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Texas Instruments CY74FCT2541ATSOC
- Part No.:
- CY74FCT2541ATSOC
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CY74FCT2541ATSOC.pdf
- Description:
- IC BUF NON-INVERT 5.25V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:368
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Product details
Overview
CY74FCT2541ATSOC from Texas Instruments is an octal 3-state noninverting buffer/line driver with 25-Ω series output resistors, designed for memory-address driving, clock distribution, and bus-oriented transmitter/receiver applications in 5-V TTL/CMOS systems. It features Ioff partial-power-down support, matched rise/fall times, 4.8 ns max propagation delay, 15-mA source/12-mA sink drive, and reduced transmission-line reflection noise.
For engineers reviewing the CY74FCT2541ATSOC datasheet, CY74FCT2541ATSOC pinout, CY74FCT2541ATSOC application, or CY74FCT2541ATSOC equivalent, this page delivers verified functional identity, SOIC-20 package mapping, true 3-state timing behavior, Ioff-enabled power-down operation, and validated alternatives for noise-sensitive digital interface upgrades.
Technical Context
The CY74FCT2541ATSOC implements dual active-low 3-state enable inputs (OEA and OEB) controlling eight noninverting buffered outputs. Its edge-rate control circuitry and integrated 25-Ω series output resistors suppress signal reflections without external termination components.
It operates across –40°C to +85°C with 4.75–5.25 V supply, supports TTL-level inputs and CMOS-compatible outputs (VOH = 3.3 V typ), and uses Ioff to block current backflow during partial power-down-enabling hot-insertion and mixed-voltage system compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | Max 4.8 ns (tPLH/tPHL), enabling high-speed address/data bus buffering at >100 MHz system clock rates |
| Output Drive | ±15 mA (source/sink), sufficient to drive 50-Ω transmission lines or multiple TTL loads directly |
| Supply Voltage | 4.75–5.25 V, compatible with standard 5-V logic rails and tolerant of typical board-level ripple |
| Ioff Current | ±1 µA at VCC = 0 V, preventing damaging back-current when powered down in live backplane environments |
| Output Series Resistance | 20–40 Ω (typ 25 Ω), integrated on-die termination eliminating need for external series resistors on PCB |
| ESD Protection | 2000-V HBM, 200-V MM, 1000-V CDM-meets industrial-grade robustness requirements |
| Operating Temperature | –40°C to +85°C, qualified for extended industrial and telecom infrastructure use |
Pinout & Package
SOIC-20 (DW package), 7.5 mm × 12.8 mm body, 1.27 mm pitch, 2.65 mm max height, JEDEC MS-013 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OEA, OEB | Active-low 3-state enables: both must be low for output drivers to be active; independent control allows interleaved bus access |
| 2–9 | D0–D7 | Noninverting data inputs; TTL/CMOS compatible thresholds (VIH = 2 V min, VIL = 0.8 V max) |
| 11–18 | O0–O7 | 3-state buffered outputs with integrated 25-Ω series resistance; high-impedance state entered when either OEA or OEB is high |
| 10 | GND | Ground reference for all input/output signals and internal logic |
| 20 | VCC | 5-V power supply; decoupling capacitor required within 1 cm for stable switching performance |
Key Features
| Feature | Design Value |
|---|---|
| On-die 25-Ω output series resistors | Eliminates discrete termination components, reduces PCB area and BOM count while suppressing transmission-line ringing |
| Ioff partial-power-down protection | Enables safe insertion/removal in powered-backplane systems by blocking reverse current flow when VCC = 0 V |
| Matched rise/fall times | Minimizes duty-cycle distortion on clock or strobe signals, critical for synchronous bus timing integrity |
| TTL-compatible input thresholds | Direct interface with legacy 5-V TTL without level-shifting, reducing design complexity and component count |
| Reduced VOH (3.3 V typ) | Improves noise margin against 3.3-V CMOS receivers while maintaining full 5-V fanout capability |
Applications
| Memory Address Buffering | Industrial Bus Transceiver |
|---|---|
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 synchronizing address latching across memory chips. Use Value: Integrated 25-Ω output resistors prevent signal overshoot/undershoot on long traces, ensuring clean setup/hold timing margins. | Use Scenario: Bidirectional data transfer between PLC CPU and field I/O modules over 20-cm ribbon cable. IC Role / Device Role / Timing Role: Bus-oriented transmitter/receiver managing direction control via OEA/OEB for half-duplex communication. Use Value: Matched rise/fall times preserve signal symmetry, minimizing jitter accumulation across multi-drop RS-485-like interfaces. |
| Clock Distribution Network | Legacy System Interface Adapter |
Use Scenario: Distributing a 25-MHz system clock to FPGA configuration logic, ADC sampling control, and DAC update triggers. IC Role / Device Role / Timing Role: Low-skew clock driver with controlled edge rate to reduce EMI and crosstalk in mixed-signal layouts. Use Value: Edge-rate control circuitry limits dV/dt, lowering radiated emissions below CISPR 22 Class B limits without added ferrites. | Use Scenario: Interfacing a modern ARM-based controller (3.3-V I/O) with legacy 5-V peripheral ASICs in medical diagnostic equipment. IC Role / Device Role / Timing Role: Level-tolerant buffer enabling direct connection between voltage domains using Ioff and TTL-compatible inputs. Use Value: Ioff blocks backfeed during power sequencing mismatches, preventing latch-up in unpowered peripherals during boot-up. |
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 |
|---|---|---|---|
| CY74FCT2541CTSOC | 4.1 ns max propagation delay (vs. 4.8 ns); identical pinout, package, and electrical specs otherwise | Better timing margin for high-frequency address buses (>120 MHz) where setup/hold slack is constrained | Select when cycle time reduction is critical and layout supports tighter timing closure |
| SN74FCT2541ATSOCT | Same speed grade (4.8 ns), tape-and-reel packaging (2000 pcs), identical SOIC-20 footprint and function | Preferred for automated SMT production requiring reel-fed placement rather than tube handling | Choose for volume manufacturing with pick-and-place machines; no design or layout changes needed |
Compared with CY74FCT2541ATSOC, the CY74FCT2541CTSOC offers faster timing for bandwidth-constrained buses, while SN74FCT2541ATSOCT provides identical performance in tape-and-reel format-both retain full pin, function, and thermal compatibility for drop-in substitution in industrial control and instrumentation designs.
