IDT74LVC245ASOG

Overview

The IDT74LVC245ASOG is an industrial temperature range, 3.3V CMOS octal bus transceiver with 3-state outputs and 5V tolerant I/O. It utilizes 0.5 micron CMOS technology to support VCC ranges of 2.7V to 3.6V. The device features high output drivers capable of ±24mA, ensuring performance under moderate to heavy loads. All inputs and outputs are 5V tolerant, supporting hot insertion and mixed voltage systems. Quiescent power consumption is typically 0.4 μW. Propagation delays range from 1.5ns to 7.3ns depending on supply voltage.

Feature Summary

• Supports asynchronous communication between two busses with direction control via DIR pin
• All pins are 5V tolerant, allowing use as a translator in mixed 3.3V/5V supply systems
• High output drivers provide ±24mA current capability for driving moderate to heavy loads
• Inputs feature hysteresis for improved noise margin and reduced system switching noise

Applications

• 5V and 3.3V mixed voltage systems
• Data communication systems
• Telecommunication systems

Procurement Notes

Verify the specific suffix 'SOG' corresponds to the SOIC Green package variant when ordering. Confirm that the industrial temperature range (-40°C to +85°C) meets your operational environment requirements. Ensure that the 3.3V logic level compatibility aligns with your system's voltage domains. Check for any specific handling precautions related to ESD sensitivity despite the >2000V rating. Validate that the pin configuration matches your PCB layout design.

Selection Notes

Select this component when interfacing between 3.3V and 5V logic domains requiring bidirectional data transfer. The ±24mA drive strength is suitable for applications needing to drive moderate capacitive loads without significant signal degradation. The 5V tolerance on all I/O pins eliminates the need for additional level shifting circuitry in mixed-voltage designs. Consider the propagation delay specifications if timing constraints are critical for your synchronous or asynchronous communication protocols.

Part Context

This part belongs to the IDT74LVC245A family of octal bus transceivers. The 'SOG' suffix indicates a Small Outline IC (SOIC) package with green molding compound. It is designed for high-speed, low-power applications in industrial environments. The device integrates direction control and output enable functions into a single 20-pin package, simplifying board space requirements compared to multiple smaller transceivers.

Replacement Considerations

Compatible substitutes include other 74LVC245 variants from different manufacturers offering identical pinouts and electrical characteristics. Verify that replacement parts maintain the same 5V tolerance and ±24mA drive current capabilities. Ensure the replacement device supports the required industrial temperature range and package type for direct drop-in integration.