• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 19 subscribers
  • Views 215 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

SN74LV1T86: About power consumption questions...

Peter Tseng
Genius 5910 points
Part Number: SN74LV1T86
Other Parts Discussed in Thread: TXU0101, SN74LXC1T45

Dear Sirs,

May I have your comments for the below questions of SN74LV1T86?

The Vcc =5V, input A=3.3V, and input B=5V, output Y=0V.

1. As customer spec. the Max. Icc should be 1.5mA, right?

2. if customer wants to get as small as possible of current, such as 1uA, how to do it? Should the Vin be the same as Vcc or GND?

All concerns are for the whole system's power consumption, if our understanding is wrong, please help to advise which parameter we should pay attention to.

Thanks. 

  • 0
    Guru 276380 points

    1. Yes, the worst-case current is 1.5 mA. However, the typical current is much lower; the left curve below shows the characteristics of an LV1T input with a 5.0 V supply:

    (Ignore the right curve; it's for devices without level shifting.)

    2. If you care about the worst case, you indeed need an input signal near VCC. This might require a level shifter with two supplies, e.g., TXU0101, SN74LXC1T45.