Availability
CY74FCT2541ATSOC is available at Aetrix Electronics and suitable for industrial automation, test equipment, and legacy system upgrades requiring stable component supply, long-lifecycle assurance, and RoHS-compliant 5-V logic interfacing.
Supply support for CY74FCT2541ATSOC 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 delivering analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The CY74FCT2541ATSOC belongs to TI's FCT logic family-designed specifically for noise-immune, high-drive 5-V digital interfacing in mission-critical industrial and telecom infrastructure.
FAQ
What is the maximum operating temperature range for CY74FCT2541ATSOC?
The CY74FCT2541ATSOC is rated for continuous operation from –40°C to +85°C ambient temperature. This range is validated per TI's recommended operating conditions and supported by thermal impedance data (58°C/W for SOIC package), making it suitable for enclosed industrial enclosures and base station equipment without forced airflow.
Does CY74FCT2541ATSOC support hot-swap or partial-power-down operation?
Yes, CY74FCT2541ATSOC includes Ioff circuitry that disables outputs and limits reverse current to ±1 µA when VCC = 0 V. This enables safe insertion into live backplanes and mixed-voltage systems where subsystems power up/down asynchronously-critical for modular PLC and server management applications.
How does the 25-Ω output series resistance in CY74FCT2541ATSOC improve signal integrity?
The integrated 20–40 Ω (typ 25 Ω) series resistance in CY74FCT2541ATSOC dampens transmission-line reflections on PCB traces longer than ~10 cm at 25+ MHz. This eliminates need for external series resistors, reduces EMI, and maintains monotonic edges-verified by TI's edge-rate control circuitry and 4.8 ns propagation delay spec.
Can CY74FCT2541ATSOC directly interface with both TTL and CMOS logic families?
Yes, CY74FCT2541ATSOC accepts TTL input levels (VIH ≥ 2 V, VIL ≤ 0.8 V) and delivers CMOS-compatible outputs (VOH ≥ 2.4 V at –15 mA, VOL ≤ 0.55 V at 12 mA). Its 3.3 V typical VOH provides enhanced noise margin against 3.3-V receivers while retaining full 5-V drive strength for legacy TTL loads.
What is the pin configuration and package type of CY74FCT2541ATSOC?
CY74FCT2541ATSOC uses a 20-pin SOIC (DW) package with 1.27 mm pitch, 7.5 mm × 12.8 mm body, and JEDEC MS-013 outline. Pin 1 is marked by a notch or dot; pins 1–10 are top row left-to-right, pins 11–20 bottom row right-to-left-matching standard SOIC-20 land patterns and stencil designs published by TI.
CY74FCT2541ATSOC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74FCT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- 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
CY74FCT2541ATSOC FAQ
1.How can I place an order for CY74FCT2541ATSOC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT2541ATSOC 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 CY74FCT2541ATSOC reliable?
The price and inventory of CY74FCT2541ATSOC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT2541ATSOC is usually 5 days.
3.What payment methods are accepted for CY74FCT2541ATSOC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT2541ATSOC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT2541ATSOC?
CY74FCT2541ATSOC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT2541ATSOC 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 CY74FCT2541ATSOC?
For technical support, including CY74FCT2541ATSOC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT2541ATSOC requirements.
6.How does Aetrix verify that CY74FCT2541ATSOC is sourced from the original manufacturer or authorized distributors?
All CY74FCT2541ATSOC 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 CY74FCT2541ATSOC meets industry standards.
7.What is the process for return or replacement of CY74FCT2541ATSOC?
All CY74FCT2541ATSOC units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT2541ATSOC, 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 CY74FCT2541ATSOC part is unused and in its original packaging.
Return procedure for CY74FCT2541ATSOC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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