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US 7,746,140 B2Granted
Scannable latch
AssigneeInternational Business Machines Corporation
InventorsSang Hoo Dhong, Joel A. Silberman, Osamu Takahashi
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Abstract
A scannable latch is disclosed. The scannable latch includes a dynamic circuit, two cross-coupled NAND gates coupled to the dynamic circuit, and a pair of stacked transistors coupled to the dynamic circuit. One of the stacked transistors is for receiving data signals, and the other stacked transistors is for receiving scan in signals.
Claims7
A scannable latch comprising:
- a dynamic circuit;
- a first latch for providing a data out signal from a data in signal;
- and
- a second latch having two NAND gates coupled to said dynamic circuit and a pair of transfer gates coupled to said two NAND gates for providing a scan out signal from a scan input signal.
1 more element
Dependencies are inferred from the claim text.