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NXP Semiconductors N74F241D,623
- Part No.:
- N74F241D,623
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
N74F241D,623.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,040
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Product details
Overview
N74F241D,623 from Philips Semiconductors is an octal 3-state buffer IC designed for bidirectional bus interface applications in TTL-compatible digital systems. It features two independent output-enable controls (OEa, OEb), sinks up to 64 mA per output, sources up to 15 mA, and delivers 4.0 ns typical propagation delay at 5 V. It is commonly used to drive memory address registers and data buses in industrial control logic.
For engineers reviewing the N74F241D,623 datasheet, N74F241D,623 pinout, N74F241D,623 application, or N74F241D,623 equivalent, key selection criteria include dual 4-bit 3-state enable architecture, ±10% VCC tolerance (4.5–5.5 V), IOL/IOH ratings of 64 mA/–15 mA, and SO20 (SOT163-1) surface-mount package compatibility.
Technical Context
The N74F241D,623 implements a dual-gated octal buffer with logically independent enable inputs controlling two groups of four outputs each (Ya0–Ya3 and Yb0–Yb3). Its TTL-compatible input thresholds (VIL = 0.8 V, VIH = 2.0 V) ensure interoperability with standard 74F/74LS families.
It operates strictly within commercial temperature range (0 °C to +70 °C) and supports high-fan-out bus loading: each output drives up to 750 FAST unit loads in LOW state and 106.7 in HIGH state, with total supply current typ. 53 mA at 5 V and 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74F TTL - ensures compatibility with legacy 74F/74LS systems and fast switching performance |
| Propagation Delay | 4.0 ns typical - enables reliable operation in high-speed address/data bus timing paths |
| Output Drive | 64 mA sink / –15 mA source - sufficient to directly drive multiple TTL inputs or small capacitive loads |
| Supply Voltage | 4.5–5.5 V - accommodates standard 5 V ±10% rail with margin for ripple and drop |
| Operating Temperature | 0 °C to +70 °C - certified for commercial-grade embedded and industrial control environments |
| Input Loading | 1.0/2.67 FAST units (HIGH/LOW) - defines fan-out capability without external buffering |
| Package Type | SOT163-1 (SO20, 7.5 mm body width) - surface-mount footprint compatible with automated PCB assembly |
Pinout & Package
Package: Plastic small outline (SO20), 20-pin, 7.5 mm body width, JEDEC MS-013 compliant (SOT163-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OEa, OEb | Active-low output enable inputs - independently gate Ya0–Ya3 and Yb0–Yb3 groups into high-impedance state |
| 2–5, 14–17 | Ia0–Ia3, Ib0–Ib3 | Data inputs - accept TTL-level signals for corresponding output channels |
| 6–9, 11–13, 18 | Yb0–Yb3, Ya0–Ya3 | 3-state buffered outputs - drive bus lines with controlled sourcing/sinking and high-Z isolation |
| 10 | GND | Ground reference - common return for all internal logic and I/O circuits |
| 20 | VCC | Positive supply - powers internal logic and output drivers; requires local decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 3-state control | OEa and OEb allow selective isolation of two 4-bit bus segments without shared timing constraints |
| High-current output capability | 64 mA sink per output supports direct connection to multiple TTL loads or moderate-capacitance traces |
| TTL-compatible input thresholds | VIL ≤ 0.8 V and VIH ≥ 2.0 V guarantee robust noise margin and interoperability with 74F/74LS families |
| Low propagation delay | 4.0 ns typical tPLH/tPHL enables use in sub-250 MHz bus cycles with timing margin |
| SO20 surface-mount package | SOT163-1 footprint reduces board area vs. DIP and supports reflow soldering in volume production |
Applications
| Memory Address Bus Driver | Industrial PLC I/O Expansion |
|---|---|
Use Scenario: Driving 16-bit address lines from microcontroller or FPGA to SRAM or EPROM chips in embedded systems. IC Role / Device Role / Timing Role: Bidirectional octal buffer isolating and strengthening address signals with independent segment enables. Use Value: Prevents bus contention during memory access cycles and maintains signal integrity across 10–15 cm PCB traces. | Use Scenario: Interfacing modular I/O cards to backplane bus in programmable logic controllers. IC Role / Device Role / Timing Role: Level-shifting and fan-out buffer for parallel status/control data between CPU and peripheral modules. Use Value: Enables hot-swap-safe 3-state control per module group using OEa/OEb for sequential initialization. |
| Legacy System Bus Isolation | Test Equipment Signal Conditioning |
Use Scenario: Isolating legacy 74F-based subsystems (e.g., CRT controller, floppy interface) from modern MCU buses. IC Role / Device Role / Timing Role: Voltage- and timing-compatible buffer providing galvanic separation via high-Z disable states. Use Value: Eliminates need for level translators while preserving 4 ns timing margins in mixed-generation designs. | Use Scenario: Conditioning parallel trigger and status signals in automated test equipment rack interfaces. IC Role / Device Role / Timing Role: Synchronizing and driving multiple DUT control lines with precise enable sequencing. Use Value: Dual OE inputs allow staggered activation of test vectors, reducing simultaneous switching noise on shared power rails. |
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 |
|---|---|---|---|
| SN74F241N | Dual-in-line (DIP20, SOT146-1); identical electrical specs but through-hole mounting | Preferred for prototyping, breadboarding, or legacy repair where SO20 rework is impractical | Select when manual assembly, socketing, or thermal cycling reliability outweighs board space savings |
| 74ACT241PW | Advanced CMOS (74ACT); 4.5–5.5 V supply, 12 mA IOL, 3.5 ns max tPD, SO20 package | Lower power (ICCZ ≈ 4 µA), higher noise immunity, but reduced drive strength vs. N74F241D,623 | Choose for low-noise, low-power systems where 12 mA sink suffices and TTL compatibility is not required |
Compared with SN74F241N and 74ACT241PW, the N74F241D,623 provides superior current drive (64 mA) and proven TTL timing behavior in SO20 form factor-making it optimal for industrial bus driving where robustness and legacy compatibility are critical.
