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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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 bipolars? Are you sure you wish to delete this message from the message archives of neonixie-l groups.

Search Only Within This Topic. I amy have misundertood you completely, but I think there is a much simpler solution. Thanks for your help on this guys! I assume that this means that I connect the outputs to my logic VCC via 74ps I would then have bipolar NPN transistors with the collectors connected to 74ls1455 via resistors.


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74LS145 Datasheet PDF

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.

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. 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.


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. The bases of the bipolars would 74lz145 connected to eatasheet outputs of the 74LS via resistors.

(PDF) 74LS145 Datasheet download

So, for the meantime, it looks like my original plan stands, minus the base resistors thanks John! SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur.

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

You can skip the bipolar alltogether, and connect your pull-up directly to 12V.