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SN74HCT645DWR Breakout
IC TXRX OCTAL BUS 4.5-5.5V 20-SOIC
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Octal bus transceiver for asynchronous two-way communication between data buses. Transmits data from A bus to B bus or vice versa based on DIR control input, with OE pin for bus isolation. Operates at 4.5-5.5V with 14ns propagation delay and ±6mA output drive, suitable for TTL-level logic interfacing.
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 | Texas Instruments |
| Part Number | SN74HCT645DWR |
| Package | SOIC-20W (7.5mm wide) |
| Pin Count | 20 |
| Logic Type | Transceiver, Non-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 SN74HCT645DWR 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