STMicroelectronics 74LVC245ATTR Octal Bus Transceiver

The 74LVC245ATTR is a high-performance, low-voltage, octal bus transceiver with 3-state outputs from STMicroelectronics. It is designed to be used as an interface between a 3.3V bus and a 5V bus in a mixed 3.3V/5V supply environment. The device is part of the LVC (Low-voltage CMOS) family, which is known for its low power consumption and high speed operation.

The 74LVC245ATTR is capable of bidirectional communication and features eight channels, which can be independently directed in either direction. This makes it an ideal choice for transferring data between buses of different voltages and for applications that require a high degree of flexibility in data management. The transceiver operates from a 1.65V to 5.5V VCC supply, providing compatibility with a wide range of logic levels.

With its robust design, the 74LVC245ATTR ensures latch-up performance that exceeds 250mA per JESD 78, Class II level, making it resilient in demanding environments. It also features a low static power consumption, with a typical ICC of only 10µA, which is beneficial for power-sensitive applications.

The device offers high-impedance outputs when VCC is 0V, even when the input is low. This feature prevents device destruction due to the backflow current which might otherwise occur when inputs are driven while the device is powered down.

The 74LVC245ATTR is available in a TSSOP20 package, which is not only space-saving but also allows for efficient PCB layout. The transceiver's inputs are equipped with Schmitt triggers, which provide enhanced noise immunity and allow for slow input transition rise and fall times.

Overall, the STMicroelectronics 74LVC245ATTR is a versatile and reliable component for modern electronic systems that require high-speed logic level shifting and bus interfacing. Its robustness, coupled with low power consumption, makes it suitable for a wide variety of applications, including computing, consumer electronics, and industrial automation.

For detailed specifications and application guidance, designers should consult the official datasheet available from STMicroelectronics.