4-bit bidirectional shift register in SSOP-16
The NXP 74HC194DB,118 is a 4-bit bidirectional universal shift register from the 74HC series, offering parallel-in/parallel-out data handling with push-pull outputs.
The -40°C to +125°C operating range meets industrial temperature requirements, so the register holds its shift state across an unheated enclosure's thermal cycle. Push-pull outputs source and sink current directly, eliminating the need for external pull-up resistors on the data and Q lines. The single-element, 4-bit width matches common 4-bit data buses or can be cascaded for wider word lengths.
The surface-mount footprint is standard for 0.65 mm pitch SSOP-16 — no special soldering profile beyond typical reflow for lead-free assemblies. Supplier device package is 16-SSOP, identical to the package/case designation, so the land pattern in the datasheet matches the physical part without ambiguity.