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. 74LS datasheet, 74LS circuit, 74LS data sheet: ONSEMI – 1-of Decoder / Drvier Open-Collector,alldatasheet, datasheet, Datasheet search site .
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Medias this datsaheet was made to help people to easily download or read PDF files. I assume that this means that I connect the outputs to my logic VCC via 74ps Are you sure you wish to delete this message from the message archives of neonixie-l groups.
I amy have misundertood you completely, but I think there is a much simpler solution. Quoth Christian Bjelle at The Group moderators are responsible for maintaining their community and can address these issues.
Do I need to put an inverters between the 74LS and the bipolars? 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 dataseet picture gives the inversion you need. 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 datasyeet and all liability, including without limitation special, consequential or incidental damages.
The bases of the bipolars would be connected to the outputs of the 74LS via resistors. I would then have bipolar NPN transistors with the collectors connected to 12V via resistors.
So, for the meantime, it looks like datashheet original plan stands, minus the base resistors thanks John! Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part.
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Search Only Within This Topic. Thanks for your help on this guys!
Subject of the new topic: Your email is included with the abuse report. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. You can skip the bipolar alltogether, and connect your pull-up directly to 12V.
If the 74LS will 47ls145 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. The new topic will begin with this message. All outputs remain off for all invalid binary input conditions. BCD inputs and provide appropriate outputs to drive digit incandescent displays. If you want to used the FET, substitute the source for the emitter, the gate for the base, and the drain for the collector.
The gates of the HV drivers would be connected to collectors of the bipolars. 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. 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.