SN74AHCT08QDRG4Q1

Overview

The SN74AHCT08QDRG4Q1 is an automotive-grade quad 2-input positive AND gate from Texas Instruments, belonging to the SN74AHCT0Q series. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a wide operating temperature range from -40°C to +125°C. The device features low static power consumption and provides symmetrical output drive currents of 8 mA for both high and low states. Propagation delay is specified at 5.5 ns. It is housed in a 14-pin SOIC package and holds AEC-Q100 qualification for automotive applications.

Feature Summary

• Automotive grade reliability with AEC-Q100 qualification
• CMOS technology ensuring low static power consumption
• TTL-compatible input thresholds for direct interface with TTL signals
• Wide operating temperature range suitable for harsh environments

Applications

• Automotive electronic control units
• Infotainment system logic interfaces
• Body control module signal gating
• Sensor data validation circuits

Procurement Notes

Verify the complete part number including the suffixes to ensure correct packaging and automotive qualification status. Confirm that the specific revision matches the design requirements for propagation delay and supply voltage constraints. Check RoHS compliance documentation as per regional regulations. Ensure the supplier provides traceability certificates if required for automotive assembly processes. Validate package dimensions against the PCB footprint library before finalizing procurement orders.

Selection Notes

Select this component when TTL-compatible inputs are required alongside the speed and power benefits of advanced CMOS technology. The AHCT series is appropriate for systems interfacing with legacy TTL logic families while maintaining modern performance standards. Consider the 14-SOIC package for standard surface-mount assembly processes. Evaluate the 5.5 V maximum supply voltage constraint against the system power rail stability. This device is suitable for designs requiring robust noise immunity in automotive electrical environments.

Part Context

This component is part of the SN74AHC08Q family, which includes variants with different input threshold characteristics such as the SN74AHC08QDRG4Q1. While the AHC series offers broader voltage compatibility, the AHCT variant specifically targets 5 V systems with TTL input levels. All members share similar automotive qualification and package options but differ in switching speed and input voltage thresholds.

Replacement Considerations

Direct substitutes include other SN74AHCT08Q variants with different package codes or tape/reel specifications. Cross-family replacements like SN74HC08Q may require level shifting due to non-TTL inputs. Verify pinout compatibility and electrical parameters before substituting.