Overview
The 74HCT139D, produced by Nexperia USA Inc., is a dual 2-to-4 line decoder/demultiplexer integrated circuit. This component is part of the 74HCT series, which operates at TTL (Transistor-Transistor Logic) levels. It decodes two binary weighted address inputs (nA0, nA1) to four mutually exclusive outputs (nY0 to nY3), making it suitable for various digital logic applications such as memory decoding, data routing, and code conversion.
Key Specifications
| Parameter | Description |
|---|---|
| Type Number | 74HCT139D |
| Orderable Part Number | 74HCT139D,652 (933713510652) |
| Package | SO16 (SOT109-1) |
| Input Levels | TTL level |
| Enable Input | nE (Active HIGH to force all outputs HIGH) |
| Outputs | Four mutually exclusive outputs (nY0 to nY3) |
| ESD Protection | HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V |
| Operating Temperature | -40 °C to +85 °C and -40 °C to +125 °C |
| Package Dimensions | 9.9 mm x 3.9 mm x 1.35 mm body |
Key Features
- Dual 2-to-4 line decoder/demultiplexer functionality
- Two binary weighted address inputs (nA0, nA1) to four mutually exclusive outputs (nY0 to nY3)
- Enable input (nE) that can be used as a data input for 1-to-4 demultiplexer applications
- Inputs include clamp diodes for interfacing with voltages in excess of VCC
- Suitable for memory decoding, data routing, or code conversion
- Complies with JEDEC standard no. 7A
- Active LOW mutually exclusive outputs
Applications
The 74HCT139D is versatile and can be used in a variety of digital logic applications, including:
- Memory decoding
- Data routing
- Code conversion
- Industrial and automotive systems
- Consumer electronics
- Computing and mobile devices
Q & A
- What is the primary function of the 74HCT139D?
The primary function of the 74HCT139D is to decode two binary weighted address inputs to four mutually exclusive outputs, making it a dual 2-to-4 line decoder/demultiplexer.
- What are the input levels for the 74HCT139D?
The input levels for the 74HCT139D are TTL (Transistor-Transistor Logic) levels.
- What is the role of the enable input (nE) in the 74HCT139D?
The enable input (nE) forces all outputs HIGH when it is in the HIGH state. It can also be used as the data input for a 1-to-4 demultiplexer application.
- What type of ESD protection does the 74HCT139D offer?
The 74HCT139D offers ESD protection with HBM (Human Body Model) exceeding 2000 V and CDM (Charged Device Model) exceeding 1000 V.
- What is the operating temperature range for the 74HCT139D?
The operating temperature range for the 74HCT139D is from -40 °C to +85 °C and from -40 °C to +125 °C.
- What package type is the 74HCT139D available in?
The 74HCT139D is available in the SO16 (SOT109-1) package.
- Can the 74HCT139D be used in high-voltage applications?
Yes, the 74HCT139D includes clamp diodes that allow it to interface with voltages in excess of VCC using current limiting resistors.
- What are some common applications of the 74HCT139D?
The 74HCT139D is commonly used in memory decoding, data routing, code conversion, and various digital logic applications across industrial, automotive, consumer electronics, and computing systems.
- Is the 74HCT139D compliant with any industry standards?
Yes, the 74HCT139D complies with JEDEC standard no. 7A.
- How can I obtain samples of the 74HCT139D?
Samples can be obtained through Nexperia's sales organization or through their network of global and regional distributors.
