74LS645 DIP Octal Bus Transceiver (74645 IC)
The 74LS645 is an octal bus transceiver integrated circuit designed for bidirectional data communication between two buses in digital systems. It contains eight non inverting transceiver channels that allow data transfer in either direction depending on the direction control input.
The device includes three state outputs controlled by an enable signal allowing the outputs to enter a high impedance state for bus sharing applications. It belongs to the LS TTL logic family and is widely used in microprocessor systems data bus interfacing and memory communication circuits. The DIP package makes it suitable for breadboard prototyping and PCB based digital electronics designs.
Key Features
- Octal bidirectional bus transceiver
- Eight non inverting data channels
- Direction control for data flow between buses
- Three state outputs for shared bus systems
- TTL compatible logic levels
- Suitable for microprocessor and memory bus interfacing
- DIP package suitable for prototyping and PCB mounting
Specifications
- IC Model = 74LS645
- Equivalent IC = 74645
- Logic Type = Octal bus transceiver
- Logic Family = LS TTL
- Number Of Channels = 8
- Data Direction Control = Bidirectional bus control
- Output Type = Three state outputs
- Package Type = DIP
- Operating Voltage = 4.75V to 5.25V
- Application = Data bus communication and digital interfacing
Interfaces
- A0 = Bus A data line 0
- A1 = Bus A data line 1
- A2 = Bus A data line 2
- A3 = Bus A data line 3
- A4 = Bus A data line 4
- A5 = Bus A data line 5
- A6 = Bus A data line 6
- A7 = Bus A data line 7
- B0 = Bus B data line 0
- B1 = Bus B data line 1
- B2 = Bus B data line 2
- B3 = Bus B data line 3
- B4 = Bus B data line 4
- B5 = Bus B data line 5
- B6 = Bus B data line 6
- B7 = Bus B data line 7
- DIR = Data direction control
- OE = Output enable control
- VCC = Power supply
- GND = Ground
