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

Texas Instruments SN74ACT241PWLE

Name: SN74ACT241PWLE
Brand: Texas Instruments
SKU: SN74ACT241PWLE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74ACT241PWLE

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: -

Datasheet:: SN74ACT241PWLE.pdf

Description:: BUS DRIVER, ACT SERIES, 4-BIT,

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SN74ACT241PWLE from Texas Instruments is an octal noninverting buffer/driver with dual 3-state outputs, designed for memory address and bus driving in 5-V digital systems. It operates from 4.5 V to 5.5 V, supports TTL-compatible inputs up to 5.5 V, delivers ≤8.5 ns propagation delay at 5 V, and features separate complementary output-enable controls (1OE, 2OE) for independent 4-bit group control - used in high-density data path isolation and bidirectional bus interfacing.

For engineers reviewing the SN74ACT241PWLE datasheet, SN74ACT241PWLE pinout, SN74ACT241PWLE application, or SN74ACT241PWLE equivalent, key selection considerations include its TSSOP-20 package thermal resistance (83°C/W), ±24 mA output drive capability, high-impedance state control logic, input transition rate tolerance (8 ns/V), and compatibility with legacy 5-V TTL and CMOS buses.

Technical Context

The SN74ACT241PWLE implements two independent 4-bit noninverting buffer sections, each with dedicated active-low (1OE) and active-high (2OE) output-enable inputs. When 1OE is low *or* 2OE is high, the corresponding A-inputs pass directly to Y-outputs; when 1OE is high *or* 2OE is low, outputs enter high-impedance state - enabling flexible bus arbitration without external logic.

It uses ACT (Advanced CMOS TTL-compatible) technology, ensuring 5-V operation with TTL-level input thresholds (VIL = 0.8 V, VIH = 2 V), rail-to-rail output swing (VOH ≥ 4.7 V, VOL ≤ 0.5 V at 24 mA), and robust noise immunity (Δt/Δv = 8 ns/V). Input and output clamping protects against overvoltage transients up to ±20 mA.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Range	4.5 V to 5.5 V - ensures stable operation across industrial 5-V supply tolerances.
tpd (max)	8.5 ns at 5 V - enables high-speed address/data buffering in memory and peripheral interfaces.
IOH/IOL	±24 mA - drives standard TTL loads or multiple CMOS inputs without external buffers.
VIH/VIL	2.0 V / 0.8 V - guarantees reliable recognition of TTL logic levels on 5-V rails.
θJA	83°C/W (TSSOP-PW) - defines thermal derating limit for continuous operation in compact PCB layouts.
Input Clamp Current	±20 mA - limits damage from transient overvoltage events on bus lines.
Power Dissipation Cap.	45 pF per buffer - quantifies dynamic power consumption during switching at 1 MHz.

Pinout & Package

TSSOP-20 (PW) package: 6.5 mm × 4.4 mm body, 0.65 mm lead pitch, 1.2 mm max height, gull-wing leads, moisture sensitivity level 1 (260°C reflow).

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4	1A1–1A4 Inputs	First 4-bit input group feeding Y1–Y4 outputs when enabled.
5	1OE	Active-low output-enable for first 4-bit group - low enables, high disables.
6, 7, 8, 9	1Y1–1Y4 Outputs	Noninverted buffered outputs for first input group; high-Z when disabled.
10	GND	Ground reference for all internal circuitry and I/O.
11, 12, 13, 14	2A1–2A4 Inputs	Second 4-bit input group feeding Y1–Y4 outputs when enabled.
15	2OE	Active-high output-enable for second 4-bit group - high enables, low disables.
16, 17, 18, 19	2Y1–2Y4 Outputs	Noninverted buffered outputs for second input group; high-Z when disabled.
20	VCC	Positive supply rail (4.5–5.5 V) powering logic core and output drivers.

Key Features

Feature	Design Value
Dual independent 4-bit groups	Enables selective enable/disable of two bus segments using separate OE controls - reduces contention in multiplexed memory or I/O subsystems.
TTL-compatible inputs	Accepts 0–5.5 V input voltages and meets TTL VIH/VIL thresholds - simplifies interface with legacy microcontrollers and peripherals.
High-speed 3-state outputs	8.5 ns max tpd + fast enable/disable timing (tPZH/tPLZ ≤ 10.5 ns) - supports clean bus turnaround in high-frequency data transfers.
Rail-to-rail output drive	VOH ≥ 4.7 V and VOL ≤ 0.5 V at ±24 mA load - maintains noise margin across full temperature range (−40°C to 85°C).
Input transition rate limit	8 ns/V minimum - prevents false triggering from slow-rising clock or control signals in noisy environments.

