TI__Mastermind 20570 points

Hello,

What mode of operation are you trying to achieve this result in? Astable, Monostable, Bistable? In Astable mode the frequency is calculated by

1/(th + tl) = 1/60 = 16mHz.

This frequency is too low for Astable mode. The bistable mode however can be used to control the output waveform for any desired amount of time. In Bistable mode the output is controlled by using switches on the trigger and reset pins.

0 Zhonghui Xu over 3 years ago in reply to Chris Featherstone

TI__Expert 5445 points

thanks,it is useful.

Clock & timing

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TLC556: TLC556ID design help