Nexperia USA Inc. 74LVC1G18GV,125

Overview

74LVC1G18GV,125 from Nexperia is a single 1-of-2 non-inverting demultiplexer with 3-state outputs, designed for signal routing in mixed-voltage digital systems. It routes buffered input A to output 1Y (S = LOW) or 2Y (S = HIGH), while the deselected output enters high-impedance OFF-state. Operates from 1.65 V to 5.5 V supply, tolerates 5.5 V inputs, and supports partial power-down via IOFF circuitry - used in level translation between 3.3 V and 5 V logic domains.

For engineers reviewing the 74LVC1G18GV,125 datasheet, 74LVC1G18GV,125 pinout, 74LVC1G18GV,125 application, or 74LVC1G18GV,125 equivalent, key selection criteria include its dual-voltage compatibility, Schmitt-trigger inputs for noise immunity, ±24 mA drive capability at 3.0 V, 3.0 ns typical propagation delay (VCC = 3.3 V), and guaranteed operation from –40 °C to +125 °C.

Technical Context

This device implements a combinational 1-to-2 demultiplexing function with non-inverting data path and independent 3-state control via select input S. Its IOFF circuit disables outputs during power-down, blocking backflow current when VCC = 0 V. All inputs feature Schmitt-trigger action, enabling robust operation with slow-rising/falling signals and improving noise margin.

It complies with JEDEC standards JESD8-7 (1.65–1.95 V), JESD8-5 (2.3–2.7 V), JESD8C (2.7–3.6 V), and JESD36 (4.5–5.5 V). Static and dynamic parameters are fully characterized across –40 °C to +125 °C, with propagation delay as low as 2.3 ns (VCC = 5.5 V) and disable time of 2.2 ns (VCC = 5.5 V).

Key Specifications

Pinout & Package

74LVC1G18GV,125 uses the SC-74 (SOT457) plastic surface-mounted package: 6-lead, 1.7 mm body width, 0.95 mm height, 0.65 mm lead pitch. Pin 1 indicator is located below the marking "V18" on the lower-left corner.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 1-of-2 demultiplexer applications.

Compared with SN74LVC1G18DBVR, the 74LVC1G18GV,125 offers guaranteed +125 °C operation and documented IOFF behavior - critical for automotive and industrial thermal environments. Against 74LVC1G19GV,125, it preserves signal polarity, avoiding added gate delays or layout complexity from external inverters.

Availability

74LVC1G18GV,125 is available at Aetrix Electronics and suitable for industrial automation interfaces, automotive body electronics, and medical data acquisition systems requiring stable component supply across extended temperature ranges and mixed-voltage interoperability.

Supply support for 74LVC1G18GV,125 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, discrete, and MOSFET solutions optimized for reliability and energy efficiency.

The 74LVC1G18 belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, engineered for low-power, wide-supply-voltage operation in space-constrained, thermally demanding embedded systems.

FAQ

What is the maximum clock/data frequency supported by 74LVC1G18GV,125?

The device does not operate as a clocked element but as a combinational demultiplexer. Its usable signal bandwidth is determined by propagation delay (as low as 2.3 ns at VCC = 5.5 V) and load capacitance. With 30 pF load and 5.5 V supply, it reliably handles data edges up to ~200 MHz, assuming clean signal integrity and proper termination.

Can 74LVC1G18GV,125 be used with 1.8 V microcontrollers driving 5 V peripherals?

Yes - its overvoltage-tolerant inputs accept 5.5 V regardless of VCC setting, and its 1.65–5.5 V supply range allows direct 1.8 V operation. When VCC = 1.8 V, outputs swing rail-to-rail (0 V to 1.8 V), so external level-shifting is required to drive 5 V peripherals. The device acts as a direction-controlled signal gate, not a bidirectional translator.

How does the IOFF feature behave during power sequencing?

When VCC drops to 0 V, the IOFF circuit actively disables both outputs (1Y and 2Y), forcing them into high-impedance state regardless of S or A input voltages. This prevents current backflow from live I/O lines into the unpowered IC, protecting both the device and upstream drivers during asymmetric power-down sequences.

Is the 74LVC1G18GV,125 pin-compatible with older 74LVC1G18 variants like GW or DCKR packages?

No - the 74LVC1G18GV,125 uses SOT457 (SC-74), while 74LVC1G18GW uses SOT363-2 (TSSOP6) and 74LVC1G18DCKR uses SOT-23-6. Though functionally identical and sharing the same pin numbering (S-GND-A-2Y-VCC-1Y), their footprints differ mechanically: SOT457 has 0.65 mm pitch and 1.7 mm width; SOT363-2 has 0.65 mm pitch but 1.25 mm width; SOT-23-6 has 0.95 mm pitch.