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

onsemi MC74HCT241ADWG

Name: MC74HCT241ADWG
Brand: onsemi
SKU: MC74HCT241ADWG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC74HCT241ADWG

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: MC74HCT241ADWG.pdf

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

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Product details

Overview

MC74HCT241ADWG from onsemi is an octal 3-state noninverting buffer/line driver with LSTTL-compatible inputs, dual active-polarity output enables (Enable A active-low, Enable B active-high), 4.5–5.5 V operation, and ±6 mA output drive. It interfaces TTL/NMOS outputs to high-speed CMOS inputs in bus-oriented systems such as memory address drivers and clock distribution networks.

For engineers reviewing the MC74HCT241ADWG datasheet, pinout, applications, or equivalent options, key selection factors include its dual-enable 3-state control logic, LSTTL input threshold compatibility (VIH = 2.0 V, VIL = 0.8 V), guaranteed propagation delay ≤35 ns at 125°C, and SOIC-20W package with Pb-free marking (G suffix).

Technical Context

The MC74HCT241ADWG implements two independent 4-bit noninverting buffer groups (A1–A4 → YA1–YA4; B1–B4 → YB1–YB4), each controlled by a dedicated enable: Enable A (Pin 1) drives YA outputs with active-low logic, while Enable B (Pin 19) drives YB outputs with active-high logic. All outputs enter high-impedance state when respective enable is inactive.

It uses high-performance silicon-gate CMOS technology compliant with JEDEC Std No. 7A, supports 15 LSTTL loads per output, and features low input current (±1.0 µA max) and tight DC electrical specs - including VOH ≥4.4 V at 4.5 V VCC with 6 mA sink/source and VOL ≤0.4 V under same conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.5 V to 5.5 V - ensures stable operation across industrial-grade 5 V rails with margin for ripple and drop.
Propagation Delay (A→YA)	≤35 ns at 125°C - guarantees timing integrity in high-temperature bus applications without derating.
Output Drive	±6 mA - directly drives 15 LSTTL loads, eliminating need for external buffering in legacy TTL-CMOS interconnects.
Input Thresholds	VIH = 2.0 V, VIL = 0.8 V - matches standard LSTTL logic levels for seamless interface with 74LS-series devices.
3-State Leakage	±10 µA max at 125°C - minimizes bus contention current when outputs are disabled in hot environments.
Operating Temperature	−55°C to +125°C - qualified for extended industrial and automotive under-hood applications.

Pinout & Package

MC74HCT241ADWG is housed in a 20-pin SOIC Wide Body (Case 751D) package, 12.95 mm × 7.60 mm × 2.65 mm, Pb-free (G suffix), moisture sensitivity level 3.

Pin/Terminal	Circuit Role	Design Meaning
1 (Enable A)	Active-low enable for YA1–YA4 outputs	Drives all four A-group outputs into high-Z when high; asserts noninverted outputs when low.
2–5, 11–14 (A1–A4, B1–B4)	Data inputs	Two independent 4-bit input buses; A-side and B-side inputs are electrically isolated and separately enabled.
6, 7, 9, 10 (YB1–YB4)	Noninverting outputs (B group)	Outputs mirror B1–B4 when Enable B (Pin 19) is high; high-Z otherwise.
15–18 (YA1–YA4)	Noninverting outputs (A group)	Outputs mirror A1–A4 when Enable A (Pin 1) is low; high-Z otherwise.
19 (Enable B)	Active-high enable for YB1–YB4 outputs	Asserts B-group outputs when high; disables them (high-Z) when low.
20 (VCC), 10 (GND)	Power supply terminals	Single 5 V supply rail; decoupling required within 10 mm of Pin 20/GND pair for noise immunity.

Key Features

Feature	Design Value
Dual independent 3-state control	Separate active-low (Enable A) and active-high (Enable B) enables allow asymmetric bus arbitration - e.g., A-group held active while B-group tristated during read/write phase switching.
LSTTL-compatible input thresholds	VIH = 2.0 V / VIL = 0.8 V ensures direct connection to 74LS, 74F, and NMOS logic without level-shifting circuitry.
High noise immunity	Input hysteresis not specified, but guaranteed VIH/VIL margins (1.2 V noise margin at 5 V) suppress false triggering on noisy backplanes.
Low quiescent current	ICC ≤ 160 µA at 125°C - enables use in always-on subsystems where standby power budget is constrained.
JEDEC Std 7A compliance	Validates interoperability with industry-standard TTL/CMOS mixed-signal systems and qualifies for legacy design reuse.

