The SN74HCT245N is an 8-bit non-inverting bus transceiver from TI's 74HCT family, packaged in a 20-pin DIP for through-hole assembly. It provides bidirectional data flow between two 8-bit buses, controlled by a direction pin (DIR) and an output-enable pin (OE). The 3-state outputs let you isolate the device from the bus when it is not selected — standard for shared data lines in microprocessor or memory systems. Supply range is 4.5 V to 5.5 V, and the part is rated for industrial temperature environments from -40°C to 85°C. Output drive is 6 mA sink and source per channel, which is typical for HCT-family parts driving CMOS or TTL inputs on a backplane or peripheral bus.
Through-hole DIP — still the right call for prototyping, repair, and legacy boards
The 20-DIP (0.300", 7.62 mm) package is a through-hole footprint that fits standard breadboards, prototyping boards, and existing PCB layouts designed for DIP sockets.