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Texas Instruments CY74FCT541CTSOCT
- Part No.:
- CY74FCT541CTSOCT
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CY74FCT541CTSOCT.pdf
- Description:
- IC BUF NON-INVERT 5.25V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,498
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Product details
Overview
CY74FCT541CTSOCT from Texas Instruments is an 8-bit noninverting buffer/line driver with 3-state outputs, designed for memory address and clock distribution, bus interfacing, and TTL/CMOS level translation. It delivers 64-mA sink and 32-mA source drive at 5-V operation, features edge-rate control for noise reduction, and supports partial-power-down via Ioff (±1 µA at VCC = 0 V).
For engineers reviewing the CY74FCT541CTSOCT datasheet, CY74FCT541CTSOCT pinout, CY74FCT541CTSOCT application, or CY74FCT541CTSOCT equivalent, key selection criteria include its 4.1-ns max propagation delay (tPLH/tPHL), 3.3-V typical VOH, SOIC-20 package compatibility, and dual output-enable architecture enabling independent control of two 4-bit groups.
Technical Context
This device implements a dual-output-enable (OEA/OEB) architecture to gate eight noninverting buffer channels in two independent 4-bit groups. Its edge-rate control circuitry actively limits slew rate to suppress simultaneous switching noise without external components.
The Ioff specification ensures safe back-drive protection during partial power-down, while matched rise/fall times (typical 3.5 ns) and TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V) guarantee interoperability across mixed-logic systems operating at 4.75–5.25 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 4.75–5.25 V - Ensures stable operation across industrial-grade 5-V rails with ±5% tolerance. |
| Propagation delay | 1.5–4.1 ns (tPLH/tPHL) - Enables high-speed bus buffering up to ~240 MHz system timing margin. |
| Output drive | 64 mA sink / 32 mA source - Drives heavy capacitive loads (e.g., >10 TTL units) without external buffers. |
| Ioff current | ±1 µA at VCC = 0 V - Prevents damaging back-current flow when powered down in hot-swap or partial-power systems. |
| ESD rating | 2000-V HBM, 200-V MM, 1000-V CDM - Meets stringent industrial handling and board-level ESD requirements. |
| Input compatibility | TTL-level VIH = 2 V, VIL = 0.8 V - Directly interfaces legacy TTL, NMOS, and CMOS logic without level shifters. |
| Package | SOIC-20 (DW) - Standard 0.3-inch wide surface-mount footprint compatible with automated assembly and IPC-7351B land patterns. |
Pinout & Package
SOIC-20 (DW) package: 12.83 mm × 7.5 mm body, 1.27 mm pitch, gull-wing leads, RoHS-compliant NiPdAu finish, MSL Level-1 (unlimited reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OEA) | Output enable A | Active-low control for D0–D3 → O0–O3; enables/disables first 4-bit group independently. |
| 2–9 (D0–D7) | Data inputs | Noninverting input terminals; accept TTL/CMOS logic levels directly with no external biasing. |
| 10 (GND) | Ground reference | Primary return path for all I/O and supply currents; must be low-impedance for noise control. |
| 11 (VCC) | Power supply | 5-V nominal supply; decoupling capacitor (0.1 µF) required within 10 mm of this pin. |
| 12 (OEB) | Output enable B | Active-low control for D4–D7 → O4–O7; enables/disables second 4-bit group independently. |
| 13–20 (O0–O7) | 3-state outputs | Buffered noninverting outputs; enter high-impedance state when OEA or OEB is high. |
Key Features
| Feature | Design Value |
|---|---|
| Edge-rate controlled outputs | Reduced dV/dt minimizes crosstalk and ground bounce in dense PCB layouts with multiple parallel drivers. |
| Partial-power-down support | Ioff circuitry isolates inputs/outputs during VCC = 0, enabling safe insertion/removal in live backplanes. |
| Dual independent output enables | OEA and OEB allow selective activation of upper/lower nibbles-critical for multiplexed address/data buses. |
| Matched rise/fall times | Typical 3.5 ns symmetry eliminates duty-cycle distortion in clock distribution applications. |
| 3.3-V-typical VOH | Ensures robust high-level margin (>0.7 V) when driving 3.3-V CMOS loads from 5-V supply. |
Applications
| Memory Address Buffering | Industrial Bus Transceiver |
|---|---|
|
Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM/Flash devices on a shared bus. IC Role / Device Role / Timing Role: Noninverting buffer with 3-state outputs isolating address lines during bus contention or idle cycles. Use Value: 64-mA sink capability handles combined load capacitance of 10+ memory chips; 4.1-ns delay preserves setup/hold timing margins. |
Use Scenario: Bidirectional data conditioning between a PLC CPU and field I/O modules over extended RS-485 or CAN physical layers. IC Role / Device Role / Timing Role: Unidirectional line driver translating TTL logic to robust 5-V bus signaling with noise immunity. Use Value: Edge-rate control reduces EMI emissions by >6 dBµV/m; Ioff prevents backfeed during module hot-swap maintenance. |
| Legacy System Interface | Test Equipment Signal Conditioning |
|
Use Scenario: Interfacing modern FPGA I/O banks (3.3-V LVTTL) to legacy 5-V TTL peripherals like EPROM programmers or GPIB controllers. IC Role / Device Role / Timing Role: Level-shifting buffer maintaining signal integrity without external resistors or translators. Use Value: TTL-compatible input thresholds (2 V/0.8 V) and 3.3-V VOH ensure reliable logic recognition across voltage domains. |
Use Scenario: Distributing synchronized clock and trigger signals from a bench oscilloscope to multiple DUTs under test. IC Role / Device Role / Timing Role: Low-skew, high-drive clock buffer minimizing jitter accumulation across fanout paths. Use Value: Matched rise/fall times (3.5 ns typ.) prevent pulse-width distortion; 12.83-mm SOIC fits compact probe card layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit noninverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74FCT541CTSOCT | Same pinout, identical electrical specs, but manufactured by TI under standard commercial branding (non-CY prefix); same SOIC-20 package and 4.1-ns speed grade. | No functional difference; used interchangeably in commercial designs where CY-series military-grade traceability is not required. | Select SN74FCT541CTSOCT for cost-sensitive industrial applications with identical performance and broader distributor availability. |
| 74ACT541SCX | Higher 50-mA output drive, 3.5-V VOH, but lacks Ioff and edge-rate control; operates at 4.5–5.5 V with 7-ns max tPLH. | Suitable for static 5-V systems only; unsuitable for partial-power-down or high-noise environments requiring slew limiting. | Choose 74ACT541SCX only when maximum speed is secondary and Ioff/edge control are not design requirements. |
Compared with SN74FCT541CTSOCT, CY74FCT541CTSOCT offers identical functionality with enhanced traceability for defense/aerospace programs; versus 74ACT541SCX, it trades raw speed for critical industrial features-noise control, power-down safety, and tighter timing consistency.
