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NXP Semiconductors 74HC241N,652
- Part No.:
- 74HC241N,652
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
74HC241N,652.pdf
- Description:
- IC BUFFER NON-INVERT 6V 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,691
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Product details
Overview
74HC241N,652 from Nexperia is an octal non-inverting 3-state buffer/line driver in a 20-pin DIP package, operating at 2.0–6.0 V supply, with typical propagation delay of 7 ns at 5 V and bus-driver output capability for TTL- and CMOS-compatible systems. It serves as bidirectional data interface control in memory address/data bus isolation and microcontroller peripheral expansion.
For engineers reviewing the 74HC241N,652 datasheet, 74HC241N,652 pinout, 74HC241N,652 application, or 74HC241N,652 equivalent, key selection considerations include 3-state enable polarity (1OE active LOW, 2OE active HIGH), dual independent output groups, propagation delay vs. supply voltage, bus drive strength, and DIP-20 mechanical compatibility with legacy through-hole PCB layouts.
Technical Context
The 74HC241N,652 implements two independent 4-bit non-inverting buffer sections-Group 1 (1A0–1A3 → 1Y0–1Y3, enabled by 1OE) and Group 2 (2A0–2A3 → 2Y0–2Y3, enabled by 2OE)-with complementary 3-state control logic. Each group supports high-impedance output disable under defined input conditions per function table.
It complies with JEDEC Standard No. 7A and exhibits CMOS input characteristics (CI = 3.5 pF) with TTL-compatible output drive levels. Propagation delay varies with VCC (e.g., 9 ns typ. at 2.0 V, 7 ns at 5 V, 100 ns max. over full temperature range), and 3-state timing (tPZH/tPLZ up to 45 ns) is specified under CL = 50 pF load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.0 V to 6.0 V - supports mixed-voltage system interfacing and battery-powered logic level translation |
| Propagation Delay (tPHL/tPLH) | 7 ns typical at VCC = 5 V, CL = 15 pF - enables reliable operation in 100 MHz+ bus timing margins |
| 3-State Enable Time (tPZH/tPZL) | 11 ns typical at VCC = 5 V, CL = 50 pF - ensures fast bus arbitration in shared-data-path applications |
| Input Capacitance (CI) | 3.5 pF - minimizes capacitive loading on driving gates and preserves signal integrity in fan-out-critical designs |
| Power Dissipation Cap. (CPD) | 30 pF per buffer - allows accurate dynamic power estimation using PD = CPD × VCC² × fi + Σ(CL × VCC² × fo) |
| Output Drive | Bus driver capability - delivers ±7.8 mA output current at VCC = 4.5 V, sufficient for driving 10 LSTTL loads |
Pinout & Package
74HC241N,652 is housed in a 20-pin plastic dual in-line package (DIP) with 0.3-inch body width and standard through-hole mounting footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OE | Active-LOW enable for Group 1 outputs (1Y0–1Y3); asserts low to enable non-inverting pass-through |
| 2,4,6,8 | 1A0–1A3 | Data inputs for Group 1; routed directly to corresponding 1Yn outputs when 1OE = LOW |
| 3,5,7,9 | 2Y0–2Y3 | Outputs for Group 2; driven only when 2OE = HIGH |
| 10 | GND | Ground reference for all internal circuitry and I/O |
| 11,13,15,17 | 2A0–2A3 | Data inputs for Group 2; non-inverting path to 2Yn outputs when 2OE = HIGH |
| 12,14,16,18 | 1Y0–1Y3 | Outputs for Group 1; enter high-impedance state when 1OE = HIGH |
| 19 | 2OE | Active-HIGH enable for Group 2 outputs (2Y0–2Y3); asserts high to enable pass-through |
| 20 | VCC | Positive supply rail; must be decoupled locally to suppress switching noise |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4-bit buffers | Enables simultaneous but separately controlled data routing for two subsystems (e.g., CPU and DMA) without inter-group contention |
| Complementary 3-state enables | 1OE (active LOW) and 2OE (active HIGH) allow flexible control logic integration - e.g., direct connection to active-HIGH reset or chip-select signals |
