74LS540 DIP Inverting Octal Buffer With Three State Outputs (74540 IC)
The 74LS540 is an inverting octal buffer integrated circuit designed for signal buffering and line driving in digital systems. It contains eight independent inverting buffers that provide strong output drive capability for interfacing between logic circuits and external loads.
The device includes three state outputs controlled by enable inputs allowing the outputs to be placed in a high impedance state for bus oriented systems. It belongs to the LS TTL logic family and is commonly used in data bus buffering memory interfacing and digital communication circuits. The DIP package makes it suitable for breadboard prototyping and PCB based digital electronics designs.
Key Features
- Octal inverting buffer with eight independent channels
- Three state outputs for bus oriented systems
- High current drive capability for digital signals
- TTL compatible logic levels
- Suitable for signal buffering and line driving
- Dual enable control inputs for output control
- DIP package suitable for prototyping and PCB mounting
Specifications
- IC Model = 74LS540
- Equivalent IC = 74540
- Logic Type = Inverting octal buffer
- Logic Family = LS TTL
- Number Of Buffers = 8
- Output Type = Three state outputs
- Package Type = DIP
- Operating Voltage = 4.75V to 5.25V
- Application = Data bus buffering and digital signal interfacing
Interfaces
- A0 = Input channel 0
- A1 = Input channel 1
- A2 = Input channel 2
- A3 = Input channel 3
- A4 = Input channel 4
- A5 = Input channel 5
- A6 = Input channel 6
- A7 = Input channel 7
- Y0 = Inverted output channel 0
- Y1 = Inverted output channel 1
- Y2 = Inverted output channel 2
- Y3 = Inverted output channel 3
- Y4 = Inverted output channel 4
- Y5 = Inverted output channel 5
- Y6 = Inverted output channel 6
- Y7 = Inverted output channel 7
- OE1 = Output enable control
- OE2 = Output enable control
- VCC = Power supply
- GND = Ground
