NXP Semiconductors 74LVC139PW/AUJ

Overview

74LVC139PW/AUJ from Nexperia is a dual 2-to-4 line decoder/demultiplexer IC with active-low enable inputs, Schmitt-trigger inputs for noise immunity, overvoltage-tolerant inputs up to 5.5 V, and operation across 1.2 V to 3.6 V supply. It delivers mutually exclusive outputs and supports mixed-voltage translation between 3.3 V and 5 V systems in address decoding and data routing applications.

For engineers reviewing the 74LVC139PW/AUJ datasheet, 74LVC139PW/AUJ pinout, 74LVC139PW/AUJ application, or 74LVC139PW/AUJ equivalent, this page provides verified functional identity, TSSOP16 package mapping, propagation delay (≤7.0 ns at 3.3 V), output drive capability (±24 mA), and two validated alternative part numbers with documented technical differences.

Technical Context

The 74LVC139PW/AUJ integrates two independent decoders, each accepting two binary address inputs (nA0, nA1) and producing four active-low outputs (nY0–nY3). Each decoder features a dedicated active-low enable (nE) that forces all outputs HIGH when asserted - enabling use as a 1-to-4 demultiplexer when nE serves as the data input.

Schmitt-trigger inputs ensure robust operation with slow-rising/falling signals, while overvoltage tolerance (5.5 V) allows interfacing with 5 V logic despite a maximum VCC of 3.6 V. The device complies with JEDEC standards JESD8-7A, JESD8-5A, and JESD8-C/JESD36 across its operating voltage range.

Key Specifications

Pinout & Package

TSSOP16 package (SOT403-1): plastic thin shrink small outline, 16 leads, body width 4.4 mm, 0.65 mm pitch, exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVC139D and SN74LVC139APWR, the 74LVC139PW/AUJ offers optimal thermal performance in space-constrained designs via TSSOP16, full 1.2 V–3.6 V operation for ultra-low-power systems, and Nexperia's validated 5.5 V input tolerance - making it the preferred choice for modern mixed-voltage embedded controllers.

Availability

74LVC139PW/AUJ is available at Aetrix Electronics and suitable for memory address decoding, peripheral selection logic, logic-level translation, and demultiplexed signal routing requiring stable component supply across industrial temperature ranges.

Supply support for 74LVC139PW/AUJ 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, analog, and MOSFET solutions, with leadership in advanced packaging and automotive-qualified components.

The 74LVC139PW/AUJ belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, designed specifically for energy-efficient, mixed-voltage digital interfacing in industrial, computing, and consumer electronics.

FAQ

What is the minimum supply voltage supported by the 74LVC139PW/AUJ?

The 74LVC139PW/AUJ operates down to 1.2 V, enabling integration into ultra-low-power systems such as battery-operated sensors or energy-harvesting nodes. This minimum VCC is explicitly specified in Table 5 (Recommended Operating Conditions) and validated across the full -40 °C to +125 °C temperature range. At 1.2 V, propagation delay increases to ≤14 ns, and output drive capability reduces proportionally - design margins must account for these trade-offs.

Does the 74LVC139PW/AUJ support true 5 V input compatibility?

Yes - the 74LVC139PW/AUJ accepts input voltages up to 5.5 V regardless of VCC level, as confirmed in Table 4 (Limiting Values) and Table 5. This overvoltage tolerance allows direct connection to 5 V TTL or CMOS outputs while powered from 1.8 V or 2.5 V supplies, eliminating external level shifters in mixed-voltage systems. Input leakage remains within ±20 μA at VI = 5.5 V and VCC = 3.6 V.

How does the Schmitt-trigger input functionality benefit real-world designs using the 74LVC139PW/AUJ?

Schmitt-trigger inputs on the 74LVC139PW/AUJ provide hysteresis (typically 0.3–0.5 V) that rejects noise and prevents multiple transitions on slow-rising signals - critical when interfacing with mechanical switches, long PCB traces, or RC-filtered control lines. This eliminates need for external debounce circuitry and ensures deterministic decoding even with edge-rate violations below 10 ns/V, as specified in Table 5.

Can the 74LVC139PW/AUJ be used as a 1-to-4 demultiplexer, and how is that configured?

Yes - each enable input (1E or 2E) can serve as the data input for a 1-to-4 demux. With the corresponding enable held LOW, the address inputs (1A0/1A1 or 2A0/2A1) select which output (1Y0–1Y3 or 2Y0–2Y3) mirrors the enable pin's state. For example, asserting 1E = LOW and setting 1A1:A0 = 10 routes the signal to 1Y2. This configuration is explicitly described in Section 1 (General Description) and Fig. 2(a).

What is the thermal derating behavior of the 74LVC139PW/AUJ in its TSSOP16 package?

The 74LVC139PW/AUJ in TSSOP16 (SOT403-1) has a total power dissipation limit of 500 mW at Tamb ≤ 91 °C, derating linearly at 8.5 mW/K above that temperature. At 125 °C ambient, maximum allowable Ptot drops to approximately 215 mW. This derating curve is defined in Table 4, Note [3], and must be applied when calculating worst-case junction temperature in thermally constrained enclosures or high-density PCB layouts.