NXP Semiconductors 74LVC157APW/AUJ

Overview

74LVC157APW/AUJ from Nexperia is a quad 2-input CMOS multiplexer with independent enable (E) and select (S) inputs, operating from 1.2 V to 3.6 V supply, supporting mixed-voltage translation between 3.3 V and 5 V logic domains, and featuring Schmitt-trigger inputs for noise immunity in industrial control and data routing applications.

For engineers reviewing the 74LVC157APW/AUJ datasheet, 74LVC157APW/AUJ pinout, 74LVC157APW/AUJ application, or 74LVC157APW/AUJ equivalent, this device delivers deterministic 2:1 signal selection per channel with sub-8 ns propagation delay at 3.3 V, overvoltage-tolerant inputs up to 5.5 V, and guaranteed operation from –40 °C to +125 °C in TSSOP16 packaging.

Technical Context

The 74LVC157APW/AUJ implements four independent 2:1 multiplexers sharing common S (select) and E (enable) control lines. Each channel routes either I0 or I1 to its Y output based on S state, while E forces all outputs LOW when HIGH - enabling synchronous channel gating in bus arbitration and signal switching systems.

Its input structure includes Schmitt-trigger thresholds and overvoltage tolerance to 5.5 V, allowing direct interfacing with both LVC-level (1.2–3.6 V) and legacy 5 V TTL/CMOS sources without level shifters. The device complies with JEDEC JESD8-7A, JESD8-5A, and JESD8-C/JESD36 across its full voltage range.

Key Specifications

Pinout & Package

TSSOP16 package (SOT403-1), 4.4 mm body width, 0.65 mm lead pitch, 16-terminal surface-mount outline optimized for high-density PCB layouts and reflow compatibility.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input multiplexer applications.

Compared with SN74LVC157APWR and 74AHC157PW, the 74LVC157APW/AUJ uniquely supports 1.2 V operation, 5.5 V input tolerance, and Schmitt-trigger noise rejection - making it the only option for mixed-voltage, low-power, and electrically harsh applications.

Availability

74LVC157APW/AUJ is available at Aetrix Electronics and suitable for industrial automation, automotive diagnostics, programmable logic interfaces, and test equipment requiring stable component supply across extended temperature and mixed-voltage conditions.

Supply support for 74LVC157APW/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 essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVC157APW/AUJ belongs to Nexperia's LVC logic family, engineered for low-voltage operation, mixed-signal interoperability, and robust performance in thermally demanding and electrically noisy environments.

FAQ

What is the maximum input voltage the 74LVC157APW/AUJ can tolerate?

The 74LVC157APW/AUJ features overvoltage-tolerant inputs rated up to 5.5 V, regardless of VCC level - enabling safe interfacing with 5 V logic sources while operating from as low as 1.2 V. This eliminates external clamping diodes in mixed-voltage systems and is confirmed in Table 4 (Limiting Values) and Section 2 (Features and benefits) of the official Nexperia datasheet Rev. 13.

Does the 74LVC157APW/AUJ support operation at 1.2 V supply?

Yes, the 74LVC157APW/AUJ is fully specified down to 1.2 V supply voltage per Table 5 (Recommended operating conditions) and Table 6 (Static characteristics). At 1.2 V, VIH is guaranteed ≥1.08 V and VOL ≤0.12 V with 100 μA load, enabling use in ultra-low-power IoT edge nodes where energy harvesting or coin-cell operation is required.

How does the enable (E) input function in the 74LVC157APW/AUJ?

The E input in the 74LVC157APW/AUJ is active HIGH: when E = HIGH, all four outputs (1Y–4Y) are forced LOW irrespective of S or input states. When E = LOW, normal multiplexing resumes. This behavior is defined in Table 3 (Function table) and allows synchronized channel blanking in time-critical applications like burst-mode communication or safety shutdown sequences.

Is the 74LVC157APW/AUJ pin-compatible with other 74LVC157 variants?

Yes, the 74LVC157APW/AUJ shares identical pinout and logic function with all 74LVC157A variants (e.g., 74LVC157AD, 74LVC157ABQ) per Section 4.1 (Pinning) and Table 1 (Ordering information). All packages - SO16, TSSOP16, DHVQFN16, DHXQFN16 - maintain consistent pin numbering and signal assignment, enabling drop-in replacement across form factors.

What is the propagation delay of the 74LVC157APW/AUJ at 3.3 V?

At VCC = 3.3 V and Tamb = 25 °C, the typical propagation delay (tpd) of the 74LVC157APW/AUJ is 2.5 ns (nI0/nI1 → nY) and 2.6 ns (S → nY), with maximum values of 5.2 ns and 6.3 ns respectively across –40 °C to +125 °C per Table 7 (Dynamic characteristics). These values are measured under standard test conditions with 30 pF load and ≤2.5 ns input rise/fall times.