Diodes Incorporated 74LVC241AQ20-13

Overview

74LVC241AQ20-13 from Diodes Incorporated is an octal noninverting buffer/line driver with dual 3-state outputs, designed for bus driving and signal isolation in mixed-voltage systems. It operates from 1.65V to 3.6V, supports 5.5V-tolerant inputs, sinks or sources 24mA at V_CC = 3.0V, and features IOFF circuitry for partial power-down protection. Used in notebook I/O expansion and peripheral interface buses.

For engineers reviewing the 74LVC241AQ20-13 datasheet, 74LVC241AQ20-13 pinout, 74LVC241AQ20-13 application, or 74LVC241AQ20-13 equivalent, this page delivers verified package mapping (V-QFN4525-20), confirmed 20-pin terminal roles, real-world timing specs (t_PD ≤ 8.3 ns @ 3.3V), IOFF leakage (< ±20 µA), and Schmitt-trigger input behavior - all critical for low-noise, mixed-supply logic interfacing.

Technical Context

The device integrates two independent 4-bit buffer sections (1A→1Y and 2A→2Y), each controlled by dedicated output-enable pins (1OE and 2OE). Outputs enter high-impedance state when 1OE is high or 2OE is low, enabling bidirectional bus control without external direction logic.

Its IOFF circuit actively disables outputs during power-down, blocking backflow current even when V_CC = 0V and inputs remain at 5.5V. All inputs include Schmitt-trigger action (typical hysteresis ≈ 0.3V), ensuring noise immunity on slow-rising signals in industrial environments.

Key Specifications

Pinout & Package

V-QFN4525-20 (2.5mm × 4.5mm × 0.95mm, 0.50 mm pitch, exposed thermal pad) with 20 terminals; JEDEC-compliant footprint per AP02001.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal buffer applications.

Compared with SN74LVC241APWR, the 74LVC241AQ20-13 offers superior thermal performance (67 vs. 74°C/W) and smaller footprint, while 74LVC244AQ20-13 sacrifices independent bank control for simplified routing - making the Q20 variant optimal for space-limited, thermally demanding dual-bus applications.

Availability

74LVC241AQ20-13 is available at Aetrix Electronics and suitable for PC notebook I/O expansion, industrial PLC backplane interfaces, and automotive infotainment display links requiring stable component supply, consistent QFN-20 sourcing, and full lifecycle support.

Supply support for 74LVC241AQ20-13 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, low-power solutions for computing, industrial, and automotive markets.

The 74LVC series targets low-voltage, mixed-supply logic interfacing - designed specifically for noise-immune, power-efficient signal translation in space-constrained embedded systems.

FAQ

What is the maximum input voltage the 74LVC241AQ20-13 can tolerate on its A and OE pins?

The device accepts up to 5.5V on all input pins regardless of V_CC level, verified per datasheet Section "Recommended Operating Conditions" (VI = 0 to 5.5V). This allows direct connection to 5V peripherals while operating from 1.65–3.6V supplies, eliminating external level shifters in mixed-voltage designs.

Does the 74LVC241AQ20-13 support partial power-down, and how is it implemented?

Yes - the IOFF circuit disables outputs when V_CC = 0V, limiting leakage to ±20 µA maximum (per Electrical Characteristics table). This prevents damaging current backflow from live inputs into an unpowered device, a requirement for hot-swap and modular system architectures.

How does the Schmitt-trigger input action benefit system-level noise immunity?

Schmitt-trigger inputs provide ~0.3V hysteresis, meaning the rising threshold (VIH) and falling threshold (VIL) differ by that amount. This rejects noise spikes and ground bounce under ±150mV, ensuring reliable logic transitions on slow or noisy control lines like 1OE/2OE in industrial environments.

What is the thermal resistance (θ_JA) of the V-QFN4525-20 package, and why does it matter?

The V-QFN4525-20 package has θ_JA = 67°C/W (per Package Characteristics table), 7°C/W lower than the TSSOP-20 variant. This directly improves power handling: at 50 mW dissipation, junction temperature rise is 3.4°C lower, enhancing reliability in compact, sealed enclosures like medical or automotive modules.