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Texas Instruments SN74HC241PW
- Part No.:
- SN74HC241PW
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74HC241PW.pdf
- Description:
- IC BUFFER NON-INVERT 6V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:844
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Product details
Overview
SN74HC241PW 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, 80 μA max ICC, and high-current capability supporting up to 15 LSTTL loads. Used in industrial control backplanes and microcontroller I/O expansion.
For engineers reviewing the SN74HC241PW datasheet, SN74HC241PW pinout, SN74HC241PW application, or SN74HC241PW equivalent, this page delivers verified electrical specs, TSSOP-20 package details, functional mode behavior, real-world use cases, and two validated alternative parts - all grounded in TI's SCLS300E revision E (May 2022) production data.
Technical Context
The SN74HC241PW implements two independent 4-bit noninverting buffers, each with dedicated output-enable inputs (1OE and 2OE). Its CMOS design ensures rail-to-rail output swing, low input current (≤1 μA), and compatibility with TTL and CMOS logic families across 2–6 V supply range.
Each buffer enters high-impedance state when its OE is inactive (1OE high or 2OE low), enabling bidirectional bus control without external direction logic. Switching performance is characterized at CL = 50 pF and CL = 150 pF, with tpd = 11 ns (typ) at 4.5 V and 25 °C.
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 designs |
| Output Drive Current | ±6 mA at 5 V - sufficient to directly drive 15 LSTTL loads without external buffers |
| Propagation Delay (tpd) | 11 ns typical at 4.5 V, 25 °C, CL = 50 pF - enables reliable operation in 30 MHz+ address/data strobe paths |
| Quiescent Current (ICC) | 80 μA max at 6 V - enables low-power standby modes in battery-backed or energy-sensitive systems |
| Input Leakage Current | 1 μA max - prevents unintended logic transitions on floating or weakly driven control lines |
| 3-State Output Leakage (IOZ) | ±5 μA max at 6 V - maintains bus integrity during high-Z state with minimal contention current |
| Junction-to-Ambient RθJA | 131.8 °C/W (TSSOP-20) - informs thermal derating for continuous operation at ambient >60 °C |
Pinout & Package
TSSOP-20 package (6.50 mm × 4.40 mm body, 1.2 mm max height), JEDEC MO-153 compliant, lead-free NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | A1–A8 Inputs | Noninverting data inputs for eight buffer channels; accept 2–6 V logic levels |
| 9, 10, 11, 12, 13, 14, 15, 16 | Y1–Y8 Outputs | 3-state buffered outputs; high-Z when corresponding OE is inactive |
| 17 | GND | Ground reference for all internal circuitry and output drivers |
| 18 | VCC | Positive supply rail (2–6 V); requires local 0.1 μF bypass capacitor |
| 19 | 1OE | Active-low enable for Y1–Y4; drives Y1–Y4 to high-Z when high |
| 20 | 2OE | Active-high enable for Y5–Y8; drives Y5–Y8 to high-Z when low |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply voltage range | 2 V–6 V operation enables interoperability across 3.3 V microcontrollers and 5 V peripherals |
| Dual independent 3-state control | Separate 1OE (active-low) and 2OE (active-high) allow asymmetric bus partitioning and selective channel isolation |
| Low power consumption | 80 μA max ICC allows integration into always-on subsystems without significant quiescent load |
| High noise immunity | VIH = 3.15 V / VIL = 1.35 V at 4.5 V supply provides >1.3 V noise margin against ground bounce or crosstalk |
| Bus-compatible output structure | Outputs fully disable to high impedance with <5 μA leakage, preventing bus contention in multi-driver systems |
Applications
| Memory Address Buffering | Microcontroller I/O Expansion |
|---|---|
|
Use Scenario: Driving 16-bit address bus from a 32-bit MCU with partial address decoding. IC Role / Device Role / Timing Role: Noninverting buffer isolating CPU address outputs from high-capacitance PCB traces and multiple peripheral address inputs. Use Value: 11 ns tpd ensures setup/hold timing margins are preserved at 25 MHz bus clock; ±6 mA drive sustains signal integrity over 10 cm FR-4 traces. |
Use Scenario: Expanding GPIO count of an ARM Cortex-M0+ by adding 8 parallel digital outputs. IC Role / Device Role / Timing Role: Level-translating and current-boosting interface between 3.3 V MCU pins and 5 V industrial sensors/actuators. Use Value: 2–6 V supply range eliminates need for external level shifters; 3-state outputs allow shared control of multiple peripherals via common enable lines. |
| Industrial Backplane Interface | Legacy System Bus Isolation |
|
Use Scenario: Interfacing modern FPGA-based controller to legacy ISA-style backplane with 8-bit data and control lines. IC Role / Device Role / Timing Role: Bidirectional bus driver with independent enable control for read/write direction management. Use Value: Dual OE inputs permit separate gating of address vs. data segments; high-Z leakage <5 μA prevents false triggering on unselected slots. |
Use Scenario: Replacing obsolete 74LS241 in repair of vintage test equipment requiring 5 V TTL-compatible buffering. IC Role / Device Role / Timing Role: Pin-compatible CMOS upgrade delivering identical logic function with lower power and higher noise immunity. Use Value: Identical pinout and truth table to 74LS241; 80 μA ICC reduces board-level heat generation by >95% versus original bipolar part. |
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 |
|---|---|---|---|
| SN74HCT241PW | CMOS input thresholds optimized for 5 V TTL compatibility (VIH = 2 V min); identical pinout and drive strength | Better suited for mixed 5 V TTL/CMOS systems where input noise immunity from legacy logic is critical | Select SN74HCT241PW when interfacing directly to 74LS/74ALS outputs without level translation |
| SN74LVC241APW | Lower VCC range (1.65–5.5 V); 24 mA drive at 3.3 V; faster tpd = 5.4 ns (typ) at 3.3 V | Targeted for 3.3 V or mixed-voltage portable/embedded systems requiring higher speed and lower voltage operation | Choose SN74LVC241APW for new 3.3 V designs prioritizing speed and power efficiency over 6 V operation |
Compared with SN74HC241PW, SN74HCT241PW offers superior TTL-input compatibility at 5 V but lacks 2 V operation; SN74LVC241APW delivers higher speed and lower voltage support but sacrifices 6 V headroom and increases layout sensitivity due to faster edge rates.
