Texas Instruments

CD74HCT194E

CD74HCT194E Description

The CD74HCT194E from Texas Instruments is a high-speed 4-bit bidirectional universal shift register designed for versatile data handling in digital systems. Housed in a 16-DIP package, this through-hole-mounted IC operates within a 4.5V to 5.5V supply range, making it compatible with standard 5V TTL logic levels. As part of the 74HCT series, it combines CMOS technology with TTL compatibility, ensuring low power consumption while maintaining robust noise immunity. Its universal functionality supports parallel loading, serial shifting (left or right), and synchronous operation, enabling flexible integration into complex logic circuits.

CD74HCT194E Features

• Bidirectional Operation: Supports both left and right shift directions, enhancing data flow control.
• Universal Functionality: Combines parallel load, serial shift, and hold modes for versatile applications.
• TTL-Compatible Inputs/Outputs: Ensures seamless interfacing with TTL logic families.
• Wide Voltage Range (4.5V–5.5V): Stable performance across typical 5V systems.
• Low Power Consumption: Leverages HCT technology for efficient power use.
• Robust Packaging: 16-DIP through-hole design for reliable prototyping and production.
• Compliance: ROHS3 and REACH Unaffected, meeting environmental standards.

CD74HCT194E Applications

Ideal for systems requiring dynamic data manipulation, the CD74HCT194E excels in:

• Serial-to-Parallel/Parallel-to-Serial Conversion: Used in communication interfaces (e.g., UART, SPI).
• Data Storage/Transfer: Embedded in FIFO buffers, memory addressing, and register files.
• Arithmetic Operations: Facilitates shift-and-add algorithms in multipliers.
• Industrial Control Systems: Timing circuits, sequence generators, and state machines.
• Retro Computing/DIY Electronics: Popular in legacy system repairs and educational projects due to its DIP packaging.

Conclusion of CD74HCT194E

The CD74HCT194E stands out for its bidirectional versatility, TTL/CMOS compatibility, and low-power operation, making it a preferred choice for designers needing reliable shift register functionality. Its universal feature set and ease of integration cater to both industrial and hobbyist applications, while compliance with ROHS3 ensures environmental safety. For projects demanding flexible data handling or retro-compatibility, this IC delivers a robust, future-proof solution.