3-State Buffer-Type Inverting Outputs Drive
Bus Lines Directly
Bus-Structured Pinout
Buffered Control Inputs
Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), Standard Plastic (N) and
Ceramic (J) 300-mil DIPs, and Ceramic Flat
W) Packages

description
These octal D-type edge-triggered flip-flops
feature inverting 3-state outputs designed
specifically for bus driving. They are particularly
suitable for implementing buffer registers, I/O
ports, bidirectional bus drivers, and working
registers.
The eight flip-flops enter data on the low-to-high
transition of the clock (CLK) input.
The output-enable (OE) input does not affect
internal operations of the flip-flops. Old data can
be retained or new data can be entered while the
outputs are in the high-impedance state.
The SN54ALS564B 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.