Texas Instruments 20-SOIC SN74LS245DWG4

The SN74LS245DWG4 is a quad bi-directional bus transceiver IC from Texas Instruments, part of the 74LS logic family. It features non-inverting data transmission and can operate with a power supply voltage of typically 4.75 to 5.25V. This device has tri-state outputs enabling it to connect two separate buses or interface with microprocessors/microcontrollers. Each channel is capable of driving up to standard TTL loads. The 'DWG4' suffix indicates a specific packaging type, often SOIC-20 (Small Outline Integrated Circuit), suitable for surface mount applications, and possibly designates a specific temperature range or qualification level. It's commonly used for bidirectional data buffering in digital systems where high current drive capability is required.