View mc74hc259 datasheet:

MOTOROLA SEMICONDUCTOR TECHNICAL DATA MC54/74HC259 8-Bit Addressable Latch 1-of-8 Decoder High–Performance Silicon–Gate CMOS J SUFFIX CERAMIC PACKAGE The MC54/74HC259 is identical in pinout to the LS259. The device inputs 16 CASE 620–10 are compatible with standard CMOS outputs; with pullup resistors, they are 1 compatible with LSTTL outputs. The HC259 has four modes of operation as shown in the mode selection N SUFFIX table. In the addressable latch mode, the data on Data In is written into the PLASTIC PACKAGE 16 addressed latch. The addressed latch follows the data input with all CASE 648–08 non–addressed latches remaining in their previous states. In the memory 1 mode, all latches remain in their previous state and are unaffected by the D SUFFIX Data or Address in