Description
The HD74HC673 is a 16-bit shift register and a 16-bit storage register in a single 24-pin package. A three-state input/output (data I/O) port to the shift register allows serial entry and/or reading of data. The storage register is connected in a parallel data loop with the shift register and may be asynchronously cleared by taking the store-clear input low. The storage register may be parallel loaded with shift-register data to provide shift-register status via the parallel outputs. The shift register can be parallel loaded with the storage-register data upon command.

Features
• High Speed Operation: tpd (MODE/STRCLK to Y) = 23 ns typ (CL = 50 pF)
• High Output Current: Fanout of 15 LSTTL Loads (Q15 output)
• Wide Operating Voltage: VCC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)