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

Texas Instruments CY74FCT16374ATPACT

Name: CY74FCT16374ATPACT
Brand: Texas Instruments
SKU: CY74FCT16374ATPACT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY74FCT16374ATPACT

Manufacturer:: Texas Instruments

Category:: Flip Flops

Package:: 48-TFSOP (0.240", 6.10mm Width)

Datasheet:: CY74FCT16374ATPACT.pdf

Description:: IC FF D-TYPE DUAL 8BIT 48TSSOP

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Product details

Overview

CY74FCT16374ATPACT from Texas Instruments is a 16-bit edge-triggered D-type register with dual 8-bit register capability, 64 mA sink/32 mA source drive strength, 6.5 ns max propagation delay (CLK to O), and industrial temperature range (−40°C to +85°C). It serves as a high-drive buffered register for bus interface and backplane driving in high-speed digital systems.

For engineers reviewing the CY74FCT16374ATPACT datasheet, CY74FCT16374ATPACT pinout, CY74FCT16374ATPACT application, or CY74FCT16374ATPACT equivalent, key selection criteria include output drive capability (64 mA sink), Ioff partial-power-down support, flow-through pinout for PCB layout simplification, and TSSOP-48 packaging compatibility with high-density routing.

Technical Context

The CY74FCT16374ATPACT implements two independent 8-bit registers or one unified 16-bit register via shared CLK and OE inputs. Its TTL-compatible inputs and CMOS-compatible outputs operate at VCC = 5V ± 10%, with input hysteresis (100 mV) enhancing noise immunity.

Ioff circuitry disables outputs during power-down to prevent current backflow, while edge-rate control reduces system switching noise. Typical ground bounce (VOLP) is <1.0 V at VCC = 5 V and TA = 25°C, supporting robust signal integrity in noisy environments.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Supply	5 V ± 10% - compatible with standard 5-V logic rails and tolerant of supply variation in industrial systems.
Propagation Delay	2.0–6.5 ns (CLK to O) - enables reliable operation in high-speed bus timing with ≥150 MHz clock domains.
Output Drive	64 mA sink / 32 mA source - sufficient to drive high-capacitance loads (e.g., >50 pF traces) and low-impedance backplanes without external buffers.
Operating Temp	−40°C to +85°C - qualified for industrial-grade embedded control, automation, and communications equipment.
Ioff Support	Enabled - prevents damaging current flow when powered down, essential for hot-swap and partial-power-down system architectures.
Package	TSSOP-48 (DGG), 240-mil pitch - compact footprint with 0.5 mm lead pitch supports high-density PCB layouts and automated assembly.
ESD Rating	>2000 V (HBM) - provides robust handling protection during manufacturing and board-level integration.

Pinout & Package

Package: 48-pin TSSOP (DGG), 12.6 × 6.2 mm body, 0.5 mm lead pitch, 1.2 mm max height, JEDEC MO-153 compliant.

Pin/Terminal	Circuit Role	Design Meaning
1–8, 17–24, 25–32, 41–48	Data Inputs (D1–D16)	Asynchronous parallel data inputs; each pair (e.g., 1D1–1D8, 2D1–2D8) maps to one 8-bit register section.
9, 26	Clock Inputs (1CLK, 2CLK)	Positive-edge-triggered clock inputs controlling latching of respective 8-bit data sections.
10, 27	Output Enable (1OE, 2OE)	Active-low three-state control enabling/disabling corresponding 8-bit output groups independently.
11–16, 18–23, 33–38, 40–45	Outputs (1O1–1O8, 2O1–2O8)	Three-state CMOS/TTL-compatible outputs with high sink/source drive; flow-through arrangement minimizes trace crossovers.
19, 20, 39, 46	GND	Four dedicated ground pins - reduce ground bounce and improve noise margin under heavy switching.
12, 13, 34, 35	VCC	Four dedicated power pins - lower impedance supply path and stabilize voltage under dynamic load conditions.

Key Features

Feature	Design Value
Ioff partial-power-down	Prevents backflow current when VCC = 0 V, enabling safe integration into multi-rail or hot-swap systems.
Edge-rate controlled outputs	Reduces EMI and ground bounce, critical for maintaining signal integrity on dense PCBs and backplanes.
Flow-through pinout	Input-to-output signal path alignment across package edges simplifies layer routing and reduces vias.
High sink current (64 mA)	Drives heavy capacitive loads (e.g., long traces, multiple inputs) without external buffering, lowering BOM count.
Industrial temperature range	Validated operation from −40°C to +85°C ensures reliability in factory automation, test equipment, and telecom infrastructure.