Applications

Memory Address Buffering	Bus Transceiver Interface
Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM or EPROM chips in a shared-memory system. IC Role / Device Role: Octal noninverting buffer isolating CPU address bus from memory device inputs while supporting 3-state tristate for bus sharing. Use Value: Prevents loading-induced timing skew and signal degradation across long traces; dual OE allows interleaved access to two memory banks.	Use Scenario: Bidirectional data transfer between an FPGA and a parallel ADC/DAC where direction control is managed by external logic. IC Role / Device Role: Direction-agnostic 3-state driver enabling controlled data flow onto a common data bus without contention. Use Value: Eliminates need for discrete direction-control logic; separate OE pins allow precise timing of bus release and acquisition.
Clock Distribution Network	I/O Expansion Isolation
Use Scenario: Distributing a system clock to multiple peripheral controllers while maintaining signal integrity and fanout capability. IC Role / Device Role: Low-skew, high-drive buffer replicating clock signal to multiple destinations with synchronized enable control. Use Value: Delivers ≤8.5 ns propagation delay and tight inter-output skew - critical for synchronous timing across distributed peripherals.	Use Scenario: Isolating GPIO expansion ports (e.g., from an MCU GPIO expander) from main system bus to prevent back-driving during reset or power sequencing. IC Role / Device Role: 3-state buffer placed between expander outputs and host bus, with OE tied to reset signal for fail-safe high-Z during initialization. Use Value: Ensures bus remains undriven during power-up/down sequences - avoids metastability or latch-up in connected devices.

Memory Address Buffering

Bus Transceiver Interface

Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM or EPROM chips in a shared-memory system.

IC Role / Device Role: Octal noninverting buffer isolating CPU address bus from memory device inputs while supporting 3-state tristate for bus sharing.

Use Value: Prevents loading-induced timing skew and signal degradation across long traces; dual OE allows interleaved access to two memory banks.

Use Scenario: Bidirectional data transfer between an FPGA and a parallel ADC/DAC where direction control is managed by external logic.

IC Role / Device Role: Direction-agnostic 3-state driver enabling controlled data flow onto a common data bus without contention.

Use Value: Eliminates need for discrete direction-control logic; separate OE pins allow precise timing of bus release and acquisition.

Clock Distribution Network

I/O Expansion Isolation

Use Scenario: Distributing a system clock to multiple peripheral controllers while maintaining signal integrity and fanout capability.

IC Role / Device Role: Low-skew, high-drive buffer replicating clock signal to multiple destinations with synchronized enable control.

Use Value: Delivers ≤8.5 ns propagation delay and tight inter-output skew - critical for synchronous timing across distributed peripherals.

Use Scenario: Isolating GPIO expansion ports (e.g., from an MCU GPIO expander) from main system bus to prevent back-driving during reset or power sequencing.

IC Role / Device Role: 3-state buffer placed between expander outputs and host bus, with OE tied to reset signal for fail-safe high-Z during initialization.

Use Value: Ensures bus remains undriven during power-up/down sequences - avoids metastability or latch-up in connected devices.

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
SN74ACT240PW	Inverting output polarity (vs. noninverting in SN74ACT241PWLE); identical pinout, timing, and drive specs.	Required where logic inversion is needed in the signal path - e.g., active-low enable propagation or complemented bus addressing.	Select SN74ACT240PW only if inversion is functionally required; otherwise SN74ACT241PWLE provides direct signal pass-through.
SN74LVC244APWR	3.3-V only operation (1.65–3.6 V), lower drive (±24 mA), same pinout but different voltage domain and logic thresholds.	Used in mixed-voltage systems where 3.3-V logic interfaces with 5-V peripherals via level-shifting; not 5-V tolerant without external protection.	Choose SN74LVC244APWR for 3.3-V domains; SN74ACT241PWLE remains optimal for native 5-V bus systems requiring TTL compatibility.

