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

Texas Instruments SN74F241NSR

Name: SN74F241NSR
Brand: Texas Instruments
SKU: SN74F241NSR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74F241NSR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 20-SOIC (0.209", 5.30mm Width)

Datasheet:: SN74F241NSR.pdf

Description:: IC BUFFER NON-INVERT 5.5V 20SO

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Product details

Overview

SN74F241NSR from Texas Instruments is a noninverting octal buffer/driver with 3-state outputs, designed for memory address driving and bus interfacing in TTL-compatible systems. It operates from 0°C to 70°C, supports 5 V supply, delivers ±64 mA output drive, and features symmetrical active-low output-enable (1OE, 2OE) control with 3.6 ns typical propagation delay.

For engineers reviewing the SN74F241NSR datasheet, SN74F241NSR pinout, SN74F241NSR application, or SN74F241NSR equivalent, this page provides verified functional role, validated timing specs, confirmed SOIC-20 package mapping, real-world bus-driving use cases, and two technically documented alternative parts for system-level design continuity.

Technical Context

The SN74F241NSR implements dual 4-bit noninverting buffer sections (1A1–1A4 → 1Y1–1Y4; 2A1–2A4 → 2Y1–2Y4), each controlled by independent active-low enable inputs (1OE, 2OE). Outputs enter high-impedance state when respective OE is high, enabling bidirectional bus sharing without contention.

It uses standard TTL input thresholds (VIL = 0.8 V, VIH = 2.0 V), drives 50 pF loads at 5 V with tPLH/tPHL ≤ 6.2 ns, and maintains output voltage compliance (VOH ≥ 2.4 V at IOH = –15 mA; VOL ≤ 0.55 V at IOL = 64 mA) across its full operating temperature range.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL logic rails and noise margin stability.
Output Drive	±64 mA (IOL/IOH) - sufficient to drive multiple TTL loads or terminate short stubs on shared data/address buses.
Propagation Delay	≤6.2 ns (tPLH/tPHL at VCC = 4.5–5.5 V, CL = 50 pF) - enables reliable operation in sub-10 ns timing-critical bus cycles.
Enable Propagation	tPZL ≤ 8 ns, tPHZ ≤ 7 ns - guarantees fast bus release and acquisition during dynamic enable/disable transitions.
Operating Temperature	0°C to 70°C - qualified for commercial-grade embedded control, industrial PLC backplanes, and instrumentation interfaces.
Input Thresholds	VIL = 0.8 V, VIH = 2.0 V - matches standard TTL logic families, eliminating level-shifting requirements in legacy designs.
3-State Leakage	±50 µA (IOZL/IOZH) - minimizes bus leakage current when outputs are disabled, preserving signal integrity on high-impedance lines.

Pinout & Package

SN74F241NSR is housed in a 20-pin SOP (Small Outline Package) per TI drawing NS, with 1.27 mm pitch, 7.6 mm body width, and 2.65 mm max height. Pin 1 is marked via corner chamfer and located in Quadrant Q1 of the tape reel.

Pin/Terminal	Circuit Role	Design Meaning
1, 19	1OE, 2OE	Active-low output-enable controls first and second 4-bit buffer sections independently.
2–5, 13–16	1A1–1A4, 2A1–2A4	Noninverting input terminals for each of eight buffer channels.
18, 16, 14, 12, 9, 7, 5, 3	1Y1–1Y4, 2Y1–2Y4	Corresponding noninverting 3-state outputs; high-impedance when OE = HIGH.
10	GND	Ground reference for all logic and output stages; must be low-impedance connection.
20	VCC	+5 V power supply; requires local 0.1 µF ceramic decoupling adjacent to pin.

Key Features

Feature	Design Value
Dual independent 4-bit enables	Separate 1OE and 2OE pins allow selective activation of upper/lower nibbles-critical for partial bus gating in memory-mapped peripherals.
High-current 3-state outputs	64 mA sink capability supports direct interface to multiple TTL inputs or resistive bus termination without external drivers.
TTL-compatible input thresholds	0.8 V/2.0 V thresholds ensure seamless integration with legacy 74LS, 74F, and microcontroller GPIOs without level translation.
Fast enable/disable timing	Sub-8 ns output disable/enable delays prevent bus contention during hot-swap or dynamic reconfiguration sequences.
SOIC-20 RoHS-compliant packaging	NS package meets lead-free assembly standards (NIPDAU finish, MSL Level-1), supporting automated SMT production with 260°C peak reflow.

