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Texas Instruments SN74HC241N
- Part No.:
- SN74HC241N
- Manufacturer:
- Texas Instruments
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
SN74HC241N.pdf
- Description:
- IC BUFFER NON-INVERT 6V 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,155
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Product details
Overview
SN74HC241N from Texas Instruments is an octal noninverting buffer/line driver with dual 3-state outputs, designed for memory address and bus driving in 2 V–6 V systems. It features ±6 mA output drive at 5 V, 11 ns typical propagation delay, and low 80 μA max ICC quiescent current. Used in bidirectional data bus isolation and clock distribution circuits where high-density 3-state control is required.
For engineers reviewing the SN74HC241N datasheet, SN74HC241N pinout, SN74HC241N application, or SN74HC241N equivalent, this page delivers verified functional mode behavior, thermal resistance (RθJA = 84.6 °C/W), input voltage thresholds (VIH = 3.15 V @ 4.5 V VCC), and precise PDIP-20 package dimensions (25.40 mm × 6.35 mm) - all confirmed from TI's production datasheet SCLS300E (May 2022 revision).
Technical Context
The SN74HC241N implements two independent 4-bit noninverting buffers, each with dedicated output-enable inputs (1OE and 2OE). When 1OE is low or 2OE is high, data passes from A inputs to Y outputs; when 1OE is high or 2OE is low, the corresponding Y outputs enter high-impedance state. This enables selective bus loading and memory address gating without inversion.
It operates across 2 V–6 V supply range with CMOS-level input thresholds, supports up to 15 LSTTL loads per output, and maintains rail-to-rail output swing (VOH ≥ 4.4 V, VOL ≤ 0.26 V @ 4.5 V, 6 mA). Its 3-state architecture allows direct connection to shared data/address buses without contention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 6 V - supports mixed-voltage system interfacing and legacy 5 V logic compatibility |
| Propagation Delay (tpd) | 11 ns typical @ 4.5 V, CL = 50 pF - enables reliable operation in high-speed address/data paths up to ~30 MHz |
| Output Drive Current | ±6 mA @ 5 V - sufficient to drive 15 LSTTL loads or terminate short PCB traces without external buffering |
| Quiescent Current (ICC) | 80 μA max @ 6 V - ensures ultra-low static power in battery-backed or always-on control logic |
| Input Leakage Current | 1 μA max - prevents unintended logic transitions on floating or weakly driven inputs |
| 3-State Enable Timing (ten/tdis) | 17 ns typical @ 4.5 V - guarantees clean bus release and acquisition during multiplexed access cycles |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial-grade embedded controllers and instrumentation |
Pinout & Package
SN74HC241N uses a 20-pin Plastic Dual In-line Package (PDIP) with 25.40 mm × 6.35 mm body size and 2.54 mm lead pitch. The package is through-hole mountable, RoHS-compliant, and rated for industrial temperature operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | A1–A8 Inputs | Noninverting data inputs for eight buffer channels; tied to logic sources such as microcontroller ports or memory address lines |
| 9, 10, 11, 12, 13, 14, 15, 16 | Y1–Y8 Outputs | 3-state buffered outputs; high-impedance when respective OE is inactive - enables bus sharing without external switches |
| 17 | 1OE | Active-low enable for first four buffers (Y1–Y4); low = enabled, high = high-Z - allows independent control of upper/lower nibbles |
| 18 | GND | Ground reference for all internal logic and output drivers; must be low-impedance path to minimize noise coupling |
| 19 | VCC | Positive supply (2–6 V); requires local 0.1 μF ceramic bypass capacitor placed adjacent to pin for stable switching |
| 20 | 2OE | Active-high enable for second four buffers (Y5–Y8); high = enabled, low = high-Z - complements 1OE for asymmetric control schemes |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply voltage range | 2 V–6 V operation enables interoperability between 3.3 V microcontrollers and 5 V peripherals without level shifters |
| High-current 3-state outputs | ±6 mA drive capability per output ensures robust signal integrity on loaded buses up to 15 LSTTL units |
| Low-power CMOS design | 80 μA max ICC eliminates thermal concerns in dense logic arrays and extends battery life in portable systems |
| Fast propagation timing | 11 ns typical tpd at 4.5 V supports synchronous memory addressing and clock fanout in sub-30 MHz applications |
| Dual independent 3-state control | Separate 1OE (active-low) and 2OE (active-high) inputs allow flexible partitioning of bus segments for multi-master arbitration |
Applications
| Memory Address Buffering | Bus Transceiver Interface |
|---|---|
|
Use Scenario: Isolating microcontroller address bus from multiple peripheral chips (e.g., SRAM, EPROM, I/O expanders) to prevent contention during read/write cycles. IC Role / Device Role / Timing Role: Noninverting 3-state buffer that gates address signals under CPU control; enables time-multiplexed access to shared memory space. Use Value: Eliminates need for discrete transistors or complex glue logic; reduces board area and improves timing margin via predictable 11 ns delay. |
Use Scenario: Bidirectional data transfer between an FPGA and legacy parallel interface devices (e.g., LCD controllers, ADCs) using a single 8-bit data bus. IC Role / Device Role / Timing Role: Direction-controlled line driver that places outputs in high-Z during FPGA read cycles and drives bus during write cycles. Use Value: Enables full-duplex bus sharing with deterministic enable timing (17 ns ten/tdis), reducing inter-chip skew versus discrete MOSFET solutions. |
| Industrial Clock Distribution | PLC I/O Module Signal Conditioning |
|
