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Texas Instruments CY74FCT374CTSOCTE4
- Part No.:
- CY74FCT374CTSOCTE4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CY74FCT374CTSOCTE4.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,195
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Product details
Overview
CY74FCT374CTSOCTE4 from Texas Instruments is an 8-bit edge-triggered D-type flip-flop register with 3-state outputs, designed for bus-oriented digital systems. It features a buffered clock (CP), common output-enable (OE), 5.2 ns maximum propagation delay, 64 mA sink / 32 mA source drive strength, and Ioff support for partial-power-down operation. It is used in data latching, bus buffering, and address/data isolation in industrial control and embedded computing.
For engineers reviewing the CY74FCT374CTSOCTE4 datasheet, CY74FCT374CTSOCTE4 pinout, CY74FCT374CTSOCTE4 application, or CY74FCT374CTSOCTE4 equivalent, key selection criteria include 3-state bus interface capability, TTL-compatible input thresholds, 5 V supply operation, and SOIC-20 package compatibility with legacy board layouts.
Technical Context
The CY74FCT374CTSOCTE4 implements eight independent D-type flip-flops sharing a single positive-edge-triggered clock (CP) and a common active-low output-enable (OE). Its output drivers are fully 3-state capable, enabling bidirectional bus arbitration without external logic.
It integrates edge-rate control circuitry to reduce switching noise, supports Ioff protection during power-down states, and maintains matched rise/fall times for clean signal integrity. Input thresholds comply with TTL levels (VIL = 0.8 V, VIH = 2.0 V), and output voltage swing is specified at VOH ≥ 2.4 V (IOL = 64 mA) and VOL ≤ 0.55 V (IOL = 64 mA) under 4.75–5.25 V operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | 8-bit positive-edge-triggered D-type register with 3-state outputs |
| Propagation Delay (tPLH/tPHL) | 5.2 ns max - enables reliable 192 MHz bus operation with setup/hold margin |
| Output Drive Strength | 64 mA sink / 32 mA source - drives heavy capacitive loads and multiple TTL inputs |
| Supply Voltage Range | 4.75 V to 5.25 V - tight tolerance ensures stable timing across industrial temperature range |
| Ioff Support | Active at VCC = 0 V - prevents backflow current during hot-swap or partial-power-down |
| ESD Protection | 2000-V HBM, 200-V MM, 1000-V CDM - meets MIL-STD-883 Class 3001 requirements |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded 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 (OE) | Output Enable (active low) | Controls all 8 outputs simultaneously; high = high-impedance state, low = registered data driven |
| 2–9 (D0–D7) | Data inputs | Independent D-type inputs for each flip-flop; sampled on rising CP edge |
| 10 (GND) | Ground reference | Primary return path for logic and output currents; decoupling required within 10 mm |
| 11 (VCC) | Power supply | +5 V nominal supply; requires local 0.1 µF ceramic bypass capacitor |
| 12–19 (O0–O7) | 3-state outputs | Registered outputs; high-impedance when OE = high, otherwise reflect Q-state of corresponding D input |
| 20 (CP) | Clock input | Buffered positive-edge-triggered clock; accepts TTL-level transitions; 2 ns min pulse width |
Key Features
| Feature | Design Value |
|---|---|
| Edge-rate controlled outputs | Reduces simultaneous switching noise (SSN) by limiting dV/dt, improving signal integrity on shared buses |
| Ioff partial-power-down protection | Disables output buffers at VCC = 0 V, preventing damaging back-current during system power sequencing |
| TTL-compatible input thresholds | VIL = 0.8 V / VIH = 2.0 V - interoperates directly with legacy 74LS/74ALS logic without level shifters |
| Matched rise/fall times | tPLH ≈ tPHL - minimizes duty cycle distortion in clock distribution and data capture paths |
| 250-MHz typical switching rate | Validated at system level under load; supports high-throughput data transfer in burst-mode interfaces |
Applications
| Industrial PLC I/O Expansion | Legacy Bus Interface Adapter |
|---|---|
Use Scenario: Isolating microcontroller GPIOs from noisy 24 V industrial fieldbus segments using optocoupled level-shifting and local 5 V bus buffering. IC Role / Device Role / Timing Role: CY74FCT374CTSOCTE4 acts as a synchronized latch between MCU parallel port and isolated bus transceivers, capturing data on CP edge while OE gates output to bus only during valid cycles. Use Value: Enables deterministic sampling of sensor/actuator data with 2 ns setup/1.5 ns hold margin and 5.2 ns propagation, reducing metastability risk in real-time control loops. |
Use Scenario: Bridging modern ARM-based controllers to legacy ISA or VMEbus peripherals requiring 8-bit wide, 3-state data/address latching. IC Role / Device Role / Timing Role: CY74FCT374CTSOCTE4 serves as a bi-directional data register, holding CPU writes until bus grant, then driving data onto the shared bus under OE control. Use Value: Provides 64 mA drive per line to meet VME spec loading requirements while maintaining TTL-compatible voltage levels and noise-immune edge-rate control. |
| Test Equipment Digital Pattern Generator | Automated Test Fixture Data Capture |
Use Scenario: Generating precise, synchronized 8-bit stimulus patterns for IC functional testing using FPGA-controlled clock and enable signals. IC Role / Device Role / Timing Role: CY74FCT374CTSOCTE4 stores pattern words from FPGA memory and presents them on CP edge; OE enables output only during test vector assertion windows. Use Value: Delivers sub-6 ns timing precision and 0.55 V VOL under full 64 mA load, ensuring clean logic levels across 50 cm ribbon-cable interconnects. |
Use Scenario: Capturing parallel sensor outputs (e.g., ADC result bus) into a microcontroller's memory-mapped peripheral interface with precise timing alignment. IC Role / Device Role / Timing Role: CY74FCT374CTSOCTE4 latches asynchronous analog-to-digital conversion results on CP edge, then presents stable data to MCU via OE-gated 3-state outputs. Use Value: Eliminates bus contention during MCU read cycles and guarantees 1.5 ns hold time margin even with 5 ns clock skew across multi-board fixtures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit 3-state register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74FCT374ATSOCT | Same SOIC-20 package, but rated for –40°C to +85°C with 6.5 ns max tPD and lower drive (32 mA sink / 12 mA source) | Suitable for cost-sensitive industrial designs where 5.2 ns speed is not required and drive load is lighter | Select SN74FCT374ATSOCT if system timing budget allows >6 ns delay and output loading stays below 32 mA per line |
| 74ACT374SCX | SOIC-20, 5 V, 3-state octal D flip-flop with 8.5 ns max tPD, 24 mA drive, and CMOS input characteristics (VIH = 3.5 V) | Requires level translation when interfacing with TTL sources; better for mixed-voltage systems with 3.3 V control logic | Choose 74ACT374SCX only when interfacing with CMOS-compatible inputs and relaxed timing constraints apply |
Compared with SN74FCT374ATSOCT and 74ACT374SCX, the CY74FCT374CTSOCTE4 delivers the fastest propagation (5.2 ns), highest drive strength (64 mA), and native TTL input compatibility - making it optimal for high-speed, noise-sensitive, legacy-bus-coupled applications where timing margin and bus loading are critical.
