• State TI Thinks Resolved
  • Locked Locked
  • Replies 2 replies
  • Answers 2 answers
  • Subscribers 34 subscribers
  • Views 189 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

NS16C2552: Input impedance value of receiver input

Go
Genius 4220 points
Part Number: NS16C2552

Hi,

Do you have any data of input impedance value of SIN1 and SIN2?

and SINx of this device have CMOS or TTL buffer? 

This thread is for NS16C2552, but it would be very appreciated if you could give me the same information above for PC16552.

Thanks,

Go

  • 0
    Guru 316920 points

    For both devices, all inputs are high-impedance CMOS inputs. (The PC16552 has TTL-compatible switching thresholds.)

    You could derive the input impedance from the input voltage and input leakage current (5 V / 10 µA = 500 kΩ). But the datasheet specifies only the leakage current because this is more useful for designing a circuit.

  • 0
    TI__Mastermind 47748 points

    Go,

    I agree with Clemens here. Both devices exhibit high-impedance CMOS inputs. 

    Input impedance can we calculated from the input voltage and input leakage current. 

    NS16C2552: 5V / 10uA = 500kohm 

    PC16552: 5.5V / 10uA = 550kohm

    Regards,

    Tyler