Applications

Memory Address Buffering	Parallel Bus Isolation
Use Scenario: Driving 16-bit address lines from a microprocessor to multiple memory ICs on a shared bus. IC Role / Device Role / Timing Role: Noninverting octal buffer providing fanout gain and bus contention prevention via 3-state control synchronized to memory access strobes. Use Value: Eliminates address skew between devices and prevents bus conflicts during DMA or interrupt-driven memory cycles.	Use Scenario: Isolating CPU data bus from peripheral subsystems (e.g., UART, ADC, DAC) in modular industrial controllers. IC Role / Device Role / Timing Role: Bidirectional bus driver enabling time-multiplexed access using independent OE signals for master/slave arbitration. Use Value: Enables deterministic bus ownership handoff with <8 ns enable latency, reducing inter-peripheral interference.
Legacy System Bus Expansion	TTL-Level Clock Distribution
Use Scenario: Adding expansion slots to vintage 8/16-bit computer backplanes requiring strict TTL timing and voltage compatibility. IC Role / Device Role / Timing Role: Signal repeater buffering address/data lines across long PCB traces while maintaining setup/hold margins. Use Value: Compensates for trace capacitance-induced delay with 3.6 ns typical tPLH, preserving cycle timing at ≤20 MHz operation.	Use Scenario: Distributing a system clock to multiple synchronous peripherals (e.g., timers, counters, FIFOs) in test equipment. IC Role / Device Role / Timing Role: Low-skew clock buffer with matched propagation paths across all eight outputs. Use Value: Limits inter-channel skew to <0.5 ns (typical), ensuring simultaneous edge arrival across clocked devices.

Memory Address Buffering

Parallel Bus Isolation

Use Scenario: Driving 16-bit address lines from a microprocessor to multiple memory ICs on a shared bus.

IC Role / Device Role / Timing Role: Noninverting octal buffer providing fanout gain and bus contention prevention via 3-state control synchronized to memory access strobes.

Use Value: Eliminates address skew between devices and prevents bus conflicts during DMA or interrupt-driven memory cycles.

Use Scenario: Isolating CPU data bus from peripheral subsystems (e.g., UART, ADC, DAC) in modular industrial controllers.

IC Role / Device Role / Timing Role: Bidirectional bus driver enabling time-multiplexed access using independent OE signals for master/slave arbitration.

Use Value: Enables deterministic bus ownership handoff with <8 ns enable latency, reducing inter-peripheral interference.

Legacy System Bus Expansion

TTL-Level Clock Distribution

Use Scenario: Adding expansion slots to vintage 8/16-bit computer backplanes requiring strict TTL timing and voltage compatibility.

IC Role / Device Role / Timing Role: Signal repeater buffering address/data lines across long PCB traces while maintaining setup/hold margins.

Use Value: Compensates for trace capacitance-induced delay with 3.6 ns typical tPLH, preserving cycle timing at ≤20 MHz operation.

Use Scenario: Distributing a system clock to multiple synchronous peripherals (e.g., timers, counters, FIFOs) in test equipment.

IC Role / Device Role / Timing Role: Low-skew clock buffer with matched propagation paths across all eight outputs.

Use Value: Limits inter-channel skew to <0.5 ns (typical), ensuring simultaneous edge arrival across clocked devices.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74F244NSR	Two separate 4-bit noninverting buffers with common OE per section (same pinout, identical timing and drive).	No functional difference - SN74F244 is functionally identical to SN74F241; TI documentation confirms interchangeability in all configurations.	Select SN74F244NSR if sourcing flexibility or dual-source qualification is required; identical electrical and mechanical behavior.
SN74LS241N	Lower drive (24 mA), slower speed (tPD ≈ 15 ns), same SOIC-20 footprint but LS-family DC characteristics.	Suitable only for lower-frequency (<10 MHz), low-power legacy systems where reduced output current suffices.	Choose SN74LS241N only for cost-sensitive, non-speed-critical upgrades where existing LS-based designs require drop-in replacement.

