Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Patent
1995-06-07
1997-04-08
Tran, Toan
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
327103, 327227, 3652335, H03K 5153, H03K 3033, G01R 2902
Patent
active
056191510
ABSTRACT:
A semiconductor memory device which includes at least one of (1) an input buffer circuit which generates internal address signals in response to an incoming address; (2) a decoder circuit formed of plural logic gates each of which is composed of the combination of MOS and bipolar circuitry; (3) a sense amplifier circuit including a multiemitter transistor; (4) a signal or address transition detector circuit which includes input circuits each receiving, for example, an address signal of a voltage amplitude and outputting a current amplitude signal in response to a change in level of the address signal, and a detector circuit connected thereto which has a cascode amplifier arranged such that it receives current amplitude signals at an input thereof and in which the cascode amplifier input is maintained at a substantially constant voltage, in which the detection circuit detects a transition of one or more of the current amplitude signals and, in response thereto, generates an ATD signal of a voltage amplitude; and (5) an output buffer circuit, in which the decoder, sense amplifier and output buffer of the device are controlled in accordance with signals from a clock generator, which is responsive to the ATD signal.
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Akioka Takashi
Gotou Nobuyuki
Hiraishi Atsushi
Ide Akira
Iwamura Masahiro
Hitachi , Ltd.
Tran Toan
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