SN74ACT245PWRQ1

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ACT245PWRQ1 is an automotive-grade octal bus transceiver with three-state outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 4.5V to 5.5V and supports a temperature range from -40°C to +125°C. The device features TTL-compatible inputs and provides continuous output drive currents of ±24mA at 5V, with short burst support up to ±75mA. Propagation delay is specified as a maximum of 10ns under standard load conditions.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• AEC-Q100 qualified for automotive applications with defined temperature grades and ESD classification levels
• TTL-compatible CMOS inputs designed for direct interfacing with legacy logic devices
• Balanced three-state outputs capable of driving transmission lines and high capacitive loads

Buffers, Drivers, Receivers, Transceivers Applications

• Driving indicator LEDs in automotive systems
• Redriving digital signals across PCB traces
• Driving transmission lines with impedance matching
• Holding signals stable during controller reset sequences

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package suffix matches the required form factor, as the Q1 variant is available in multiple packages including VQFN and TSSOP. Confirm that the ordering part number includes the correct thermal and mechanical specifications for your board layout. Ensure the component meets AEC-Q100 Grade 1 requirements for your specific environmental operating conditions.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal bidirectional data path is required in automotive environments. It is suitable for designs needing TTL input compatibility with CMOS output drive capabilities. Consider the thermal resistance metrics if operating near the upper temperature limits or utilizing high output currents. Verify that the 50pF capacitive load limit aligns with your downstream circuitry requirements.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74ACT245-Q1 family of automotive octal bus transceivers. It shares functional similarities with other ACT series logic but is specifically qualified for automotive reliability standards. The PWRQ1 suffix indicates a TSSOP-20 package variant within the broader product line that also includes VQFN and VSSOP options.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct replacements include other SN74ACT245-Q1 variants with different package suffixes such as SN74ACT245RKSQ1 (VQFN) or SN74ACT245DGSQ1 (VSSOP). Non-automotive equivalents like the SN74ACT245PWR lack the Q1 qualification and may not meet extended temperature or reliability requirements.