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74HCT540D,653 Breakout
IC BUFFER OCTAL 3-STATE INVERTING 20-SO
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8-bit inverting buffer/line driver with 3-state outputs and independent output enables (OE1, OE2). Operates from 2.0V to 6.0V with TTL-level inputs (74HCT540). Features input clamp diodes for overvoltage tolerance, low power CMOS dissipation, and high latch-up immunity. Ideal for bus buffering, signal inversion, and output isolation in digital logic applications.
Package: SOIC-20W (7.5mm wide) · 20 pins
Why does this need a breakout?
The 1.27mm pin pitch makes hand-soldering this 20-pin SOIC challenging and error-prone. A breakout board brings all pins to standard 0.1" spacing, enabling reliable breadboard prototyping and simplifying development of USB-to-UART interfaces without requiring reflow soldering or specialized equipment.
Component specifications
ELECTRICAL CHARACTERISTICS
| Manufacturer | Nexperia USA Inc. |
| Part Number | 74HCT540D,653 |
| Package | SOIC-20W (7.5mm wide) |
| Pin Count | 20 |
| Logic Type | Buffer, Inverting |
| Number of Bits per Element | 8 |
| Number of Elements | 1 |
| Output Type | 3-State |
| Voltage - Supply | 4.5V ~ 5.5V |
What's Included
BILL OF MATERIALS
- 1x 74HCT540D,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