Overview
The 74HCT138DB118 is a high-speed CMOS 3-to-8 line decoder/demultiplexer produced by NXP USA Inc. This device is designed to be pin-compatible with the 74LS low power Schottky types, making it a versatile component for various digital circuit applications. It operates within a wide supply voltage range and is known for its robust ESD protection and high-speed operation.
Key Specifications
| Product Attribute | Attribute Value |
|---|---|
| Manufacturer | NXP Semiconductors |
| Voltage - Supply | 4.5V ~ 5.5V |
| Supplier Device Package | 16-SSOP |
| Package / Case | 16-SSOP (0.209", 5.30mm Width) |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
| Independent Circuits | 1 |
| Current - Output High, Low | 8mA, 8mA |
| Circuit | 3-to-8 line decoder/demultiplexer |
| Base Product Number | 74HCT138 |
| RoHs Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
Key Features
- Wide supply voltage range from 4.5V to 5.5V
- ESD protection tested per JESD 22, exceeding 200-V Machine Model and 2000-V Human Body Model
- High-speed CMOS technology
- Three-bit binary weighted address input and one active low output with the remaining seven outputs high when enabled
- Two active LOW enable inputs and one active HIGH enable input for flexible control
- Ability to expand decoders in parallel to create 4-to-16 line and 5-to-32 line versions
- Surface mount package for easy integration into modern PCB designs
Applications
The 74HCT138DB118 is suitable for a variety of digital circuit applications, including:
- Decoder and demultiplexer circuits in digital systems
- Memory address decoding
- Data routing and selection in digital networks
- Control logic in industrial and consumer electronics
- High-speed data processing and transmission systems
Q & A
- What is the primary function of the 74HCT138DB118?
The primary function is to act as a 3-to-8 line decoder/demultiplexer. - What is the supply voltage range for this component?
The supply voltage range is from 4.5V to 5.5V. - What type of package does the 74HCT138DB118 come in?
The component comes in a 16-SSOP package. - What are the operating temperature limits for this device?
The operating temperature range is from -40°C to 125°C. - Does the 74HCT138DB118 have ESD protection?
Yes, it has robust ESD protection exceeding 200-V Machine Model and 2000-V Human Body Model. - How many independent circuits does the 74HCT138DB118 contain?
It contains one independent circuit. - What is the maximum output current for this device?
The maximum output current is 8mA for both high and low states. - Is the 74HCT138DB118 RoHS compliant?
Yes, it is ROHS3 compliant. - What is the moisture sensitivity level (MSL) of this component?
The MSL is 1 (Unlimited). - Can the 74HCT138DB118 be used in high-speed applications?
Yes, it is designed for high-speed CMOS applications.
