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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Texas Instruments CY74FCT16240ATPACT

Name: CY74FCT16240ATPACT
Brand: Texas Instruments
SKU: CY74FCT16240ATPACT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY74FCT16240ATPACT

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: CY74FCT16240ATPACT.pdf

Description:: IC BUFFER INVERT 5.5V 48TSSOP

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Product details

Overview

CY74FCT16240ATPACT from Texas Instruments is a 16-bit non-inverting three-state buffer/line driver IC designed for high-speed bus interface applications including memory and clock distribution. It delivers 64 mA sink and 32 mA source output drive, supports partial-power-down via I_off, operates at 5V ±10%, and features typical propagation delay of 4.8 ns and output skew <250 ps. It is used in industrial backplane driving where low ground bounce and high capacitive load tolerance are required.

For engineers reviewing the CY74FCT16240ATPACT datasheet, CY74FCT16240ATPACT pinout, CY74FCT16240ATPACT application, or CY74FCT16240ATPACT equivalent, key selection criteria include its 48-pin TSSOP package, industrial temperature range (–40°C to +85°C), I_off-enabled power-down safety, and verified 64 mA sink capability for driving heavy loads without external termination.

Technical Context

This device implements dual 8-bit sections with independent active-low three-state enable inputs (1OE, 2OE, 3OE, 4OE), enabling flexible 4-, 8-, or 16-bit bus control. Each section contains four non-inverting buffers (A→Y) with flow-through pinout optimized for PCB layout efficiency.

It uses FCT-family BiCMOS technology to achieve TTL-compatible input thresholds (V_IL = 0.8 V, V_IH = 2.0 V), low dynamic power (ICCD = 60 µA/MHz), and robust noise immunity via edge-rate control circuitry - critical for stable operation in noisy industrial environments.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Supply	5 V ±10% - ensures compatibility with standard TTL/5V logic systems and stable operation across industrial voltage variation.
Propagation Delay (t_PLH/t_PHL)	Max 4.8 ns - enables reliable timing in high-speed address/data buses up to ~200 MHz system clock domains.
Sink/Source Drive	64 mA sink / 32 mA source per output - sufficient to directly drive 50-Ω transmission lines or high-capacitance backplanes without external buffers.
I_off Support	Enabled - prevents reverse current flow during partial power-down, protecting powered-down sections in mixed-voltage or hot-swap systems.
Operating Temperature	–40°C to +85°C - qualified for continuous use in industrial control, automation, and telecom infrastructure equipment.
Output Skew	<250 ps - minimizes timing mismatch between parallel outputs, essential for synchronous bus integrity and setup/hold margin preservation.
ESD Rating	>2000 V HBM - provides robust handling tolerance during assembly and field service without additional protection circuitry.

Pinout & Package

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

Pin/Terminal	Circuit Role	Design Meaning
1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4	Data Inputs (4 groups × 4)	Non-inverting input terminals accepting TTL-level signals; each group drives corresponding Y outputs.
1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4	Three-State Outputs (4 groups × 4)	Buffered, high-drive outputs disabled to high-impedance when respective OE is HIGH.
1OE, 2OE, 3OE, 4OE	Active-Low Output Enables	Independent control per 4-bit group; LOW enables outputs, HIGH places them in high-Z state.
VCC (Pins 24, 48)	Power Supply	Dual VCC pins reduce supply inductance and improve noise rejection across wide bus operation.
GND (Pins 25, 47)	Ground Reference	Dual ground pins provide low-inductance return path, critical for minimizing ground bounce (VOLP <0.55 V @ 64 mA).

Key Features

Feature	Design Value
Flow-through pinout	Enables straight PCB trace routing between A and Y pins, reducing crosstalk and simplifying layout for dense 16-bit buses.
I_off partial-power-down	Automatically disables outputs when VCC = 0 V, preventing backflow current into powered-down subsystems in modular systems.
Edge-rate controlled outputs	Reduces simultaneous switching noise (SSN) and EMI emissions, improving signal integrity on shared backplanes.
Balanced AC characteristics	Matched t_PLH/t_PHL and low output skew (<250 ps) preserve data eye width in parallel interfaces.
Industrial temperature qualification	Guaranteed parametric performance over –40°C to +85°C, eliminating derating concerns in uncontrolled environments.

