74ACT323

74ACT323 8-Bit Universal Shift/Storage Register with Synchronous Reset and Common I/O Pins June 1988 Revised October 1998 74ACT323 8-Bit Universal Shift/Storage Register with Synchronous Reset and Common I/O Pins General Description The ACT323 is an 8-bit universal shift/storage register with 3-STATE outputs. Parallel load inputs and flip-flop outputs are multiplexed to minimize pin count. Separate serial inputs and outputs are provided for Q0 and Q7 to allow easy cascading. Four operation modes are possible: hold (store), shift left, shift right and parallel load. Features s ICC and IOZ reduced by 50% s Common parallel I/O for reduced pin count s Additional serial inputs and outputs for expansion s Four operating modes: shift left, shift right, load and store s 3-STATE outputs for bus-oriented applications s Outputs source/sink 24 mA s TTL-compatible inputs Ordering Code: Order Number 74ACT323PC Package Number N20A Package Description 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code. Logic Symbols Connection Diagram Pin Assignment for DIP Pin Descriptions Pin Name CP DS0 DS7 S0, S1 SR OE1, OE2 I/O0–I/O7 Description Clock Pulse Input Serial Data Input for Right Shift Serial Data Input for Left Shift Mode Select Inputs Synchronous Reset Input 3-STATE Output Enable Inputs Multiplexed Parallel Data Inputs or 3-STATE Parallel Data Outputs Q0, Q7 FACT™ ...