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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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.

74LS14, 74LS145, 74LS145D

Subject of the new topic: Medias this blog was made to help people to easily download or read PDF files. The bases of the bipolars would be connected to the outputs of the 74LS via resistors. The new topic will begin with this message.

Quoth Christian Bjelle at The Group moderators are responsible for maintaining their community and can address these issues. I assume that this means that I connect the outputs to my logic VCC via 74ps Your email datashest included with the abuse report.

74LS Datasheet(PDF) – ON Semiconductor

Search Only Within This Topic. Thanks for your help on this guys! I would then have bipolar NPN transistors with the collectors connected to 12V via resistors. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts.


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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. Do I need to put an inverters between the 74LS and the bipolars?

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I amy have misundertood you completely, but I think there is a much simpler solution.


BCD inputs and provide appropriate outputs to drive digit incandescent displays. 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. 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 datashwet device.


74LS (Hitachi) – Bcd-to-decimal Decoders / Drivers(with 15v Outputs)

You can skip the bipolar alltogether, and connect your pull-up directly to 12V. Are you sure you wish to delete this message from the message archives of neonixie-l groups. If you want to 74lx145 the FET, substitute the source for the emitter, the gate for the base, and the drain for the collector.

All outputs remain off for all invalid binary input conditions. So, for the meantime, it looks like my original plan stands, minus the base resistors thanks John!

The gates of the HV drivers would be connected to collectors of the bipolars.