Nexperia USA Inc. 74LVC157AD-Q100J

Overview

74LVC157AD-Q100 from Nexperia is an automotive-grade quad 2-input multiplexer with active-low enable (E), common select input (S), and true-output logic. It operates from 1.2 V to 3.6 V supply, tolerates 5 V inputs, and delivers propagation delays as low as 1.0 ns at 3.3 V. Designed for mixed-voltage data routing in engine control units and ADAS domain controllers, it supports translation between 3.3 V and 5 V logic domains.

For engineers reviewing the 74LVC157AD-Q100 datasheet, 74LVC157AD-Q100 pinout, 74LVC157AD-Q100 application, or 74LVC157AD-Q100 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, -40 °C to +125 °C operating range, 5 V-tolerant inputs, SO16 package with side-wettable flanks, and guaranteed output skew ≤1.5 ns.

Technical Context

This device implements four independent 2:1 multiplexers sharing one common select (S) and one active-low enable (E). When E is HIGH, all four outputs (1Y–4Y) are forced LOW regardless of S or data inputs - a hard disable function critical for fail-safe bus arbitration.

Each multiplexer selects between two data sources (nI0/nI1) based on S level, presenting non-inverted output. Its CMOS architecture enables direct TTL-level interfacing and supports dynamic operation up to 200 MHz (at VCC = 3.3 V, CL = 30 pF), with power dissipation capacitance (CPD) of 15.9 pF enabling accurate dynamic power estimation.

Key Specifications

Pinout & Package

74LVC157AD-Q100 uses the SO16 (SOT109-1) plastic small outline package: 16-pin, 3.9 mm body width, gull-wing leads, and side-wettable flanks for AOI-compatible solder joint inspection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC157APWR and 74LVC157APW-Q100, the 74LVC157AD-Q100 uniquely combines AEC-Q100 Grade 1 compliance with SO16 mechanical robustness and side-wettable flanks - making it the only choice for production automotive modules requiring AOI traceability and under-hood temperature resilience.

Availability

74LVC157AD-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, and body control modules requiring stable component supply across automotive production lifecycles.

Supply support for 74LVC157AD-Q100 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 for automotive, industrial, and consumer markets.

The 74LVC157A-Q100 belongs to Nexperia's automotive-qualified LVC logic family, engineered specifically for signal routing in harsh-environment vehicle electronics with emphasis on voltage translation, ESD resilience, and long-term supply stability.

FAQ

Can 74LVC157AD-Q100 operate with a 1.2 V supply while accepting 5 V inputs?

Yes. The device is specified for VCC = 1.2 V to 3.6 V and features 5 V tolerant inputs (VI = 0–5.5 V), verified per JESD8-7A/JESD8-5A standards. At 1.2 V supply, VIH is 1.08 V and VIL is 0.12 V, ensuring reliable logic thresholds even with 5 V drive sources.

What is the maximum toggle frequency supported at 3.3 V supply?

At VCC = 3.3 V and CL = 30 pF, the maximum toggle frequency is approximately 200 MHz, derived from tpd(max) = 6.5 ns and minimum pulse width constraints. This is validated in the dynamic characteristics table under "nI0, nI1 to nY" propagation delay conditions.

Does the SO16 package (SOT109-1) require special PCB layout considerations?

Yes. The SO16 package features side-wettable flanks, requiring exposed copper pads on the PCB footprint aligned to the package edges for AOI visibility. Thermal pad (pin 8 GND) must connect to a solid ground plane via ≥4 thermal vias to maintain junction temperature within limits at full load.

How does the enable (E) pin behave during power-up sequencing?

When VCC ramps from 0 V, the E pin remains inactive (HIGH) until VCC exceeds ~0.8 V, forcing all outputs LOW. Once VCC stabilizes above 1.2 V, E becomes functional. This behavior prevents spurious outputs during brown-out or cold-start conditions in automotive systems.