TTL output stages Which TTL output structure is commonly referred to as a “totem-pole” arrangement?

Introduction / Context:
TTL logic families use specific output stage topologies to achieve low output impedance and fast transitions. One of the most recognized forms is the totem-pole output.

Given Data / Assumptions:

• Standard TTL outputs often use a push-pull (active pull-up and active pull-down) stack of transistors.
• This stack is colloquially named “totem-pole.”

Concept / Approach:
A totem-pole stage places two active devices in series between VCC and ground, one sourcing during HIGH, the other sinking during LOW. This yields low Rout and fast edges, unlike open-collector which requires an external pull-up.

Step-by-Step Solution:
Identify options: only one is an established TTL output term—“totem-pole.”Select it as the correct descriptor of the push-pull TTL output.

Verification / Alternative check:
TTL datasheets (e.g., 74LSxx) describe outputs as totem-pole (standard) or open-collector variants.

Why Other Options Are Wrong:
Diode arrangement: too vague; not the accepted output term.JBT arrangement: not a recognized TTL topology.Base, emitter, collector arrangement: generic transistor anatomy, not an output style.

Common Pitfalls:
Confusing totem-pole with open collector or tri-state; only totem-pole actively drives both directions (except in high-Z tri-state variants).

Final Answer:
totem-pole arrangement