SN74LVC1G139DCUR

Overview

The SN74LVC1G139DCUR 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 CMOS and TTL input logic levels. The device features active-low outputs and includes two active-low enable inputs for flexible control. It is housed in an 8-pin VSSOP package with dimensions of 2.00mm x 2.30mm and a height of 0.90mm. The component functions across an operating temperature range of -40°C to +85°C.

Feature Summary

• Provides decoding functionality from two binary inputs to four distinct active-low outputs
• Incorporates dual active-low enable inputs to manage output states independently
• Compatible with both CMOS and TTL input logic standards

Applications

• Address decoding in embedded systems
• Memory chip select generation
• Control signal routing in digital circuits

Procurement Notes

Verify the specific suffix DCUR corresponds to the VSSOP-8 package and tape-and-reel configuration. Confirm that the active-low enable and output polarity requirements align with the system design. Ensure the operating voltage and temperature ranges meet the application specifications before procurement.

Selection Notes

Select this component when a compact, low-voltage decoder is required for address or control lines. The VSSOP-8 package offers space efficiency for dense PCB layouts. Verify compatibility with the system's logic voltage levels and ensure the active-low output configuration matches the downstream circuit requirements.

Part Context

This part belongs to the Texas Instruments SN74LVC1G series, which focuses on single-function logic devices optimized for low-voltage applications. The LVC family is designed to bridge different voltage domains while maintaining high speed and low power consumption. This specific model provides essential decoding capabilities within a minimal footprint.

Replacement Considerations

Check for pin-compatible alternatives such as the SN74LVC1G139DCKR if reel packaging is preferred over cut tape. Verify functional equivalence with other 2-to-4 decoders from different manufacturers if supply constraints exist.