Electronics Engineering · Digital Electronics - TTL
In Transistor-Transistor Logic (TTL) circuits, what is a key purpose of using an external pull-up resistor at an open-collector output?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1To establish a valid high logic level, thereby improving noise immunity.✓
- 2To dynamically increase the fan-out capability to infinity.
- 3To minimize the dynamic power consumption of the active switching state.
- 4To provide AC biasing for independent linear amplification.
Correct answer
To establish a valid high logic level, thereby improving noise immunity.
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