What is the difference between SN74LVC2G74YZPR and SN74LVC2G74DCTR, SN74LVC2G74DCUR, SN74LVC2G74DCUT?
These are order-code variants of the same Texas Instruments series. They share the core design; the ordering code selects the exact configuration — SN74LVC2G74DCTR (SSOP-8); SN74LVC2G74DCUR: Package/pins: VSSOP (DCU), 8 pins; SN74LVC2G74DCTR is SSOP (DCT), 8 pins; do not assume direct replacement — verify PCB pads, thermal and pinoutt.; SN74LVC2G74DCUT: Package/pins: VSSOP (DCU), 8 pins; SN74LVC2G74DCTR is SSOP (DCT), 8 pins; do not assume direct replacement — verify PCB pads, thermal and pinout; factory packing is SMALL T&R, 250 per pack; SN74LVC2G74DCTR is LARGE T&R, 3,000 per pack.. SN74LVC2G74YZPR itself is the DSBGA-8 configuration. A code that differs by even one character may be a different device, so always quote the complete code exactly as it appears on your BOM.