Overview
The SN74LS139ADRE4 is a dual 2-line to 4-line decoder/demultiplexer produced by Texas Instruments. This component is designed for use in high-performance memory-decoding or data-routing applications. It features two individual 2-line to 4-line decoders in a single package, making it versatile for various system designs. The device is part of the 74LS series, known for its low power consumption and high noise immunity.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOIC (D) | - |
| Pins | 16 | - |
| Operating Temperature Range | 0 to 70 | °C |
| Supply Voltage (VCC) | 4.5 to 5.5 | V |
| High-Level Input Voltage (VIH) | 2 | V |
| Low-Level Input Voltage (VIL) | 0.7 to 0.8 | V |
| High-Level Output Current (IOH) | -0.4 | mA |
| Low-Level Output Current (IOL) | 4 to 8 | mA |
| Propagation Delay Time (tPLH, tPHL) | Typically 10 ns | ns |
| Eco Plan | RoHS & Green | - |
Key Features
- Dual 2-line to 4-line decoders/demultiplexers in a single package.
- Active-low enable (G) inputs for simplified cascading and data reception.
- Fully buffered inputs with high-performance Schottky diodes to suppress line ringing.
- Low power consumption and high noise immunity.
- Available in various package options including SOIC, PDIP, and CFP.
Applications
- High-performance memory-decoding systems.
- Data-routing applications requiring short propagation delay times.
- Fast-enable circuit systems to minimize system decoding delays.
- General-purpose decoding and demultiplexing in digital systems.
Q & A
- What is the primary function of the SN74LS139ADRE4?
The primary function is to act as a dual 2-line to 4-line decoder/demultiplexer.
- What are the operating temperature ranges for the SN74LS139ADRE4?
The operating temperature range is from 0°C to 70°C.
- What is the supply voltage range for this component?
The supply voltage range is from 4.5V to 5.5V.
- What are the typical propagation delay times for this device?
The typical propagation delay times (tPLH, tPHL) are around 10 ns.
- Is the SN74LS139ADRE4 RoHS compliant?
- What package types are available for the SN74LS139ADRE4?
The component is available in SOIC (D), PDIP (N), and CFP (W) packages.
- How many decoders are included in a single package of the SN74LS139ADRE4?
There are two individual 2-line to 4-line decoders in a single package.
- What is the purpose of the active-low enable (G) inputs?
The active-low enable (G) inputs simplify cascading and data reception.
- What kind of diodes are used to suppress line ringing in this component?
High-performance Schottky diodes are used to suppress line ringing.
- In what types of systems is the SN74LS139ADRE4 commonly used?
It is commonly used in high-performance memory-decoding and data-routing applications.