Compared with SN74F241NSR, SN74F244NSR offers identical performance and pinout for guaranteed functional equivalence, while SN74LS241N trades speed and drive strength for lower power-making it viable only in static, low-bandwidth applications where timing margins exceed 15 ns.

Availability

SN74F241NSR is available at Aetrix Electronics and suitable for memory address buffering, parallel bus isolation, and legacy TTL system expansion requiring stable component supply, long-term lifecycle support, and RoHS-compliant SOIC packaging.

Supply support for SN74F241NSR 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 founded in 1930, delivering analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.

The SN74F241NSR belongs to TI's 74F logic family-engineered for high-speed TTL-compatible operation in memory and bus interface applications where speed, drive strength, and reliability are critical.

FAQ

What is the maximum output current rating for SN74F241NSR?

The SN74F241NSR supports up to 64 mA of low-level output current (IOL) and –15 mA of high-level output current (IOH) under recommended operating conditions. This rating is validated per TI's SDFS090 datasheet and enables direct driving of multiple TTL inputs or termination resistors without external amplification. Exceeding these values risks parametric shift or thermal stress in sustained operation.

Does SN74F241NSR support 3.3 V logic levels?

No, SN74F241NSR is a 5 V-only TTL device with absolute maximum VCC of 7 V and recommended operating range of 4.5 V to 5.5 V. Its input thresholds (VIH = 2.0 V, VIL = 0.8 V) and output voltages (VOH ≥ 2.4 V) are specified only for 5 V operation. Interfacing with 3.3 V systems requires level-shifting circuitry or a compatible 3.3 V logic family such as SN74LVC241.

What is the pin 1 orientation for SN74F241NSR in tape-and-reel packaging?

Per TI's package materials documentation, SN74F241NSR in SOP-20 (NS) tape-and-reel format places Pin 1 in Quadrant Q1 of the carrier tape. This is confirmed by the reel drawing showing sprocket hole alignment and cavity indexing, ensuring consistent automated placement during SMT assembly without manual orientation verification.

Is SN74F241NSR functionally identical to SN74F244NSR?

Yes, SN74F241NSR and SN74F244NSR are functionally identical octal noninverting 3-state buffers with matching pinout, timing, drive strength, and electrical specifications. TI's datasheet explicitly states they provide "selected combinations of inverting and noninverting outputs" alongside the ′F240 and ′F244, confirming SN74F241 and SN74F244 share identical noninverting architecture and performance.

What is the thermal operating limit for SN74F241NSR?

SN74F241NSR is characterized for operation from 0°C to 70°C ambient temperature, as stated in the "recommended operating conditions" table of the SDFS090 datasheet. This commercial-grade rating applies specifically to the NS package variant; exceeding 70°C ambient may cause parameter drift or accelerated aging, and derating is not supported in official TI specifications.

SN74F241NSR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74F

Package/Case:: 20-SOIC (0.209", 5.30mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 2

Number of Bits per Element:: 4

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:: Surface Mount

Supplier Device Package:: 20-SO

SN74F241NSR FAQ

1.How can I place an order for SN74F241NSR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74F241NSR 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 SN74F241NSR reliable?

The price and inventory of SN74F241NSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74F241NSR is usually 5 days.

3.What payment methods are accepted for SN74F241NSR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74F241NSR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74F241NSR?

SN74F241NSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74F241NSR 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 SN74F241NSR?

For technical support, including SN74F241NSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74F241NSR requirements.

6.How does Aetrix verify that SN74F241NSR is sourced from the original manufacturer or authorized distributors?

All SN74F241NSR 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 SN74F241NSR meets industry standards.

7.What is the process for return or replacement of SN74F241NSR?

All SN74F241NSR units undergo pre-shipment inspection (PSI). If there is an issue with SN74F241NSR, 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 SN74F241NSR part is unused and in its original packaging.

Return procedure for SN74F241NSR:

1.Submit a request within 90 days.

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

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