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Texas Instruments CY74FCT240CTSOCE4
- Part No.:
- CY74FCT240CTSOCE4
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CY74FCT240CTSOCE4.pdf
- Description:
- IC BUFFER INVERT 5.25V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,806
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Product details
Overview
CY74FCT240CTSOCE4 from Texas Instruments is an octal noninverting 3-state buffer/line driver IC used for memory address driving, clock distribution, and bus transceiver applications. It features 64-mA sink / 32-mA source output drive, 4.3-ns max propagation delay (tPLH/tPHL), Ioff partial-power-down support, and TTL-compatible input/output logic levels.
For engineers reviewing the CY74FCT240CTSOCE4 datasheet, CY74FCT240CTSOCE4 pinout, CY74FCT240CTSOCE4 application, or CY74FCT240CTSOCE4 equivalent, key selection considerations include 3-state bus isolation capability, industrial temperature range (–40°C to 85°C), SOIC-20 package compatibility, and FCT-family functional equivalence with edge-rate control for noise reduction.
Technical Context
The CY74FCT240CTSOCE4 implements dual independent 4-bit noninverting buffers, each controlled by a dedicated 3-state enable (OEA/OEB). Its output stage uses bipolar-FET hybrid (BiCMOS) technology to deliver TTL-compatible voltage levels while maintaining CMOS-like low power consumption.
Edge-rate control circuitry limits slew rate to suppress simultaneous switching noise; Ioff protection disables outputs and limits reverse current during partial power-down; matched rise/fall times ensure clean signal integrity in high-speed bus environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Octal noninverting buffer with dual 3-state enables (OEA/OEB) |
| Propagation Delay | 4.3 ns max (tPLH/tPHL at VCC = 5 V, CL = 50 pF) |
| Output Drive | 64 mA sink / 32 mA source per output - supports heavy capacitive bus loading |
| Supply Voltage | 4.75 V to 5.25 V - tight tolerance ensures stable operation across industrial rail variation |
| Ioff Support | Active at VCC = 0 V - prevents backflow current during hot-insertion or partial power-down |
| ESD Rating | 2000-V HBM - exceeds JEDEC JESD22-A114A for robust handling in manufacturing |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded systems |
Pinout & Package
CY74FCT240CTSOCE4 is housed in a 20-pin SOIC (DW) package, 7.5 mm wide, 2.65 mm max height, RoHS-compliant with NiPdAu lead finish and Level-1 MSL rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 6, 7, 8, 9 | Data inputs (DA0–DA3, DB0–DB3) | Two independent 4-bit input buses accepting TTL/CMOS/NMOS logic levels |
| 3, 18, 19, 20 | Outputs (OA0–OA3, OB0–OB3) | Noninverting buffered outputs with 3-state control - high-impedance when disabled |
| 10 | GND | Ground reference for all logic and output stages |
| 11 | VCC | 5-V supply input - powers internal logic and output drivers |
| 12, 13 | OEA, OEB | Active-low 3-state enables - independently disable OAx or OBx output groups |
Key Features
| Feature | Design Value |
|---|---|
| Edge-rate controlled outputs | Reduces simultaneous switching noise (SSN) without external termination |
| Ioff partial-power-down protection | Enables safe hot-swap and mixed-voltage system integration |
| TTL/CMOS/NMOS interoperability | Direct interface without level-shifting components - lowers BOM count |
| Matched rise/fall times | Minimizes duty-cycle distortion on clock and data signals |
| High noise immunity | 0.2-V input hysteresis (Vhys) rejects transient coupling on shared PCB traces |
Applications
| Memory Address Buffering | Industrial Bus Transceiver |
|---|---|
Use Scenario: Driving multiplexed address lines between microcontroller and SRAM/Flash in programmable logic controllers. IC Role / Device Role / Timing Role: Noninverting buffer isolating MCU address bus from memory load; 3-state enables allow shared bus arbitration. Use Value: 64-mA sink drive maintains signal integrity across 100+ pF trace capacitance; 4.3-ns delay preserves setup/hold timing margins. |
Use Scenario: Bidirectional data buffering between FPGA and legacy parallel peripheral (e.g., ADC/DAC or display controller). IC Role / Device Role / Timing Role: Dual 4-bit bus driver with independent OEA/OEB controls enabling direction-selectable data flow. Use Value: TTL-compatible I/O eliminates level translators; Ioff prevents backfeed during FPGA configuration reset. |
| Clock Distribution Network | Test Equipment Signal Conditioning |
Use Scenario: Fan-out of system clock to multiple synchronous peripherals (e.g., UARTs, timers) in factory automation hardware. IC Role / Device Role / Timing Role: Low-skew, noninverting clock driver with matched tPLH/tPHL ensuring deterministic phase alignment. Use Value: Matched rise/fall times (<1 ns skew) prevent duty-cycle degradation; edge-rate control suppresses EMI in dense mixed-signal layouts. |
Use Scenario: Signal conditioning and isolation of digital control lines (e.g., trigger, gate, sync) in automated test equipment racks. IC Role / Device Role / Timing Role: 3-state-enabled buffer providing on-demand signal routing and fault containment. Use Value: 2000-V HBM ESD rating withstands repeated probe contact; industrial temp range ensures reliability in uncontrolled lab environments. |
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 |
|---|---|---|---|
| SN74FCT240CTSO | Same FCT family, identical pinout and AC/DC specs; TI rebranded part number with identical DW package and marking "FCT240C" | No functional difference - direct second-source for supply chain diversification | Select when requiring TI-authorized alternate sourcing without design change |
| 74ACT240SCX | Higher VCC range (4.5–5.5 V); 12-mA source / 24-mA sink; no Ioff; 7.5-ns max delay | Lacks partial-power-down support; less drive strength; unsuitable for hot-swap or mixed-rail systems | Choose only for cost-sensitive, non-industrial designs where Ioff and 64-mA sink are not required |
Compared with SN74FCT240CTSO, CY74FCT240CTSOCE4 offers identical functionality and footprint but differs in packaging suffix (E4 denotes tape-and-reel per TI's legacy ordering code); versus 74ACT240SCX, it delivers superior drive, noise control, and power-down safety at the cost of slightly higher static current.
