54ACT16952, 74ACT16952,pdf(16-

The 'ACT16952 are 16-bit registered transceivers that contain two sets of D-type flip-flops for temporary storage of data flowing in either direction. They can be used as two 8-bit transceivers or one 16-bit transceiver. Data on the A or B bus is stored in registers on the low-to-high transition of the clock (CLKAB or CLKBA) input, provided that the clock-enable ( or ) input is low. Taking the output-enable ( or ) input low accesses the data on either port. To avoid false clocking of the flip-flops, (or ) should not be switched from low to high while CLKAB (or CLKBA) is low.

The 74ACT16952 is packaged in TI's shrink small-outline package, which provides twice the I/O pin count and functionality of standard small-outline packages in the same printed-circuit-board area.