Applications

Industrial Bus Interface	Backplane Driver
Use Scenario: Interfacing microcontroller GPIOs to a 16-bit parallel bus in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Acts as a registered buffer that isolates MCU I/O from bus capacitance and synchronizes data transfers on rising clock edges. Use Value: Enables deterministic timing with 6.5 ns max tPLH and supports hot-plug-safe isolation via Ioff when bus power is removed.	Use Scenario: Driving a 16-bit data bus across a 15 cm, 80 Ω impedance-controlled backplane in modular instrumentation racks. IC Role / Device Role / Timing Role: Provides high-current, low-skew (0.5 ns tSK(O)) registered output staging to maintain signal fidelity over long traces. Use Value: 64 mA sink capability ensures clean logic transitions despite 60+ pF net capacitance; flow-through pinout minimizes stub length and reflections.
Test Equipment Data Capture	Digital Signal Acquisition Module
Use Scenario: Capturing parallel digital waveforms from DUTs in automated test equipment (ATE) with precise timestamping. IC Role / Device Role / Timing Role: Latches asynchronous input data on system clock edge, providing synchronized, glitch-free sampling for downstream FPGA capture. Use Value: 2.0 ns min tSU/tH timing margins ensure setup/hold compliance even at 100+ MHz sampling rates; industrial temp rating sustains accuracy across thermal cycles.	Use Scenario: Buffering ADC output data streams in real-time signal acquisition modules used in vibration monitoring systems. IC Role / Device Role / Timing Role: Registers and drives 16-bit parallel ADC output to an FPGA interface, decoupling conversion timing from processing latency. Use Value: Low ground bounce (<1.0 V VOLP) preserves analog measurement integrity; Ioff allows safe power sequencing between ADC and FPGA domains.

Industrial Bus Interface

Backplane Driver

Use Scenario: Interfacing microcontroller GPIOs to a 16-bit parallel bus in programmable logic controllers (PLCs).

IC Role / Device Role / Timing Role: Acts as a registered buffer that isolates MCU I/O from bus capacitance and synchronizes data transfers on rising clock edges.

Use Value: Enables deterministic timing with 6.5 ns max tPLH and supports hot-plug-safe isolation via Ioff when bus power is removed.

Use Scenario: Driving a 16-bit data bus across a 15 cm, 80 Ω impedance-controlled backplane in modular instrumentation racks.

IC Role / Device Role / Timing Role: Provides high-current, low-skew (0.5 ns tSK(O)) registered output staging to maintain signal fidelity over long traces.

Use Value: 64 mA sink capability ensures clean logic transitions despite 60+ pF net capacitance; flow-through pinout minimizes stub length and reflections.

Test Equipment Data Capture

Digital Signal Acquisition Module

Use Scenario: Capturing parallel digital waveforms from DUTs in automated test equipment (ATE) with precise timestamping.

IC Role / Device Role / Timing Role: Latches asynchronous input data on system clock edge, providing synchronized, glitch-free sampling for downstream FPGA capture.

Use Value: 2.0 ns min tSU/tH timing margins ensure setup/hold compliance even at 100+ MHz sampling rates; industrial temp rating sustains accuracy across thermal cycles.

Use Scenario: Buffering ADC output data streams in real-time signal acquisition modules used in vibration monitoring systems.

IC Role / Device Role / Timing Role: Registers and drives 16-bit parallel ADC output to an FPGA interface, decoupling conversion timing from processing latency.

Use Value: Low ground bounce (<1.0 V VOLP) preserves analog measurement integrity; Ioff allows safe power sequencing between ADC and FPGA domains.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit registered buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY74FCT16374CTPACT	5.2 ns max propagation delay (vs. 6.5 ns); otherwise identical electrical specs and pinout.	Better suited for systems requiring tighter timing margins (e.g., >160 MHz clock domains).	Select when propagation delay is the dominant timing constraint and higher speed justifies potential cost premium.
CY74FCT162374ATPACT	24 mA balanced output drivers (vs. 64/32 mA asymmetrical); lower ground bounce (<0.6 V VOLP); no high-sink capability.	Optimized for transmission-line driving with termination-resistor elimination; unsuitable for high-capacitance backplanes.	Choose for point-to-point or controlled-impedance interconnects where signal integrity outweighs drive strength.

Compared with CY74FCT16374CTPACT, the CY74FCT16374ATPACT trades 1.3 ns of propagation delay for broader availability and cost efficiency; versus CY74FCT162374ATPACT, it delivers 2.7× higher sink current at the expense of higher ground bounce-making it optimal for backplane loading rather than transmission-line signaling.

