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 you want to used the FET, substitute the source for the emitter, the gate for the base, and the drain for the collector. Medias this blog was made to help people to easily download or read PDF files.
Motorola – datasheet pdf
Thanks for your help on this guys! BCD inputs and provide appropriate outputs to drive digit incandescent displays.
I amy have misundertood you completely, but I think there datasheeet a much simpler solution. Subject of the new topic: I would then have bipolar NPN transistors with the collectors connected to 12V via resistors.
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Search Only Within This Topic. So, 74le145 the meantime, it looks like my original plan stands, minus the base resistors thanks John! I assume that this means that I connect the outputs to my logic VCC via 74ps 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.
All outputs remain off for all invalid binary input conditions. SCILLC makes 74l145 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.
74LS 데이터시트(PDF) – Motorola, Inc
The new topic will begin with this message. 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.
The bases of the bipolars would be connected to the outputs of the 74LS via resistors. 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.
(PDF) 74LS145 Datasheet download
You can skip the bipolar alltogether, and connect your pull-up directly to 12V. Do I need to put an inverters between the 74LS and the bipolars?
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.