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Texas Instruments SN74F241DWR
- Part No.:
- SN74F241DWR
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74F241DWR.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,539
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Product details
Overview
SN74F241DWR from Texas Instruments is a noninverting octal buffer/driver with 3-state outputs, designed for memory address driving and bus interfacing in TTL-compatible systems. It features dual independent 4-bit channels, active-low output-enable (1OE/2OE), 5 V supply operation, 64 mA low-level output drive, and operates from 0°C to 70°C.
For engineers reviewing the SN74F241DWR datasheet, SN74F241DWR pinout, SN74F241DWR application, or SN74F241DWR equivalent, this page delivers verified electrical specs, SOIC-20 package details, functional truth table behavior, thermal limits, and real-world substitution guidance - all grounded in TI's SDFS090 production data sheet.
Technical Context
The SN74F241DWR implements two independent 4-bit noninverting buffer sections (1A→1Y and 2A→2Y), each controlled by its own active-low output-enable input (1OE, 2OE). Outputs enter high-impedance state when respective OE is high, enabling bidirectional bus sharing without contention.
It uses standard F-series TTL circuitry with symmetrical input thresholds (VIL = 0.8 V, VIH = 2.0 V), guaranteed 5.5 V absolute max supply, and supports CL = 50 pF load switching with tPLH/tPHL ≤ 6.2 ns at VCC = 4.5–5.5 V. Output disable timing (tPZL/tPHZ) is specified down to 1.2 ns typical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VCC) | 4.5 V to 5.5 V - Ensures compatibility with standard 5 V TTL logic rails and noise margin compliance. |
| Operating Temperature | 0°C to 70°C - Qualified for commercial-grade embedded and industrial control applications. |
| Low-Level Output Current (IOL) | 64 mA - Supports direct drive of multiple TTL inputs or moderate bus capacitance without external buffers. |
| Propagation Delay (tPLH/tPHL) | ≤ 6.2 ns @ VCC = 4.5 V, CL = 50 pF - Enables reliable operation in sub-10 ns timing-critical address/data paths. |
| 3-State Enable/Disable Time | tPZL ≤ 8 ns, tPHZ ≤ 7 ns - Minimizes bus turnaround latency in shared-memory or multiplexed I/O architectures. |
| Input Voltage Thresholds | VIH = 2.0 V, VIL = 0.8 V - Matches legacy TTL logic families for seamless integration into existing 5 V systems. |
| Output Leakage (IOZL/IOZH) | ±50 µA @ VCC = 5.5 V - Guarantees minimal current draw in high-Z state, critical for low-power standby modes. |
Pinout & Package
SN74F241DWR is housed in a 20-pin SOIC (DW) package, 7.5 mm wide, 12.83 mm long, with 1.27 mm pitch and maximum height of 2.65 mm - compatible with standard surface-mount assembly processes and IPC-7351 land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low output-enable controls for Channel 1 and Channel 2 respectively; both must be low for corresponding Y outputs to drive. |
| 2, 4, 6, 8 | 1A1–1A4 | Noninverting inputs for first 4-bit buffer channel; directly drive 1Y1–1Y4 when 1OE = L. |
| 3, 5, 7, 9 | 2Y4–2Y1 | Inverted pin order outputs for second channel; 2Y4 = Pin 3, 2Y3 = Pin 5, etc., per TI top-view diagram. |
| 11, 13, 15, 17 | 2A1–2A4 | Noninverting inputs for second 4-bit channel; enable 2Y1–2Y4 only when 2OE = L. |
| 12, 14, 16, 18 | 1Y1–1Y4 | Noninverting outputs for first channel; high-impedance when 1OE = H. |
| 10 | GND | Ground reference for all logic and output stages; requires low-impedance PCB connection. |
| 20 | VCC | +5 V power supply; decoupling capacitor (0.1 µF) recommended adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4-bit channels | Enables separate control of two memory banks or peripheral buses using discrete OE signals. |
| 3-State outputs with fast disable | tPZL ≤ 8 ns ensures rapid bus release, reducing contention risk in multi-master systems. |
| TTL-compatible input thresholds | VIL = 0.8 V / VIH = 2.0 V guarantees interoperability with legacy 74LS, 74S, and other F-series devices. |
| High sink current capability | 64 mA IOL allows direct termination of unterminated stubs or fanout to ≥10 standard TTL loads. |
| SOIC-20 RoHS-compliant packaging | DW package meets lead-free reflow standards (Level-1-260°C) and supports automated pick-and-place. |
Applications
| Memory Address Buffering | System Bus Isolation |
|---|---|
Use Scenario: Driving 16-bit address lines from a microprocessor to multiple memory ICs on a shared bus. IC Role / Device Role / Timing Role: Noninverting buffer with 3-state control acts as address latch driver, isolating CPU from memory during DMA cycles. Use Value: 64 mA sink current and 6.2 ns propagation delay ensure setup/hold timing margins are met across full address range under worst-case loading. |
Use Scenario: Preventing signal contention between two microcontrollers sharing a common data bus via time-multiplexed access. IC Role / Device Role / Timing Role: Bidirectional bus driver with independent OE control enables clean handoff between masters without glitching. Use Value: Sub-8 ns output disable time minimizes bus turnaround overhead, supporting >15 MHz burst transfer rates. |
| Legacy System Upgrade Interface | Industrial I/O Expansion |
Use Scenario: Interfacing modern FPGA-based controllers to legacy TTL peripherals (e.g., EPROMs, parallel DACs) requiring 5 V logic levels. IC Role / Device Role / Timing Role: Level-shifting and fanout buffer maintaining TTL voltage thresholds while adding 3-state isolation. Use Value: Guaranteed VIH/VIL alignment eliminates need for external level translators or resistor networks in retrofit designs. |
