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SN74HCT138DR Breakout
IC DECODER 3:8 LINE 16-SOIC 17NS
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Design a Custom BoardAbout This Component
High-speed 3-to-8 line decoder/demultiplexer in 16-SOIC package. Converts 3 binary inputs to 8 active-low outputs with 17ns typical propagation delay and ±4mA drive capability. Includes three enable inputs for cascading, operates at 4.5-5.5V, and designed for memory address decoding and fast data routing applications.
Package: SOIC-16 (3.9×9.9mm) · 16 pins
Why does this need a breakout?
The 1.27mm pin pitch on this 16-pin package makes hand-soldering impractical and breadboard mounting impossible. A breakout board brings the pins to standard 2.54mm spacing, enabling quick prototyping of RS-232/RS-485 transceivers, ADCs, and line drivers without requiring surface-mount soldering skills or PCB fabrication.
Component specifications
ELECTRICAL CHARACTERISTICS
| Manufacturer | Texas Instruments |
| Part Number | SN74HCT138DR |
| Package | SOIC-16 (3.9×9.9mm) |
| Pin Count | 16 |
| Circuit | 1 x 3:8 |
| Type | Decoder/Demultiplexer |
| Voltage - Supply | 4.5V ~ 5.5V |
| Voltage Supply Source | Single Supply |
What's Included
BILL OF MATERIALS
- 1x SN74HCT138DR soldered onto breakout PCB
- Pin headers pre-soldered (2.54mm / 0.1" pitch)
- All IC pins broken out to 2.54mm headers
Breakout Board Design
PCB SPECIFICATIONS