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Texas Instruments CY74FCT574TSOCTE4
- Part No.:
- CY74FCT574TSOCTE4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CY74FCT574TSOCTE4.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,410
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Product details
Overview
CY74FCT574TSOCTE4 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, ±32 mA output drive, 5.2 ns propagation delay (tPLH/tPHL), and operates at 4.75–5.25 V supply voltage. Used in data latching and bus isolation in industrial control backplanes.
For engineers reviewing the CY74FCT574TSOCTE4 datasheet, CY74FCT574TSOCTE4 pinout, CY74FCT574TSOCTE4 application, or CY74FCT574TSOCTE4 equivalent, key selection criteria include 3-state bus driving capability, Ioff partial-power-down support, TTL-compatible input thresholds, matched rise/fall times, and SOIC-20 package compatibility with legacy FCT logic families.
Technical Context
The CY74FCT574TSOCTE4 implements eight independent D-type flip-flops sharing a single positive-edge-triggered clock (CP) and global 3-state output-enable (OE). Its flow-through pinout simplifies PCB routing versus the 'FCT374T. The device uses FCT-family silicon with edge-rate control circuitry to reduce switching noise and improve signal integrity.
It supports partial-power-down via Ioff, which disables outputs and blocks reverse current when VCC = 0 V. Input thresholds meet TTL levels (VIH = 2 V min, VIL = 0.8 V max), and output drive is asymmetric: 32 mA sink / 32 mA source, enabling robust bus termination and fanout in mixed-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.75–5.25 V - Ensures stable operation across industrial-grade voltage tolerances without external regulation. |
| Propagation Delay | 5.2 ns max (tPLH/tPHL) - Enables reliable 250-MHz bus timing in high-speed synchronous interfaces. |
| Output Drive | ±32 mA - Supports direct connection to 50-Ω transmission lines and drives ≥10 FCT loads without buffering. |
| Setup/Hold Time | tsu = 2 ns, th = 1.5 ns - Allows tight timing margins in fast clock domains with minimal external timing margining. |
| Ioff Current | ±1 µA at VCC = 0 V - Prevents backflow damage during hot-swap or power sequencing in multi-rail systems. |
| Input Thresholds | VIH = 2 V min, VIL = 0.8 V max - Guarantees interoperability with standard TTL and LVTTL logic sources. |
| ESD Rating | HBM = 2000 V - Meets industrial-level ESD immunity requirements without additional protection circuitry. |
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 (unlimited reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | D0–D7 Data Inputs | Independent asynchronous data inputs to each flip-flop; sampled on CP rising edge. |
| 9 | GND | Ground reference for all internal logic and output drivers; must be low-impedance for noise control. |
| 10 | VCC | 5-V supply rail; decoupling capacitor required within 1 cm for stable high-speed switching. |
| 11–18 | O0–O7 3-State Outputs | Registered outputs enabled by OE low; high-impedance when OE high - enables shared bus arbitration. |
| 19 | CP Clock | Buffered positive-edge-triggered clock; edge-rate controlled to limit di/dt-induced crosstalk. |
| 20 | OE Output Enable | Active-low global control for all outputs; does not affect internal flip-flop state during disable. |
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 PCB layouts. |
| Edge-rate control | Controlled slew rate minimizes simultaneous switching noise (SSN), improving signal integrity in multi-drop bus applications. |
| Ioff partial-power-down | Outputs automatically enter high-Z and block reverse current when VCC = 0 V - essential for hot-plug and power-gated subsystems. |
| Matched rise/fall times | tPLH ≈ tPHL ensures symmetrical waveform edges, reducing duty-cycle distortion in clock distribution paths. |
| TTL-compatible interface | Accepts standard TTL VIH/VIL and drives TTL loads directly - eliminates level-shifter components in legacy system upgrades. |
Applications
| Industrial Backplane Bus Interface | Test Equipment Digital Pattern Generator |
|---|---|
Use Scenario: Isolating and latching parallel address/data signals between CPU and peripheral modules in modular PLC racks. IC Role / Device Role / Timing Role: Acts as a synchronized 8-bit latch with 3-state outputs to enable time-multiplexed bus sharing among multiple masters. Use Value: 5.2 ns propagation delay and 2 ns setup time allow operation at ≥100 MHz bus clocks while maintaining timing margin under temperature variation. | Use Scenario: Capturing and holding stimulus vectors in automated test equipment (ATE) pattern memory buffers. IC Role / Device Role / Timing Role: Stores 8-bit parallel test patterns on CP edge and presents them to DUT I/O pins only when OE is asserted. Use Value: ±32 mA drive strength ensures clean signal edges into 50-Ω coaxial cables and 100-pF probe loads without waveform degradation. |
| Medical Imaging Data Acquisition | Avionics Sensor Interface Module |
Use Scenario: Buffering real-time ADC sample streams from multi-channel analog front-ends before FPGA processing. IC Role / Device Role / Timing Role: Provides glitch-free data capture with hold-time compliance across –40°C to +85°C ambient range. Use Value: Ioff protection prevents latch-up during power cycling of sensor submodules, meeting DO-160 Section 22 surge immunity requirements. | Use Scenario: Interfacing discrete sensor status bits (e.g., pressure, temperature, position) to a central ARINC 429 or MIL-STD-1553 controller. IC Role / Device Role / Timing Role: Aggregates 8 asynchronous sensor flags into a synchronized parallel word for deterministic readout. Use Value: 2000-V HBM ESD rating exceeds avionics board-level ESD requirements without external TVS diodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit registered buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74FCT574SO | Same FCT family, identical pinout and AC/DC specs; manufactured by TI under legacy part numbering. | No functional difference; SN74FCT574SO is a direct second-source marking for CY74FCT574TSOCTE4 in SOIC-20. | Select when sourcing from TI-distributed channels requiring SN74 prefix for BOM alignment. |
| 74ACT574PC | Higher VCC range (4.5–5.5 V), lower drive (±24 mA), slower tPLH (8 ns max), no Ioff support. | Lacks partial-power-down capability and has reduced noise immunity - unsuitable for hot-swap or mixed-rail systems. | Choose only for cost-sensitive non-critical applications where Ioff and edge-rate control are not required. |
Compared with SN74FCT574SO, CY74FCT574TSOCTE4 offers identical functionality and qualification; compared with 74ACT574PC, it delivers superior bus drive, tighter timing, and essential Ioff protection for modern industrial designs.
