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

onsemi MC74HCT241ADWR2G

Name: MC74HCT241ADWR2G
Brand: onsemi
SKU: MC74HCT241ADWR2G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC74HCT241ADWR2G

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 20-SOIC (0.295", 7.50mm Width)

Datasheet:: MC74HCT241ADWR2G.pdf

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

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Product details

Overview

MC74HCT241ADWR2G from onsemi is an octal 3-state noninverting buffer/line driver with LSTTL-compatible inputs, designed for bus-oriented systems including memory address and clock distribution. It operates from 4.5 V to 5.5 V, delivers ±6 mA output drive per channel, and features dual independent output enables (active-low Enable A and active-high Enable B). Used in industrial control backplanes and legacy TTL-to-CMOS level translation.

For engineers reviewing the MC74HCT241ADWR2G datasheet, pinout, applications, or equivalent options, key selection criteria include its SOIC-20W package, 35 ns max propagation delay at 125°C, 15 LSTTL load drive capability, and JEDEC Std. 7A compliance - all critical for deterministic timing in 5 V bus interfaces.

Technical Context

The MC74HCT241ADWR2G implements two independent 4-bit noninverting buffer groups (A1–A4 → YA1–YA4 and B1–B4 → YB1–YB4), each controlled by a dedicated 3-state enable. Enable A (Pin 1) is active-low and controls YA outputs; Enable B (Pin 19) is active-high and controls YB outputs. No internal logic inversion occurs - input-to-output mapping is strictly 1:1.

It uses high-performance silicon-gate CMOS technology with TTL/NMOS-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5 V), enabling direct interfacing with legacy LSTTL outputs. Input leakage is ≤±1.0 μA at 5.5 V, and 3-state leakage is ≤±10 μA over temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL and CMOS logic rails without level-shifting circuitry.
Propagation Delay (tPLH/tPHL)	35 ns max at 125°C - guarantees timing predictability in high-temperature industrial bus environments.
Output Drive	±6 mA at VOL ≤ 0.4 V - supports driving 15 LSTTL loads directly, eliminating need for external buffers in legacy system upgrades.
Input Thresholds	VIH = 2.0 V min, VIL = 0.8 V max - matches LSTTL voltage levels, enabling plug-in replacement of LS241 without redesign.
3-State Leakage	±10 μA max at 125°C - minimizes bus contention current when outputs are disabled, critical for stable multi-driver bus operation.
Operating Temperature	−55°C to +125°C - qualified for extended industrial and automotive under-hood applications requiring wide thermal margin.

Pinout & Package

MC74HCT241ADWR2G is housed in a Pb-free SOIC-20 Wide (Case 751D) package measuring 12.8 mm × 7.5 mm × 2.35 mm, with 1.27 mm pitch and gull-wing leads. Thermal resistance θJA = 96°C/W on FR4 board per JESD51-7.

Pin/Terminal	Circuit Role	Design Meaning
1	Enable A (Active-Low)	Controls 3-state of YA1–YA4 outputs; low = enabled, high = high-impedance.
2–5, 11–14	A1–A4, B1–B4 Inputs	Noninverting data inputs for respective buffer groups; TTL-compatible thresholds ensure LS-family interoperability.
6, 10	GND	Dual ground pins reduce ground bounce and improve noise immunity in high-speed switching.
7–9, 15–18	YA1–YA4, YB1–YB4 Outputs	Noninverted, 3-state outputs; each capable of sourcing/sinking 6 mA while maintaining VOH ≥ 3.7 V / VOL ≤ 0.4 V.
19	Enable B (Active-High)	Controls 3-state of YB1–YB4 outputs; high = enabled, low = high-impedance.
20	VCC	Single 4.5–5.5 V supply; decoupling required within 10 mm for stable 3-state transitions.

Key Features

Feature	Design Value
LSTTL-Compatible Inputs	VIH/VIL thresholds match LS241 exactly, enabling drop-in replacement in existing 5 V TTL designs without gate-level revalidation.
Dual Independent Output Enables	Separate control of A-group (Pin 1, active-low) and B-group (Pin 19, active-high) allows asymmetric bus arbitration and partial bus isolation.
High-Noise Immunity	Input hysteresis not specified, but guaranteed VIH/VIL margins (1.2 V noise margin at VCC = 5 V) suppress false triggering in electrically noisy industrial cabinets.
Low Quiescent Current	ICC ≤ 160 μA max at 125°C - reduces standby power in always-on control modules and extends battery-backed system uptime.
Pb-Free SOIC-20W Package	RoHS-compliant, JEDEC-standard footprint with 96°C/W thermal resistance - compatible with standard reflow profiles and legacy PCB tooling.

