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SN74AXC4T245: operating frequency (max)

takuya ikeda
Prodigy 80 points
Part Number: SN74AXC4T245

Could you tell me the operating frequency (max) for the following voltages ?

1.VCCA : +1.2 [V] / VCCB : +1.2 [V]

　A port -> B port 

　B port -> A port 

2.VCCA : +1.2 [V] / VCCB : +0.9 [V]

　A port -> B port

　B port -> A port

  • 0
    TI__Mastermind 29775 points

    Hi Takuya-San,

    I have verified 1.2V Left right arrow3.3V for up to 120MHz in the past using the AXC EVM. The voltage nodes in question would be similar per the 1.2V node. While I would further recommend for customer to also test with the EVM per their system/loading requirements, could you help clarify the target data rate? Thanks.

    Best Regards.

    Michael.

  • 0 in reply to Michael Ikwuyum
    Prodigy 80 points

    Thank you for your reply.

    I don't have time to test with EVM,now.

    I have  additional questions.

    1. Are there operating frequency specs?

    For example , 

    - 380 Mbps (1.8-V to 3.3-V Translation)
    - 200 Mbps (< 1.8-V to 3.3-V Translation)
    - 200 Mbps (Translate to 2.5 V or 1.8 V)
    - 150 Mbps (Translate to 1.5 V)
    - 100 Mbps (Translate to 1.2 V)

    2. If not , Is there a calculation method that can be used as a guideline for the operating frequency?

      For example, is it possible to calculate the reciprocal of twice "tpd" as a guideline for the operating frequency?

      I want to use this device for clock signal level conversion.

    Best Regards.

  • 0 in reply to takuya ikeda
    TI__Mastermind 29775 points

    Hi Takuya-San,

    Unfortunately, the EVM would be the recommended guideline, thanks.

    Best Regards.

    Michael.