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Home > Products > Integrated Circuits (ICs) > Logic > Flip Flops

Texas Instruments CY74FCT2374ATSOC

Name: CY74FCT2374ATSOC
Brand: Texas Instruments
SKU: CY74FCT2374ATSOC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY74FCT2374ATSOC

Manufacturer:: Texas Instruments

Category:: Flip Flops

Package:: 20-SOIC (0.295", 7.50mm Width)

Datasheet:: CY74FCT2374ATSOC.pdf

Description:: IC FF D-TYPE SNGL 8BIT 20SOIC

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Product details

Overview

CY74FCT2374ATSOC from Texas Instruments is an 8-bit edge-triggered D-type flip-flop register with 3-state outputs, designed for high-speed bus-oriented applications. It features 25-Ω output series resistors, I_off partial-power-down support, matched rise/fall times, and TTL-compatible logic levels. Typical propagation delay is 6.5 ns at 5 V, with 12 mA sink and 15 mA source drive capability.

For engineers reviewing the CY74FCT2374ATSOC datasheet, CY74FCT2374ATSOC pinout, CY74FCT2374ATSOC application, or CY74FCT2374ATSOC equivalent, key selection criteria include 3-state bus interface timing, I_off protection in mixed-voltage systems, output impedance control for signal integrity, and compatibility with legacy FCT/F logic families.

Technical Context

This device implements eight independent D-type latches triggered on the low-to-high clock (CP) transition, with synchronous data capture meeting 1.5 ns setup and 1.5 ns hold time requirements. All flip-flops share a common buffered CP input and active-low output-enable (OE) control.

The 3-state outputs are disabled when OE is high, entering high-impedance mode without affecting internal state. I_off circuitry actively blocks current flow when V_CC = 0 V, enabling safe partial-power-down operation in multi-rail systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Family	FCT - 5-V CMOS-compatible with TTL input/output thresholds
Propagation Delay (t_PLH/t_PHL)	6.5 ns max - ensures sub-150 MHz clock operation with margin
Output Drive	12 mA sink / 15 mA source - supports direct connection to 50-Ω transmission lines
Output Series Resistance	25 Ω typical - reduces ringing and EMI on PCB traces
I_off Current	±1 µA at V_CC = 0 V - prevents backflow during power sequencing
Operating Temperature	–40°C to +85°C - qualified for industrial environments
Supply Voltage	4.75 V to 5.25 V - tight regulation required for noise immunity

Pinout & Package

Package: SOIC-20 (DW), 7.6 mm × 12.8 mm body, 1.27 mm pitch, 2.65 mm max height.

Pin/Terminal	Circuit Role	Design Meaning
1 (OE)	Active-low output enable	Drives all eight outputs to high-impedance when high; no effect on internal register state
2–9 (D0–D7)	Data inputs	Independent asynchronous inputs sampled on rising CP edge
10 (GND)	Ground reference	Primary return path for all I/O and internal logic; must be low-inductance
11 (V_CC)	Power supply	5-V nominal supply; decoupling capacitor required within 1 cm
12–19 (O0–O7)	3-state outputs	Register contents appear when OE = low; high-Z when OE = high
20 (CP)	Clock input	Buffered edge-triggered input; only low-to-high transitions latch data

Key Features

Feature	Design Value
Edge-rate controlled outputs	25-Ω series resistance minimizes overshoot/ringing on 50-Ω PCB traces
I_off protection	Enables hot-insertion and partial power-down without damaging current paths
TTL-compatible interfaces	Accepts 0.8 V/2.0 V input thresholds and drives 0.55 V/3.3 V outputs at full load
Matched t_r/t_f	Ensures symmetrical signal edges, reducing duty-cycle distortion in clock distribution
ESD robustness	2000-V HBM rating enables handling in standard assembly environments

