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Texas Instruments CY74FCT574ATSOCT
- Part No.:
- CY74FCT574ATSOCT
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CY74FCT574ATSOCT.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,793
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Product details
Overview
CY74FCT574ATSOCT from Texas Instruments is an 8-bit edge-triggered D-type flip-flop register with 3-state outputs, designed for bus-oriented data latching in industrial and embedded control systems. It features a 6.5 ns maximum propagation delay (tPLH/tPHL), ±32 mA output drive capability, Ioff partial-power-down support, and TTL-compatible input/output logic levels.
For engineers reviewing the CY74FCT574ATSOCT datasheet, CY74FCT574ATSOCT pinout, CY74FCT574ATSOCT application, or CY74FCT574ATSOCT equivalent, key selection criteria include 3-state bus interface timing, 5 V supply operation with 4.75–5.25 V range, Ioff-enabled system power sequencing, matched rise/fall times, and SOIC-20 package compatibility with legacy board layouts.
Technical Context
The CY74FCT574ATSOCT implements eight independent D-type flip-flops sharing a common buffered clock (CP) and active-low output-enable (OE) control. Its edge-rate controlled outputs reduce switching noise while maintaining TTL-level compatibility and 250-MHz typical switching rate.
It supports partial-power-down via Ioff circuitry that disables outputs when VCC = 0 V, preventing backflow current. The device operates across –40°C to +85°C and is fully characterized for 5 V ±5% supply, with setup/hold times of 2 ns and 1.5 ns respectively.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay (tPLH/tPHL) | Max 6.5 ns at VCC = 5 V - ensures tight timing margins in high-speed synchronous buses |
| Output Drive Strength | ±32 mA - supports direct interfacing with multiple TTL loads without external buffers |
| Supply Voltage Range | 4.75 V to 5.25 V - guarantees stable operation under industrial rail tolerances |
| Ioff Support | Active at VCC = 0 V - enables safe hot-insertion and multi-rail power sequencing |
| Input Compatibility | TTL-level VIH ≥ 2 V, VIL ≤ 0.8 V - interoperable with legacy 5 V logic families |
| ESD Protection | 2000-V HBM, 200-V MM, 1000-V CDM - meets robustness requirements for manufacturing and field environments |
| Operating Temperature | –40°C to +85°C - qualified for extended industrial temperature applications |
Pinout & Package
Package: SOIC-20 (DW), 7.5 mm × 12.8 mm body, 1.27 mm pitch, RoHS-compliant NIPDAU lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | D0–D7 Data Inputs | Edge-triggered D inputs sampled on low-to-high CP transition; each controls one flip-flop |
| 9 | GND | Ground reference for all internal logic and output drivers |
| 10, 20 | VCC | Primary 5 V supply; dual VCC pins reduce IR drop and improve noise immunity |
| 11–18 | O0–O7 3-State Outputs | Registered outputs placed in high-impedance state when OE = high |
| 19 | CP Clock | Buffered positive-edge-triggered clock; synchronizes all eight flip-flops |
| 20 | OE Output Enable | Active-low control enabling/disabling all O0–O7 outputs simultaneously |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pinout | Input pins (D0–D7) on left side, output pins (O0–O7) on right side - simplifies PCB routing and reduces layer count |
| Edge-rate control | Internally limited slew rate - suppresses simultaneous switching noise (SSN) in dense bus environments |
| Matched rise/fall times | Typically equal tPLH/tPHL - minimizes duty cycle distortion in clocked data paths |
| 3-state output control | OE-driven high-impedance state - enables shared-bus arbitration without external bus transceivers |
| Partial-power-down Ioff | Sub-µA leakage at VCC = 0 V - prevents backfeeding during system sleep or hot-swap events |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
Use Scenario: Latching sensor status and actuator commands across a multiplexed backplane bus. IC Role / Device Role / Timing Role: Synchronous 8-bit data register capturing parallel inputs on rising CP edge; OE enables time-multiplexed bus sharing. Use Value: 6.5 ns propagation delay and ±32 mA drive ensure reliable signal capture and fanout to multiple downstream drivers in noisy 24 V DC environments. | Use Scenario: Isolating microcontroller GPIOs from high-current door lock, mirror, and lighting drivers. IC Role / Device Role / Timing Role: Bus-interface register buffering MCU outputs before driving discrete power stages; Ioff protects MCU during battery disconnect. Use Value: Ioff support and –40°C to +85°C rating allow safe integration into vehicle power domains subject to cold cranking and thermal cycling. |
| Test Equipment Digital Pattern Generator | Legacy System Bus Extender |
Use Scenario: Generating precise, synchronized digital stimulus waveforms for DUT interface validation. IC Role / Device Role / Timing Role: Edge-triggered latch holding pattern bits until next CP edge; 3-state outputs enable dynamic bus reconfiguration. Use Value: Matched rise/fall times and 250-MHz switching rate support clean, jitter-free waveform generation up to 150 MHz clock domains. | Use Scenario: Adding additional 8-bit data latching to extend address/data bus width in aging industrial controllers. IC Role / Device Role / Timing Role: Drop-in replacement for obsolete 74F374-style registers; flow-through pinout preserves existing PCB layout. Use Value: Pin-compatible with FCT374T and TTL-level compatible - eliminates redesign while upgrading noise immunity and power sequencing capability. |
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 |
|---|---|---|---|
| CY74FCT374ATSOCT | Different pinout (input/output interleaved); identical electrical specs and timing | Requires PCB layout revision due to non-flow-through pin assignment | Select only when footprint reuse is not required and legacy design documentation references '374 form factor |
| SN74FCT574ATPWR | Same function, timing, and drive strength; TSSOP-20 package (4.4 mm × 6.5 mm) | Smaller footprint and higher density; requires requalification of thermal and mechanical mounting | Choose for space-constrained designs where SOIC-20 height or thermal resistance (58°C/W) is limiting |
Compared with CY74FCT374ATSOCT, CY74FCT574ATSOCT offers simplified routing via flow-through pinout; compared with SN74FCT574ATPWR, it provides lower thermal resistance and proven manufacturability in through-hole and SOIC assembly lines.
