Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Texas Instruments SN74F541N

Name: SN74F541N
Brand: Texas Instruments
SKU: SN74F541N
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SN74F541N

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 20-DIP (0.300", 7.62mm)

Datasheet:: SN74F541N.pdf

Description:: IC BUF NON-INVERT 5.5V 20DIP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:380

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

SN74F541N from Texas Instruments is an octal buffer/line driver with 3-state outputs, designed for bus line driving and memory address register buffering in TTL-compatible digital systems. It features dual active-low output-enable inputs (OE1, OE2), 8-bit non-inverting data path, and operates over 0°C to 70°C with V_CC = 4.5–5.5 V. Typical propagation delay is 3.3 ns (t_PLH/t_PHL) at 5 V.

For engineers reviewing the SN74F541N datasheet, SN74F541N pinout, SN74F541N application, or SN74F541N equivalent, key selection considerations include its 20-pin PDIP package, dual 3-state control logic, ±64 mA low-level output drive, bus-hold capability absence, and compatibility with legacy 74F logic families in industrial control and retro-computing interfaces.

Technical Context

The SN74F541N implements a dual-gated 3-state architecture where either OE1 or OE2 high forces all eight Y outputs into high-impedance mode-enabling shared-bus arbitration without external logic. Its input-to-output signal path is strictly non-inverting, with data flow-through pinout (inputs on left, outputs on right) optimizing PCB layout in dense backplane or motherboard designs.

It adheres to standard 74F TTL electrical specifications: V_IL ≤ 0.8 V, V_VIH ≥ 2.0 V, I_OL = 64 mA (min), and I_OH = –15 mA (min) at V_CC = 4.5 V. Output leakage in 3-state mode is ±50 µA, ensuring minimal bus contention during disable.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	4.5 V to 5.5 V - Ensures stable operation across standard 5 V TTL supply tolerances.
Operating Temperature	0°C to 70°C - Qualified for commercial-grade embedded and industrial control applications.
t_PLH/t_PHL	1.5 ns (min) to 6 ns (max) at 5 V - Supports >150 MHz bus toggle rates in point-to-point configurations.
I_OL (Low-level)	64 mA (min) - Drives up to 10 standard TTL loads directly without fanout buffers.
I_OH (High-level)	–15 mA (min) - Sustains valid VOH ≥ 2.0 V under full TTL load conditions.
3-State Leakage	±50 µA - Prevents unintended bus loading when outputs are disabled.
Input Clamp Current	–18 mA - Protects against transient overvoltage events at inputs without external diodes.

Pinout & Package

SN74F541N uses a 20-pin plastic dual in-line package (PDIP-N), 0.300" wide, with standard through-hole mounting and JEDEC MS-001 compliant footprint.

Pin/Terminal	Circuit Role	Design Meaning
1, 19	OE1, OE2	Active-low 3-state enable inputs; OR logic - either high disables all outputs.
2–9	A1–A8	Non-inverting data inputs; direct connection to source registers or microcontroller ports.
11–18	Y1–Y8	3-state buffered outputs; drive bidirectional buses or isolated address lines.
10	GND	Ground reference for all logic and power paths; requires low-impedance PCB plane.
20	V_CC	+5 V supply; must be decoupled locally with 0.1 µF ceramic capacitor.

Key Features

Feature	Design Value
Data Flow-Through Pinout	Inputs (A1–A8) on left side, outputs (Y1–Y8) on right side - simplifies layer routing and reduces trace crossovers on 2-layer PCBs.
Dual 3-State Enable Logic	OE1 and OE2 are independent active-low inputs with OR behavior - enables flexible bus arbitration using separate control signals.
TTL-Compatible Drive Strength	64 mA sink / 15 mA source - eliminates need for external bus transceivers in legacy 5 V systems.
Bus-Friendly Disable Behavior	Outputs enter high-Z within 9.5 ns (t_PZL/t_PZH) - prevents glitches during bus handoff transitions.
Robust Input Voltage Range	–1.2 V to 7 V - withstands overshoot and undershoot transients common in hot-plug or cable-driven environments.

