SN74HC245 Octal Bus Transceiver, CMOS, 3-State Outputs
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Prices updated: 13 Oct 2026
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About this product
The SN74HC245 is a CMOS octal bus transceiver with 3-state outputs that transfers 8-bit data between two buses in either direction. It shares the function and pinout of the 74LS245 but operates over a 2 V to 6 V supply range. It is commonly used for buffering and bus interfacing in microcontroller projects.
Specifications
- Logic family
- CMOS (74HC series)
- Type
- Octal bus transceiver
- Output
- 3-state
- Supply voltage
- 2 V to 6 V
- Direction control
- DIR pin
- Package
- 20-pin DIP
Frequently asked questions
Can the SN74HC245 replace a 74LS245?
It has the same function and pinout, so it can often be used in the same position. However, the input thresholds and supply range differ, so verify the logic levels and supply voltage in your circuit first.
What supply voltage range should I use?
The HC family operates from 2 V to 6 V. Keep VCC within this range and place a decoupling capacitor close to the supply pin.
