SN74LVC1G139DCTT

Overview

The SN74LVC1G139DCTT is a single 2-to-4 line decoder manufactured by Texas Instruments. It operates within a supply voltage range of 1.65V to 5.5V and supports surface-mount installation in an SC-88 package. The device features Schmitt-trigger inputs for noise immunity and provides active-low outputs with 32mA drive capability. It functions across an extended temperature range from -40°C to +85°C, ensuring reliable performance in various digital logic applications.

Feature Summary

• Integrates a single 2-to-4 line decoding circuit in a compact footprint
• Utilizes Schmitt-trigger inputs to enhance noise rejection and signal integrity
• Delivers high-drive active-low outputs suitable for direct load interfacing

Applications

• Address decoding in embedded systems
• Chip select generation for memory arrays
• Control signal routing in portable devices

Procurement Notes

Verify the specific suffix DCTT corresponds to the SC-88 package and tape-and-reel delivery format. Confirm RoHS compliance status and moisture sensitivity level requirements against your assembly process specifications. Ensure the operating voltage range aligns with your system power rails before finalizing procurement orders.

Selection Notes

Select this component when a single decoder channel is required in space-constrained designs. The LVC series offers compatibility with modern low-voltage logic families. Consider the SC-88 package dimensions for PCB layout constraints. Verify that the 32mA output current meets the driving requirements of downstream components without additional buffering.

Part Context

This part belongs to the Texas Instruments SN74LVC1Gxx family of single-gate logic devices. These components are designed for low-power applications requiring small form factors. The SN74LVC1G139 specifically provides decoding functionality, distinguishing it from buffers or inverters within the same series. It complements other LVC devices for complete logic system implementation.

Replacement Considerations

The SN74LVC1G139DCUR is a compatible alternative offering identical electrical characteristics but packaged in VSSOP-8 instead of SC-88. Verify pinout compatibility and physical footprint differences before substitution. Other manufacturers may offer functionally equivalent decoders, but parameter matching is essential.