Applications

Memory Address Buffering	Parallel Bus Isolation
Use Scenario: Buffering 8-bit address lines between microprocessor and SRAM/ROM in vintage computing or industrial PLC modules. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer isolating CPU address bus from memory subsystem; enables memory-mapped I/O sharing. Use Value: Prevents address bus contention during DMA cycles; t_PHL ≤ 6 ns ensures timing compliance with 8 MHz Z80 or 6502 derivatives.	Use Scenario: Isolating two 8-bit parallel data buses (e.g., CPU data bus and peripheral expansion bus) in modular instrumentation systems. IC Role / Device Role / Timing Role: Bidirectional bus driver controlled by OE1/OE2 to gate data flow directionally without level shifters. Use Value: Enables time-multiplexed bus sharing; ±50 µA 3-state leakage avoids false reads during bus release phases.
Legacy System Repair	Industrial Control Backplane
Use Scenario: Drop-in replacement for failed 74F541 devices in discontinued test equipment or CNC controllers. IC Role / Device Role / Timing Role: Pin-identical functional replacement preserving original timing margins and drive requirements. Use Value: Maintains system-level setup/hold timing; identical t_PLH/t_PHL spec ensures no firmware or timing diagram revision needed.	Use Scenario: Driving distributed I/O module address select lines across 200 mm backplane traces in factory automation racks. IC Role / Device Role / Timing Role: Low-skew buffer compensating for trace capacitance-induced delay degradation on long parallel runs. Use Value: 64 mA drive sustains signal integrity over 100 pF net capacitance; flow-through pinout minimizes stub length in daisy-chained layouts.

Memory Address Buffering

Parallel Bus Isolation

Use Scenario: Buffering 8-bit address lines between microprocessor and SRAM/ROM in vintage computing or industrial PLC modules.

IC Role / Device Role / Timing Role: Non-inverting 3-state buffer isolating CPU address bus from memory subsystem; enables memory-mapped I/O sharing.

Use Value: Prevents address bus contention during DMA cycles; t_PHL ≤ 6 ns ensures timing compliance with 8 MHz Z80 or 6502 derivatives.

Use Scenario: Isolating two 8-bit parallel data buses (e.g., CPU data bus and peripheral expansion bus) in modular instrumentation systems.

IC Role / Device Role / Timing Role: Bidirectional bus driver controlled by OE1/OE2 to gate data flow directionally without level shifters.

Use Value: Enables time-multiplexed bus sharing; ±50 µA 3-state leakage avoids false reads during bus release phases.

Legacy System Repair

Industrial Control Backplane

Use Scenario: Drop-in replacement for failed 74F541 devices in discontinued test equipment or CNC controllers.

IC Role / Device Role / Timing Role: Pin-identical functional replacement preserving original timing margins and drive requirements.

Use Value: Maintains system-level setup/hold timing; identical t_PLH/t_PHL spec ensures no firmware or timing diagram revision needed.

Use Scenario: Driving distributed I/O module address select lines across 200 mm backplane traces in factory automation racks.

IC Role / Device Role / Timing Role: Low-skew buffer compensating for trace capacitance-induced delay degradation on long parallel runs.

Use Value: 64 mA drive sustains signal integrity over 100 pF net capacitance; flow-through pinout minimizes stub length in daisy-chained layouts.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LS541N	Lower drive (I_OL = 24 mA), slower speed (t_PLH up to 15 ns), LS-TTL compatible.	Higher noise margin but insufficient for driving >5 TTL loads or fast buses.	Select only if system operates below 4 MHz and prioritizes power efficiency over speed.
SN74ACT541N	CMOS-based, 5 V tolerant, higher speed (t_PLH = 3.5 ns typ), rail-to-rail VOH/VOL.	Not TTL-input compatible; requires VIH ≥ 3.5 V, unsuitable for direct 74F interface without level translation.	Choose for new designs needing lower ICC (20 µA vs. 40 mA) and improved noise immunity, not for drop-in replacement.

