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发明授权
US5045724A Circuit for limiting the short circuit output current 失效
用于限制短路输出电流的电路

Circuit for limiting the short circuit output current
摘要：
A TTL gate (22) includes a current generating circuit (24) comprising an NPN transistor (30) having its base coupled to a diode (24) and its emitter coupled to one of the gate's output transistors (14). Transistor (30) enables diode (24) to deliver a high current of short duration to the output OUT responsive to a low-to-high output transition. The current provides low-to-high output transition while protecting output transistor (14) from damaging currents caused by a short circuit at output OUT.
摘要（中）：

TTL门（22）包括电流产生电路（24），其包括其基极耦合到二极管（24）的NPN晶体管（30），并且其发射极耦合到栅极的输出晶体管（14）之一。 晶体管（30）使得二极管（24）能够响应于低到高的输出转变而向输出端OUT输送高电流的短时间。 该电流提供低到高的输出转换，同时保护输出晶体管（14）免于在输出OUT处由短路引起的损坏电流。

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