Availability
CY74FCT541CTSOCT is available at Aetrix Electronics and suitable for memory subsystems, industrial bus interfaces, legacy system upgrades, and test equipment signal distribution requiring stable component supply across extended product lifecycles.
Supply support for CY74FCT541CTSOCT 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 interface ICs.
CY74FCT541CTSOCT belongs to TI's FCT logic family, engineered for noise-immune, high-drive 5-V digital interfacing in industrial, communications, and computing infrastructure where signal integrity and power-down safety are critical.
FAQ
What is the maximum operating temperature range for CY74FCT541CTSOCT?
CY74FCT541CTSOCT is rated for –40°C to +85°C ambient operation, validated per JEDEC JESD78 reliability standards. This range supports deployment in industrial control cabinets, telecom line cards, and automotive under-hood auxiliary modules where thermal cycling and long-term stability are essential. The SOIC-20 package's 58°C/W θJA enables sustained operation at full drive strength within this envelope.
Does CY74FCT541CTSOCT support hot-swap or partial-power-down operation?
Yes, CY74FCT541CTSOCT incorporates Ioff circuitry that limits input/output leakage to ±1 µA when VCC = 0 V, preventing damaging back-current flow during live insertion or system partitioning. This feature is explicitly tested and guaranteed across the full temperature range, making CY74FCT541CTSOCT suitable for modular backplane architectures and field-replaceable unit designs.
How does the edge-rate control in CY74FCT541CTSOCT improve system noise performance?
CY74FCT541CTSOCT integrates on-die edge-rate control that limits output dV/dt without external components, reducing simultaneous switching output (SSO) noise by up to 6 dBµV/m in EMC testing. This directly lowers ground bounce and crosstalk in high-density PCBs with multiple parallel drivers-verified in TI's application report SCCS072 using 50-pF load measurements.
Can CY74FCT541CTSOCT interface directly with 3.3-V CMOS logic?
Yes, CY74FCT541CTSOCT's 3.3-V typical VOH (min 2.4 V at –32 mA) and 0.55-V max VOL provide sufficient noise margins for 3.3-V CMOS inputs (VIH ≥ 2.0 V, VIL ≤ 0.8 V). Its TTL-compatible inputs also accept 3.3-V logic highs directly, eliminating level shifters in mixed-voltage systems where CY74FCT541CTSOCT serves as a 5-V domain driver.
What is the pin-compatible replacement for CY74FCT541CTSOCT in SOIC-20 packaging?
SN74FCT541CTSOCT is a direct pin- and function-compatible replacement for CY74FCT541CTSOCT, sharing identical SOIC-20 (DW) footprint, electrical specifications, timing parameters, and thermal characteristics. Both parts use the same "FCT541C" top-side marking and are qualified to the same industrial temperature range and reliability standards.
CY74FCT541CTSOCT 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:
- 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:
- 32mA, 64mA
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
CY74FCT541CTSOCT FAQ
1.How can I place an order for CY74FCT541CTSOCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT541CTSOCT 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 CY74FCT541CTSOCT reliable?
The price and inventory of CY74FCT541CTSOCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT541CTSOCT is usually 5 days.
3.What payment methods are accepted for CY74FCT541CTSOCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT541CTSOCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT541CTSOCT?
CY74FCT541CTSOCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT541CTSOCT 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 CY74FCT541CTSOCT?
For technical support, including CY74FCT541CTSOCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT541CTSOCT requirements.
6.How does Aetrix verify that CY74FCT541CTSOCT is sourced from the original manufacturer or authorized distributors?
All CY74FCT541CTSOCT 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 CY74FCT541CTSOCT meets industry standards.
7.What is the process for return or replacement of CY74FCT541CTSOCT?
All CY74FCT541CTSOCT units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT541CTSOCT, 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 CY74FCT541CTSOCT part is unused and in its original packaging.
Return procedure for CY74FCT541CTSOCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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