MC74LCX245DWR2G

The On Semiconductor MC74LCX245DWR2G is a high-performance, non-inverting octal transceiver operating from a 1.65 to 5.5 V supply. This device is suitable for memory address driving and TTL level bus-oriented transceiver applications. It features 5 V tolerant inputs and outputs, allowing interface capability with 5 V TTL logic. The transceiver provides a balanced output sink and source capability of 24 mA at 3.0 VCC. It supports live insertion and withdrawal, with an IOFF specification that guarantees high impedance when VCC is 0 V. The MC74LCX245DWR2G is available in a 20-SOIC package, suitable for surface mount applications. Its operating temperature range is -55°C to 125°C (TA). The device also boasts near-zero static supply current in all three logic states, substantially reducing system power requirements, and latchup performance exceeding 100 mA.

This octal transceiver is designed for applications requiring reliable signal transmission and buffering between different logic levels. Its 5V tolerance makes it versatile for interfacing with older TTL systems while operating from lower voltage supplies. The 3-state output capability allows for bus-oriented designs where multiple devices share a common data line. The non-inverting logic ensures direct signal transfer without inversion.

Key electrical characteristics include a wide operating voltage range of 2V to 5.5V and a robust output current drive of 24mA at both A and B ports when VCC is 3.0V. The device is designed for high impedance inputs, significantly reducing current loading on input drivers. Its TTL compatible outputs offer improved switching noise performance. The Transmit/Receive (T/R) input controls data flow direction, while the Output Enable (OE) input disables both ports by placing them in a high impedance (HIGH Z) condition.

The MC74LCX245DWR2G is supplied in a 20-SOIC package, measuring 0.295 inches (7.50mm) in width, designed for surface mounting. The operating temperature range is specified from -55°C to 125°C. The device is also noted for its high ESD performance, exceeding 2000V on the Human Body Model, and latchup performance exceeding 100mA, contributing to its reliability in demanding environments.