IDT74LVC244ASOG

Overview

The IDT74LVC244ASOG is a 3.3V CMOS octal buffer/driver with 3-state outputs, organized as two 4-bit line drivers with separate output-enable inputs. It operates within an extended supply voltage range of 2.7V to 3.6V and features ±24mA high-output drivers for moderate to heavy loads. The device supports hot insertion and provides 5V tolerance on all inputs, outputs, and I/O ports. It utilizes 0.5 micron CMOS technology, ensuring low static power consumption of 0.4 μW typical at VCC = 3.3V. Rail-to-rail output swing increases noise margin, while bus-hold functionality is absent in this specific suffix variant.

Feature Summary

• Provides 5V tolerant inputs and outputs for interfacing with mixed voltage systems
• Supports hot insertion capabilities without damage
• Features rail-to-rail output swing for improved noise margins
• Includes high-output drivers capable of ±24mA current

Applications

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

Procurement Notes

Verify the package type matches the SOIC-20 specification associated with the 'SO' suffix. Confirm the temperature range requirement aligns with the industrial rating (-40°C to +85°C). Ensure the design does not rely on bus-hold features, as this specific part number lacks that function. Check for RoHS compliance status if required by the manufacturing environment.

Selection Notes

Select this component when driving moderate to heavy loads requiring ±24mA output current capability. It is suitable for applications needing 5V tolerance on both input and output lines within a 3.3V system. Consider this part for designs requiring hot insertion support and low static power consumption. Verify that the absence of bus-hold functionality meets the signal integrity requirements of the target application.

Part Context

This device belongs to the LVC244A family of octal buffers/drivers manufactured by Integrated Device Technology (IDT). It is designed as a high-performance, low-power solution for 3.3V logic systems. The component serves as a translator in mixed 3.3V/5V environments, allowing direct interface with TTL levels. It is available in multiple packages including SOIC, SSOP, QSOP, and TSSOP.

Replacement Considerations

Compatible substitutes include other 74LVC244 variants from manufacturers such as NXP, TI, or ON Semiconductor. Ensure the replacement maintains the same 3.3V operating voltage, 5V tolerance, and ±24mA drive strength. Verify pin compatibility and package dimensions if replacing the SOIC-20 form factor.