Octal inverting latch with tri-state — what it is and where it fits
The CD74HC533E is an octal D-type transparent latch with inverting outputs and tri-state output control. It operates on a 2V to 6V supply.
13 ns propagation delay — timing margin on a shared bus
The 13 ns propagation delay from LE to Q sets the bus timing budget. The 7.8 mA source/sink drive per output is typical for HC logic.
-55°C to 125°C — military temperature grade
The full -55°C to 125°C operating range puts this latch in the military-temperature cohort. That means it is rated for avionics, satellite, missile guidance, and downhole drilling equipment where the ambient can swing past what industrial-grade parts tolerate. The 20-pin plastic DIP (PDIP) package is through-hole — hand-solderable, socket-friendly, and mechanically robust in high-vibration environments if you stake it or conformal-coat it. If your board is reflow-only, you will want the surface-mount sibling (SOIC or SSOP variant) instead.
Active lifecycle — no LTB pressure
The CD74HC533E carries an Active lifecycle status with ROHS3 compliance.