JPH0434010U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is an electrical connection diagram of a single-ended type totem pole type transistor push-pull output buffer circuit of a semiconductor integrated circuit according to this invention, and Fig. 2 is an electrical connection diagram of a conventional transistor push-pull output buffer circuit. . In the figure, 1 is the input part of the push-pull output buffer circuit, 2 is the input part of the transistor, 3 and 4 are target connection transistors of the push-pull output buffer circuit, and 5 is a common connection on both sides of each symmetrical transistor 3 and 4 of the output buffer circuit. , 6 is an output load terminal portion of the output buffer circuit, 7 is a Zener diode, and 8 is a tunnel diode. In the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A semiconductor integrated circuit that causes load current to flow out and flow from a point on the common connection on both sides of a push-pull connection circuit of transistors that operate symmetrically and in opposite phases with the same input signal and are paired to obtain a differential output. In the single-ended totem-pole transistor push-pull output buffer circuit that constitutes a part of the circuit, there is a A Zener diode connected to a parallel two-terminal circuit so that the collector is on the cathode side, and a tunnel having negative resistance characteristics that is connected in series with an output load terminal so that the cathode side terminal of the Zener diode is on the cathode side. A semiconductor integrated circuit characterized by being provided with a diode.