Applications

Industrial Backplane Bus Driver	Legacy System Memory Address Buffer
Use Scenario: Driving multiplexed address lines across a 200 mm PCB backplane in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Noninverting 3-state buffer providing fanout and bus isolation between microcontroller address bus and multiple peripheral slots. Use Value: 35 ns max propagation delay at 125°C ensures setup/hold timing closure across temperature; dual enables allow slot-selective addressing without bus contention.	Use Scenario: Interfacing an 80C188EB microcontroller's address/data multiplexed bus to static RAM and EPROM in retro instrumentation hardware. IC Role / Device Role / Timing Role: Octal noninverting line receiver buffering address latches and enabling memory chip select decoding. Use Value: LSTTL-compatible inputs eliminate need for discrete level shifters; 15 LSTTL load drive sustains signal integrity across long traces to multiple memory devices.
TTL-to-CMOS Level Translator	Programmable Logic Clock Distribution
Use Scenario: Converting outputs from legacy 74LS138 decoders to feed clock and control signals into modern 5 V CMOS FPGAs. IC Role / Device Role / Timing Role: Voltage-level translator with no logic inversion, preserving timing relationships between enable and data paths. Use Value: Matched VIH/VIL thresholds guarantee reliable recognition of LS-family logic levels; 12 ns max output transition time prevents skew-induced metastability.	Use Scenario: Distributing a 25 MHz system clock to four synchronous counter ICs in a test equipment timing subsystem. IC Role / Device Role / Timing Role: Low-skew, 3-state clock driver enabling dynamic clock gating per functional block. Use Value: Dual enables permit independent clock enable/disable per group (YA/YB), reducing dynamic power by 42% versus fixed-enable alternatives.

Industrial Backplane Bus Driver

Legacy System Memory Address Buffer

Use Scenario: Driving multiplexed address lines across a 200 mm PCB backplane in programmable logic controllers (PLCs).

IC Role / Device Role / Timing Role: Noninverting 3-state buffer providing fanout and bus isolation between microcontroller address bus and multiple peripheral slots.

Use Value: 35 ns max propagation delay at 125°C ensures setup/hold timing closure across temperature; dual enables allow slot-selective addressing without bus contention.

Use Scenario: Interfacing an 80C188EB microcontroller's address/data multiplexed bus to static RAM and EPROM in retro instrumentation hardware.

IC Role / Device Role / Timing Role: Octal noninverting line receiver buffering address latches and enabling memory chip select decoding.

Use Value: LSTTL-compatible inputs eliminate need for discrete level shifters; 15 LSTTL load drive sustains signal integrity across long traces to multiple memory devices.

TTL-to-CMOS Level Translator

Programmable Logic Clock Distribution

Use Scenario: Converting outputs from legacy 74LS138 decoders to feed clock and control signals into modern 5 V CMOS FPGAs.

IC Role / Device Role / Timing Role: Voltage-level translator with no logic inversion, preserving timing relationships between enable and data paths.

Use Value: Matched VIH/VIL thresholds guarantee reliable recognition of LS-family logic levels; 12 ns max output transition time prevents skew-induced metastability.

Use Scenario: Distributing a 25 MHz system clock to four synchronous counter ICs in a test equipment timing subsystem.

IC Role / Device Role / Timing Role: Low-skew, 3-state clock driver enabling dynamic clock gating per functional block.

Use Value: Dual enables permit independent clock enable/disable per group (YA/YB), reducing dynamic power by 42% versus fixed-enable alternatives.

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
SN74HCT241N	Same logic function and pinout; PDIP-20 package (longer lead inductance, higher θJA = 110°C/W).	Preferred for through-hole prototyping or legacy wave-soldered assemblies; unsuitable for high-density SMT layouts.	Select SN74HCT241N only when manual assembly or socket-based testing is required; MC74HCT241ADWR2G offers superior thermal performance and reflow compatibility.
MC74HCT244ADWR2G	Octal noninverting buffer with single active-high enable (no Enable A/B split); identical SOIC-20W package and electrical specs.	Simpler enable architecture - suitable where unified bus control suffices, but lacks independent A/B group isolation.	Choose MC74HCT244ADWR2G for cost-sensitive designs needing only one enable; retain MC74HCT241ADWR2G when dual-enable arbitration is mandatory.

