These octal D-type edge-triggered flip-flops feature 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.
These flip-flops enter data on the low-to-high transition of the
clock (CLK) input.
The output-enable ()
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
The SN54ALS576B and SN54AS576 are characterized for operation over
the full military temperature range of -55°C to 125°C. The
SN74ALS576B, SN74ALS577A, and SN74AS576 are characterized for
operation from 0°C to 70°C.