Compared with SN74ACT241PWLE, SN74ACT240PW offers functional inversion without timing or packaging trade-offs, while SN74LVC244APWR shifts voltage domain and logic family - making it suitable only in 3.3-V designs with careful level management.

Availability

SN74ACT241PWLE is available at Aetrix Electronics and suitable for memory subsystem design, industrial bus interfacing, and legacy 5-V embedded control applications requiring stable component supply and long-term sourcing continuity.

Supply support for SN74ACT241PWLE 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 specializing in analog, embedded processing, and logic solutions, with decades of heritage in industry-standard logic families.

The SN74ACT241PWLE belongs to TI's ACT-series advanced CMOS logic line, engineered for high-speed, TTL-compatible 5-V digital systems where noise immunity, drive strength, and bus isolation are critical.

FAQ

What is the operating temperature range for SN74ACT241PWLE?

The SN74ACT241PWLE is rated for industrial operation from −40°C to +85°C. This range is confirmed in the "recommended operating conditions" table of the SCAS516C datasheet and applies specifically to the SN74ACT241PWLE variant in TSSOP-PW packaging. It does not support extended military temperature ranges like the SN54ACT241 variants.

Is SN74ACT241PWLE pin-compatible with other SN74ACT241 package variants?

Yes - SN74ACT241PWLE shares identical pin numbering and signal assignment with all SN74ACT241 variants (e.g., SN74ACT241N, SN74ACT241DWR, SN74ACT241PWR), including the same 1–20 pinout order and function mapping. The TSSOP-PW footprint differs mechanically from SOIC-DW or PDIP-N, but electrical connectivity and logic behavior are fully consistent across packages.

Can SN74ACT241PWLE accept 5.5-V inputs while powered at 4.5 V?

Yes - the SN74ACT241PWLE explicitly supports input voltages up to 5.5 V regardless of VCC level (4.5–5.5 V), as stated in the "Inputs Accept Voltages to 5.5 V" headline and confirmed in absolute maximum ratings (VI = −0.5 V to VCC + 0.5 V). This enables safe interfacing with higher-voltage sources in mixed-signal or legacy systems.

What is the recommended power-up sequence for SN74ACT241PWLE to ensure high-impedance outputs?

To guarantee high-impedance outputs during power-up, tie 1OE to VCC via a pullup resistor and 2OE to GND via a pulldown resistor, as specified in the datasheet description section. Minimum resistor values depend on driver sourcing/sinking capability - typical values range from 1 kΩ to 10 kΩ - ensuring OE states settle before VCC stabilizes.

Does SN74ACT241PWLE support hot-swap or live-insertion?

No - SN74ACT241PWLE is not characterized or guaranteed for hot-swap operation. Its absolute maximum ratings do not include live insertion stress testing, and the absence of Ioff (power-off protection) or IOZ (bus-hold) features means unpowered devices may experience latch-up or excessive current if inputs are driven while VCC = 0 V.

SN74ACT241PWLE Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

Logic Type:: -

Number of Elements:: -

Number of Bits per Element:: -

Input Type:: -

Output Type:: -

Current - Output High, Low:: -

Voltage - Supply:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

SN74ACT241PWLE FAQ

1.How can I place an order for SN74ACT241PWLE through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74ACT241PWLE 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 SN74ACT241PWLE reliable?

The price and inventory of SN74ACT241PWLE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ACT241PWLE is usually 5 days.

3.What payment methods are accepted for SN74ACT241PWLE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ACT241PWLE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74ACT241PWLE?

SN74ACT241PWLE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74ACT241PWLE 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 SN74ACT241PWLE?

For technical support, including SN74ACT241PWLE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ACT241PWLE requirements.

6.How does Aetrix verify that SN74ACT241PWLE is sourced from the original manufacturer or authorized distributors?

All SN74ACT241PWLE 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 SN74ACT241PWLE meets industry standards.

7.What is the process for return or replacement of SN74ACT241PWLE?

All SN74ACT241PWLE units undergo pre-shipment inspection (PSI). If there is an issue with SN74ACT241PWLE, 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 SN74ACT241PWLE part is unused and in its original packaging.

Return procedure for SN74ACT241PWLE:

1.Submit a request within 90 days.

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

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