Product Overview: SN74AHCT158DR by Texas Instruments

The SN74AHCT158DR is a high-performance, quad 2-line to 1-line data selector/multiplexer from Texas Instruments, designed to operate within a voltage range of 4.5V to 5.5V. This integrated circuit is part of the AHCT family, which is characterized by its high-speed CMOS functionality with TTL-compatible inputs, making it suitable for interfacing with TTL logic levels.

Key Features

• Logic Type: 2-1 Data Selector/Multiplexer
• Number of Circuits: 4
• Output Type: Non-Inverted
• Propagation Delay Time: 11ns (Max) at 5V
• Operating Temperature: -40°C to 85°C
• Mounting Type: Surface Mount
• Package: SOIC-16

The device features a common output enable (OE) input, which when held high, forces the outputs to the high-impedance state. This feature allows for the outputs to be disconnected from the bus lines or other output lines, preventing any potential back driving.

The SN74AHCT158DR's design ensures minimal power consumption, with a typical ICC low power consumption of 8 µA. It also provides a high noise immunity characteristic of CMOS devices, while maintaining the speed of TTL devices. The balanced propagation delays and transition times across all input and output combinations offer reliable and predictable performance, which is essential for timing-critical applications.

Each multiplexer has two select inputs (A and B), four data inputs (I0 to I3), and one output (Y). The select inputs determine which data input is connected to the output. This device is ideal for multiplexing digital signals, such as address and data information in microprocessor or microcontroller-based systems, where data routing is necessary.

The SN74AHCT158DR comes in a slim SOIC-16 package, which is suitable for automated pick-and-place assembly processes, and its surface-mount design makes it a good fit for compact PCB layouts. Its robust design ensures reliable operation in a wide range of electronic applications, from consumer electronics to industrial automation systems.

With its combination of speed, low power, and high noise immunity, the SN74AHCT158DR from Texas Instruments is an excellent choice for designers looking for a versatile and efficient data selector/multiplexer for their digital systems.