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74HCT138D/C5J Breakout
3-TO-8 DECODER/DEMUX INVERTING 16-SO
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Design a Custom BoardAbout This Component
The 74HCT138 is a 3-to-8 line decoder/demultiplexer that converts three binary address inputs (A0-A2) into eight mutually exclusive active-LOW outputs (Y0-Y7). It features three enable inputs for easy cascading and can function as a demultiplexer or memory chip select decoder. Specified for -40°C to +125°C operation with supply voltage range 2.0-6.0V.
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 | Nexperia USA Inc. |
| Part Number | 74HCT138D/C5J |
| 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 74HCT138D/C5J 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