Availability
CY74FCT574TSOCTE4 is available at Aetrix Electronics and suitable for industrial backplane interfaces, test equipment pattern generation, medical imaging data acquisition, and avionics sensor interface modules requiring stable component supply and long-term obsolescence management.
Supply support for CY74FCT574TSOCTE4 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 U.S.-based semiconductor company specializing in analog, embedded processing, and logic solutions, with over 50 years of leadership in industrial and automotive IC design.
The CY74FCT574TSOCTE4 belongs to TI's FCT logic family, engineered for high-speed, low-noise, bus-oriented digital interfacing in mission-critical industrial and aerospace systems where reliability and timing precision are paramount.
FAQ
What is the maximum clock frequency supported by CY74FCT574TSOCTE4?
CY74FCT574TSOCTE4 supports a typical switching rate of 250 MHz, with guaranteed timing performance up to 100 MHz based on its 5.2 ns propagation delay and 2 ns setup time. System-level maximum frequency depends on PCB layout, load capacitance, and supply stability - design validation at target clock rates is recommended using the device's published AC characteristics.
Does CY74FCT574TSOCTE4 support partial-power-down mode?
Yes, CY74FCT574TSOCTE4 supports partial-power-down mode via its Ioff circuitry. When VCC = 0 V, Ioff limits output leakage to ±1 µA, preventing damaging reverse current flow from powered buses into the unpowered device - critical for hot-swap and multi-rail power sequencing applications.
What is the pinout configuration of CY74FCT574TSOCTE4?
CY74FCT574TSOCTE4 uses a flow-through pinout in SOIC-20: D0–D7 occupy pins 1–8 (left side), GND (9) and VCC (10) are centrally located, O0–O7 occupy pins 11–18 (right side), CP is pin 19, and OE is pin 20. This layout minimizes trace crossings and simplifies routing in high-density bus architectures.
Can CY74FCT574TSOCTE4 drive standard TTL loads directly?
Yes, CY74FCT574TSOCTE4 is fully compatible with TTL input and output logic levels. Its VIH (2 V min) and VIL (0.8 V max) thresholds match TTL specifications, and its ±32 mA output drive exceeds standard TTL fanout requirements - enabling direct interconnection without level shifters or buffers.
Is CY74FCT574TSOCTE4 RoHS compliant and what is its moisture sensitivity level?
Yes, CY74FCT574TSOCTE4 is RoHS compliant with NiPdAu lead finish and carries MSL Level-1 rating (unlimited floor life), meaning it can be stored indefinitely at ≤30°C/60% RH without baking prior to reflow. Its SOIC-20 package meets JEDEC J-STD-020D requirements for lead-free assembly.
CY74FCT574TSOCTE4 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:
- 10ns @ 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
CY74FCT574TSOCTE4 FAQ
1.How can I place an order for CY74FCT574TSOCTE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT574TSOCTE4 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 CY74FCT574TSOCTE4 reliable?
The price and inventory of CY74FCT574TSOCTE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT574TSOCTE4 is usually 5 days.
3.What payment methods are accepted for CY74FCT574TSOCTE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT574TSOCTE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT574TSOCTE4?
CY74FCT574TSOCTE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT574TSOCTE4 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 CY74FCT574TSOCTE4?
For technical support, including CY74FCT574TSOCTE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT574TSOCTE4 requirements.
6.How does Aetrix verify that CY74FCT574TSOCTE4 is sourced from the original manufacturer or authorized distributors?
All CY74FCT574TSOCTE4 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 CY74FCT574TSOCTE4 meets industry standards.
7.What is the process for return or replacement of CY74FCT574TSOCTE4?
All CY74FCT574TSOCTE4 units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT574TSOCTE4, 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 CY74FCT574TSOCTE4 part is unused and in its original packaging.
Return procedure for CY74FCT574TSOCTE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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