Use Scenario: Distributing a master clock signal to multiple synchronous peripherals (e.g., ADCs, DACs, serial interfaces) while maintaining edge integrity across varying load capacitances. IC Role / Device Role / Timing Role: Low-skew, high-drive clock buffer with rail-to-rail output swing; used in fanout stage after oscillator or PLL output. Use Value: Delivers consistent 11 ns tpd and ±6 mA drive to stabilize clock edges across 15+ LSTTL loads - critical for jitter-sensitive sampling systems. |
Use Scenario: Level-shifting and isolating digital I/O signals between a 3.3 V PLC controller and 5 V field sensors/actuators in noisy factory environments. IC Role / Device Role / Timing Role: Robust interface buffer providing ESD-tolerant (±20 mA clamp), high-noise-margin (VIH = 3.15 V @ 4.5 V) signal translation. Use Value: Ensures reliable operation over −40 °C to +85 °C with <1 μA input leakage - prevents false triggering from EMI-induced floating inputs. |
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 |
|---|---|---|---|
| SN74HC244N | Octal noninverting buffer with active-high OE (single enable per 4-bit group); no active-low OE variant | Requires inverted OE logic in systems relying on low-active control signals; identical timing and drive specs | Select SN74HC244N only if existing firmware/hardware already uses active-high enable signaling |
| 74ACT241N | Faster tpd (6 ns @ 5 V), higher ICC (4 mA), TTL-compatible input thresholds (VIH = 2 V min), 4.5–5.5 V only | Better suited for high-speed 5 V-only systems but incompatible with 3.3 V logic without level shifting | Choose 74ACT241N when speed >100 MHz timing closure is required and supply is strictly 5 V |
Compared with SN74HC241N, SN74HC244N simplifies enable logic but loses active-low flexibility, while 74ACT241N trades wider voltage support for raw speed and TTL compatibility - making SN74HC241N optimal for mixed-voltage industrial control where reliability and supply range outweigh peak frequency needs.
Availability
SN74HC241N is available at Aetrix Electronics and suitable for industrial control systems, programmable logic controller (PLC) modules, and embedded memory subsystems requiring stable component supply across extended product lifecycles.
Supply support for SN74HC241N 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 ICs, with decades of heritage in industry-standard logic families.
The SN74HC241N belongs to TI's 74HC high-speed CMOS logic series, engineered for low-power, wide-supply-range digital interfacing in industrial, automotive, and communications equipment.
FAQ
What is the maximum operating voltage for SN74HC241N?
The SN74HC241N supports a recommended operating supply voltage range of 2 V to 6 V, with absolute maximum rating of 7 V. Operation above 6 V risks exceeding electrical specifications and may degrade long-term reliability. All timing and drive parameters in the datasheet are validated within the 2–6 V window, including VIH/VIL thresholds and tpd values.
Does SN74HC241N support 3.3 V logic levels?
Yes, SN74HC241N fully supports 3.3 V operation: VIH is guaranteed ≥1.7 V (min) at VCC = 3.3 V, and VOH reaches ≥3.1 V (min) at 3.3 V with 4 mA load. Its 2–6 V supply range and CMOS input structure make it interoperable with both 3.3 V and 5 V systems without level shifters.
How does the dual output-enable architecture of SN74HC241N work?
SN74HC241N has two independent enables: 1OE (active-low) controls Y1–Y4, and 2OE (active-high) controls Y5–Y8. When 1OE = low, Y1–Y4 follow A1–A4; when 1OE = high, they go high-Z. When 2OE = high, Y5–Y8 follow A5–A8; when 2OE = low, they go high-Z. This allows asymmetric bus segmentation in real-time systems.
What is the thermal resistance (RθJA) of SN74HC241N in PDIP package?
The junction-to-ambient thermal resistance RθJA for SN74HC241N in PDIP-20 package is 84.6 °C/W, as specified in TI's SCLS300E datasheet (May 2022 revision). This value assumes standard JEDEC test board conditions and is critical for calculating maximum allowable power dissipation in enclosed industrial enclosures.
Can SN74HC241N replace SN74LS241 in existing designs?
SN74HC241N can functionally replace SN74LS241 in most cases due to matching pinout, 3-state behavior, and octal buffer function, but requires validation of voltage compatibility: SN74LS241 is TTL-only (4.75–5.25 V), while SN74HC241N operates from 2–6 V. Also verify that 11 ns tpd meets timing budgets previously satisfied by LS-series delays.
SN74HC241N Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- 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:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 20-PDIP
SN74HC241N FAQ
1.How can I place an order for SN74HC241N through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74HC241N 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 SN74HC241N reliable?
The price and inventory of SN74HC241N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74HC241N is usually 5 days.
3.What payment methods are accepted for SN74HC241N?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74HC241N transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74HC241N?
SN74HC241N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74HC241N 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 SN74HC241N?
For technical support, including SN74HC241N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74HC241N requirements.
6.How does Aetrix verify that SN74HC241N is sourced from the original manufacturer or authorized distributors?
All SN74HC241N 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 SN74HC241N meets industry standards.
7.What is the process for return or replacement of SN74HC241N?
All SN74HC241N units undergo pre-shipment inspection (PSI). If there is an issue with SN74HC241N, 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 SN74HC241N part is unused and in its original packaging.
Return procedure for SN74HC241N:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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