SN74HC244QDWRG4Q1

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC244QDWRG4Q1 is an automotive-grade octal buffer and line driver from Texas Instruments, belonging to the HC logic family. It features eight non-inverting channels with three-state outputs in a 20-pin SOIC package. The device operates within a supply voltage range of 2 V to 6 V. Key electrical parameters include a maximum static current of 8 uA and output drive capabilities of -7.8 mA (high) and 7.8 mA (low). Propagation delays are specified as 115 ns at 2 V, 23 ns at 4.5 V, and 20 ns at 6 V. It is qualified under AEC-Q100 standards for operation between -40°C and +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle applications.
• Octal configuration providing eight independent non-inverting signal paths.
• Three-state output design enabling effective bus-oriented architectures and system isolation.

Buffers, Drivers, Receivers, Transceivers Applications

• Automotive electronic control unit (ECU) signal buffering
• High-speed data acquisition systems requiring isolated input channels
• Industrial communication bus drivers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix G4Q1 indicates automotive grade compliance and lead-free composition. Confirm the SOIC-20 package dimensions match the target PCB footprint. Ensure the operating temperature range aligns with the intended environmental conditions. Cross-reference the datasheet revision date to confirm parameter validity.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when automotive reliability is required alongside standard CMOS performance levels. The HC series offers a balance of speed and power consumption suitable for general-purpose digital interfaces. Consider the 2V to 6V supply range flexibility compared to fixed-voltage logic families. Evaluate the 20-pin SOIC package constraints against available board space.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74HC244 family of octal buffers. The Q1 suffix denotes automotive qualification, while G4 indicates green/lead-free manufacturing. It serves as a bridge between low-power logic sources and higher-capacitance loads or buses.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

• SN74HC244QDWRQ1
• SN74HC244DR

Buffers, Drivers, Receivers, Transceivers FAQ

What is the propagation delay at 4.5 V?

The propagation delay is 23 ns at a supply voltage of 4.5 V.

Is this component RoHS compliant?

Yes, the G4 suffix indicates it is RoHS compliant and lead-free.