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LSF0204: LSF0204

Part Number: LSF0204
Other Parts Discussed in Thread: TXV0106, SN74AXC4T774

Tool/software:

Hi Jack

We are looking this device for Test (ATE) applications where different data protocols (as SPI, JTAG etc.) are running.

One side (Vref_B) we will have fixed signal voltage as 3.3V and another side (Vref_A) there will be programmable signal voltages from 0.8V to 2.5V (in steps of 100mV) for unidirectional (Bn to An) application with up to 100 MHz data speed and with Push-Pull input. We will provide programmable supply through DAC to Vref_A according output signal voltage requirement.

We are also looking device with minimum Propagation delay 1ns for 100 MHz data speed applications.

The parts suggested TXV0106 and AVC4T245 do not support lower voltages (as 0.8V - 1.1V) as required for our application and Pd (Max) is also looking high.

We have seen the part SN74AXC4T774 which is looking suitable for our application, but Propagation delay (Pd) is given for Min and Max values not Typical values. How can we calculate Pd for Typical values.

Please suggest any suitable part as per our requirements..

Best regards

  • Hi Ishwar,

    It will be a challenge to meet the 100MHz requirement at 0.8V ( there are no immediate solutions provided today), however there is the AVC4T245 that can achieve this data rate at the 2.5V to 3.3V corner using this FAQ. The tpd max for this voltage corner would also be 3.6ns. 

    Regards,

    Jack