SN74LVC138ADRE4

The SN74LVC138ADRE4 is a high-performance, low-voltage, 3-to-8 line decoder/demultiplexer from Texas Instruments. It is designed to operate with a supply voltage range of 1.65V to 5.5V, making it suitable for a variety of digital logic applications, particularly in low-power environments.

Key Features:

1. Functionality: The SN74LVC138A takes three binary inputs (A0, A1, A2) and decodes them into one of eight active low outputs (Y0 to Y7). When the inputs are in a specific combination, the corresponding output goes low, while all other outputs remain high.

2. Enable Inputs: The device includes two enable inputs (G1, G2A, and G2B) that control the operation of the decoder. When the enable inputs are not activated, all outputs are in a high-impedance state, effectively disabling the device.

3. Logic Levels: The SN74LVC138A is compatible with both TTL and CMOS logic levels, making it versatile for interfacing with various digital circuits.

4. Propagation Delay: The device features a fast propagation delay, typically around 4.5 ns at 3.3V, allowing for high-speed applications.

5. Power Consumption: With low static power consumption, the SN74LVC138ADRE4 is ideal for battery-operated devices and other applications where power efficiency is critical.

6. Temperature Range: The device operates over a wide temperature range, from -40°C to +125°C, making it suitable for industrial and automotive applications.

7. Package Type: The SN74LVC138ADRE4 is available in a TSSOP (Thin Shrink Small Outline Package) with 16 pins, which provides a compact footprint for space-constrained designs.

8. Applications: Common applications include memory address decoding, data routing, and signal demultiplexing in communication systems, as well as in various consumer electronics.

Electrical Characteristics:

• Supply Voltage (VCC): 1.65V to 5.5V
• Input Voltage Levels: Recognizes input high levels as low as 0.7VCC and input low levels as high as 0.3VCC.
• Output Drive Capability: Capable of driving standard CMOS loads, with a typical output current of ±24 mA.

Conclusion:

The SN74LVC138ADRE4 is a versatile and efficient 3-to-8 line decoder/demultiplexer that combines high-speed performance with low power consumption. Its wide operating voltage range and compatibility with various logic families make it an excellent choice for a broad spectrum of digital applications.