NXP Semiconductors 74LVC2G3157GMX

Overview

The 74LVC2G3157 from Nexperia is a dual low-ohmic SPDT analog switch configured as two independent 2:1 multiplexer/demultiplexer channels, each with Schmitt-trigger select inputs, 10.4 Ω typical ON resistance at 2.7 V, ±32 mA switch current capability, and operation across 1.65 V to 5.5 V supply. It enables bidirectional signal routing in precision audio paths, sensor interface multiplexing, and mixed-signal data acquisition systems.

For engineers reviewing the 74LVC2G3157 datasheet, 74LVC2G3157 pinout, 74LVC2G3157 application, or 74LVC2G3157 equivalent, key selection criteria include guaranteed break-before-make timing (≤0.5 ns), <0.1 % THD at 1 kHz with 3 V supply, isolation >−54 dB between switches at 1 MHz, and −40 °C to +125 °C extended temperature qualification.

Technical Context

This device implements two independent CMOS transmission gates with rail-to-rail analog signal handling, Schmitt-trigger select inputs for noise immunity across full V_CC range, and break-before-make switching architecture verified by design per Table 9. Each channel supports bidirectional signal flow between common terminal (nZ) and either of two independent terminals (nY0/nY1), controlled by a dedicated digital select input (nS).

Switch performance is characterized across voltage (1.65–5.5 V), temperature (−40 °C to +125 °C), and signal conditions: ON-resistance flatness ≤1.5 Ω at 5 V, charge injection ≤7.5 pC at 5.5 V, and crosstalk ≤−54 dB between channels at 1 MHz - all specified under recommended operating conditions without derating.

Key Specifications

Pinout & Package

TSSOP10 plastic thin shrink small outline package (SOT552-1), 3 mm body width, 0.5 mm pitch, 10-pin surface-mount with pin 1 indicator in lower-left corner below marking code 'YJ'.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog switch applications.

Compared with TS5A23157DCUR and ADG732BRUZ, the 74LVC2G3157 delivers dual-channel integration with guaranteed break-before-make timing, extended temperature qualification, and Schmitt-trigger noise immunity - making it optimal for robust, low-overhead analog routing in industrial and portable systems where reliability and simplicity are prioritized over ultra-low R_ON or high channel density.

Availability

The 74LVC2G3157 is available at Aetrix Electronics and suitable for industrial automation, portable medical devices, and test instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVC2G3157 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 essential semiconductors for automotive, industrial, and consumer markets.

The 74LVC2G3157 belongs to Nexperia's LVC logic family designed for low-voltage, high-speed analog and digital signal switching with robust ESD protection and wide supply flexibility.

FAQ

What is the maximum allowable switch voltage for the 74LVC2G3157?

The 74LVC2G3157 supports switch voltages from −0.5 V to V_CC + 0.5 V in both enable and disable modes, as defined in Table 5. This rail-to-rail analog capability allows signals to swing fully between ground and supply without clipping, provided the absolute maximum ratings (−0.5 V to +6.5 V) are not exceeded. The 74LVC2G3157 maintains low distortion and flat ON resistance across this range when operated within recommended conditions.

Does the 74LVC2G3157 support bidirectional signal flow?

Yes, the 74LVC2G3157 supports fully bidirectional analog signal flow on all switch terminals (nZ, nY0, nY1). Each channel functions identically in either direction, with identical ON resistance, capacitance, and leakage characteristics regardless of signal source/sink configuration. This makes the 74LVC2G3157 suitable for both multiplexing and demultiplexing topologies without performance trade-offs.

How does the Schmitt-trigger input improve noise immunity in the 74LVC2G3157?

The Schmitt-trigger action on both select inputs (1S and 2S) provides hysteresis of typically 0.3 V to 0.5 V across the 1.65–5.5 V supply range, rejecting slow-rising or noisy control signals that could cause metastability or unintended switching. This eliminates the need for external RC filtering and ensures reliable channel selection even in electrically noisy industrial environments - a key differentiator of the 74LVC2G3157 versus standard CMOS-input analog switches.

What is the thermal derating behavior of the 74LVC2G3157 in TSSOP10 package?

For the SOT552-1 (TSSOP10) package, the 74LVC2G3157 has a total power dissipation limit of 250 mW at T_amb ≤ 120 °C, with linear derating of 8.3 mW/K above that temperature. At +125 °C ambient, the maximum allowable P_tot is reduced to 208 mW. This derating ensures safe operation under worst-case industrial thermal conditions while maintaining specified electrical performance for the 74LVC2G3157.

Can the 74LVC2G3157 be used with 5 V logic while powered from 3.3 V?

Yes - the 74LVC2G3157 select inputs accept voltages up to 5.5 V regardless of V_CC, enabling direct interfacing with 5 V logic controllers while operating the analog switch core from a 3.3 V supply. This eliminates level shifters in mixed-voltage systems. The 74LVC2G3157 maintains full functionality and specified timing (e.g., t_en ≤ 5.7 ns at 3.3 V) under this condition, as confirmed in Table 6 and Section 2.