MC74VHC1G126DFT1G

Overview

The MC74VHC1G126DFT1G is a single-channel non-inverting 3-state buffer from the VHC logic family, manufactured by onsemi. It operates within a supply voltage range of 2.0 V to 5.5 V and features CMOS-level input thresholds. The device provides high noise immunity through a buffered three-stage internal circuit and includes over-voltage tolerant inputs and outputs up to 5.5 V. It supports partial power down protection via IOFF and offers source/sink currents of 8 mA at 3.0 V. Packaged in SC-88A (SOT-353), it ensures stable signal transmission with propagation delays as low as 3.5 ns at 5 V.

Feature Summary

• Non-inverting 3-state buffering with high noise immunity
• Over-voltage tolerant inputs and outputs up to 5.5 V
• Supports partial power down protection
• CMOS-level input thresholds

Applications

• Interface circuits between 5 V and 3 V systems
• Signal buffering and isolation
• Memory address/data bus driving

Procurement Notes

Verify the specific ordering suffix 'DFT1G' corresponds to the SC-88A package and tape & reel shipping configuration. Confirm that the component meets RoHS compliance requirements for your assembly process. Ensure the design accounts for the maximum operating temperature range of -55°C to +125°C if used in harsh environments.

Selection Notes

Select this part when a single-channel non-inverting buffer with 3-state control is required. It is suitable for applications needing CMOS-level threshold compatibility rather than TTL levels. Consider the SC-88A footprint constraints and verify that the 8 mA drive current meets the load requirements of the destination circuitry.

Part Context

This component belongs to the MC74VHC1G126 series, which includes variants like the MC74VHC1GT126 featuring TTL-level inputs. The series is designed for low-power, high-speed digital applications. Other packages in the family include SC-74A, SOT-953, and UDFN6, offering flexibility for different board space requirements while maintaining identical electrical characteristics.

Replacement Considerations

MC74VHC1GT126DFT1G: Features TTL-level input thresholds instead of CMOS-level. Verify input voltage compatibility before substitution.