74F322

74F322 Octal Serial/Parallel Register with Sign Extend April 1988 Revised April 1999 74F322 Octal Serial/Parallel Register with Sign Extend General Description The 74F322 is an 8-bit shift register with provision for either serial or parallel loading and with 3-STATE parallel outputs plus a bi-state serial output. Parallel data inputs and parallel outputs are multiplexed to minimize pin count. State changes are initiated by the rising edge of the clock. Four synchronous modes of operation are possible: hold (store), shift right with serial entry, shift right with sign extend and parallel load. An asynchronous Master Reset (MR) input overrides clocked operation and clears the register. Features s Multiplexed parallel I/O ports s Separate serial input and output s Sign extend function s 3-STATE outputs for bus applications Ordering Code: Order Number 74F322PC Package Number N20A Package Description 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbols Connection Diagram IEEE/IEC © 1999 Fairchild Semiconductor Corporation DS009516.prf www.fairchildsemi.com 74F322 Unit Loading/Fan Out U.L. Pin Names RE S/P SE S D 0 , D1 CP MR OE Q0 I/O0–I/O 7 Description HIGH/LOW Register Enable Input (Active LOW) Serial (HIGH) or Parallel (LOW) Mode Control Input Sign Extend Input (Active LOW) Serial Data Select Input Serial Data Inputs Clock Pulse ...