Nexperia USA Inc. 74LVC139PW,118

Overview

74LVC139PW,118 from Nexperia is a dual 2-to-4 line decoder/demultiplexer in TSSOP16 package, operating from 1.2 V to 3.6 V supply, featuring active-low enable inputs (1E, 2E), Schmitt-trigger inputs for noise immunity, and overvoltage-tolerant inputs up to 5.5 V-enabling mixed-voltage interfacing in industrial control logic and address decoding circuits.

For engineers reviewing the 74LVC139PW,118 datasheet, 74LVC139PW,118 pinout, 74LVC139PW,118 application, or 74LVC139PW,118 equivalent, key selection criteria include propagation delay (≤7.0 ns at 3.3 V), output drive capability into 50 Ω transmission lines at 125 °C, mutual exclusivity of decoded outputs, and JEDEC-compliant voltage-level translation across 1.65–3.6 V domains.

Technical Context

The device integrates two independent decoders, each accepting two binary address inputs (1A0/1A1 and 2A0/2A1) to assert exactly one of four active-low outputs (1Y0–1Y3 and 2Y0–2Y3) when its respective enable input (1E or 2E) is LOW. Outputs remain HIGH when enable is HIGH, supporting demultiplexing by routing a single data input through the enable path.

Schmitt-trigger action on all inputs ensures robust operation with slow-rising/falling signals, while overvoltage tolerance (up to 5.5 V) allows direct interface with 5 V TTL logic despite a 3.3 V nominal supply. Static current consumption is ≤40 μA at 3.6 V, and dynamic power is governed by CPD = 16.4 pF at 3.3 V.

Key Specifications

Pinout & Package

TSSOP16 plastic thin shrink small outline package (SOT403-1), 16-pin, body width 4.4 mm, 0.65 mm pitch, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LV139APWR, the 74LVC139PW,118 offers lower power and faster timing at 3.3 V, while the 74AHC139PW,118 trades 1.2 V compatibility for superior speed at 5 V-making the LVC version optimal for modern low-voltage, mixed-signal embedded systems.

Availability

74LVC139PW,118 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller peripheral address decoding, legacy 5 V to 3.3 V system interface, and test equipment signal routing requiring stable component supply across extended temperature ranges.

Supply support for 74LVC139PW,118 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 delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial, automotive, and consumer electronics.

The 74LVC logic family targets low-voltage, high-noise-immunity digital interfacing-designed specifically for mixed-supply systems requiring voltage translation, robust timing, and extended temperature operation without external components.

FAQ

Can 74LVC139PW,118 operate reliably at 1.2 V supply?

Yes. The device is fully specified down to 1.2 V VCC, with functional operation confirmed across −40 °C to +125 °C. At 1.2 V, propagation delay increases to ≤14 ns, and output drive is reduced-but all logic functions, Schmitt-trigger thresholds, and mutual exclusivity remain guaranteed per datasheet Table 6 and Table 7.

What is the maximum capacitive load the outputs can drive while maintaining timing specs?

The device is characterized with 30 pF (for VCC ≤ 2.7 V) and 50 pF (for VCC ≥ 3.0 V) loads per output, as defined in Table 9 test conditions. Driving >50 pF will increase propagation delay beyond the 7.0 ns max spec at 3.3 V and may cause output skew exceeding 1.5 ns-designers should verify timing margins with actual PCB trace capacitance and termination.

How does the enable input function in demultiplexer mode?

When used as a 1-to-4 demultiplexer, one enable input (e.g., 1E) serves as the data input, while the corresponding address inputs (1A0, 1A1) select which of the four outputs (1Y0–1Y3) mirrors the enable state-LOW on 1E passes through as LOW on the selected output, while all others remain HIGH. This is explicitly supported by the functional table and Fig. 2(a).

Is thermal pad soldering required for the TSSOP16 package (SOT403-1)?

No. The TSSOP16 package (SOT403-1) has no exposed thermal pad-unlike the DHVQFN variant (SOT763-1). Its thermal performance relies on standard PCB copper pour under pins 8 (GND) and 15 (VCC), with Ptot derating beginning at 91 °C at 8.5 mW/K. No special thermal land or solder paste is needed beyond standard SMT reflow profiles.