Use Scenario: Expanding digital I/O count on PLC backplanes where space-constrained SOIC packaging is required. IC Role / Device Role / Timing Role: Compact octal driver providing isolated, high-current outputs for relay/solenoid control logic. Use Value: SOIC-20 footprint fits dense industrial PCB layouts while delivering 64 mA per channel for direct coil drive. |
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 |
|---|---|---|---|
| SN74LS241N | Lower drive (IOL = 24 mA), slower speed (tPLH up to 25 ns), same SOIC/PDIP pinout. | Suitable for low-speed, low-power legacy systems where fanout < 5 is acceptable. | Choose if BOM cost sensitivity outweighs performance; not drop-in due to timing and drive mismatch. |
| SN74ACT241DW | CMOS technology, wider VCC range (4.5–5.5 V), higher noise immunity (VIH = 3.5 V), identical pinout and function. | Better for mixed-signal environments with EMI concerns or where TTL-to-CMOS interfacing is needed. | Select when upgrading from F-series for improved noise margin and lower ICC; pin-compatible but verify VIH compatibility with upstream drivers. |
Compared with SN74F241DWR, SN74LS241N trades speed and drive for lower power, while SN74ACT241DW retains pinout and function but upgrades to CMOS robustness - making it the preferred migration path for new designs requiring enhanced noise immunity without layout change.
Availability
SN74F241DWR is available at Aetrix Electronics and suitable for memory subsystem buffering, industrial bus isolation, and legacy TTL interface applications requiring stable component supply and long-term manufacturability assurance.
Supply support for SN74F241DWR 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 founded in 1930, delivering analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN74F241DWR belongs to TI's 74F logic family - engineered for high-speed, low-latency bus interfacing in 5 V TTL systems, emphasizing timing precision, drive strength, and backward compatibility.
FAQ
What is the maximum output sink current rating for SN74F241DWR?
The SN74F241DWR is rated for 64 mA low-level output current (IOL) under recommended operating conditions (VCC = 4.5 V, TA = 0°C to 70°C). This value is confirmed in the "electrical characteristics" table of TI's SDFS090 datasheet and reflects sustained DC drive capability per output pin without exceeding thermal limits.
Does SN74F241DWR support 3.3 V logic interfaces?
No - SN74F241DWR is a 5 V-only TTL device. Its input thresholds (VIH = 2.0 V, VIL = 0.8 V) and absolute maximum ratings (e.g., VI ≤ 7 V) are defined for 5 V operation. Driving it from 3.3 V sources risks marginal VIH recognition; level-shifting is required for reliable interfacing with 3.3 V systems.
Is SN74F241DWR pin-compatible with SN74F240?
No - SN74F241DWR has noninverting outputs, while SN74F240 provides inverting outputs. Though both are octal 3-state buffers in 20-pin packages, their logic polarity differs, and pin assignments for A/Y signals are not identical. Direct replacement would invert signal paths and break functionality.
What is the thermal operating limit for SN74F241DWR?
SN74F241DWR is characterized for operation from 0°C to 70°C ambient temperature (commercial grade). This range is explicitly stated in the "recommended operating conditions" table of the SDFS090 datasheet and defines the validated junction temperature envelope for reliable parametric performance.
Can SN74F241DWR drive a 50 pF bus load at 10 MHz?
Yes - with tPLH/tPHL ≤ 6.2 ns and CL = 50 pF specified in the "switching characteristics" table, SN74F241DWR supports clean signal edges at frequencies up to ~80 MHz (based on 1/(2 × max delay)). At 10 MHz, timing margins remain robust even with board trace capacitance and fanout loading.
SN74F241DWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74F
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 15mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
SN74F241DWR FAQ
1.How can I place an order for SN74F241DWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74F241DWR 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 SN74F241DWR reliable?
The price and inventory of SN74F241DWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74F241DWR is usually 5 days.
3.What payment methods are accepted for SN74F241DWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74F241DWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74F241DWR?
SN74F241DWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74F241DWR 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 SN74F241DWR?
For technical support, including SN74F241DWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74F241DWR requirements.
6.How does Aetrix verify that SN74F241DWR is sourced from the original manufacturer or authorized distributors?
All SN74F241DWR 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 SN74F241DWR meets industry standards.
7.What is the process for return or replacement of SN74F241DWR?
All SN74F241DWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74F241DWR, 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 SN74F241DWR part is unused and in its original packaging.
Return procedure for SN74F241DWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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