Features: • 3-State Buffer-Type Inverting Outputs DriveBus-Lines Directly• Bus-Structured Pinout• Buffered Control Inputs• Package Options Include Plastic Small Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs• Dependable Texas In...
SN54ALS564A: Features: • 3-State Buffer-Type Inverting Outputs DriveBus-Lines Directly• Bus-Structured Pinout• Buffered Control Inputs• Package Options Include Plastic Small Outline Packa...
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Features: PinoutSpecificationsDescriptionThe SN54/74LS147 and SN54/74LS148 are Priority Encoders. ...
PinoutDescriptionThe LS155 and LS156 are Dual 1-of-4 Decoder/Demultiplexers with common Address in...

These 8-bit registers feature inverting 3-state outputs of SN54ALS564A designed specifically for bus driving. Theyare particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
The 8-bit edge-triggered D-type flip-flops enter data on the low-to-high transition of the clock. The output of SN54ALS564A control does not affect the internal operation of the flip-flops. Old data of SN54ALS564A can be retained or new data can be entered while the outputs are in the high-impedance state.
The SN54ALS564A is characterized for operation over the full military temperature range of 55°C to 125°C. The SN74ALS564B is characterized for operation from 0°C to 70°C.