74AHC1G66GV-Q100H

Overview

The Nexperia 74AHC1G66GV-Q100H is a single-pole, single-throw analog switch qualified to AEC-Q100 Grade 1 standards. It operates on a supply voltage range of 2.0 V to 5.5 V with an overvoltage tolerant enable input up to 5.5 V. The device features very low ON resistance, typically 26 Ω at 3.0 V and 14 Ω at 5.5 V. It supports ambient temperatures from -40 °C to +125 °C and provides high noise immunity with CMOS low power dissipation. ESD protection exceeds 2000 V (HBM) and 1000 V (CDM). The component is housed in a SOT753 (SC-74A) plastic surface-mounted package.

Feature Summary

• Automotive qualification compliant with AEC-Q100 Grade 1 for reliable operation in vehicle environments.
• Overvoltage tolerant control input allows safe use as a translator in mixed voltage systems.
• High noise immunity combined with CMOS low power dissipation characteristics.

Applications

• Automotive electronic systems requiring robust signal switching.
• Mixed voltage environments utilizing the device as a level translator.
• Signal routing applications benefiting from low ON resistance and high isolation.

Procurement Notes

Verify the specific ordering suffix against official Nexperia documentation to confirm package type and tape/reel specifications. Ensure the procurement channel sources products directly from authorized distributors to guarantee authenticity and traceability. Confirm that the delivered components match the AEC-Q100 Grade 1 qualification status required for automotive integration projects.

Selection Notes

Select this component when an SPST analog switch with automotive reliability is required. The SC-74A package offers a compact footprint suitable for space-constrained designs. Verify that the system supply voltage falls within the 2.0 V to 5.5 V range and that the enable input logic levels are compatible with the overvoltage tolerant interface capabilities.

Part Context

This part belongs to the 74AHC1G66-Q100 family of single-pole, single-throw analog switches manufactured by Nexperia. The 'GV' designation specifically identifies the SOT753 (SC-74A) package variant, distinguishing it from other package options like TSSOP5. The '-Q100H' suffix indicates automotive grade qualification and specific packaging configuration.

Replacement Considerations

The 74AHC1G66GW-Q100H serves as a direct functional substitute using the TSSOP5 package. Designers must account for pinout compatibility and thermal derating differences between the SOT753 and TSSOP5 packages during replacement.

FAQ

What is the maximum voltage tolerance for the enable input?

The enable input is overvoltage tolerant up to 5.5 V, allowing it to interface safely with higher voltage logic levels while the device operates at lower supply voltages.

Does the device support partial power-down mode?

No, the 74AHC1G66-Q100 does not include dedicated I_OFF circuitry for partial power-down mode; it relies on the enable input to turn the switch off.

What is the typical ON resistance at a 3.0 V supply?

At a supply voltage of 3.0 V, the typical ON resistance is 26 Ω.