CD74HCT251M High-Speed CMOS Logic 8-Input Multiplexer

The CD74HCT251M is a high-performance, CMOS logic 8-input multiplexer with 3-state output from Texas Instruments designed to operate in a broad range of applications. This integrated circuit is part of the HCT family, which is compatible with high-speed TTL (Transistor-Transistor Logic) and offers a significant advantage in power consumption and speed over its counterparts.

Featuring a wide operating voltage range from 4.5V to 5.5V, the CD74HCT251M provides the flexibility needed for use in various digital systems. With its low power consumption, it is ideal for battery-operated and power-sensitive applications. The multiplexer allows one of eight inputs to be selected and output via a 3-state buffer, which is essential for interfacing with bus-oriented systems due to its ability to go into a high-impedance state, thus preventing bus contention.

The device's control inputs include two select inputs (S0 and S1) and an enable input (E\), which together control the data selection and the output state. When the enable input is high, the output goes into the high-impedance state, regardless of the select inputs. This feature is particularly useful for creating larger multiplexers by tying outputs together from multiple devices without the risk of current flowing back into the device.

The CD74HCT251M is available in a compact SOIC-16 package, making it suitable for space-constrained applications. It also boasts a robust latch-up performance, which exceeds 250mA per JESD 17, providing a reliable performance in harsh electrical environments. Additionally, the device has a high noise immunity characteristic of CMOS devices, ensuring stable operation in the presence of electrical noise.

Overall, the CD74HCT251M from Texas Instruments is a versatile and reliable component for digital multiplexing needs. It is widely used in data transmission, control systems, computer logic, and any application where low power, high speed, and effective data routing are required.

For detailed specifications, datasheets, and application notes, visit the Texas Instruments official website or contact their support for technical assistance.