Shift Register TI ''LS674
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Posts: 46,084
Has this been written up as a tutorial in some form ?
Seems like a great solution to us non experts.
--- In basicstamps@au.egroups.com, "Philippe Derenne" <derennep@s...>
wrote:
> Hi Bob,
>
> I used a 74HC165 parallel-in serial-out shift register to read
external
> informations via optocouplers. If you need more inputs for your
Stamp, it's
> what you need.
> This chip is easy to use : clock input to shift the datas, inhibit
input to
> disable the chip, and shift/load input to read inputs / shift to
output.
> It's cascadable, so if you need 16 inputs, you only need 2 linked
chips and
> 16 clock pulses. So with 4 (or even 3 if you don't use the inhibit
input)
> stamp lines, you can have nearly as many inputs as you want.
>
> Hope this helps...
>
> Phil.
>
>
Original Message
> From: "Pence Bob" <bobpence_2000@y...>
> To: <basicstamps@y...>
> Sent: Friday, May 11, 2001 8:26 PM
> Subject: [noparse][[/noparse]basicstamps] Shift Register TI 'LS674
>
>
> > Anyone have experience with the Texas Instruments
> > SN54/SN74LS674 parallel-in serial-out shift register?
> > I though I had mastered the machinations of shift
> > devices after getting an LTC1298 ADC to work, but the
> > 'LS674 adds the R_W pin to select whether its single
> > I/O pin reads or writes; also, I am tying the Mode
> > switch to +5vdc. I need to connect two 8-pin DIP
> > switch banks.
> >
> > Thanks in advance
> >
> > Bob Pence
> >
> > =====
> > Regards,
> >
> > Bob Pence
> >
> > NOTE: This mail is sent using my wireless phone. Calling me at 1
(610)
> 563-6198 is preferred to a reply. If replying to this email
address, please
> do not quote the original message.
> >
> > __________________________________________________
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> >
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http://docs.yahoo.com/info/terms/
> >
> >
> >
Seems like a great solution to us non experts.
--- In basicstamps@au.egroups.com, "Philippe Derenne" <derennep@s...>
wrote:
> Hi Bob,
>
> I used a 74HC165 parallel-in serial-out shift register to read
external
> informations via optocouplers. If you need more inputs for your
Stamp, it's
> what you need.
> This chip is easy to use : clock input to shift the datas, inhibit
input to
> disable the chip, and shift/load input to read inputs / shift to
output.
> It's cascadable, so if you need 16 inputs, you only need 2 linked
chips and
> 16 clock pulses. So with 4 (or even 3 if you don't use the inhibit
input)
> stamp lines, you can have nearly as many inputs as you want.
>
> Hope this helps...
>
> Phil.
>
>
Original Message
> From: "Pence Bob" <bobpence_2000@y...>
> To: <basicstamps@y...>
> Sent: Friday, May 11, 2001 8:26 PM
> Subject: [noparse][[/noparse]basicstamps] Shift Register TI 'LS674
>
>
> > Anyone have experience with the Texas Instruments
> > SN54/SN74LS674 parallel-in serial-out shift register?
> > I though I had mastered the machinations of shift
> > devices after getting an LTC1298 ADC to work, but the
> > 'LS674 adds the R_W pin to select whether its single
> > I/O pin reads or writes; also, I am tying the Mode
> > switch to +5vdc. I need to connect two 8-pin DIP
> > switch banks.
> >
> > Thanks in advance
> >
> > Bob Pence
> >
> > =====
> > Regards,
> >
> > Bob Pence
> >
> > NOTE: This mail is sent using my wireless phone. Calling me at 1
(610)
> 563-6198 is preferred to a reply. If replying to this email
address, please
> do not quote the original message.
> >
> > __________________________________________________
> > Do You Yahoo!?
> > Yahoo! Auctions - buy the things you want at great prices
> > http://auctions.yahoo.com/
> >
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
> >