Slkor 74HC595D
The 74HC595D is a high-speed Silicon Gate CMOS device, with pin compatibility with Low-Power Schottky TTL circuits(LSTTL). It complies with JEDEC standard no.7A. The 74HC595D consists of an 8-stage serial shift register with a storage register and tri-state outputs.FEATURES
● 8-bit serial input● 8-bit serial or parallel output
● Tri-state output register
● Shift register with direct clear
● Shift output frequency of 100MHz (typical)
● ESD protection function
APPLICATIONS
● Serial-to-parallel conversion● Remote control memory retention device
DESCRIPTION
● It complies with JEDEC standard no.7A. Theshift register and the storage register each have separate clocks.● Data is shifted on the rising edge of the shift clock (SH_CP), while transfer from the shift register to the storage register occurs on the rising edge of the storage clock (ST_CP). If both clocks are connected together, the dataon the shift register always leads the data on the storage register by one clock pulse.
● The shift register has a serial input (DS) and a serial output for cascading (Q7'), along with an asynchronous reset input (active low). The storage register features an 8-bit parallel bus driver output with tri-state outputs. When the output enable input (OE) is low, the outputs are in normal operation; conversely, when OE is high,the outputs are in a high-impedance state.