Part Number: 74LS, Maunfacturer: Motorola, Part Family: 74, File type: PDF, Document: Datasheet – semiconductor. 74LS datasheet, 74LS circuit, 74LS data sheet: MOTOROLA – 1-OF- 10 DECODER/DRIVER OPEN-COLLECTOR,alldatasheet, datasheet. Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise .
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SK74LS/74LS NTE Equivalent NTE74LS IC-TTL BCD DECODE – Wholesale Electronics
The bases of the bipolars would be connected to the outputs of the 74LS via resistors. Thanks for your help on this guys! Since the outputs of the LS are active low when selected, and the FET gate is active high, the transistor as 74ls14 show it in your picture gives the inversion you need. Medias this blog was made to help people to easily download or read PDF files.
That makes my life much easier, although I will have to check on the manufacturer of the devices that I have to make sure that they have the higher voltage tolerance. All outputs remain off for all invalid binary input conditions. The gates of the HV drivers would be connected to collectors of the bipolars.
Do I need to put an inverters between the 74LS and the bipolars?
Motorola – datasheet pdf
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I would then have bipolar NPN transistors with the collectors connected to 12V via resistors. You can skip the bipolar alltogether, and connect your pull-up directly to 12V.
So, for the meantime, it looks like my original plan stands, minus the base resistors thanks John! Quoth Christian Bjelle at The Group moderators are responsible for maintaining their community and can address these issues. If you want to used the FET, substitute the source for the 7ls145, the gate for the base, and the drain for the collector.
I assume that this means that I connect dtaasheet outputs to my logic VCC via 74ps Your email is included with the abuse report. This is certainly a technique to apply for other applications I have a LOT to learn in the analogue fieldbut I think that we would have the same issue that John pointed out — the control signals are inverted and still need to be flipped before they get to the output device.
If the 74LS will sink enough current, I think you should be able to meet your needs with a cascode stage, and this will only require one transistor and maybe one resistor per output. Are you sure you wish vatasheet delete this message from the message archives of neonixie-l groups. Subject of the new topic: SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
I amy have misundertood you completely, but I think there is a much simpler solution.