Availability

CY74FCT16374ATPACT is available at Aetrix Electronics and suitable for industrial bus interface, backplane driver, and test equipment data capture applications requiring stable component supply, long-lifecycle support, and RoHS-compliant TSSOP packaging.

Supply support for CY74FCT16374ATPACT 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 for industrial, automotive, and communications markets.

The CY74FCT16374ATPACT belongs to TI's FCT logic family, designed specifically for high-speed, low-noise, 5-V bus interfacing with robust drive strength and partial-power-down capability.

FAQ

What is the maximum clock frequency supported by CY74FCT16374ATPACT?

The CY74FCT16374ATPACT does not specify a maximum clock frequency directly, but its 6.5 ns maximum propagation delay (tPLH/tPHL) and 5.0 ns minimum clock pulse width (tW) imply reliable operation up to approximately 150 MHz in well-designed systems with controlled trace lengths and proper termination. Actual usable frequency depends on board layout, load capacitance, and timing margin requirements.

Does CY74FCT16374ATPACT support hot-swap or partial-power-down operation?

Yes, CY74FCT16374ATPACT includes Ioff circuitry that disables outputs when VCC = 0 V, preventing damaging current backflow during hot-swap or partial-power-down scenarios. This feature is fully specified per JEDEC standards and enables safe integration into multi-rail systems where power domains may be sequenced independently.

What is the purpose of the four VCC and four GND pins on CY74FCT16374ATPACT?

The four VCC and four GND pins on CY74FCT16374ATPACT reduce power distribution impedance and minimize simultaneous switching noise. They provide dedicated low-inductance paths for high-current switching events, lowering ground bounce (VOLP <1.0 V) and improving signal integrity-especially critical when driving high-capacitance loads or operating at high frequencies.

Can CY74FCT16374ATPACT be used as two independent 8-bit registers?

Yes, CY74FCT16374ATPACT contains two functionally independent 8-bit register sections (1D1–1O8 and 2D1–2O8), each with dedicated clock (1CLK/2CLK) and output enable (1OE/2OE) inputs. These can be operated separately or tied together to form a single 16-bit register, offering flexible design partitioning for bus segmentation or channel isolation.

Is CY74FCT16374ATPACT pin-compatible with CY74FCT162374ATPACT?

No, CY74FCT16374ATPACT is not pin-compatible with CY74FCT162374ATPACT. Although both are 48-pin TSSOP devices with identical pin count and package outline (DGG), their pin functions differ: CY74FCT162374ATPACT uses shared OE/CLK per 8-bit group but assigns different pin allocations for control signals and outputs, requiring PCB redesign for substitution.

CY74FCT16374ATPACT Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74FCT

Package/Case:: 48-TFSOP (0.240", 6.10mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Function:: Standard

Type:: D-Type

Output Type:: Tri-State, Non-Inverted

Number of Elements:: 2

Number of Bits per Element:: 8

Clock Frequency:: -

Max Propagation Delay @ V, Max CL:: -

Trigger Type:: Positive Edge

Current - Output High, Low:: 32mA, 64mA

Voltage - Supply:: 4.5V ~ 5.5V

Current - Quiescent (Iq):: 500 µA

Input Capacitance:: 4.5 pF

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

CY74FCT16374ATPACT FAQ

1.How can I place an order for CY74FCT16374ATPACT through Aetrix?

Please submit a Request for Quotation (RFQ) for CY74FCT16374ATPACT 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 CY74FCT16374ATPACT reliable?

The price and inventory of CY74FCT16374ATPACT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT16374ATPACT is usually 5 days.

3.What payment methods are accepted for CY74FCT16374ATPACT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT16374ATPACT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY74FCT16374ATPACT?

CY74FCT16374ATPACT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY74FCT16374ATPACT 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 CY74FCT16374ATPACT?

For technical support, including CY74FCT16374ATPACT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT16374ATPACT requirements.

6.How does Aetrix verify that CY74FCT16374ATPACT is sourced from the original manufacturer or authorized distributors?

All CY74FCT16374ATPACT 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 CY74FCT16374ATPACT meets industry standards.

7.What is the process for return or replacement of CY74FCT16374ATPACT?

All CY74FCT16374ATPACT units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT16374ATPACT, 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 CY74FCT16374ATPACT part is unused and in its original packaging.

Return procedure for CY74FCT16374ATPACT:

1.Submit a request within 90 days.

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

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