74HC595D

74HC595D is the SOP-16 ordering code for the JSMSEMI 74HC595D serial-in, parallel-out shift register, a variant aimed at LED display driving rather than general logic expansion. Per the JSMSEMI datasheet it runs from a 3.0 V to 5.5 V supply (nominal 5.0 V) over a -20 °C to +80 °C ambient range, with input high level of 3.2 V minimum and input low level of 1.8 V maximum at a 5 V supply, output high level of 4.9 V minimum, quiescent current of 1 µA maximum in the datasheet table, and a maximum clock frequency above 25 MHz. The critical selection point is the pinout: this JSMSEMI variant assigns its pins differently from the standard 74HC595 arrangement - pins 10 and 13 are no-connects, there are no master-reset or output-enable pins, and the clock pins are named SCK and RCK - so it must never be treated as a like-for-like replacement for the Nexperia 74HC595D,118 also listed in this catalog, and any substitution has to be checked pin by pin against both datasheets first. Selection advice: choose this code for LED display panels designed around the JSMSEMI pin assignment, and quote the manufacturer name together with the code, since the same 74HC595D name is sold by several vendors with different pinouts. Parameters verified against the JSMSEMI 74HC595D datasheet.