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Texas Instruments 74FCT2541ATSOCTE4
- Part No.:
- 74FCT2541ATSOCTE4
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74FCT2541ATSOCTE4.pdf
- Description:
- IC BUF NON-INVERT 5.25V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,253
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Product details
Overview
74FCT2541ATSOCTE4 from Texas Instruments is an octal 3-state noninverting buffer/line driver with edge-rate control, designed for memory address driving, clock distribution, and bus-oriented transmitter/receiver applications. It features 25-Ω output series resistors, 4.8 ns max propagation delay (tPLH/tPHL), ±15 mA output drive, Ioff partial-power-down support, and TTL/CMOS-compatible logic levels.
For engineers reviewing the 74FCT2541ATSOCTE4 datasheet, 74FCT2541ATSOCTE4 pinout, 74FCT2541ATSOCTE4 application, or 74FCT2541ATSOCTE4 equivalent, this device delivers noise-suppressed signal integrity in 5-V industrial bus systems requiring controlled edge rates, high-impedance isolation, and robust ESD protection (2000-V HBM).
Technical Context
The 74FCT2541ATSOCTE4 implements dual 3-state enable logic (OEA and OEB) to independently control eight noninverting outputs, supporting simultaneous or staggered bus gating. Its integrated 25-Ω series output resistors dampen transmission-line reflections without external components.
Edge-rate control circuitry ensures matched rise/fall times and reduces ground bounce and crosstalk. The Ioff feature disables outputs and limits reverse current to ±1 µA when VCC = 0 V, enabling safe back-drive during partial power-down sequences in mixed-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 4.8 ns max (tPLH/tPHL at VCC = 4.75 V, CL = 50 pF) - enables timing-critical 5-V bus interfaces up to ~200 MHz effective data rate |
| Output Drive | –15 mA source / +12 mA sink - drives standard TTL loads and 50-pF transmission lines without buffering |
| Supply Voltage | 4.75 V to 5.25 V - operates within tight 5-V tolerance required for legacy industrial and telecom backplanes |
| Ioff Current | ±1 µA at VCC = 0 V - prevents damaging backflow during hot-insertion or partial system power-down |
| ESD Rating | 2000-V HBM, 200-V MM, 1000-V CDM - exceeds JEDEC JESD22-A114/A115/C101 for board-level reliability |
| Output Series Resistor | 25 Ω typical - suppresses ringing on PCB traces up to 15 cm without discrete termination |
| VOH / VOL | 3.3 V typ / 0.55 V max at IOH = –15 mA, IOL = 12 mA - ensures clean TTL-high margin and CMOS-low compatibility |
Pinout & Package
74FCT2541ATSOCTE4 is housed in a 20-pin SOIC (DW) package, 7.6 mm × 12.6 mm body size, 2.65 mm max height, RoHS-compliant with NIPDAU lead finish and MSL Level-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OEA) | Output Enable A | Active-low enable for outputs O0–O7; asserts 3-state when high |
| 2–9 (D0–D7) | Data Inputs | Noninverting input signals routed to corresponding outputs when enabled |
| 10 (GND) | Ground Reference | Primary return path for all internal logic and output currents |
| 11 (VCC) | Power Supply | +5 V supply rail; decoupling capacitor required within 10 mm |
| 12 (OEB) | Output Enable B | Redundant active-low enable; OR'd internally with OEA for dual-control flexibility |
| 13–20 (O0–O7) | 3-State Outputs | Buffered, edge-controlled, series-terminated outputs; high-impedance when OEA/OEB high |
Key Features
| Feature | Design Value |
|---|---|
| 25-Ω Output Series Resistors | Integrated on-die termination eliminates need for external resistors and saves PCB area in dense bus layouts |
| Edge-Rate Control Circuitry | Actively shapes output transitions to reduce simultaneous switching noise (SSN) and improve signal integrity |
| Ioff Partial-Power-Down Support | Enables live insertion and system-level power sequencing without latch-up or backfeed damage |
| Matched Rise/Fall Times | Minimizes duty-cycle distortion in clock distribution paths and reduces harmonic emissions |
| TTL/CMOS Input Compatibility | Accepts 0.8 V/2.0 V VIH/VIL thresholds and drives 3.3 V VOH - interoperates with legacy and mixed-voltage logic |
Applications
| Memory Address Driver | Clock Distribution Buffer |
|---|---|
|
Use Scenario: Driving address lines from a microcontroller to multiple SRAM or Flash devices on a shared bus. IC Role / Device Role / Timing Role: Noninverting octal buffer with 3-state control isolates inactive memory banks and prevents bus contention. Use Value: 25-Ω series termination suppresses reflections on 10–15 cm address traces, maintaining setup/hold margins across temperature. |
Use Scenario: Distributing a system clock to multiple synchronous peripherals (e.g., ADCs, DACs, FPGAs) with skew control. IC Role / Device Role / Timing Role: Low-skew, edge-controlled fanout buffer delivering matched rise/fall edges to minimize jitter accumulation. Use Value: 4.8 ns max tPLH/tPHL and matched transition times ensure <100 ps inter-output skew under load, preserving timing budgets. |
| Bus Transceiver Interface | Industrial Backplane Driver |
|
Use Scenario: Bidirectional data routing between processor and peripheral modules using shared data bus with direction control. IC Role / Device Role / Timing Role: Octal line driver with dual OE pins enables precise timing of transmit/receive windows via OEA/OEB sequencing. Use Value: Ioff support allows safe hot-swap of peripheral cards while main controller remains powered - no external isolation needed. |
Use Scenario: Driving long parallel control buses (e.g., PLC I/O racks, motor controller command lines) over 20+ cm PCB traces. IC Role / Device Role / Timing Role: Noise-immune line driver with built-in series termination and 2000-V HBM ESD protection for harsh industrial environments. Use Value: Reduced transmission-line reflection noise improves bit error rate in noisy factory settings where cable coupling induces >1 V transients. |
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 |
|---|---|---|---|
| CY74FCT2541CTSOCT | 4.1 ns max propagation delay; lower speed grade with identical pinout, Ioff, and termination | Better suited for cost-sensitive designs where <4.8 ns timing margin is acceptable | Select when tighter propagation delay is not required and lower dynamic power (ICCD = 0.06 mA/MHz) is prioritized |
| SN74FCT2541ATPWR | TSSOP-20 package (DBQ); same electrical specs but 4.4 mm × 6.5 mm footprint and MSL Level-2 | Preferred for space-constrained boards where SOIC real estate is unavailable | Choose for high-density layouts; verify reflow profile matches MSL-2 requirements and thermal relief pad design |
Compared with 74FCT2541ATSOCTE4, the CY74FCT2541CTSOCT trades 0.7 ns speed for reduced dynamic current, while the SN74FCT2541ATPWR maintains identical performance in a smaller, surface-mount-optimized package - neither is pin-compatible with SOIC without layout revision.
