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Texas Instruments CY74FCT574CTSOCT
- Part No.:
- CY74FCT574CTSOCT
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CY74FCT574CTSOCT.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,552
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Product details
Overview
CY74FCT574CTSOCT from Texas Instruments is a high-speed, low-power 8-bit edge-triggered D-type flip-flop register with 3-state outputs, designed for bus-oriented digital systems. It features a common buffered clock (CP), output-enable (OE) control, 5.2 ns maximum propagation delay, ±32 mA output drive capability, and Ioff support for partial-power-down operation in mixed-voltage environments.
For engineers reviewing the CY74FCT574CTSOCT datasheet, CY74FCT574CTSOCT pinout, CY74FCT574CTSOCT application, or CY74FCT574CTSOCT equivalent, key selection criteria include its 3-state bus interface capability, TTL-compatible input thresholds, 5 V supply operation, flow-through pinout for simplified PCB routing, and industrial temperature range (–40°C to 85°C).
Technical Context
The CY74FCT574CTSOCT implements eight independent D-type latches triggered on the low-to-high transition of CP, with synchronous data capture meeting 2 ns setup and 1.5 ns hold time requirements. Its 3-state outputs are controlled by an active-low OE signal, enabling bidirectional bus sharing without contention.
It integrates edge-rate control circuitry to reduce switching noise and ESD protection exceeding JESD22-A114-A (2000-V HBM), while Ioff functionality disables outputs when VCC = 0 V, preventing backflow current during power sequencing - critical for hot-swap and multi-rail system designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay (tPLH/tPHL) | 5.2 ns max - ensures tight timing margins in 100+ MHz synchronous bus interfaces |
| Output Drive (IOL/IOH) | 64 mA sink / 32 mA source - drives heavy capacitive loads or multiple TTL inputs directly |
| Supply Voltage (VCC) | 4.75 V to 5.25 V - tightly regulated 5 V operation compatible with legacy TTL and FCT logic families |
| Input Thresholds (VIH/VIL) | 2.0 V min / 0.8 V max - fully interoperable with standard TTL voltage levels |
| Ioff Current | ±1 µA at VCC = 0 V - enables safe isolation during partial power-down without external isolation circuitry |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control and communications equipment |
| Package | SOIC-20 (SO) - surface-mount, JEDEC-standard 0.300" wide body with 1.27 mm pitch |
Pinout & Package
CY74FCT574CTSOCT is housed in a 20-pin SOIC (SO) package per JEDEC MS-013, with 1.27 mm lead pitch and 0.300" body width. Thermal resistance θJA = 58°C/W supports reliable operation at full drive under continuous load.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | D0–D7 Data Inputs | Asynchronous parallel data inputs to each D-type latch; sampled on rising CP edge |
| 9 | GND | Ground reference for all internal logic and output drivers |
| 10 | VCC | 5 V power supply; must be decoupled locally to suppress switching noise |
| 11–18 | O0–O7 Outputs | 3-state buffered outputs; high-impedance when OE = high |
| 19 | CP | Buffered clock input; edge-triggered rising-edge capture with 2 ns setup/1.5 ns hold |
| 20 | OE | Active-low output enable; controls all eight outputs simultaneously |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pinout | Input pins (D0–D7) on left side, outputs (O0–O7) on right side - eliminates layer jumps and reduces trace length in dense bus layouts |
| Edge-rate control | Controlled slew rate minimizes simultaneous switching noise (SSN), easing EMC compliance in high-density digital systems |
| TTL-compatible I/O | Accepts and drives standard TTL logic levels - enables seamless integration into mixed-logic-family backplanes and control cards |
| Partial-power-down support | Ioff circuitry actively disables outputs at VCC = 0 V - eliminates need for external bus switches in hot-plug applications |
| ESD robustness | 2000-V HBM rating - exceeds industrial immunity requirements and improves board-level reliability during handling and assembly |
Applications
| Industrial PLC I/O Module | Legacy Bus Interface Adapter |
|---|---|
Use Scenario: Latching sensor status or actuator commands across a 5 V parallel control bus in programmable logic controller racks. IC Role / Device Role / Timing Role: 8-bit registered data buffer synchronizing asynchronous field signals to the PLC's master clock domain. Use Value: 5.2 ns propagation delay and 2 ns setup time ensure deterministic sampling at >100 MHz bus rates, while 3-state outputs prevent bus contention during read-modify-write cycles. | Use Scenario: Bridging ISA or VMEbus peripherals to modern microcontroller-based host controllers using 5 V logic. IC Role / Device Role / Timing Role: Bidirectional data register providing direction-controlled, clock-synchronized handshaking between legacy and new subsystems. Use Value: Flow-through pinout simplifies adapter PCB layout; Ioff allows safe insertion/removal while host remains powered; TTL compatibility eliminates level-shifter components. |
| Test Equipment Digital Pattern Generator | Automated Test Fixture Controller |
Use Scenario: Holding stimulus patterns for semiconductor ATE channel drivers before parallel output to DUT pins. IC Role / Device Role / Timing Role: High-drive 8-bit latch buffering pattern data from FPGA or ASIC, gated by test sequencer clock and enable. Use Value: ±32 mA output drive sustains fast edge rates into 50 pF loads; matched rise/fall times minimize timing skew across all 8 bits. | Use Scenario: Controlling solenoid valves, relays, and indicator LEDs in production-line functional testers operating at ambient temperatures up to 85°C. IC Role / Device Role / Timing Role: Industrial-grade output register isolating MCU GPIOs from noisy inductive loads via 3-state bus buffering. Use Value: –40°C to +85°C rating ensures reliability in factory-floor environments; 64 mA sink capability directly drives 24 V/100 mA relay coils through external transistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit registered bus interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT574ATSOCT | 6.5 ns max propagation delay; lower drive (±15 mA); same pinout and voltage specs | Suitable for cost-sensitive, lower-speed control paths where 5.2 ns timing is not required | Select when reduced power consumption and relaxed timing margins are acceptable |
| SN74FCT574CTSOCT | Identical electrical specs and pinout; Texas Instruments rebranded part number for same silicon | No functional difference; used interchangeably in TI-designated BOMs | Valid drop-in replacement with identical qualification and sourcing history |
Compared with CY74FCT574ATSOCT, the CY74FCT574CTSOCT delivers faster timing and higher drive strength for demanding bus applications; versus SN74FCT574CTSOCT, it is functionally identical but reflects Cypress Semiconductor's original product lineage prior to TI acquisition - both share full datasheet equivalence and second-source availability.
