SN74LVC139ADBR

Overview

The SN74LVC139ADBR is a dual 2-line to 4-line decoder/demultiplexer from the Texas Instruments LVC logic family. It operates within a supply voltage range of 1.65 V to 3.6 V and supports an operating temperature range of -40 °C to +85 °C. The device features a maximum propagation delay of 6.2 ns and includes ESD protection exceeding JESD 22 standards, with inputs capable of accepting voltages up to 5.5 V. It is housed in a 16-pin SSOP (DB) package.

Feature Summary

• Dual independent 2-to-4 decoding or demultiplexing circuits integrated into a single package
• Active-low enable inputs that function as data lines for demultiplexing applications
• Fully buffered inputs compatible with 3.3-V and 5-V driving devices for mixed-voltage translation
• Latch-up performance exceeding 250 mA per JESD 17 specifications

Applications

• Address decoding for memory and I/O port selection
• Demultiplexing data streams using active-low enable inputs
• Voltage level translation between 3.3-V and 5-V system environments
• General-purpose digital logic control circuits

Procurement Notes

Verify the specific ordering suffix 'B' indicates large tape-and-reel packaging containing 2000 units. Confirm the DB package designation corresponds to the 16-pin SSOP form factor. Ensure the component status is listed as active production data before finalizing procurement plans.

Selection Notes

Select this component when dual independent decoders are required in a compact surface-mount footprint. The LVC series provides low power consumption suitable for battery-operated systems. Verify that the 1.65 V to 3.6 V supply range aligns with the target system voltage requirements.

Part Context

This part belongs to the SN74LVC139A family of dual 2-line to 4-line decoders. It shares functional characteristics with other variants such as SN74LVC139ADR and SN74LVC139APWR, differing primarily in package type and shipping quantity configuration.

Replacement Considerations

SN74LVC139ADR serves as a direct replacement offering identical functionality in a SOIC package.