STMicroelectronics 74LCX138MTR Low Voltage 3-to-8 Line Decoder/Demultiplexer

The 74LCX138MTR is a high-performance, low-voltage 3-to-8 line decoder/demultiplexer integrated circuit from STMicroelectronics, designed for use in applications that require efficient and reliable decoding or demultiplexing of digital signals. This device is part of the LCX family which is known for its low power consumption and high-speed operation.

This particular IC is capable of converting three binary input signals to eight mutually exclusive outputs. The outputs are active LOW, meaning that when a binary code is applied to the inputs, the corresponding output pin will go LOW while the others remain HIGH. The 74LCX138MTR is optimized for use in 3.3V systems but can also operate with a 2.5V power supply, making it versatile for various low-voltage applications.

The device features a 5V tolerant input, which allows for interface flexibility with 5V systems without the need for additional level shifting. This is particularly useful in mixed-voltage environments and aids in the integration of the device into legacy systems that operate at higher voltages.

Due to its advanced silicon-gate CMOS technology, the 74LCX138MTR offers superior performance with a significantly reduced power consumption compared to traditional TTL logic. It provides a high drive capability with an output drive of 24mA at 3.3V, which is ideal for driving heavy loads or for use in bus-oriented systems.

Additional features of the 74LCX138MTR include the following:

• Power-down high impedance inputs and outputs
• Support for live insertion and withdrawal (partial power-down)
• Implementation of patented noise/EMI reduction circuitry
• Latch-up performance that exceeds 500mA
• ESD protection that exceeds JESD 22

The 74LCX138MTR is available in a TSSOP16 package, which is suitable for surface-mount technology (SMT) and is ideal for space-constrained applications. Its small footprint and low profile make it a preferred choice for compact and integrated designs. This device is commonly used in high-speed data processing systems, telecommunications, consumer electronics, and any application where efficient decoding of digital signals is required.

With its combination of high-speed operation, low power consumption, and enhanced protection features, the STMicroelectronics 74LCX138MTR is a robust solution for modern digital decoding tasks.