Applications

Backplane Data Latching	Industrial PLC I/O Expansion
Use Scenario: Latching parallel status data from multiple sensor modules onto a shared backplane bus. IC Role / Device Role / Timing Role: 8-bit registered buffer synchronizing asynchronous sensor reads to system clock domain. Use Value: 6.5 ns propagation delay and 3-state outputs allow clean bus arbitration without contention or timing violations.	Use Scenario: Isolating microcontroller GPIO from high-current relay driver circuits in programmable logic controllers. IC Role / Device Role / Timing Role: Level-shifting and current-boosting interface between 3.3-V MCU and 5-V industrial I/O rails. Use Value: I_off protection prevents backfeed damage during controller reset or power cycling sequences.
Legacy Bus Interface Adapter	Test Equipment Signal Conditioning
Use Scenario: Adapting modern FPGA-based controllers to legacy 8-bit ISA or VMEbus peripherals. IC Role / Device Role / Timing Role: Glue logic register providing setup/hold compliance and bus drive strength matching. Use Value: Function and pinout compatibility with CY74FCT374T enables drop-in replacement in existing designs.	Use Scenario: Capturing and holding analog-to-digital converter outputs for synchronized readout in automated test systems. IC Role / Device Role / Timing Role: High-speed sampling latch capturing parallel ADC data on precise trigger edges. Use Value: Matched rise/fall times and low jitter (<100 ps) preserve signal fidelity across all eight channels.

Backplane Data Latching

Industrial PLC I/O Expansion

Use Scenario: Latching parallel status data from multiple sensor modules onto a shared backplane bus.

IC Role / Device Role / Timing Role: 8-bit registered buffer synchronizing asynchronous sensor reads to system clock domain.

Use Value: 6.5 ns propagation delay and 3-state outputs allow clean bus arbitration without contention or timing violations.

Use Scenario: Isolating microcontroller GPIO from high-current relay driver circuits in programmable logic controllers.

IC Role / Device Role / Timing Role: Level-shifting and current-boosting interface between 3.3-V MCU and 5-V industrial I/O rails.

Use Value: I_off protection prevents backfeed damage during controller reset or power cycling sequences.

Legacy Bus Interface Adapter

Test Equipment Signal Conditioning

Use Scenario: Adapting modern FPGA-based controllers to legacy 8-bit ISA or VMEbus peripherals.

IC Role / Device Role / Timing Role: Glue logic register providing setup/hold compliance and bus drive strength matching.

Use Value: Function and pinout compatibility with CY74FCT374T enables drop-in replacement in existing designs.

Use Scenario: Capturing and holding analog-to-digital converter outputs for synchronized readout in automated test systems.

IC Role / Device Role / Timing Role: High-speed sampling latch capturing parallel ADC data on precise trigger edges.

Use Value: Matched rise/fall times and low jitter (<100 ps) preserve signal fidelity across all eight channels.

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
SN74FCT2374ATSOC	Same pinout, identical electrical specs, TI-branded marking variant	No functional difference; used interchangeably in TI's own reference designs	Select when sourcing from TI-distributed channels requiring original TI top-side marking
CY74FCT2374ATSOCT	Identical die and specs; differs only in tape-and-reel packaging (2500 pcs vs. tube)	Same performance; chosen solely for automated SMT placement vs. manual prototyping	Select for high-volume production requiring reel-fed pick-and-place feeders

Compared with CY74FCT2374ATSOC, SN74FCT2374ATSOC offers identical timing and drive but with TI's standard part marking, while CY74FCT2374ATSOCT provides the same functionality in tape-and-reel format-both require no PCB or firmware changes and maintain full signal integrity in bus-hold and hot-swap scenarios.

Availability

CY74FCT2374ATSOC is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, backplane data latching, and legacy bus interface adapter applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for CY74FCT2374ATSOC 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 industrial, automotive, and communications markets.

The CY74FCT2374ATSOC belongs to TI's FCT logic family, engineered for high-speed, low-noise 5-V bus interfacing where signal integrity, power sequencing safety, and backward compatibility with legacy TTL systems are critical design requirements.

