74HCT194D,653

Shift Registers Overview

The NXP USA Inc. 74HCT194D,653 is a single 4-bit universal shift register belonging to the HCT logic family. It supports serial-in/parallel-out and parallel-in/serial-out configurations with bidirectional shifting capabilities controlled by mode select inputs. The device operates within a supply voltage range of 4.5 V to 5.5 V and features standard TTL-compatible inputs. It is housed in a 16-pin SO package designed for surface-mount applications.

Shift Registers Feature Summary

• Universal shift functionality supporting left, right, and parallel data loading modes
• TTL-compatible input levels enabling direct interfacing with standard logic circuits
• Bidirectional serial data shifting capability via dedicated input pins

Shift Registers Applications

• Data storage and buffering in digital systems
• Serial-to-parallel and parallel-to-serial conversion interfaces
• General-purpose shift register operations in control logic

Shift Registers Procurement Notes

Verify the specific suffix '653' against official Nexperia/NXP documentation to confirm tape-and-reel packaging specifications. Ensure compatibility with existing 16-SOIC footprints during procurement planning. Confirm RoHS compliance status through current manufacturer declarations prior to ordering.

Shift Registers Selection Notes

Select this component when TTL-level interface compatibility is required alongside high-speed CMOS performance characteristics. The HCT series ensures noise immunity suitable for industrial environments. Verify that the 16-pin SO package dimensions align with the target PCB layout constraints before finalizing the design.

Shift Registers Part Context

This part belongs to the widely adopted 74HCT logic family, bridging the gap between older TTL standards and modern CMOS technologies. The 74HCT194 variant specifically provides versatile data manipulation functions essential for sequential logic designs. It represents a standard solution for bit-shifting requirements in embedded hardware architectures.

Shift Registers Replacement Considerations

Cross-reference with other manufacturers offering pin-compatible 74HCT194 devices in 16-SO packages. Verify electrical parameter equivalence, particularly propagation delay and output drive strength, to ensure seamless integration without circuit modification.