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74HC138D Breakout
IC DECODER 3-TO-8 16NS 16-SOIC
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Design a Custom BoardAbout This Component
High-speed CMOS 3-to-8 line decoder/demultiplexer with 16ns propagation delay. Three binary select inputs (A, B, C) determine which of eight outputs (Y0-Y7) goes low when enabled. Three enable inputs (G1, G2A, G2B) support cascading and memory address decoding applications. Operates from 2.0-6.0V with low power consumption.
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 | Toshiba Semiconductor and Storage |
| Part Number | 74HC138D |
| Package | SOIC-16 (3.9×9.9mm) |
| Pin Count | 16 |
| Circuit | 1 x 3:8 |
| Type | Decoder/Demultiplexer |
| Voltage - Supply | 2V ~ 6V |
What's Included
BILL OF MATERIALS
- 1x 74HC138D 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
WIDTH
< 0.9" (straddles breadboard)
PITCH
2.54mm standard
SOLDER
Lead-free, reflow assembled
FINISH
FR4, lead-free HASL