• State Resolved
  • Locked Locked
  • Replies 6 replies
  • Subscribers 33 subscribers
  • Views 1425 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.

SN75175 output terminal

NAOKI AOYAMA
Guru 11215 points
Other Parts Discussed in Thread: SN75175, SN74LS240

Hello,

Our customer uses the SN75175.

The customer wants to know the absolute maximum ratings about output terminal.

It is mentioned the Low-level output current on the datasheet. But there is no data of

output voltage.

How about the output terminal voltage of  absolute maximum ratings?

Best Regards,

Naoki Aoyama

  • 0
    Guru 300440 points

    As shown on page 4 of the datasheet, the output voltage is guaranteed to be below 0.5 V when sinking 16 mA.

    Any output current of more than 16 mA is outside the recommended operating conditions, so in that case, the device would not be guaranteed to work at all. Even if it works, the output transistor (see p. 2) might no longer be saturated, so when sinking 50 mA, VOL could be as high as VCC.

  • 0 in reply to Clemens Ladisch
    Guru 11215 points
    Hello,

    Thank you for your reply.
    I want to know the apply voltage from external.

    ex) from -0.5V to Vcc+0.5V
    Is there any absolute maximum ratings of the output terminal?
    Regards,

    Naoki Aoyama
  • 0 in reply to NAOKI AOYAMA
    Guru 300440 points

    The output equivalent schematic looks like a typical (L)S-TTL output without ESD protection diodes. The maximum rating would then be the transistors' emitter/base breakdown voltage, which probably is 5.5 V (taken from the SN74LS240 datasheet; that device might or might not have the same characteristics).

    I doubt that you will be able to get an official specification.

  • 0 in reply to Clemens Ladisch
    Guru 11215 points
    Hello,
    Thank you for your reply.
    I will refer to the SN74LS240.

    Thanks,
    Naoki Aoyama
  • 0
    TI__Guru**** 157796 points
    Naoki,

    The output should not go below ground by more than 0.3V
    The maximum positive voltage is 5.5V
  • 0 in reply to Ron Michallick
    Guru 11215 points
    Hello Ron,

    Thank you for your reply.
    I understood the maximum voltage is -0.3V and +5.5V.

    Thanks,
    Naoki Aoyama