Active lifecycle — no BOM risk for new builds
The SN74ACT534PW: ROHS3 compliant, so it clears EU and global regulatory gates without exemption paperwork.
8-bit D-Type with tri-state inverted bus drive
A single-element 8-bit positive-edge-triggered D-Type flip-flop. The outputs are tri-state and inverted — meaning when the output-enable is asserted, the bus sees the complement of the stored data; when de-asserted, the outputs go high-impedance and the bus floats. This is useful for shared data buses where multiple devices drive the same lines and you need bus isolation without external buffer gates. Runs on a 4.5V to 5.5V supply — this is a 5V logic family, not 3.3V. If your system rail is 3.3V, this part needs a level translator or a separate 5V supply. Clock frequency is 100 MHz, with a max propagation delay of 11.5 ns at 5V into a 50 pF load. That delay sets the timing budget for the data-to-output path — at 100 MHz the clock period is 10 ns, so the 11.5 ns delay means the output arrives after the next clock edge unless you pipeline or use a slower clock. For most 8-bit register applications below 50 MHz, the margin is comfortable.
Industrial temperature range and 24 mA drive
This covers factory-floor PLC cabinets, outdoor telecom shelters, and engine-bay-adjacent enclosures where the ambient stays below 85°C. Output drive is 24 mA source and sink — enough to drive a bus line, an LED indicator, or a downstream gate input without a separate buffer. The tri-state control lets you share the bus with other devices without contention. Input capacitance is 4.5 pF per input — light enough that the upstream driver sees a small load, which helps maintain signal integrity on a backplane or long PCB trace at 100 MHz. Quiescent current is 4 µA — negligible in a system that already draws milliamps for the rest of the logic. Not a low-power part by design, but the standby draw won't trouble a 5V rail.
20-TSSOP — fine-pitch surface-mount footprint
The supplier device package is 20-TSSOP — same mechanical outline. This is a fine-pitch SMD; the 0.65 mm pitch requires a PCB with soldermask-defined pads and a stencil aperture that matches the land pattern. Surface-mount only — no through-hole variant exists for this order code. The tube packaging means it ships in anti-static tubes, not tape-and-reel, so pick-and-place lines need tube feeders or a transfer to tape.