Applications

Memory Address Buffering	Clock Distribution Network
Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM or Flash devices on a shared bus. IC Role / Device Role / Timing Role: Non-inverting buffer with independent group enables, providing level-shifted, high-current drive while isolating controller from bus capacitance. Use Value: Eliminates need for discrete transistor arrays; 64 mA sink capability ensures fast edge rates into >100 pF net capacitance without waveform degradation.	Use Scenario: Distributing a single system clock to multiple synchronous peripherals (e.g., ADCs, DACs, FPGAs) with matched skew. IC Role / Device Role / Timing Role: Low-skew, high-drive fanout buffer ensuring deterministic arrival time across all 16 outputs. Use Value: <250 ps output skew maintains setup/hold margins across multi-device clock trees, avoiding timing violations at >50 MHz frequencies.
Industrial Backplane Interface	Legacy Bus Isolation
Use Scenario: Interfacing a modern MCU to legacy 16-bit ISA or VME-style backplanes with long traces and high capacitance. IC Role / Device Role / Timing Role: High-current line driver translating logic levels while suppressing ground bounce and EMI. Use Value: VOLP <0.55 V at 64 mA prevents false triggering on adjacent lines; edge-rate control reduces radiated emissions in EMC-sensitive environments.	Use Scenario: Isolating a CPU's local bus from a hot-swappable peripheral card slot in programmable logic controllers. IC Role / Device Role / Timing Role: Three-state buffer with I_off support enabling safe insertion/removal without disrupting main system power domain. Use Value: I_off blocks reverse current during card removal, protecting both host and module; independent OE pins allow selective isolation per bus segment.

Memory Address Buffering

Clock Distribution Network

Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM or Flash devices on a shared bus.

IC Role / Device Role / Timing Role: Non-inverting buffer with independent group enables, providing level-shifted, high-current drive while isolating controller from bus capacitance.

Use Value: Eliminates need for discrete transistor arrays; 64 mA sink capability ensures fast edge rates into >100 pF net capacitance without waveform degradation.

Use Scenario: Distributing a single system clock to multiple synchronous peripherals (e.g., ADCs, DACs, FPGAs) with matched skew.

IC Role / Device Role / Timing Role: Low-skew, high-drive fanout buffer ensuring deterministic arrival time across all 16 outputs.

Use Value: <250 ps output skew maintains setup/hold margins across multi-device clock trees, avoiding timing violations at >50 MHz frequencies.

Industrial Backplane Interface

Legacy Bus Isolation

Use Scenario: Interfacing a modern MCU to legacy 16-bit ISA or VME-style backplanes with long traces and high capacitance.

IC Role / Device Role / Timing Role: High-current line driver translating logic levels while suppressing ground bounce and EMI.

Use Value: VOLP <0.55 V at 64 mA prevents false triggering on adjacent lines; edge-rate control reduces radiated emissions in EMC-sensitive environments.

Use Scenario: Isolating a CPU's local bus from a hot-swappable peripheral card slot in programmable logic controllers.

IC Role / Device Role / Timing Role: Three-state buffer with I_off support enabling safe insertion/removal without disrupting main system power domain.

Use Value: I_off blocks reverse current during card removal, protecting both host and module; independent OE pins allow selective isolation per bus segment.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY74FCT162240CTPACT	24 mA balanced drive (sink/source), lower ground bounce (VOLP <0.6 V), 4.3 ns max propagation delay.	Better suited for transmission-line driving with minimal termination; less suitable for high-capacitance backplanes requiring >32 mA source.	Select when driving controlled-impedance lines where balanced drive and reduced SSN outweigh raw current demand.
SN74ALVC16240DGGR	3.3 V only (1.65–3.6 V), 24 mA drive, no I_off, 5.6 ns max delay, LVCMOS input thresholds.	Requires level-shifting for 5 V systems; lacks power-down protection; intended for low-voltage portable/embedded designs.	Choose only in new 3.3 V-only architectures; not drop-in compatible due to voltage, I_off, and timing differences.

Compared with CY74FCT16240ATPACT, CY74FCT162240CTPACT offers faster switching and lower noise but sacrifices drive strength, while SN74ALVC16240DGGR enables modern low-voltage integration but removes critical industrial safety features like I_off and 5 V tolerance.

Availability

CY74FCT16240ATPACT is available at Aetrix Electronics and suitable for industrial automation, legacy bus interfacing, and high-reliability backplane applications requiring stable component supply and long-term lifecycle support.