Availability
N74F241D,623 is available at Aetrix Electronics and suitable for industrial control systems, legacy system upgrades, and test equipment requiring stable component supply and long-term obsolescence management.
Supply support for N74F241D,623 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
Philips Semiconductors (now NXP Semiconductors) is a global semiconductor innovator with leadership in analog, logic, and interface solutions for industrial, automotive, and consumer markets.
The 74F logic family-including N74F241D,623-was engineered for high-speed, low-latency digital interfacing in commercial-grade systems where TTL compatibility and predictable timing are essential.
FAQ
What is the maximum operating temperature for N74F241D,623?
The N74F241D,623 is rated for commercial temperature operation from 0 °C to +70 °C. This range is defined in the Recommended Operating Conditions table of the Philips product data sheet and applies to all DC and AC specifications. Operation outside this range may result in parametric degradation or functional failure. The N74F241D,623 does not support extended or industrial temperature grades.
Does N74F241D,623 support 3.3 V operation?
No, the N74F241D,623 is specified only for 4.5–5.5 V supply operation. Its input thresholds (VIH = 2.0 V min, VIL = 0.8 V max) and output drive characteristics are optimized for 5 V TTL systems. Applying 3.3 V to VCC will result in undefined logic levels, insufficient output swing, and potential latch-up. For 3.3 V systems, consider logic families such as 74LVC or 74ALVC instead of N74F241D,623.
How are the two output-enable inputs (OEa and OEb) used in practice with N74F241D,623?
In the N74F241D,623, OEa controls outputs Ya0–Ya3 and OEb controls Yb0–Yb3. Both are active-low: pulling either low enables its respective 4-bit group; pulling high places those outputs in high-impedance state. This allows independent bus segment control-for example, enabling Ya0–Ya3 during address phase and Yb0–Yb3 during data phase-reducing contention and simplifying timing in multiplexed interfaces.
What is the absolute maximum output current rating for N74F241D,623?
The absolute maximum low-level output current (IOL) for N74F241D,623 is 128 mA per output, as stated in the Absolute Maximum Ratings table. However, the recommended operating condition specifies 64 mA maximum for reliable continuous operation. Exceeding 64 mA risks thermal overstress and accelerated wear; sustained 128 mA is only permissible for short-duration pulse conditions and must be validated per application thermal design.
Is N74F241D,623 pin-compatible with other 74F-series octal buffers like 74F240 or 74F244?
No, the N74F241D,623 is not pin-compatible with 74F240 or 74F244. While all are 20-pin SO20 devices, the N74F241D,623 has dual active-low enables (OEa/OEb) and non-inverting outputs, whereas 74F240 uses dual enables with inverting outputs and 74F244 uses single enable with non-inverting outputs. Pin assignments differ significantly-especially for enable and output terminals-so direct substitution would require PCB redesign.
N74F241D,623 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- 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-SO
N74F241D,623 FAQ
1.How can I place an order for N74F241D,623 through Aetrix?
Please submit a Request for Quotation (RFQ) for N74F241D,623 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 N74F241D,623 reliable?
The price and inventory of N74F241D,623 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for N74F241D,623 is usually 5 days.
3.What payment methods are accepted for N74F241D,623?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for N74F241D,623 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for N74F241D,623?
N74F241D,623 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your N74F241D,623 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 N74F241D,623?
For technical support, including N74F241D,623 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your N74F241D,623 requirements.
6.How does Aetrix verify that N74F241D,623 is sourced from the original manufacturer or authorized distributors?
All N74F241D,623 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 N74F241D,623 meets industry standards.
7.What is the process for return or replacement of N74F241D,623?
All N74F241D,623 units undergo pre-shipment inspection (PSI). If there is an issue with N74F241D,623, 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 N74F241D,623 part is unused and in its original packaging.
Return procedure for N74F241D,623:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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