Availability
CY74FCT574ATSOCT is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, test equipment pattern generators, and legacy system bus extenders requiring stable component supply and long-term lifecycle assurance.
Supply support for CY74FCT574ATSOCT 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets since 1930.
CY74FCT574ATSOCT belongs to TI's FCT logic family, engineered for high-speed, low-noise 5 V bus interfacing with enhanced ESD robustness and power sequencing support in industrial control systems.
FAQ
What is the maximum clock frequency supported by CY74FCT574ATSOCT?
CY74FCT574ATSOCT is characterized for 250-MHz typical switching rate and has a minimum clock pulse width (tw) of 5 ns, supporting reliable operation up to 100 MHz in worst-case timing conditions with proper setup/hold margins. The 6.5 ns propagation delay enables use in systems with tight synchronous timing budgets.
Does CY74FCT574ATSOCT support hot-swap or partial-power-down operation?
Yes, CY74FCT574ATSOCT includes Ioff circuitry that disables outputs when VCC = 0 V, limiting Ioff leakage to ±1 µA. This feature prevents damaging current backflow during hot-swap events or multi-rail power sequencing, making CY74FCT574ATSOCT suitable for systems requiring controlled power-up/down sequences.
Is CY74FCT574ATSOCT pin-compatible with older 74F374 devices?
No, CY74FCT574ATSOCT uses a flow-through pinout (D0–D7 on left, O0–O7 on right), whereas 74F374 uses interleaved I/O. However, CY74FCT574ATSOCT is functionally and electrically compatible with 'F374 logic - only PCB layout modification is needed to adopt the improved pin arrangement and noise characteristics of CY74FCT574ATSOCT.
What are the absolute maximum ratings for CY74FCT574ATSOCT?
CY74FCT574ATSOCT has absolute maximum ratings of –0.5 V to 7 V on all supply and I/O pins, –65°C to +150°C storage temperature, and –65°C to +135°C ambient operating temperature with power applied. Exceeding these limits may cause permanent damage; recommended operating conditions specify 4.75–5.25 V VCC and –40°C to +85°C TA.
How does the edge-rate control in CY74FCT574ATSOCT improve system noise performance?
CY74FCT574ATSOCT integrates edge-rate control circuitry that limits output slew rate without degrading propagation delay. This significantly reduces simultaneous switching noise (SSN) and ground bounce in high-density bus applications, improving signal integrity and electromagnetic compatibility - especially critical in mixed-signal industrial and automotive systems where CY74FCT574ATSOCT is commonly deployed.
CY74FCT574ATSOCT 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:
- Discontinued at Digi-Key
- 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:
- 6.5ns @ 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
CY74FCT574ATSOCT FAQ
1.How can I place an order for CY74FCT574ATSOCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT574ATSOCT 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 CY74FCT574ATSOCT reliable?
The price and inventory of CY74FCT574ATSOCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT574ATSOCT is usually 5 days.
3.What payment methods are accepted for CY74FCT574ATSOCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT574ATSOCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT574ATSOCT?
CY74FCT574ATSOCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT574ATSOCT 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 CY74FCT574ATSOCT?
For technical support, including CY74FCT574ATSOCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT574ATSOCT requirements.
6.How does Aetrix verify that CY74FCT574ATSOCT is sourced from the original manufacturer or authorized distributors?
All CY74FCT574ATSOCT 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 CY74FCT574ATSOCT meets industry standards.
7.What is the process for return or replacement of CY74FCT574ATSOCT?
All CY74FCT574ATSOCT units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT574ATSOCT, 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 CY74FCT574ATSOCT part is unused and in its original packaging.
Return procedure for CY74FCT574ATSOCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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