公开(公告)号：US20170292993A1

公开(公告)日：2017-10-12

申请号：US15479310

申请日：2017-04-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： DOO-SEOK YOON ,  MIN-SU KIM ,  CHUNG-HEE KIM ,  DAE-SEONG LEE ,  HYUN LEE ,  MATTHEW BERZINS ,  JAMES LIM

IPC: G01R31/3177 ,  G01R31/317 ,  H03K3/037

CPC classification number: G01R31/3177 ,  G01R31/31723 ,  G01R31/31725 ,  G01R31/318541 ,  H03K3/0372

Abstract: A multi-bit flip-flop includes: a single scan input pin to receive a scan input signal, a plurality of data input pins to receive first and second data input signals, a first scan flip-flop to select one of the scan input signal and the first data input signal as a first selection signal in response to a scan enable signal and to latch the first selection signal to provide a first output signal, a second scan flip-flop to select one of an internal signal corresponding to the first output signal and the second data input signal as a second selection signal in response to the scan enable signal and to latch the second selection signal to provide a second output signal, and a plurality of output pins to output the first and second output signals, wherein scan paths of the first and second scan flip-flops are connected to each other.