The UPD74HC4094C is an 8-stage shift-and-store bus register manufactured by NEC (now Renesas). It belongs to the 74HC series of high-speed CMOS logic devices, which are known for their low power consumption and high noise immunity. This specific part is designed for applications where serial-to-parallel data conversion and storage are required.

Applications

• LED displays
• Remote control systems
• Industrial control systems
• Data acquisition systems
• Instrumentation

Features

• 8-stage shift register
• Serial-to-parallel data conversion
• 3-state outputs
• Separate shift and store clocks
• Cascadable for longer shift registers
• High noise immunity
• Low power consumption

Benefits

• Simplifies the control of multiple devices from a single data line
• Reduces the number of I/O pins required on a microcontroller
• Allows for easy expansion to handle larger data sets
• Provides reliable operation in noisy environments
• Conserves power in battery-operated applications

Additional Details

The UPD74HC4094C typically operates with a supply voltage of 2V to 6V. It has a propagation delay of around 15ns, depending on the operating voltage and load capacitance. The outputs can drive up to 10 LSTTL loads. The package is typically a DIP (Dual In-line Package) or SOIC (Small Outline Integrated Circuit). The device is controlled by three input signals: Serial Data Input (SER), Shift Clock Input (SHCP), and Store Clock Input (STCP). Data is shifted into the register on the rising edge of the SHCP signal. The data is then transferred to the output latches on the rising edge of the STCP signal. The 3-state outputs allow for easy connection to a bus. The device is commonly used in applications where data needs to be transferred serially over a long distance or where the number of I/O pins is limited. The 74HC series offers a wide range of logic functions, making it a versatile choice for digital circuit design. Detailed electrical characteristics, timing diagrams, and package dimensions are available in the NEC/Renesas product datasheet.