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Author Topic: Shift Register that can give me more than 8 pins ?  (Read 514 times)
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Lebanon
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hello guys,
i need please a shift register that can give me more than 8 pins , maybe about 10 and more and is similar to the 595 ?

and thanks in advance
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Brisbane, Australia
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Hi,

An easy way is to daisy-chain more 595's.  Check this example where two are used to drive 16 outputs (in this case simple LEDs).

Cheers !
Geoff
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Lebanon
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yes i know it but it would be better if i get one IC in the circuit to have more space for other components
« Last Edit: July 18, 2013, 07:12:00 am by firashelou » Logged

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Valencia, Spain
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There's this: http://www.ti.com/lit/ds/symlink/sn74ls674.pdf

But they're double-wide so it won't save any space and don't ask me where you'd get one for less than about $40.

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Lebanon
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There's this: http://www.ti.com/lit/ds/symlink/sn74ls674.pdf

But they're double-wide so it won't save any space and don't ask me where you'd get one for less than about $40.



aw ok then no for sure i won't buy it !! the 595 cost is 0.5$ !! smiley-grin
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Cumming, GA
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Yup, Mouser.com price: $31.10 and its roughly the equivalent of 2 cascaded 595's
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If you want to save space you could always use SMD ones for your final design... those packages aren't very challenging to solder and you can stuff a LOT of them in a small space.
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Lebanon
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If you want to save space you could always use SMD ones for your final design... those packages aren't very challenging to solder and you can stuff a LOT of them in a small space.

i don't know how to work with SMDs and i don't feel i like the SMD !!
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How about the PCA9555 ?
Has 16 bidirectional pins.
Don't know about availability, but the datasheet mentions through hole pins.
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Have a look at "blink without delay".
Did you connect the grounds ?
Je kunt hier ook in het Nederlands terecht: http://arduino.cc/forum/index.php/board,77.0.html

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SMD 595's are the best way for 2 reasons.. 1. cost 2. space

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Lebanon
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SMD 595's are the best way for 2 reasons.. 1. cost 2. space



but it can be used as the normal one ?! i mean like it can't be soldered like you solder the normal IC
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Cumming, GA
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why not.  I "normally" solder SMD's quite often with my normal soldering iron.  It takes a steady hand and some patience... but it works.
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Lebanon
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why not.  I "normally" solder SMD's quite often with my normal soldering iron.  It takes a steady hand and some patience... but it works.

well maybe someday i'll try it, cz i have an SMD chip but it's very very small, maybe a socket will make it easy
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