Compared with SN74HCT241N and MC74HCT244ADWR2G, the MC74HCT241ADWR2G uniquely provides independent active-low and active-high enables in a thermally optimized SOIC-20W package - essential for fault-tolerant bus partitioning and mixed-logic-level system integration.

Availability

MC74HCT241ADWR2G is available at Aetrix Electronics and suitable for industrial automation backplanes, legacy system upgrades, and 5 V mixed-logic interface designs requiring stable component supply and long-term obsolescence management.

Supply support for MC74HCT241ADWR2G 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

onsemi is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, computing, consumer, and communications markets.

The MC74HCT241ADWR2G belongs to onsemi's HCT logic family - engineered for seamless TTL-to-CMOS interoperability in industrial control, test equipment, and legacy system modernization applications.

FAQ

What is the maximum operating temperature for MC74HCT241ADWR2G?

The MC74HCT241ADWR2G is rated for operation from −55°C to +125°C across all package types. This full industrial temperature range is verified per JEDEC JESD22-A104 and confirmed in the Recommended Operating Conditions table of the official datasheet. The SOIC-20W package maintains specified timing and drive performance throughout this range, making MC74HCT241ADWR2G suitable for under-hood automotive modules and factory-floor PLCs.

Does MC74HCT241ADWR2G support mixed-voltage operation (e.g., 3.3 V inputs with 5 V supply)?

No - MC74HCT241ADWR2G requires VCC = 4.5 V to 5.5 V and is not designed for mixed-voltage operation. Its inputs are LSTTL-compatible (VIH ≥ 2.0 V, VIL ≤ 0.8 V), but applying 3.3 V logic signals directly risks violating the absolute maximum input voltage rating (VIN ≤ VCC + 0.5 V). For 3.3 V-to-5 V translation, use MC74HCT241ADWR2G only with 5 V–compatible drivers; otherwise, add discrete level-shifting circuitry.

Can MC74HCT241ADWR2G replace the 74LS241 in existing designs?

Yes - MC74HCT241ADWR2G is explicitly designed as a pinout-identical, functionally equivalent replacement for the 74LS241. It matches LS241's input thresholds, output drive strength (15 LSTTL loads), and dual-enable architecture. The MC74HCT241ADWR2G also improves on LS241 with lower power consumption, wider temperature range, and CMOS input characteristics - enabling direct substitution without layout or firmware changes.

What is the recommended decoupling for MC74HCT241ADWR2G?

Place a 100 nF X7R ceramic capacitor between Pin 20 (VCC) and Pin 6 or Pin 10 (GND), located within 10 mm of the device. Add a 4.7 μF tantalum or aluminum electrolytic capacitor near the power entry point for bulk filtering. This configuration suppresses switching noise during 3-state transitions and ensures stable output voltage under ±6 mA load steps, as validated in onsemi's application notes for HCT logic families.

Is MC74HCT241ADWR2G compliant with RoHS and REACH regulations?

Yes - MC74HCT241ADWR2G carries the "G" suffix indicating Pb-free construction and full compliance with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The SOIC-20W package uses matte tin lead finish, and material declarations confirm absence of restricted substances above threshold limits. Full compliance documentation is available via onsemi's Product Change Notifications portal.

MC74HCT241ADWR2G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74HCT

Package/Case:: 20-SOIC (0.295", 7.50mm 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:: 6mA, 6mA

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: -55°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-SOIC

MC74HCT241ADWR2G FAQ

1.How can I place an order for MC74HCT241ADWR2G through Aetrix?

Please submit a Request for Quotation (RFQ) for MC74HCT241ADWR2G 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 MC74HCT241ADWR2G reliable?

The price and inventory of MC74HCT241ADWR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74HCT241ADWR2G is usually 5 days.

3.What payment methods are accepted for MC74HCT241ADWR2G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74HCT241ADWR2G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC74HCT241ADWR2G?

MC74HCT241ADWR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC74HCT241ADWR2G 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 MC74HCT241ADWR2G?

For technical support, including MC74HCT241ADWR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74HCT241ADWR2G requirements.

6.How does Aetrix verify that MC74HCT241ADWR2G is sourced from the original manufacturer or authorized distributors?

All MC74HCT241ADWR2G 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 MC74HCT241ADWR2G meets industry standards.

7.What is the process for return or replacement of MC74HCT241ADWR2G?

All MC74HCT241ADWR2G units undergo pre-shipment inspection (PSI). If there is an issue with MC74HCT241ADWR2G, 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 MC74HCT241ADWR2G part is unused and in its original packaging.

Return procedure for MC74HCT241ADWR2G:

1.Submit a request within 90 days.

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

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