Overview
The SN74LV139APWT is a dual 2-line to 4-line decoder/demultiplexer integrated circuit manufactured by Texas Instruments. Designed for high-performance memory-decoding or data-routing applications, this device operates within a voltage range of 2 V to 5.5 V. It is housed in a 16-TSSOP package, making it suitable for surface-mount applications. The SN74LV139APWT is ideal for use in systems requiring very short propagation delay times, such as high-speed memory systems, where it can minimize the effects of system decoding. Its fully buffered inputs ensure that each input represents only one normalized load to its driving circuit, enhancing overall system performance.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Type | Decoder/Demultiplexer | Dual 2-line to 4-line | |
| Circuit | 1 x 2:4 | ||
| Independent Circuits | 1 | ||
| Output Current (High/Low) | 12mA / 12mA | ||
| Voltage Supply | 2 V ~ 5.5 V | Single Supply | |
| Operating Temperature | -40°C ~ 85°C | ||
| Mounting Type | Surface Mount | ||
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) | ||
| Supplier Device Package | 16-TSSOP | ||
| Packaging | Tape & Reel (TR) |
Key Features
- Dual 2-line to 4-line decoder/demultiplexer
- Operates from 2 V to 5.5 V
- Very short propagation delay times
- Fully buffered inputs
- Ioff circuitry for partial-power-down applications
- Surface-mount 16-TSSOP package
Applications
The SN74LV139APWT is widely used in high-performance memory systems and data-routing applications. Its ability to minimize system decoding effects makes it particularly suitable for high-speed memory systems. Additionally, it can be employed in demultiplexing applications where the active-low enable input can be used as a data line. Other typical applications include industrial automation, consumer electronics, and automotive electronics, where reliable and efficient decoding and demultiplexing are required.
Q & A
1. What is the operating voltage range of the SN74LV139APWT?
The SN74LV139APWT operates within a voltage range of 2 V to 5.5 V.
2. What is the package type of the SN74LV139APWT?
The SN74LV139APWT is housed in a 16-TSSOP package.
3. What is the output current capability of the SN74LV139APWT?
The output current capability is 12mA for both high and low outputs.
4. What is the operating temperature range of the SN74LV139APWT?
The operating temperature range is -40°C to 85°C.
5. Can the SN74LV139APWT be used in demultiplexing applications?
Yes, the active-low enable input can be used as a data line in demultiplexing applications.
6. What is the propagation delay time of the SN74LV139APWT?
The SN74LV139APWT is designed for very short propagation delay times, making it suitable for high-speed memory systems.
7. Is the SN74LV139APWT suitable for surface-mount applications?
Yes, the 16-TSSOP package is designed for surface-mount applications.
8. What is the function of the Ioff circuitry in the SN74LV139APWT?
The Ioff circuitry disables the outputs during partial-power-down, preventing damaging current backflow.
9. How many independent circuits are there in the SN74LV139APWT?
There is one independent circuit in the SN74LV139APWT.
10. What are the typical applications of the SN74LV139APWT?
Typical applications include high-performance memory systems, data-routing, industrial automation, consumer electronics, and automotive electronics.