Applications

Memory Address Buffering	Microcontroller Bus Expansion
Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM/ROM chips on a shared bus. IC Role / Device Role / Timing Role: Octal noninverting buffer providing fanout and 3-state isolation between master and slave devices. Use Value: Dual enables allow time-multiplexed access: Enable A asserts YA outputs during address setup, while Enable B holds YB outputs high-Z until data phase.	Use Scenario: Expanding GPIO count of an MCU by adding peripheral control lines via parallel bus. IC Role / Device Role / Timing Role: Level-translating buffer enabling MCU's CMOS outputs to drive legacy LSTTL peripherals (e.g., 74LS138 decoder). Use Value: LSTTL-compatible inputs accept MCU's 3.3 V or 5 V logic directly; ±6 mA drive sustains signal integrity over 10 cm PCB traces.
Industrial PLC Backplane Interface	Legacy System Clock Distribution
Use Scenario: Isolating and buffering control signals across modular I/O racks in programmable logic controllers. IC Role / Device Role / Timing Role: 3-state line driver managing bidirectional signal routing on shared backplane wiring. Use Value: −55°C to +125°C rating ensures reliability in uncooled control cabinets; dual enables support hot-swap sequencing without bus contention.	Use Scenario: Distributing a system clock to multiple synchronous peripherals (e.g., ADCs, DACs, FPGAs) with matched skew. IC Role / Device Role / Timing Role: Low-skew noninverting buffer minimizing propagation delay variation across eight clock paths. Use Value: tPLH/tPHL ≤35 ns and tTLH/tTHL ≤18 ns ensure <1 ns inter-output skew, critical for setup/hold timing in multi-device sampling.

Memory Address Buffering

Microcontroller Bus Expansion

Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM/ROM chips on a shared bus.

IC Role / Device Role / Timing Role: Octal noninverting buffer providing fanout and 3-state isolation between master and slave devices.

Use Value: Dual enables allow time-multiplexed access: Enable A asserts YA outputs during address setup, while Enable B holds YB outputs high-Z until data phase.

Use Scenario: Expanding GPIO count of an MCU by adding peripheral control lines via parallel bus.

IC Role / Device Role / Timing Role: Level-translating buffer enabling MCU's CMOS outputs to drive legacy LSTTL peripherals (e.g., 74LS138 decoder).

Use Value: LSTTL-compatible inputs accept MCU's 3.3 V or 5 V logic directly; ±6 mA drive sustains signal integrity over 10 cm PCB traces.

Industrial PLC Backplane Interface

Legacy System Clock Distribution

Use Scenario: Isolating and buffering control signals across modular I/O racks in programmable logic controllers.

IC Role / Device Role / Timing Role: 3-state line driver managing bidirectional signal routing on shared backplane wiring.

Use Value: −55°C to +125°C rating ensures reliability in uncooled control cabinets; dual enables support hot-swap sequencing without bus contention.

Use Scenario: Distributing a system clock to multiple synchronous peripherals (e.g., ADCs, DACs, FPGAs) with matched skew.

IC Role / Device Role / Timing Role: Low-skew noninverting buffer minimizing propagation delay variation across eight clock paths.

Use Value: tPLH/tPHL ≤35 ns and tTLH/tTHL ≤18 ns ensure <1 ns inter-output skew, critical for setup/hold timing in multi-device sampling.

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 (not surface-mount); higher thermal resistance (JA = 110°C/W vs. 96°C/W for SOIC-20W).	Preferred for through-hole prototyping or legacy board rework; unsuitable for high-density SMT production.	Select SN74HCT241N only if DIP footprint is required and thermal derating is acceptable.
MC74HCT244ADWG	Octal noninverting buffer with single active-low enable (no dual-enable architecture); identical SOIC-20W package and electrical specs.	Simpler enable scheme - suitable when unified 3-state control suffices; cannot support independent A/B bus arbitration.	Choose MC74HCT244ADWG for cost-sensitive designs needing only one enable; retain MC74HCT241ADWG when separate A/B control is mandatory.

Compared with SN74HCT241N and MC74HCT244ADWG, the MC74HCT241ADWG uniquely provides dual-polarity enables in an SMT-optimized SOIC-20W package, enabling flexible bus arbitration without layout changes - a capability absent in both alternatives.

