The SN74LS645NG4 is an integrated circuit (IC) component manufactured by Texas Instruments. It is a part of the 74LS series, which is a family of low-power Schottky logic devices. The SN74LS645NG4 is specifically a octal bus transceiver with tri-state outputs.
Key features of the SN74LS645NG4 include:
1. Octal Bus Transceiver: The IC has eight bidirectional buffers that enable bidirectional data transfer between two buses. It acts as a communication interface between two separate systems or devices.
2. Tri-State Outputs: Each of the buffers has a tri-state output, which means it can be in one of the three states: high impedance (disconnected), high logic level, or low logic level. This feature allows for multi-device sharing of a common bus line.
3. 3-State Outputs Control: The IC has an Output Enable (OE) input pin, which controls whether the outputs are active or in the high-impedance state. When OE is high, the outputs are enabled, and when OE is low, the outputs are disabled. This is useful for controlling the direction of data flow.
4. TTL Compatibility: The SN74LS645NG4 is designed to be TTL (Transistor-Transistor Logic) compatible. It operates on a power supply voltage range of 4.75V to 5.25V and provides improved speed and power characteristics compared to standard TTL devices
