Texas Instruments SN74LV139ADGVRE4

Overview

SN74LV139ADGVRE4 from Texas Instruments is a dual 2-line to 4-line decoder/demultiplexer in a 16-pin TVSOP (DGV) package, operating from 2 V to 5.5 V, with 7.5 ns max propagation delay at 5 V, mixed-mode voltage interface support, and I_off partial-power-down capability-used in high-speed memory decoding and data-routing systems.

For engineers reviewing the SN74LV139ADGVRE4 datasheet, SN74LV139ADGVRE4 pinout, SN74LV139ADGVRE4 application, or SN74LV139ADGVRE4 equivalent, this page delivers verified functional modes, real-world timing behavior across V_CC levels (2.5 V/3.3 V/5 V), thermal resistance (120 °C/W), latch-up immunity (>250 mA), and precise pin-level circuit roles for system integration.

Technical Context

The SN74LV139ADGVRE4 integrates two independent 2-to-4 line decoders with active-low enable inputs (1G, 2G), each accepting binary address inputs (A0/A1) to assert one of four active-low outputs (Y0–Y3). Its fully buffered inputs present only one normalized load, minimizing driver loading in cascaded or fan-out-critical paths.

It supports mixed-mode operation: inputs tolerate voltages up to 5.5 V regardless of V_CC, enabling interfacing between 3.3 V logic and 5 V subsystems. The I_off feature disables outputs during power-down, preventing backflow current when V_CC = 0 V-critical for hot-swap and partial-power-down architectures.

Key Specifications

Pinout & Package

SN74LV139ADGVRE4 uses a 16-pin Thin Very Small Outline Package (TVSOP, DGV), body size 3.6 mm × 4.4 mm, total footprint 3.6 mm × 6.4 mm, 0.5 mm lead pitch, and exposed pad for thermal enhancement.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 2-to-4 decoder applications.

Compared with SN74LV139ADGVRE4, SN74LV139ADR offers superior thermal dissipation in space-tolerant layouts, while SN74LV139APWR provides a widely supported intermediate-density alternative-neither is pin-compatible with the DGV variant due to differing package dimensions and land patterns.

Availability

SN74LV139ADGVRE4 is available at Aetrix Electronics and suitable for high-speed memory decoding, industrial peripheral selection, data demultiplexing, and logic-level translation applications requiring stable component supply and guaranteed long-term sourcing.

Supply support for SN74LV139ADGVRE4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with over 50 years of innovation in high-reliability, industry-standard logic families.

The SN74LV139A series was designed for high-performance memory-decoding and data-routing systems demanding low propagation delay, wide V_CC range, and robust partial-power-down operation in industrial and computing applications.

FAQ

What is the maximum propagation delay of SN74LV139ADGVRE4 at 3.3 V?

The maximum propagation delay (t_pd) of SN74LV139ADGVRE4 is 13 ns at V_CC = 3.3 V ± 0.3 V with 15 pF load, as specified in Section 4.7 of the datasheet. This value applies to transitions from address or enable inputs to any Y output under recommended operating conditions and ensures timing compliance in 3.3 V high-speed digital systems. SN74LV139ADGVRE4 maintains consistent performance across its full voltage range.

Does SN74LV139ADGVRE4 support mixed-voltage operation between 3.3 V and 5 V domains?

Yes, SN74LV139ADGVRE4 supports mixed-mode voltage operation: its inputs tolerate voltages up to 5.5 V regardless of V_CC, allowing direct connection of 5 V address or enable signals to a 3.3 V-powered SN74LV139ADGVRE4. Outputs swing rail-to-rail (0 V to V_CC), so they are compatible with 3.3 V receivers. This eliminates external level shifters in hybrid-voltage systems.

What is the purpose of the I_off feature in SN74LV139ADGVRE4?

The I_off feature in SN74LV139ADGVRE4 disables all outputs and limits input/output leakage to <5 μA when V_CC = 0 V, preventing damaging current backflow during partial power-down or hot-swap events. This ensures system-level safety in modular or field-upgradable hardware where subsystems may be powered independently. SN74LV139ADGVRE4 implements this per JEDEC JESD78 requirements.

Can SN74LV139ADGVRE4 be used for demultiplexing applications?

Yes, SN74LV139ADGVRE4 is explicitly designed for demultiplexing: its active-low enable inputs (1G, 2G) can serve as data lines, while address inputs (A0/A1) select the output channel. Each channel independently routes one input to four possible destinations with active-low assertion. This functionality is confirmed in the device functional modes section and logic diagram of the SN74LV139ADGVRE4 datasheet.

What is the thermal resistance (θ_JA) of SN74LV139ADGVRE4 in its TVSOP package?

The junction-to-ambient thermal resistance (θ_JA) of SN74LV139ADGVRE4 in the TVSOP (DGV) package is 120 °C/W, as documented in Section 4.4 of the datasheet. This value assumes standard JEDEC high-k board conditions (2S2P) and informs thermal design margining-especially important in dense layouts or elevated ambient temperatures. SN74LV139ADGVRE4's small footprint necessitates attention to copper pour and airflow.