25Mhz switch/Multiplexer

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explorick

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I wanted to input two digital signals (bus) each of 12 bit wide to a device and output one of them based on a select input. The maximum frequecy on the bus could be 25MHz. Is there a digital logic family that satisfies this requirement( Like switch/multiplexer ). As of my knowledge I could use a tristate buffer on the two lines and tie the outputs of the tristate buffer together. Otherway is to use a FPGA and program it as per the need.
Please let me know if you have any other solutions thats economical.
Please excuse: I posted this one in digital section but there is no response, so I am posting here.
 

Hi,
Here is one (5V)possibility : **broken link removed**
They have in 3.3V versions some similars too...
K.
 

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    explorick

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karesz,
Thanks for your suggestion

Added after 3 hours 30 minutes:

I had a look on other devices and found 74AC157. I can use 3 such devices. But here the propagation dealy is 13ns. Will it be ok if I transmit a digital bus line that operates at 25Mhz?
 

Hi,
I think, these is a system-timing question...
If you dont have a back/handshaking (or retour)signal_I dont see some problem.
K.
 

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