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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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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. I would then datasgeet bipolar NPN transistors with the collectors connected to 12V via resistors. BCD inputs and provide appropriate outputs to drive digit incandescent displays. You can skip the bipolar alltogether, and connect your pull-up directly to 12V.

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That makes my life much easier, datasjeet I will have to check on the manufacturer of the devices that I have to make sure that they have the higher voltage tolerance.

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Dztasheet assume that this means that I connect the outputs to my logic VCC via 74ps 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.

So, for the meantime, it looks like my original plan stands, minus the base resistors thanks John! The new topic will begin with this message.

Search Only Within This Topic. 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.

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

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Thanks for your help on this guys! The gates of the HV drivers would be connected to collectors of the bipolars. 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. Do I need to put an inverters between the 74LS and the 74ls1145

74LS145 Datasheet

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.

All outputs remain off for all invalid binary input conditions. 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.

Subject of the new topic: If you want 74sl145 used the FET, substitute the source for the emitter, the gate for the base, and the drain for the collector.