Supply support for CY74FCT16240ATPACT 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 with emphasis on reliability, longevity, and industrial-grade qualification.

CY74FCT16240ATPACT belongs to the FCT logic family engineered for high-speed, low-noise 5 V bus interfacing in industrial, telecom, and computing infrastructure - prioritizing drive strength, timing precision, and power-down safety.

FAQ

What is the maximum output sink current specification for CY74FCT16240ATPACT?

The CY74FCT16240ATPACT is rated for a maximum sink current of 64 mA per output under VCC = 5 V min and ambient conditions. This value is specified in the "Output Drive Characteristics" table of the official Texas Instruments datasheet (Document #: 38-00395-C), and it enables direct driving of high-capacitance loads such as backplanes or unterminated transmission lines without external buffering. The CY74FCT16240ATPACT maintains this rating across its full industrial temperature range.

Does CY74FCT16240ATPACT support partial power-down, and how is it implemented?

Yes, CY74FCT16240ATPACT supports partial power-down via its I_off circuitry. When VCC = 0 V, the I_off feature disables all outputs and limits leakage current to ±1 µA, preventing damaging reverse current flow from powered bus lines into the unpowered device. This behavior is explicitly guaranteed in the "Electrical Characteristics" section of the TI datasheet and makes CY74FCT16240ATPACT suitable for hot-swap and modular power domain architectures.

What package type and dimensions does CY74FCT16240ATPACT use?

CY74FCT16240ATPACT is packaged in a 48-pin TSSOP (Thin Shrunk Small Outline Package), designated DGG by Texas Instruments. Its body measures 12.6 mm × 6.2 mm with 0.5 mm lead pitch and maximum height of 1.2 mm. The mechanical drawing DGG0048A confirms compliance with JEDEC MO-153, and land pattern recommendations are provided in TI's packaging documentation for reliable reflow assembly.

How does CY74FCT16240ATPACT differ from CY74FCT162240T in output drive capability?

CY74FCT16240ATPACT provides asymmetric 64 mA sink / 32 mA source drive optimized for driving heavy capacitive loads and low-impedance backplanes, whereas CY74FCT162240T offers symmetric 24 mA sink/source drive with integrated current-limiting resistors for transmission-line matching. The CY74FCT16240ATPACT achieves higher current at the expense of slightly higher ground bounce (VOLP <0.55 V vs. <0.6 V), making it better suited for legacy 5 V systems demanding raw drive strength.

Is CY74FCT16240ATPACT pin-compatible with other members of the CY74FCT162xx family?

Yes, CY74FCT16240ATPACT shares identical pinout and footprint with CY74FCT162240T variants in the same package (e.g., TSSOP-48), including matching VCC, GND, A/Y, and OE pin locations. This allows direct PCB-level substitution between CY74FCT16240ATPACT and CY74FCT162240CTPACT when thermal and drive requirements permit - though functional differences in drive strength, skew, and noise behavior must be validated in the target application.

CY74FCT16240ATPACT 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

Logic Type:: Buffer, Inverting

Number of Elements:: 4

Number of Bits per Element:: 4

Input Type:: -

Output Type:: 3-State

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

Voltage - Supply:: 4.5V ~ 5.5V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

CY74FCT16240ATPACT FAQ

1.How can I place an order for CY74FCT16240ATPACT through Aetrix?

Please submit a Request for Quotation (RFQ) for CY74FCT16240ATPACT 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 CY74FCT16240ATPACT reliable?

The price and inventory of CY74FCT16240ATPACT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT16240ATPACT is usually 5 days.

3.What payment methods are accepted for CY74FCT16240ATPACT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT16240ATPACT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY74FCT16240ATPACT?

CY74FCT16240ATPACT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY74FCT16240ATPACT 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 CY74FCT16240ATPACT?

For technical support, including CY74FCT16240ATPACT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT16240ATPACT requirements.

6.How does Aetrix verify that CY74FCT16240ATPACT is sourced from the original manufacturer or authorized distributors?

All CY74FCT16240ATPACT 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 CY74FCT16240ATPACT meets industry standards.

7.What is the process for return or replacement of CY74FCT16240ATPACT?

All CY74FCT16240ATPACT units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT16240ATPACT, 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 CY74FCT16240ATPACT part is unused and in its original packaging.

Return procedure for CY74FCT16240ATPACT:

1.Submit a request within 90 days.

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

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