Availability
CY74FCT240CTSOCE4 is available at Aetrix Electronics and suitable for industrial control systems, test instrumentation, and embedded memory subsystems requiring stable component supply, long-term lifecycle support, and RoHS-compliant SOIC packaging.
Supply support for CY74FCT240CTSOCE4 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 logic families including FCT, ACT, and LVC.
CY74FCT240CTSOCE4 belongs to the 74FCT series - engineered for industrial and military-grade applications demanding robust noise immunity, precise timing, and fail-safe power-down behavior in mission-critical systems.
FAQ
What is the maximum operating temperature range for CY74FCT240CTSOCE4?
CY74FCT240CTSOCE4 is rated for industrial operation from –40°C to +85°C. This range is validated per TI's recommended operating conditions and supported by thermal characterization (θJA = 58°C/W for SOIC package), making it suitable for enclosed industrial enclosures without forced airflow.
Does CY74FCT240CTSOCE4 support partial power-down mode?
Yes, CY74FCT240CTSOCE4 includes Ioff circuitry that actively disables outputs and limits reverse current to ±1 µA when VCC = 0 V. This feature enables safe use in hot-swap backplanes and mixed-voltage systems where other rails remain active while the 5-V domain is powered down.
What is the output drive capability of CY74FCT240CTSOCE4?
CY74FCT240CTSOCE4 provides 64-mA sink current and 32-mA source current per output under typical conditions (VCC = 4.75 V to 5.25 V). This drive strength allows reliable interfacing with heavily loaded buses, including legacy TTL loads and long PCB traces up to 100 pF.
Is CY74FCT240CTSOCE4 pin-compatible with older FCT-series buffers?
Yes, CY74FCT240CTSOCE4 is functionally and pinout-compatible with CY74FCT240T, CY74FCT240AT, and CY74FCT240CT variants in the same SOIC-20 package. All share identical pin assignments, logic diagram, and DC/AC specifications - only speed grade and drive strength differ across the family.
What package type and dimensions does CY74FCT240CTSOCE4 use?
CY74FCT240CTSOCE4 uses a 20-pin SOIC (DW) package measuring 12.8 mm × 7.5 mm × 2.65 mm max height. It complies with JEDEC MS-013, features NiPdAu lead finish, and carries a Level-1 MSL rating - allowing unlimited floor life and reflow at 260°C peak without dry-pack requirements.
CY74FCT240CTSOCE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74FCT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 4
- 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
CY74FCT240CTSOCE4 FAQ
1.How can I place an order for CY74FCT240CTSOCE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT240CTSOCE4 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 CY74FCT240CTSOCE4 reliable?
The price and inventory of CY74FCT240CTSOCE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT240CTSOCE4 is usually 5 days.
3.What payment methods are accepted for CY74FCT240CTSOCE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT240CTSOCE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT240CTSOCE4?
CY74FCT240CTSOCE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT240CTSOCE4 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 CY74FCT240CTSOCE4?
For technical support, including CY74FCT240CTSOCE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT240CTSOCE4 requirements.
6.How does Aetrix verify that CY74FCT240CTSOCE4 is sourced from the original manufacturer or authorized distributors?
All CY74FCT240CTSOCE4 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 CY74FCT240CTSOCE4 meets industry standards.
7.What is the process for return or replacement of CY74FCT240CTSOCE4?
All CY74FCT240CTSOCE4 units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT240CTSOCE4, 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 CY74FCT240CTSOCE4 part is unused and in its original packaging.
Return procedure for CY74FCT240CTSOCE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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