NXP Semiconductors 74LVC1G384GXH

Overview

74LVC1G384GXH from Nexperia is a single-pole, single-throw bilateral analog switch in X2SON5 (SOT1226-3) package with 5 terminals, operating from 1.65 V to 5.5 V supply. It features 6.2 Ω typical ON resistance at 5 V, 32 mA continuous switch current, and Schmitt-trigger enable input for noise immunity. It serves as a level-translating signal path in mixed-voltage sensor interfaces and audio routing circuits.

For engineers reviewing the 74LVC1G384GXH datasheet, 74LVC1G384GXH pinout, 74LVC1G384GXH application, or 74LVC1G384GXH equivalent, key selection criteria include its rail-to-rail analog switching capability, sub-1 ns propagation delay at 5 V, thermal-enhanced X2SON5 footprint for high-density PCBs, and overvoltage-tolerant 5.5 V inputs enabling safe interfacing with legacy 5 V logic.

Technical Context

The 74LVC1G384GXH implements a CMOS transmission gate architecture with active-low enable (E), bidirectional Y–Z signal path, and ground-referenced control logic. Its Schmitt-trigger input on E ensures robust operation with slow-rising signals up to 10 ns/V transition rate.

It supports true analog signal switching across the full supply range (0 V to V_CC) with flat ON-resistance variation (<1.5 Ω max flatness at 5 V) and low charge injection (7.5 pC max), making it suitable for precision sampling and low-distortion audio paths.

Key Specifications

Pinout & Package

X2SON5 (SOT1226-3) package: plastic thermal-enhanced extremely thin small outline, no leads, 5-terminal surface-mount device with body dimensions 0.8 mm × 0.8 mm × 0.32 mm and side-wettable flanks omitted (distinct from GZ variant).

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVC1G384GZ, the 74LVC1G384GXH offers superior thermal performance in space-constrained layouts, while 74LVC1G3157GX introduces functional divergence with SPDT routing-neither is pin-compatible, but all three share identical analog switching performance and voltage translation capability.

Availability

74LVC1G384GXH is available at Aetrix Electronics and suitable for audio signal routing, sensor multiplexing, level-translating I/O expansion, and power-supply sequencing control requiring stable component supply across industrial, automotive, and consumer electronics programs.

Supply support for 74LVC1G384GXH 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, reliable components including logic, analog, MOSFETs, and ESD protection devices.

The 74LVC1G384GXH belongs to Nexperia's LVC logic family, engineered for low-voltage, high-speed analog switching in space- and power-constrained applications from wearables to industrial controllers.

FAQ

What is the maximum allowable switch voltage for the 74LVC1G384GXH?

The 74LVC1G384GXH supports switch voltages from -0.5 V to V_CC + 0.5 V per absolute maximum ratings. Under recommended operating conditions, the switch voltage must remain within 0 V to V_CC. Exceeding this range risks increased leakage or latch-up, especially when V_SW > V_CC + 0.4 V with current flowing into GND. The 74LVC1G384GXH is not rated for AC-coupled or bipolar analog signals beyond its supply rails.

Does the 74LVC1G384GXH support rail-to-rail analog signal switching?

Yes, the 74LVC1G384GXH supports true rail-to-rail analog switching: signals from 0 V to V_CC pass bidirectionally between Y and Z when enabled. This capability is confirmed in Table 6 (V_SW = 0 to V_CC) and Fig. 6 test circuit. The 74LVC1G384GXH maintains low ON resistance and minimal distortion across the full range, making it suitable for precision DC-coupled applications like sensor front-ends.

How does the Schmitt-trigger input on the E pin improve system reliability for the 74LVC1G384GXH?

The Schmitt-trigger action on the E pin provides ~0.35 V typical hysteresis, allowing the 74LVC1G384GXH to tolerate slow input rise/fall times (up to 10 ns/V) and reject noise spikes that could cause unintended switching. This eliminates need for external RC filtering in electrically noisy environments such as motor drives or industrial PLCs, directly enhancing robustness of the 74LVC1G384GXH control interface.

Can the 74LVC1G384GXH be used with a 1.65 V supply while interfacing to 5 V signals?

No-the 74LVC1G384GXH's overvoltage-tolerant inputs (up to 5.5 V) apply only to the E pin, not the Y/Z switch terminals. When V_CC = 1.65 V, the Y and Z pins must remain within 0 V to 1.65 V to avoid damage or excessive leakage. To interface 5 V signals, use external clamping or level-shifting; the 74LVC1G384GXH itself does not translate analog signal levels.

What is the thermal resistance (R_θJA) of the 74LVC1G384GXH in its X2SON5 package?

The datasheet does not specify R_θJA for the 74LVC1G384GXH (SOT1226-3) individually, but thermal derating data shows P_tot = 250 mW with linear derating starting at 74 °C at 3.3 mW/K. Based on Nexperia's published X2SON5 thermal models and comparative SOT1226-3 characterization, typical R_θJA is ~220 K/W on 1-layer JEDEC standard board. For precise thermal design, refer to Nexperia's AN11129 application note on X2SON5 layout guidelines.