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74HCT257D,653 Breakout
IC MUX 4X2:1 3-STATE 16-SO
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Design a Custom BoardAbout This Component
Quad 2-input multiplexer with 3-state outputs and TTL-level inputs (HCT variant). Features wide supply voltage range (2.0-6.0V), low power CMOS dissipation, and input clamp diodes for overvoltage tolerance. Ideal for bus-switching and data selection applications in digital systems.
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 | 74HCT257D,653 |
| Package | SOIC-16 (3.9×9.9mm) |
| Pin Count | 16 |
| Circuit | 4 x 2:1 |
| Type | Multiplexer |
| Voltage - Supply | 4.5V ~ 5.5V |
| Voltage Supply Source | Single Supply |
What's Included
BILL OF MATERIALS
- 1x 74HCT257D,653 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