74HC2G66DC,125

Overview

The Nexperia 74HC2G66DC,125 is a dual single-pole single-throw analog switch in a VSSOP8 package. It operates on a supply voltage range of 2.0 V to 10.0 V with an ambient temperature specification from -40 °C to +125 °C. The device features very low ON resistance, typically 41 Ω at 4.5 V and 30 Ω at 6.0 V. Static characteristics include input leakage current up to ±0.2 μA at 9.0 V and OFF-state leakage up to 1.0 μA. Dynamic performance includes propagation delays of 13 ns maximum at 4.5 V and enable times of 29 ns maximum.

Feature Summary

• Dual SPST analog switches with active HIGH digital enable inputs
• Wide supply voltage compatibility ranging from 2.0 V to 10.0 V
• Input clamp diodes allow interfacing with voltages exceeding VCC using current limiting resistors
• High noise immunity and latch-up performance exceeding 100 mA per JESD 78 Class II Level B

Applications

• Signal routing in mixed-voltage environments
• Multiplexing applications requiring high isolation
• Level translation between different logic families

Procurement Notes

Verify the ordering suffix 125 corresponds to the specific tape-and-reel packaging configuration required for your assembly line. Confirm that the VSSOP8 (SOT765-1) footprint matches your PCB design guidelines. Ensure compliance with RoHS directives and REACH regulations as documented in the manufacturer's chemical content reports before finalizing procurement orders.

Selection Notes

Select this component when a wide supply voltage range up to 10.0 V is necessary, distinguishing it from lower-voltage LVC alternatives. The HC technology provides robust noise immunity suitable for industrial environments. Verify that the typical ON resistance values meet your signal integrity requirements at the intended operating voltage levels.

Part Context

This part belongs to the Nexperia 74HC/HCT2G series of dual analog switches. It shares functional similarities with the 74HCT2G66DP but utilizes a VSSOP8 package instead of TSSOP8. The DC suffix specifically denotes the plastic very thin shrink small outline package variant within the broader family of compact logic switches.

Replacement Considerations

The 74HCT2G66DC,125 serves as a direct pin-compatible replacement for the 74HC2G66DC,125 if TTL-level input thresholds are preferred over CMOS thresholds. Other package variants such as 74HC2G66DP or 74HC2G66GT offer identical electrical functionality but require different footprints.