Product Overview: CD74HCT4094MT from Texas Instruments

The CD74HCT4094MT is a high-speed silicon-gate CMOS 8-stage shift-and-store bus register designed and manufactured by the renowned electronics company, Texas Instruments. This integrated circuit is part of the HCT family, which is compatible with TTL logic levels and is known for its low power consumption and high noise immunity. The CD74HCT4094MT is optimized for use in a wide variety of applications ranging from signal processing to data storage and transfer.

This device features an 8-bit serial-in, parallel-out shift register that also includes a storage register and 3-state outputs. The shift register and storage register have separate clocks. Data is shifted on the positive-going transitions of the SH_CP (shift clock) input while the storage register is updated during a positive-going transition of the ST_CP (storage clock) input. If both clocks are connected together, the shift register is always one clock pulse ahead of the storage register.

The 3-state outputs allow for connection to a bus-organized system. They can drive up to 15 LSTTL loads when in the active state. When the output enable (OE) input is high, the outputs are in a high impedance state, which effectively isolates the bus lines.

Key features of the CD74HCT4094MT include:

• High noise immunity characteristic of CMOS devices
• Typical shift frequency of 29 MHz
• Low power consumption: 20 µA max ICC
• Wide operating voltage range of 4.5V to 5.5V
• Low input current of 1 µA max
• Functionally similar to the HC4094

The device comes in a surface-mount package, specifically in an SOIC (Small Outline Integrated Circuit) form factor, making it suitable for automated assembly processes and compact electronic assemblies.

With its combination of high-speed operation, low power consumption, and robust interface capabilities, the CD74HCT4094MT is an excellent choice for designers looking to implement efficient and reliable digital logic systems. Whether used in digital signal processing, data acquisition systems, or communication interfaces, the CD74HCT4094MT by Texas Instruments provides a versatile and high-performance solution.