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SN74LS244 replacement chip. DIP-20, Octal Buffers and Line Drivers With 3-State Outputs
The 74LS244 is an octal buffer/line driver with 3-state outputs, and it belongs to the 74LS family of integrated circuits. This family is part of the larger 7400 series, which consists of various digital logic ICs (integrated circuits) designed for different applications. The “74” in the name indicates that it is a standard TTL (Transistor-Transistor Logic) device.
Here are some key features and details about the 74LS244:
It’s important to note that the 74LS series, including the 74LS244, is an older technology. While it may still be used in some applications, more modern families of ICs like CMOS (Complementary Metal-Oxide-Semiconductor) and other advanced technologies are now prevalent in digital design due to their improved performance and lower power consumption.
The following arcade games and pinball machines use the 74LS244 on their PCBs:
The following represents the pinout of the 74LS244N in a DIP-20 package, commonly used in arcade and pinball machines.
You can find the datasheet for the 74LS244 here: 74LS244 datasheet