Datasheet Texas Instruments CD74HC40105 — 数据表

[ /Title
(CD74
HC401
05,
CD74
HCT40
105)
/Subject
(High
Speed
CMOS CD54HC40105, CD74HC40105,
CD54HCT40105, CD74HCT40105
Data sheet acquired from Harris Semiconductor
SCHS222C High-Speed CMOS Logic
4-Bit x 16-Word FIFO Register February 1998 -Revised October 2003 Features Description Independent Asynchronous Inputs and Outputs The ’HC40105 and ’HCT40105 are high-speed silicon-gate
CMOS devices that are compatible, except for “shift-out”
circuitry, with the CD40105B. They are low-power first-in-out
(FIFO) “elastic” storage registers that can store 16 four-bit
words. The 40105 is capable of handling input and output
data at different shifting rates. This feature makes it
particularly useful as a buffer between asynchronous
systems. Expandable in Either Direction Reset Capability Status Indicators on Inputs and Outputs Three-State Outputs Shift-Out Independent of Three-State Control Each work position in the register is clocked by a control flipflop, which stores a marker bit. A “1” signifies that the position’s data is filled and a “0” denotes a vacancy in that position. The control flip-flop detects the state of the preceding
flip-flop and communicates its own status to the succeeding …