Availability
74FCT2541ATSOCTE4 is available at Aetrix Electronics and suitable for memory address driving, clock distribution, and industrial backplane applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 74FCT2541ATSOCTE4 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 solutions, with decades of heritage in high-reliability industrial and automotive ICs.
The 74FCT2541ATSOCTE4 belongs to TI's FCT logic family, engineered for noise-immune 5-V digital interfacing in mission-critical systems where signal integrity, power sequencing, and long-term manufacturability are essential.
FAQ
What is the maximum operating temperature range for the 74FCT2541ATSOCTE4?
The 74FCT2541ATSOCTE4 is rated for operation from –40°C to +85°C ambient temperature, matching industrial-grade requirements. This range is validated across all electrical parameters including propagation delay, output drive, and Ioff leakage, ensuring reliable performance in factory automation, motor control, and outdoor telecom equipment where thermal cycling occurs.
Does the 74FCT2541ATSOCTE4 support hot-swap or partial-power-down operation?
Yes, the 74FCT2541ATSOCTE4 includes Ioff circuitry that limits reverse current to ±1 µA when VCC = 0 V, enabling safe operation during partial-power-down sequences. This allows the 74FCT2541ATSOCTE4 to be used in hot-pluggable modules where downstream logic remains powered while the buffer's VCC is removed - no external isolation diodes are required.
What is the purpose of the dual output-enable inputs (OEA and OEB) on the 74FCT2541ATSOCTE4?
The 74FCT2541ATSOCTE4 features two independent active-low output enables (OEA and OEB) logically OR'd internally. This allows flexible bus control - for example, OEA can serve as primary enable while OEB acts as fault override, or both can be tied together for redundancy. Either input asserted high places all eight outputs in high-impedance state, preventing contention on shared data/address lines.
Can the 74FCT2541ATSOCTE4 interface directly with 3.3-V CMOS logic?
Yes, the 74FCT2541ATSOCTE4 accepts TTL-compatible input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) and produces VOH ≈ 3.3 V (typical) at –15 mA, making it compatible with 3.3-V CMOS inputs. However, its 5-V supply means outputs swing to 5 V when unloaded; level-shifting or series resistance may be needed if driving 3.3-V inputs with strict VIH(max) limits.
How does the 25-Ω output series resistor in the 74FCT2541ATSOCTE4 improve signal integrity?
The 25-Ω on-die series resistor in the 74FCT2541ATSOCTE4 forms a source-termination network with typical PCB trace impedance (~50–75 Ω), reducing reflected energy at the far-end receiver. This suppresses ringing and overshoot on traces up to 15 cm, improving setup/hold timing margins and lowering EMI - eliminating two external 25-Ω resistors per output and saving 16 placement locations on dense boards.
74FCT2541ATSOCTE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74FCT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 15mA, 12mA
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
74FCT2541ATSOCTE4 FAQ
1.How can I place an order for 74FCT2541ATSOCTE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74FCT2541ATSOCTE4 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 74FCT2541ATSOCTE4 reliable?
The price and inventory of 74FCT2541ATSOCTE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74FCT2541ATSOCTE4 is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74FCT2541ATSOCTE4 transactions.
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4.How is shipping managed for 74FCT2541ATSOCTE4?
74FCT2541ATSOCTE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74FCT2541ATSOCTE4 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 74FCT2541ATSOCTE4?
For technical support, including 74FCT2541ATSOCTE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74FCT2541ATSOCTE4 requirements.
6.How does Aetrix verify that 74FCT2541ATSOCTE4 is sourced from the original manufacturer or authorized distributors?
All 74FCT2541ATSOCTE4 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 74FCT2541ATSOCTE4 meets industry standards.
7.What is the process for return or replacement of 74FCT2541ATSOCTE4?
All 74FCT2541ATSOCTE4 units undergo pre-shipment inspection (PSI). If there is an issue with 74FCT2541ATSOCTE4, 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 74FCT2541ATSOCTE4 part is unused and in its original packaging.
Return procedure for 74FCT2541ATSOCTE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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