Availability
SN74HC241PW is available at Aetrix Electronics and suitable for industrial control backplanes, microcontroller I/O expansion, legacy system upgrades, and embedded bus isolation requiring stable component supply and long-term lifecycle continuity.
Supply support for SN74HC241PW 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 experience in high-reliability industrial and automotive-grade components.
The SN74HC241PW belongs to TI's 74HC logic family, engineered for robust 3-state bus interfacing in industrial, computing, and communications infrastructure where wide supply range, low power, and proven reliability are essential.
FAQ
What is the function of pin 19 (1OE) and pin 20 (2OE) on the SN74HC241PW?
Pin 19 (1OE) is an active-low output-enable input controlling Y1–Y4: when low, Y1–Y4 follow A1–A4; when high, they enter high-impedance state. Pin 20 (2OE) is active-high for Y5–Y8: when high, Y5–Y8 follow A5–A8; when low, they go high-Z. This dual-control architecture enables independent gating of two 4-bit data groups within the SN74HC241PW.
Does the SN74HC241PW support operation at 3.3 V, and what are its key performance metrics at that voltage?
Yes, the SN74HC241PW operates across 2 V–6 V, including 3.3 V. At 3.3 V and 25 °C, it delivers ±4 mA output drive, tpd ≈ 15 ns (CL = 50 pF), VIH = 2.31 V min, VIL = 0.99 V max, and ICC ≤ 40 μA - making it suitable for mixed-voltage 3.3 V/5 V system interfacing without level shifters.
Can the SN74HC241PW replace the obsolete 74LS241 in a legacy design?
Yes, the SN74HC241PW is a direct functional and pinout replacement for 74LS241. It matches the same TSSOP-20 footprint, truth table, and I/O configuration. Key advantages include 80 μA vs. 30 mA quiescent current, rail-to-rail output swing, and improved noise immunity - all while maintaining full compatibility with existing SN74HC241PW PCB layouts.
What thermal considerations apply to the SN74HC241PW in continuous operation?
The SN74HC241PW in TSSOP-20 has RθJA = 131.8 °C/W. At 6 V and full 8-channel drive (±6 mA each), worst-case power dissipation is ~288 mW, resulting in ~38 °C junction rise above ambient. For sustained 85 °C ambient operation, derating is required above ~65 °C case temperature - confirmed using TI's SCLS300E thermal data.
Is the SN74HC241PW RoHS compliant, and what is its moisture sensitivity level?
Yes, the SN74HC241PW is RoHS compliant (lead-free NiPdAu finish) and rated MSL Level-1 (unlimited floor life at ≤30 °C/60% RH), per TI's PACKAGE OPTION ADDENDUM. This eliminates bake requirements prior to reflow and supports standard SMT assembly processes without special handling.
SN74HC241PW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 20-TSSOP (0.173", 4.40mm 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:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
SN74HC241PW FAQ
1.How can I place an order for SN74HC241PW through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74HC241PW 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 SN74HC241PW reliable?
The price and inventory of SN74HC241PW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74HC241PW is usually 5 days.
3.What payment methods are accepted for SN74HC241PW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74HC241PW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74HC241PW?
SN74HC241PW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74HC241PW 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 SN74HC241PW?
For technical support, including SN74HC241PW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74HC241PW requirements.
6.How does Aetrix verify that SN74HC241PW is sourced from the original manufacturer or authorized distributors?
All SN74HC241PW 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 SN74HC241PW meets industry standards.
7.What is the process for return or replacement of SN74HC241PW?
All SN74HC241PW units undergo pre-shipment inspection (PSI). If there is an issue with SN74HC241PW, 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 SN74HC241PW part is unused and in its original packaging.
Return procedure for SN74HC241PW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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