Semiconductor Integrated circuit device for handling low amplitu

Details Semiconductor Integrated circuit device for handling low amplitu Semiconductor Integrated circuit device for handling low amplitu

1996-07-03

1998-09-01

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327 77, 327 96, 327162, 327 88, 326 81, 36518905, H03K 5135, H03K 190185

Patent

active

058015540

ABSTRACT:
A semiconductor integrated circuit device is provided having a low-amplitude input/output interface for inputting or outputting an input/output signal synchronously with a clock signal and transferring the input/output signal with an amplitude corresponding to a power supply voltage to or from an external command unit. A first differential circuit to be practically continuously operated is used as an input circuit for receiving a clock signal supplied from an external clock unit. In addition, a second differential circuit is provided which is intermittently operated in accordance with the clock signal to sample an input signal in accordance with an internal clock signal generated by the first differential circuit while the second differential circuit is operated and holds the sampled signal while the second differential circuit is not operated. This second differential circuit is used as an input circuit for receiving a low-amplitude input signal inputted synchronously with the clock signal.

REFERENCES:
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patent: 5268872 (1993-12-01), Fujii et al.
patent: 5285115 (1994-02-01), Tsuji
B. Gunning et al., "WP 3.7: A CMOS Low-Voltage-Swing Transmission-Line Transceiver", ISSCC 92/ Session 3/ High-Performance Circuits/ Paper WP 3.7, 1992 IEEE Int'I Solid-State Circuits Conference, pp. 58-59.

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