SN74CBT3125: SN74CBT3125 :4-channel general-purpose FET bus switch: "Not getting correct output "

ASHWINI CHANDRASHEKAR

Prodigy 30 points

Part Number: SN74CBT3125
Other Parts Discussed in Thread: TMUX1511, SN74HC4066

As per its functionality, if NOE is low ,Aport = Bport.

But when simulation is done ,the waveform is not as accepted, meaning Aport = Bport.

Kindly help to resolve this issue.

over 2 years ago

0 Clemens Ladisch over 2 years ago

Guru 298460 points

This is an old device designed for TTL signals that do not go near 5 V, so it uses a single N-channel transistor; see [FAQ] What are the Types of Architectures TI Switches and Multiplexers Use and how do I know which one my device has internally?

If you need to support signals up to V_CC, use a switch with transmission gates, e.g., SN74HC4066 or TMUX1511.

0 Rami Mooti1 over 2 years ago

TI__Mastermind 29648 points

Hey Ashwini,

Looks like you rejected this answer. Did you have any extra questions or thoughts here?
Can you maybe share what your inputs and outputs are and what you're using to simulate to help with our debugging and check is what you're seeing is expected?

Thanks
Rami

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SN74CBT3125: SN74CBT3125 :4-channel general-purpose FET bus switch: "Not getting correct output "