| JEDEC 7A compliance | Guarantees interoperability with industry-standard LSTTL and HC/HCT logic families in mixed-technology systems |
| Wide VCC range (2.0–6.0 V) | Supports operation across 3.3 V and 5 V domains, simplifying voltage-level bridging in legacy-to-modern upgrades |
Applications
| Memory Address Bus Isolation | Microcontroller Peripheral Expansion |
|---|---|
Use Scenario: Isolating CPU address lines from multiple memory banks to prevent bus contention during bank switching. IC Role / Device Role / Timing Role: 74HC241N,652 acts as a directionally transparent, 3-state-controlled address latch driver with sub-10 ns propagation ensuring setup/hold timing compliance. Use Value: Enables deterministic address decoding without added clock latency or external latching, reducing BOM count and board space. | Use Scenario: Expanding GPIO count of an 8-bit MCU by buffering parallel I/O lines to external peripherals (e.g., LCD, keypad, ADC). IC Role / Device Role / Timing Role: 74HC241N,652 provides isolated, high-drive-strength output buffering with independent enable control per group for selective peripheral activation. Use Value: Eliminates signal degradation over longer traces and supports hot-plug-safe peripheral enable/disable via 3-state control. |
| Legacy System Bus Arbitration | Industrial Control Backplane Interface |
Use Scenario: Managing shared data bus access among multiple controllers (e.g., main CPU, co-processor, diagnostic module) in industrial PLC backplanes. IC Role / Device Role / Timing Role: 74HC241N,652 functions as a bus transceiver enabler - its dual 3-state groups isolate each controller's data path during inactive cycles. Use Value: Prevents bus contention faults and eliminates need for complex arbitration logic or additional bus switches. | Use Scenario: Interfacing modular I/O cards (digital input/output, analog modules) to a central controller via standardized 20-pin backplane connector. IC Role / Device Role / Timing Role: 74HC241N,652 serves as a robust, through-hole-mountable bus driver that withstands repeated insertion cycles and ESD events in field-deployed equipment. Use Value: Provides consistent 7.8 mA drive strength and 3.5 pF input loading across modules, ensuring signal integrity and timing predictability. |
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 |
|---|---|---|---|
| SN74HC241N | Same logic function and pinout; TI version has identical AC/DC specs but slightly higher max tPLH (105 ns vs. 100 ns at −40°C to +125°C) | Qualified to AEC-Q100 Grade 1; preferred for automotive-qualified designs where extended temperature validation is required | Select SN74HC241N when automotive qualification or TI-specific supply chain alignment is mandated |
| 74HCT241N,652 | Same pinout and function; HCT variant features TTL-compatible input thresholds (VIH = 2.0 V min) instead of CMOS (VCC × 0.5) | Better suited for direct interfacing with legacy 5 V TTL outputs without level-shifting; higher ICC at VCC = 5 V due to input stage design | Choose 74HCT241N,652 when connecting to 74LS or 74F series drivers and maintaining strict input voltage compatibility is critical |
Compared with SN74HC241N and 74HCT241N,652, the 74HC241N,652 offers optimal balance of low dynamic power (CPD = 30 pF), wide VCC tolerance, and proven reliability in industrial through-hole systems - making it ideal for cost-sensitive, long-lifecycle embedded control applications where CMOS input compatibility suffices.
Availability
74HC241N,652 is available at Aetrix Electronics and suitable for memory bus isolation, microcontroller I/O expansion, and industrial backplane interface applications requiring stable component supply and long-term obsolescence management.
Supply support for 74HC241N,652 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
Nexperia is a global leader in discrete, logic, and PowerMOS semiconductors, formed in 2017 from the former NXP Standard Products division, with focus on automotive, industrial, computing, and consumer markets.
