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SN74HCT257DR Breakout
IC MULTIPLEXER 4X2:1 5V 16-SOIC
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Design a Custom BoardAbout This Component
Quadruple 2-to-1 multiplexer with 3-state outputs for bus-organized systems. Operates from 4.5V to 5.5V with 17ns typical propagation delay and ±6mA output drive. TTL-compatible inputs and buffered I/O provide direct interface to system buses in high-performance 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 | SN74HCT257DR |
| 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 SN74HCT257DR 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