Availability
CY74FCT574CTSOCT is available at Aetrix Electronics and suitable for industrial control systems, legacy bus adapters, automated test equipment, and embedded instrumentation requiring stable component supply and long-term lifecycle support.
Supply support for CY74FCT574CTSOCT 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 with emphasis on reliability, longevity, and industrial-grade qualification.
The CY74FCT574CTSOCT belongs to the FCT logic family - engineered for high-speed, low-noise 5 V digital interfacing in mission-critical industrial, test, and communications infrastructure.
FAQ
What is the maximum clock frequency supported by CY74FCT574CTSOCT?
CY74FCT574CTSOCT supports typical switching rates up to 250 MHz, with guaranteed timing performance validated down to 5.2 ns propagation delay and 2 ns setup time. Its maximum usable clock frequency depends on system-level timing margins, including board trace delays and load capacitance, but reliably operates above 100 MHz in well-designed 5 V bus architectures using CY74FCT574CTSOCT.
Does CY74FCT574CTSOCT support mixed-voltage operation with 3.3 V logic?
CY74FCT574CTSOCT is specified for 4.75 V to 5.25 V VCC only and does not support direct 3.3 V supply operation. However, its TTL-compatible inputs accept 3.3 V logic-high signals (VIH ≥ 2.0 V), and outputs swing rail-to-rail at 5 V - level translation is required for bidirectional interfacing with 3.3 V systems. CY74FCT574CTSOCT must be powered from a clean 5 V rail.
Can CY74FCT574CTSOCT be used in hot-swap applications?
Yes - CY74FCT574CTSOCT includes Ioff circuitry that disables outputs when VCC = 0 V, preventing damaging current backflow during live insertion or removal. This makes CY74FCT574CTSOCT suitable for hot-swap backplane modules and modular I/O systems where partial power-down sequences occur, provided OE is held inactive during power transitions.
What is the meaning of "flow-through pinout" for CY74FCT574CTSOCT?
The flow-through pinout of CY74FCT574CTSOCT places all eight data inputs (D0–D7) on the left side (pins 1–8) and all eight outputs (O0–O7) on the right side (pins 11–18), with CP and OE positioned at opposite ends. This arrangement enables straight-line PCB routing across the device, minimizing vias and crosstalk - a key advantage over traditional "folded" layouts in high-density bus designs using CY74FCT574CTSOCT.
Is CY74FCT574CTSOCT RoHS compliant and lead-free?
Yes - CY74FCT574CTSOCT is RoHS compliant and features NiPdAu (NIPDAU) lead finish. Per TI's packaging documentation, it carries MSL Level-1 (unlimited floor life) for SOIC packages and is rated for peak reflow at 260°C. Full compliance documentation, including material declarations and test reports, is available through TI's official product page for CY74FCT574CTSOCT.
CY74FCT574CTSOCT 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
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- -
- Max Propagation Delay @ V, Max CL:
- 5.2ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 4.75V ~ 5.25V
- Current - Quiescent (Iq):
- 200 µA
- Input Capacitance:
- 5 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
CY74FCT574CTSOCT FAQ
1.How can I place an order for CY74FCT574CTSOCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT574CTSOCT 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 CY74FCT574CTSOCT reliable?
The price and inventory of CY74FCT574CTSOCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT574CTSOCT is usually 5 days.
3.What payment methods are accepted for CY74FCT574CTSOCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT574CTSOCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT574CTSOCT?
CY74FCT574CTSOCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT574CTSOCT 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 CY74FCT574CTSOCT?
For technical support, including CY74FCT574CTSOCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT574CTSOCT requirements.
6.How does Aetrix verify that CY74FCT574CTSOCT is sourced from the original manufacturer or authorized distributors?
All CY74FCT574CTSOCT 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 CY74FCT574CTSOCT meets industry standards.
7.What is the process for return or replacement of CY74FCT574CTSOCT?
All CY74FCT574CTSOCT units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT574CTSOCT, 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 CY74FCT574CTSOCT part is unused and in its original packaging.
Return procedure for CY74FCT574CTSOCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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