Availability
CY74FCT374CTSOCTE4 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, legacy bus interface adapters, automated test fixture data capture, and digital pattern generation requiring stable component supply and long-term production continuity.
Supply support for CY74FCT374CTSOCTE4 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 over 50 years of innovation in high-reliability digital interface components.
The CY74FCT374CTSOCTE4 belongs to TI's FCT logic family, engineered for high-speed, low-noise, TTL-compatible bus interfacing in industrial, military, and telecom infrastructure applications.
FAQ
What is the maximum clock frequency supported by the CY74FCT374CTSOCTE4?
The CY74FCT374CTSOCTE4 has a 5.2 ns maximum propagation delay (tPLH/tPHL) and 2 ns minimum clock pulse width, supporting reliable operation up to 192 MHz in ideal conditions. Real-world maximum frequency depends on PCB layout, load capacitance, and timing margins - for sustained 100+ MHz use, ensure CP trace length matching and minimize stubs to avoid skew-induced setup violations in the CY74FCT374CTSOCTE4.
Does the CY74FCT374CTSOCTE4 support hot-swap or partial-power-down operation?
Yes, the CY74FCT374CTSOCTE4 includes Ioff circuitry that disables outputs when VCC = 0 V, preventing damaging back-current flow during hot-insertion or staged power sequencing. This feature is validated per JESD78 and allows safe operation in systems where the CY74FCT374CTSOCTE4 may be powered down while other rails remain active.
What is the recommended bypassing strategy for the CY74FCT374CTSOCTE4?
Place a 0.1 µF X7R ceramic capacitor between VCC (pin 11) and GND (pin 10) within 5 mm of the CY74FCT374CTSOCTE4 package. For systems with high switching activity across multiple devices, add a 4.7 µF tantalum or polymer capacitor per 5–10 CY74FCT374CTSOCTE4 units on the same 5 V rail to suppress low-frequency supply droop.
Can the CY74FCT374CTSOCTE4 drive standard TTL loads directly?
Yes - the CY74FCT374CTSOCTE4 is fully TTL-compatible: its input thresholds (VIH = 2.0 V, VIL = 0.8 V) match TTL logic levels, and its outputs deliver 64 mA sink / 32 mA source, exceeding the 16 mA sink requirement of standard TTL. It can directly drive up to four 74LS inputs per output without external buffers, preserving timing integrity in the CY74FCT374CTSOCTE4.
Is the CY74FCT374CTSOCTE4 pin-compatible with earlier FCT374 variants?
Yes - the CY74FCT374CTSOCTE4 uses the standard SOIC-20 (DW) footprint and identical pinout as CY74FCT374ATSOC, CY74FCT374TSOC, and CY74FCT374ATSOCT. All share identical pin assignments for D0–D7, O0–O7, CP, OE, VCC, and GND, enabling drop-in replacement in existing layouts where speed and drive upgrades are needed.
CY74FCT374CTSOCTE4 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:
- 250 MHz
- 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
CY74FCT374CTSOCTE4 FAQ
1.How can I place an order for CY74FCT374CTSOCTE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT374CTSOCTE4 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 CY74FCT374CTSOCTE4 reliable?
The price and inventory of CY74FCT374CTSOCTE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT374CTSOCTE4 is usually 5 days.
3.What payment methods are accepted for CY74FCT374CTSOCTE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT374CTSOCTE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT374CTSOCTE4?
CY74FCT374CTSOCTE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT374CTSOCTE4 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 CY74FCT374CTSOCTE4?
For technical support, including CY74FCT374CTSOCTE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT374CTSOCTE4 requirements.
6.How does Aetrix verify that CY74FCT374CTSOCTE4 is sourced from the original manufacturer or authorized distributors?
All CY74FCT374CTSOCTE4 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 CY74FCT374CTSOCTE4 meets industry standards.
7.What is the process for return or replacement of CY74FCT374CTSOCTE4?
All CY74FCT374CTSOCTE4 units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT374CTSOCTE4, 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 CY74FCT374CTSOCTE4 part is unused and in its original packaging.
Return procedure for CY74FCT374CTSOCTE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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