Texas Instruments SN74LV541ADGVR

Overview

SN74LV541ADGVR from Texas Instruments is an octal non-inverting 3-state buffer/driver IC designed for bus interface and address register buffering in mixed-voltage systems. It operates across 2 V to 5.5 V V_CC, delivers 5 ns typical propagation delay at 5 V, supports I_off partial-power-down mode, and features dual active-low output-enable inputs (OE1/OE2) for independent group control.

For engineers reviewing the SN74LV541ADGVR datasheet, SN74LV541ADGVR pinout, SN74LV541ADGVR application, or SN74LV541ADGVR equivalent, this device is selected for high-speed, low-voltage bus driving where voltage translation between 2.5 V, 3.3 V, and 5 V logic domains is required - especially in space-constrained industrial and consumer PCB layouts.

Technical Context

The SN74LV541ADGVR implements eight independent non-inverting buffers, each with CMOS-compatible input thresholds and balanced push-pull outputs capable of sourcing/sinking ±16 mA at 5 V. Its dual OE architecture enables two groups of four channels to be independently placed into high-impedance state, supporting bidirectional bus arbitration and memory address isolation.

It integrates I_off protection to block current flow when V_CC = 0 V, satisfies JESD17 latch-up immunity (>250 mA), and maintains stable VOLP (<0.8 V) and VOHV (>2.3 V) under 3.3 V operation - critical for signal integrity in noise-sensitive video and networking interfaces.

Key Specifications

Pinout & Package

SN74LV541ADGVR is supplied in a 20-pin TVSOP (Thin Very Small Outline Package) with 0.65 mm pitch, measuring 6.5 mm × 7.8 mm. The package places all eight inputs (A1–A8) on one side and corresponding outputs (Y1–Y8) on the opposite side to simplify PCB routing and minimize crosstalk.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal 3-state buffer applications.

Compared with SN74LVC244APW and 74LVX244M, SN74LV541ADGVR uniquely combines dual active-low OE control, 2 V minimum supply, I_off protection, and TVSOP packaging - making it the only option for compact, hot-pluggable, mixed-voltage bus architectures requiring per-group enable granularity.

Availability

SN74LV541ADGVR is available at Aetrix Electronics and suitable for smart grid endpoints, surveillance camera modules, set-top box signal routing, and network switch control plane applications requiring stable component supply across extended temperature ranges (–40°C to 125°C).

Supply support for SN74LV541ADGVR 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 leader delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.

The SN74LV541ADGVR belongs to TI's LV logic family, engineered for low-voltage, high-speed bus interfacing in space-constrained and thermally demanding applications - particularly where mixed-supply domain bridging and robust ESD immunity are essential.

FAQ

What is the maximum capacitive load SN74LV541ADGVR can drive while maintaining specified timing?

SN74LV541ADGVR is characterized for loads up to 50 pF across all V_CC levels (2.5 V, 3.3 V, 5 V). At 50 pF and 5 V, t_pd remains ≤6 ns and t_dis/t_en stay within 8 ns/10.5 ns limits. Driving >50 pF increases propagation delay nonlinearly and may violate setup/hold margins in synchronous interfaces - TI recommends limiting total trace + receiver capacitance to ≤50 pF for guaranteed spec compliance.

How should unused inputs be terminated on SN74LV541ADGVR?

All unused inputs on SN74LV541ADGVR must be tied to either V_CC or GND to prevent floating states that cause excessive ICC, oscillation, or EMI. TI specifies a 10-kΩ pull-up or pull-down resistor as optimal - it provides sufficient noise immunity while minimizing static current (≤0.5 µA at 3.3 V). Direct connection is acceptable if the input will never be driven externally.

Does SN74LV541ADGVR support hot-swap insertion when V_CC is unpowered?

Yes. SN74LV541ADGVR incorporates I_off circuitry that disables all outputs when V_CC = 0 V, limiting leakage to ≤5 µA per pin. This prevents back-current flow from live system buses into the unpowered device - a critical feature for hot-pluggable modules in smart grid and telecom infrastructure where SN74LV541ADGVR is commonly deployed.

What is the function of the dual OE inputs (OE1 and OE2) on SN74LV541ADGVR?

OE1 and OE2 are active-low enable inputs controlling two independent groups of four buffers: OE1 governs Y1–Y4 (with A1–A4), and OE2 governs Y5–Y8 (with A5–A8). Both must be LOW for their respective outputs to reflect inputs; if either is HIGH, its four outputs enter high-impedance state. This enables segmented bus arbitration - for example, isolating memory address vs. data lines in a single-package solution.

Can SN74LV541ADGVR be used to translate between 1.8 V and 3.3 V logic domains?

No. While SN74LV541ADGVR accepts input voltages up to 5.5 V regardless of V_CC, its input threshold is defined relative to V_CC (VIH ≈ 0.7×V_CC, VIL ≈ 0.3×V_CC). At V_CC = 3.3 V, VIH(min) = 2.31 V - insufficient to reliably recognize 1.8 V HIGH signals. For true 1.8 V ↔ 3.3 V translation, a dedicated level shifter like TXB0108 is required; SN74LV541ADGVR is intended for same-domain buffering or 2.5 V/3.3 V/5 V interoperation.