Availability

MC74HCT241ADWG is available at Aetrix Electronics and suitable for memory address buffering, microcontroller bus expansion, industrial PLC backplane interface, and legacy system clock distribution requiring stable component supply across extended temperature ranges and long-lifecycle programs.

Supply support for MC74HCT241ADWG 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 manufacturer specializing in energy-efficient, high-reliability components for automotive, industrial, cloud, and IoT applications.

The MC74HCT241ADWG belongs to onsemi's HCT logic family - designed specifically for TTL-to-CMOS interfacing in legacy system upgrades and industrial control equipment where LSTTL compatibility and wide temperature operation are essential.

FAQ

What is the maximum operating temperature for the MC74HCT241ADWG?

The MC74HCT241ADWG is rated for operation from −55°C to +125°C across all package types, including the SOIC-20W variant. This full industrial temperature range is validated per the Recommended Operating Conditions table in the official datasheet, with all AC/DC parameters guaranteed at 125°C - making MC74HCT241ADWG suitable for under-hood automotive modules and uncooled industrial enclosures.

Does the MC74HCT241ADWG support 3.3 V logic inputs?

No, the MC74HCT241ADWG does not reliably accept 3.3 V logic inputs. Its LSTTL-compatible input thresholds require VIH ≥2.0 V and VIL ≤0.8 V at VCC = 4.5–5.5 V. A 3.3 V high-level signal falls below the minimum VIH spec and may result in undefined switching behavior. For mixed-voltage systems, level-shifting circuitry or a 3.3 V–tolerant logic family (e.g., 74LVC) should be used instead of MC74HCT241ADWG.

What is the purpose of having two separate output enables (Enable A and Enable B) on the MC74HCT241ADWG?

The dual enables on MC74HCT241ADWG - Enable A (active-low, controls YA1–YA4) and Enable B (active-high, controls YB1–YB4) - provide independent 3-state control over two distinct 4-bit data paths. This allows time-multiplexed bus sharing, such as asserting YA outputs during address phase while holding YB outputs high-Z, then reversing roles for data transfer - a capability critical in memory-mapped I/O and dual-port peripheral interfacing where MC74HCT241ADWG replaces discrete enable logic.

Can the MC74HCT241ADWG be used as a drop-in replacement for the 74LS241?

Yes, the MC74HCT241ADWG is explicitly designed as a pinout-identical replacement for the 74LS241, as confirmed in the datasheet: "The MC74HCT241A is identical in pinout to the LS241." It maintains the same SOIC-20 footprint, terminal numbering, and functional mapping, while offering CMOS advantages - lower power, higher noise immunity, and wider voltage tolerance - making MC74HCT241ADWG a direct upgrade path in existing LS241-based designs.

What is the typical power dissipation of the MC74HCT241ADWG under full load?

At VCC = 5.0 V and 25°C, the typical no-load dynamic power consumption of MC74HCT241ADWG is calculated using CPD = 55 pF per enabled output: PD = CPD × VCC² × f + ICC × VCC. With all eight outputs enabled and toggling at 10 MHz, PD ≈ 13.75 mW (dynamic) + 0.22 mW (quiescent) = ~14 mW. Total package power remains well below the SOIC-20W limit of 1302 mW, even at full speed and elevated temperature.

MC74HCT241ADWG Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74HCT

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

Packaging:: Bulk

Product Status:: Obsolete

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

MC74HCT241ADWG FAQ

1.How can I place an order for MC74HCT241ADWG through Aetrix?

Please submit a Request for Quotation (RFQ) for MC74HCT241ADWG 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 MC74HCT241ADWG reliable?

The price and inventory of MC74HCT241ADWG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74HCT241ADWG is usually 5 days.

3.What payment methods are accepted for MC74HCT241ADWG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74HCT241ADWG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC74HCT241ADWG?

MC74HCT241ADWG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC74HCT241ADWG 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 MC74HCT241ADWG?

For technical support, including MC74HCT241ADWG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74HCT241ADWG requirements.

6.How does Aetrix verify that MC74HCT241ADWG is sourced from the original manufacturer or authorized distributors?

All MC74HCT241ADWG 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 MC74HCT241ADWG meets industry standards.

7.What is the process for return or replacement of MC74HCT241ADWG?

All MC74HCT241ADWG units undergo pre-shipment inspection (PSI). If there is an issue with MC74HCT241ADWG, 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 MC74HCT241ADWG part is unused and in its original packaging.

Return procedure for MC74HCT241ADWG:

1.Submit a request within 90 days.

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

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