SN74LVTZ244 Overview
These octal buffers / drivers are designed specifically for low-voltage (3.3-V) VCC operation with the capability to provide a TTL interface to a 5-V system environment. 2Y1 GND 2A1 1Y4 2A2 SN54LVTZ244 . When OE is low, the device passes data from the A inputs to the Y outputs.