Texas Instruments SN74LVC1G18YEPR

Overview

SN74LVC1G18YEPR from Texas Instruments is a 1-of-2 noninverting demultiplexer with 3-state deselected outputs, designed for 1.65-V to 5.5-V V_CC operation. It routes input data A to output Y0 (when select S = L) or Y1 (when S = H), supports ±24-mA drive at 3.3 V, achieves 3.4 ns max t_pd at 3.3 V, and features I_off for partial-power-down mode - used in portable logic level translation and low-pin-count signal routing.

For engineers reviewing the SN74LVC1G18YEPR datasheet, SN74LVC1G18YEPR pinout, SN74LVC1G18YEPR application, or SN74LVC1G18YEPR equivalent, key selection criteria include its 6-pin WCSP (YEP) package, 3-state output behavior, V_I tolerance up to 5.5 V, low 10-µA max I_CC, and compatibility with 1.65–5.5-V supply rails across industrial temperature range (–40°C to 85°C).

Technical Context

This device implements a single-pole double-throw (SPDT) noninverting demux function using CMOS logic with rail-to-rail input voltage acceptance (–0.5 V to 6.5 V). Its 3-state outputs are independently controlled by the S input, with no internal inversion between A and selected output.

The SN74LVC1G18YEPR integrates I_off circuitry that disables both outputs when V_CC = 0 V, blocking current backflow during partial power-down. It meets JESD 78 Class II latch-up performance (>100 mA) and exceeds JESD 22 ESD ratings: 2000-V HBM, 200-V MM, and 1000-V CDM.

Key Specifications

Pinout & Package

SN74LVC1G18YEPR uses a 6-ball NanoFree™ WCSP (YEP) package with 0.23-mm large solder bumps, bottom-side marking, and Pb-free (SnAgCu) finish. Pin 1 is identified by solder-bump composition (· = Pb-free).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G18YEPR, the DCKR and DBVR alternatives trade ultra-small footprint and board-area efficiency for standardized packaging and broader assembly ecosystem support - all three share identical functional behavior, voltage ranges, and timing performance.

Availability

SN74LVC1G18YEPR is available at Aetrix Electronics and suitable for portable electronics, industrial sensor nodes, and automotive body control modules requiring stable component supply and long-term lifecycle continuity.

Supply support for SN74LVC1G18YEPR 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

Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions, with leadership in low-power logic, precision analog, and high-reliability interface products.

The SN74LVC1G18YEPR belongs to TI's LVC logic family, engineered for low-voltage, high-speed, and mixed-signal interoperability in space- and power-constrained applications such as wearables, industrial IoT, and automotive sub-systems.

FAQ

What is the operating temperature range for SN74LVC1G18YEPR?

The SN74LVC1G18YEPR is rated for operation from –40°C to +85°C ambient temperature, matching industrial-grade requirements. This range is validated per the recommended operating conditions table in the SCES406G datasheet and applies specifically to the YEP package variant. All electrical characteristics, including propagation delay and output drive, are guaranteed across this full range when V_CC is maintained within 1.65 V to 5.5 V.

Does SN74LVC1G18YEPR support level shifting between different supply voltages?

Yes, SN74LVC1G18YEPR supports level shifting: its inputs accept voltages from –0.5 V to 5.5 V regardless of V_CC, enabling connection to higher-voltage controllers (e.g., 5-V MCU GPIO) while powered from a lower V_CC (e.g., 1.8 V or 3.3 V). The outputs swing rail-to-rail relative to the applied V_CC, making SN74LVC1G18YEPR suitable for bidirectional voltage translation in select configurations.

What does "NRND" status mean for SN74LVC1G18YEPR, and is it still available for purchase?

"NRND" (Not Recommended for New Designs) indicates Texas Instruments does not recommend SN74LVC1G18YEPR for new projects due to roadmap evolution, but the part remains in active production to support existing customers. Aetrix Electronics maintains inventory and fulfills orders for SN74LVC1G18YEPR with full traceability and documented sourcing - ensuring continuity for legacy designs and maintenance programs.

How does the I_off feature function in SN74LVC1G18YEPR?

The I_off circuitry in SN74LVC1G18YEPR automatically disables both Y0 and Y1 outputs when V_CC = 0 V, limiting leakage current to ±10 µA maximum. This prevents damaging current backflow from live signal lines into a powered-down system section - a critical requirement in partial-power-down architectures like those found in battery-backed real-time clocks or modular sensor hubs using SN74LVC1G18YEPR.

Can SN74LVC1G18YEPR be used in place of SN74LVC1G18YZPR?

SN74LVC1G18YEPR and SN74LVC1G18YZPR are functionally identical but differ in solder-bump composition: YEPR uses SnPb bumps (lead-based), while YZPR uses SnAgCu (Pb-free). They share the same YEP/YZP package outline, pinout, and electrical specifications. Substitution requires verification of end-equipment RoHS compliance and assembly process compatibility - SN74LVC1G18YEPR is not a drop-in replacement if Pb-free manufacturing is mandated.