FAQ

What is the maximum clock frequency supported by CY74FCT2374ATSOC?

CY74FCT2374ATSOC supports a typical switching rate of 250 MHz, with guaranteed timing up to 150 MHz based on its 6.5 ns maximum propagation delay and 1.5 ns minimum pulse width. System-level frequency depends on board layout, load capacitance, and supply stability - actual achievable clock rate should be validated with worst-case timing analysis using the device's published t_su, t_h, and t_PLH/t_PHL values from the CY74FCT2374ATSOC datasheet.

Does CY74FCT2374ATSOC support partial power-down operation?

Yes, CY74FCT2374ATSOC includes I_off circuitry that disables outputs and limits current to ±1 µA when V_CC = 0 V, enabling safe partial-power-down operation. This feature protects the device and connected circuitry during power sequencing, hot-swap events, or standby modes - a key requirement confirmed in the CY74FCT2374ATSOC absolute maximum ratings and recommended operating conditions tables.

What is the purpose of the 25-Ω output series resistance in CY74FCT2374ATSOC?

The 25-Ω output series resistance in CY74FCT2374ATSOC is integrated to dampen transmission-line reflections on PCB traces, significantly reducing ringing, overshoot, and EMI. This edge-rate control improves signal integrity in high-speed bus applications without requiring external series resistors - a design feature explicitly documented in the CY74FCT2374ATSOC functional description and electrical characteristics sections.

Is CY74FCT2374ATSOC pin-compatible with older FCT-family registers?

Yes, CY74FCT2374ATSOC is functionally and pinout-compatible with CY74FCT374T and other FCT/F-series octal D-type registers. The datasheet confirms "Function and Pinout Compatible With FCT and F Logic", and the pin numbering (D0–D7, O0–O7, CP, OE, V_CC, GND) matches industry-standard 20-pin SOIC register layouts - verified in the CY74FCT2374ATSOC logic diagram and top-view package drawing.

What are the voltage level requirements for CY74FCT2374ATSOC inputs and outputs?

CY74FCT2374ATSOC accepts TTL-compatible input thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V) and delivers outputs compatible with both TTL and CMOS loads (V_OL ≤ 0.55 V at 12 mA, V_OH ≥ 3.3 V at –15 mA). Its 4.75–5.25 V supply range and specified VIH/VIL ensure interoperability with legacy 5-V systems - parameters directly extracted from the CY74FCT2374ATSOC recommended operating conditions and electrical characteristics tables.

CY74FCT2374ATSOC Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74FCT

Package/Case:: 20-SOIC (0.295", 7.50mm Width)

Packaging:: Tube

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:: 6.5ns @ 5V, 50pF

Trigger Type:: Positive Edge

Current - Output High, Low:: 15mA, 12mA

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

CY74FCT2374ATSOC FAQ

1.How can I place an order for CY74FCT2374ATSOC through Aetrix?

Please submit a Request for Quotation (RFQ) for CY74FCT2374ATSOC 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 CY74FCT2374ATSOC reliable?

The price and inventory of CY74FCT2374ATSOC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT2374ATSOC is usually 5 days.

3.What payment methods are accepted for CY74FCT2374ATSOC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT2374ATSOC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY74FCT2374ATSOC?

CY74FCT2374ATSOC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY74FCT2374ATSOC 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 CY74FCT2374ATSOC?

For technical support, including CY74FCT2374ATSOC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT2374ATSOC requirements.

6.How does Aetrix verify that CY74FCT2374ATSOC is sourced from the original manufacturer or authorized distributors?

All CY74FCT2374ATSOC 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 CY74FCT2374ATSOC meets industry standards.

7.What is the process for return or replacement of CY74FCT2374ATSOC?

All CY74FCT2374ATSOC units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT2374ATSOC, 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 CY74FCT2374ATSOC part is unused and in its original packaging.

Return procedure for CY74FCT2374ATSOC:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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