Invention Grant
- Patent Title: Logic circuits with reduced transistor counts
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Application No.: US18362938Application Date: 2023-07-31
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Publication No.: US12190034B2Publication Date: 2025-01-07
- Inventor: Chi-Lin Liu , Jerry Chang-Jui Kao , Wei-Hsiang Ma , Lee-Chung Lu , Fong-Yuan Chang , Sheng-Hsiung Chen , Shang-Chih Hsieh
- Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
- Applicant Address: TW Hsinchu
- Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
- Current Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
- Current Assignee Address: TW Hsinchu
- Agency: Hauptman Ham, LLP
- Main IPC: G06F30/327
- IPC: G06F30/327 ; G06F111/06 ; G06F119/18

Abstract:
A logic circuit (for providing a multibit flip-flop (MBFF) function) includes: a first inverter to receive a clock signal and generate a corresponding clock_bar signal; a second inverter to receive the clock_bar signal and generate a corresponding clock_bar_bar signal; a third inverter to receive a control signal and generate a corresponding control_bar signal; and a series-chain of 1-bit transfer flip-flop (TXFF) circuits, each including: a NAND circuit to receive data signals; and a 1-bit transmit gate flip-flop (TGFF) circuit to output signals Q and q, and receive an output of the NAND circuit, the signal q from the TGFF circuit of a preceding TXFF circuit in the series-chain, the clock_bar and clock_bar_bar signals, and the control and control_bar signals; and the first transfer TXFF circuit in the series-chain being configured to receive a start signal in place of the signal q from an otherwise preceding TGFF circuit.
Public/Granted literature
- US20230376661A1 LOGIC CIRCUITS WITH REDUCED TRANSISTOR COUNTS Public/Granted day:2023-11-23
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