Part # 74LS164 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: 54LS164 DM54LS164 DM74LS164 8-Bit Serial In Parallel Out Shift Registers

Part Details:

54LS164DM54LS164DM74LS164 June 1989 54LS164 DM54LS164 DM74LS1648-Bit Serial In Parallel Out Shift Registers General Description Features These 8-bit shift registers feature gated serial inputs and an Y Gated (enable disable) serial inputs asynchronous clear A low logic level at either input inhibits Y Fully buffered clock and serial inputs entry of the new data and resets the first flip-flop to the low Y Asynchronous clear level at the next clock pulse thus providing complete con- Y Typical clock frequency 36 MHz trol over incoming data A high logic level on either input Y Typical power dissipation 80 mW enables the other input which will then determine the state Y Alternate Military Aerospace device (54LS164) is avail- of the first flip-flop Data at the serial inputs may be changed able Contact a National Semiconductor Sales Office while the clock is high or low but only information meeting Distributor for specifications the setup and hold time requirements will be entered Clock-ing occurs on the low-to-high level transition of the clockinput All inputs are diode-clamped to minimize transmis-sion-line effects 8-Bit Connection Diagram Function Table Dual-In-Line Package Inputs Outputs Serial Clear Clock A B QA QB QH L X X X L L L H L X X QA0 QB0

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74LS164.pdf Datasheet