The 74HC241N,652 belongs to Nexperia's 74HC/HCT logic family - designed specifically for high-speed, low-power, pin-compatible replacement of legacy TTL in industrial control, instrumentation, and legacy-system upgrade applications.
FAQ
What is the supply voltage range supported by the 74HC241N,652?
The 74HC241N,652 operates across a supply voltage range of 2.0 V to 6.0 V. This wide range allows interoperability between 3.3 V and 5 V logic domains and supports battery-backed or variable-voltage industrial systems. At 2.0 V, propagation delay increases to ~9 ns typical; at 6.0 V, maximum ratings must be observed to avoid overstress. The 74HC241N,652 maintains guaranteed functionality and timing across this full range per JEDEC 7A specifications.
How do the two output enable inputs (1OE and 2OE) differ in logic polarity?
The 74HC241N,652 features complementary enable polarities: 1OE is active LOW (outputs enabled when logic LOW), while 2OE is active HIGH (outputs enabled when logic HIGH). This allows direct connection to different control signal types - for example, 1OE can tie to a processor's active-low chip select, and 2OE to an active-high peripheral enable. Both controls operate independently, enabling selective activation of Group 1 (1Y0–1Y3) or Group 2 (2Y0–2Y3) without cross-talk.
Does the 74HC241N,652 support hot-swap or live-insertion in backplane applications?
The 74HC241N,652 is not explicitly rated for hot-swap operation, but its 3-state outputs and CMOS input structure provide inherent robustness against bus contention during insertion. When powered and held in high-impedance state (1OE = HIGH, 2OE = LOW), the 74HC241N,652 presents minimal loading to live backplanes. For certified hot-swap systems, external current-limiting or sequencing circuitry remains recommended - however, the 74HC241N,652's proven use in industrial backplanes confirms field reliability under controlled insertion conditions.
What is the maximum output drive capability of the 74HC241N,652?
The 74HC241N,652 delivers ±7.8 mA output current per pin at VCC = 4.5 V, meeting bus-driver classification per datasheet. This supports driving up to 10 LSTTL loads or equivalent capacitive loads ≤50 pF with maintained VOH/VOL margins. Output voltage swing remains within 0.1 V of rails under these conditions. Exceeding this drive limit risks timing degradation or VIH/VIL violation on driven devices - always verify load capacitance and fan-out in final layout.
Is the 74HC241N,652 pin-compatible with older 74LS241 devices?
Yes, the 74HC241N,652 is pin-compatible with the 74LS241, sharing identical 20-pin DIP pinout and functional mapping (1A0–1A3, 1Y0–1Y3, 2A0–2A3, 2Y0–2Y3, 1OE, 2OE, GND, VCC). However, electrical differences exist: 74HC241N,652 uses CMOS inputs (VIH = 3.5 V min at VCC = 5 V) versus TTL inputs (VIH = 2.0 V) in 74LS241. Level-shifting may be needed when driving 74HC241N,652 from LS outputs, though 74HCT241N,652 is optimized for that use case.
74HC241N,652 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HC
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 20-DIP
74HC241N,652 FAQ
1.How can I place an order for 74HC241N,652 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC241N,652 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 74HC241N,652 reliable?
The price and inventory of 74HC241N,652 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC241N,652 is usually 5 days.
3.What payment methods are accepted for 74HC241N,652?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC241N,652 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC241N,652?
74HC241N,652 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC241N,652 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 74HC241N,652?
For technical support, including 74HC241N,652 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC241N,652 requirements.
6.How does Aetrix verify that 74HC241N,652 is sourced from the original manufacturer or authorized distributors?
All 74HC241N,652 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 74HC241N,652 meets industry standards.
7.What is the process for return or replacement of 74HC241N,652?
All 74HC241N,652 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC241N,652, 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 74HC241N,652 part is unused and in its original packaging.
Return procedure for 74HC241N,652:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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