Compared with SN74LS541N and SN74ACT541N, the SN74F541N uniquely balances legacy TTL compatibility, 64 mA drive, and sub-6 ns propagation-making it the only option that preserves timing and loading behavior in existing 74F-based systems without redesign.

Availability

SN74F541N is available at Aetrix Electronics and suitable for industrial control backplanes, legacy system repair, and memory address buffering requiring stable component supply and long-term obsolescence management.

Supply support for SN74F541N 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 U.S.-based semiconductor company founded in 1930, specializing in analog, embedded processing, and logic ICs with broad industrial and automotive qualification.

The SN74F541N belongs to TI's 74F Fast TTL logic family, engineered for high-speed digital interfacing in commercial-grade systems where performance, reliability, and backward compatibility outweigh ultra-low power requirements.

FAQ

What is the maximum output current rating for SN74F541N in the low state?

The SN74F541N guarantees a minimum low-level output current (I_OL) of 64 mA per output at V_CC = 4.5 V and T_A = 25°C. This allows direct driving of up to 10 standard TTL inputs. Exceeding this value risks exceeding absolute maximum ratings and may cause permanent damage to the SN74F541N device.

Does SN74F541N support hot-swap or live-insertion into a powered bus?

No, the SN74F541N is not hot-swap rated. Its absolute maximum input voltage is –1.2 V to 7 V, and output voltage range in disabled state is –0.5 V to 5.5 V-insufficient for safe insertion into an active 5 V bus with significant capacitive load. Applying power or signals before V_CC stabilization may damage the SN74F541N due to internal clamp diode conduction.

Can SN74F541N be used with 3.3 V logic systems?

The SN74F541N is not 3.3 V compatible. Its recommended V_CC is 4.5–5.5 V, and VIH minimum is 2.0 V - while it may function with 3.3 V inputs in some cases, VOH will fall below 2.4 V (typical), violating 3.3 V logic high thresholds. Interfacing with 3.3 V systems requires level translation; the SN74F541N itself must operate at 5 V.

What is the function of pins 1 and 19 on SN74F541N?

Pins 1 and 19 are OE1 and OE2 - active-low 3-state output enable inputs. The SN74F541N output drivers enter high-impedance state if either OE1 or OE2 is driven high. Both must be low for normal buffered output operation. This dual-enable structure supports flexible bus arbitration schemes in multi-master systems.

Is SN74F541N RoHS compliant?

Yes, the SN74F541N is RoHS compliant, with lead finish NIPDAU (Nickel/Palladium/Gold) and exemption status confirmed in TI's official packaging addendum. It meets EU Directive 2011/65/EU requirements and carries no hazardous substance restrictions beyond standard exemptions for lead in high-melting-temperature solder alloys.

SN74F541N Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74F

Package/Case:: 20-DIP (0.300", 7.62mm)

Packaging:: Bulk

Product Status:: Active

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 1

Number of Bits per Element:: 8

Input Type:: -

Output Type:: 3-State

Current - Output High, Low:: 15mA, 64mA

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 20-PDIP

SN74F541N FAQ

1.How can I place an order for SN74F541N through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74F541N on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SN74F541N reliable?

The price and inventory of SN74F541N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74F541N is usually 5 days.

3.What payment methods are accepted for SN74F541N?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74F541N transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74F541N?

SN74F541N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74F541N order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SN74F541N?

For technical support, including SN74F541N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74F541N requirements.

6.How does Aetrix verify that SN74F541N is sourced from the original manufacturer or authorized distributors?

All SN74F541N products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SN74F541N meets industry standards.

7.What is the process for return or replacement of SN74F541N?

All SN74F541N units undergo pre-shipment inspection (PSI). If there is an issue with SN74F541N, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SN74F541N part is unused and in its original packaging.

Return procedure for SN74F541N:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…