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

Texas Instruments 74FCT162823ATPACT

Name: 74FCT162823ATPACT
Brand: Texas Instruments
SKU: 74FCT162823ATPACT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74FCT162823ATPACT

Manufacturer:: Texas Instruments

Category:: Flip Flops

Package:: 56-TFSOP (0.240", 6.10mm Width)

Datasheet:: 74FCT162823ATPACT.pdf

Description:: IC FF D-TYPE DUAL 9BIT 56TSSOP

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Product details

Overview

74FCT162823ATPACT from Texas Instruments is an 18-bit bus interface register with balanced 24 mA output drivers, designed for high-speed transmission-line driving in industrial systems. It operates at 5V ±10%, supports −40°C to +85°C ambient, features Ioff for partial-power-down mode, and delivers typical ground bounce <0.6 V at VCC = 5 V, TA = 25°C.

For engineers reviewing the 74FCT162823ATPACT datasheet, 74FCT162823ATPACT pinout, 74FCT162823ATPACT application, or 74FCT162823ATPACT equivalent, key selection criteria include propagation delay (max 10.0 ns CLK→Q), output skew (<0.5 ns), three-state control via active-low OE/CLKEN/CLR, TSSOP-56 package compatibility, and reduced system switching noise for backplane and point-to-point interconnects.

Technical Context

The 74FCT162823ATPACT implements dual 9-bit registers with flow-through pinout, enabling 18-bit operation through shared control lines (CLK, CLKEN, CLR, OE). Its architecture includes current-limiting resistors integrated into 24 mA balanced output drivers to minimize undershoot and eliminate need for external termination.

It fully supports partial-power-down via Ioff circuitry that disables outputs when VCC = 0 V, preventing backflow current. The device uses TTL-compatible input thresholds (VIH = 2.0 V, VIL = 0.8 V) and delivers specified timing across CL = 50 pF / RL = 500 Ω loads, with tSU(D→CLK) = 3.0 ns and tW(CLK) = 6.0 ns minimum pulse width.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Supply	5 V ±10% - ensures compatibility with legacy 5-V logic systems and stable operation across industrial voltage variation.
Propagation Delay	10.0 ns max (CLK→Q, CL=50 pF) - enables reliable timing in 100-MHz-class synchronous buses.
Output Drive	24 mA balanced sink/source - provides controlled edge rates and low ground bounce (<0.6 V) for clean signal integrity on transmission lines.
Operating Temperature	−40°C to +85°C - certified for industrial environments without derating or thermal management overhead.
Ioff Support	1 µA max at VCC = 0 V - prevents damaging current backflow during hot-insertion or partial system power-down.
Output Skew	0.5 ns max - guarantees deterministic timing alignment across all 18 outputs for parallel data capture.
Package	TSSOP-56 (DGG, 19.6-mil pitch) - enables high-density PCB layout with standard surface-mount reflow compatibility.

Pinout & Package

74FCT162823ATPACT is housed in a 56-pin Thin Shrunk Small Outline Package (TSSOP), JEDEC MO-153 compliant, with 19.6-mil lead pitch, body dimensions 13.90 × 14.10 × 1.20 mm, and moisture sensitivity level (MSL) Level-1 (unlimited floor life at ≤30°C/60% RH).

Pin/Terminal	Circuit Role	Design Meaning
1CLR, 2CLR	Asynchronous Clear (Active LOW)	Resets all 18 Q outputs to LOW independently of clock; requires ≥6.0 ns minimum pulse width.
1CLK, 2CLK	Clock Inputs	Edge-triggered latching inputs for respective 9-bit register sections; min 6.0 ns HIGH/LOW pulse width required.
1CLKEN, 2CLKEN	Clock Enable (Active LOW)	Gates clock propagation to register; set-up time 3.0 ns relative to CLK edge; no hold time required.
1OE, 2OE	Output Enable (Active LOW)	Controls three-state output drivers; enable/disable times ≤12.0 ns (OE→Q) and ≤8.0 ns (Q→Hi-Z) at CL=50 pF.
D1–D18	Data Inputs	18 parallel CMOS/TTL-compatible inputs accepting VIH ≥2.0 V, VIL ≤0.8 V; input capacitance 4.5 pF typical.
Q1–Q18	Three-State Outputs	18 buffered, 24 mA balanced outputs with VOL ≤0.55 V at 24 mA and VOH ≥2.4 V at −24 mA.
VCC, GND	Power Rails	Single 5-V supply with multiple VCC/GND pairs distributed across package to reduce simultaneous switching noise.

Key Features

Feature	Design Value
Balanced 24 mA output drivers	Eliminates need for external series termination resistors and reduces ground bounce to <0.6 V, improving signal fidelity on PCB traces.
Ioff partial-power-down support	Enables safe operation in mixed-voltage or hot-swap systems by disabling outputs and limiting backflow current to ≤1 µA when VCC = 0 V.
Edge-rate control circuitry	Integrates controlled slew rate to suppress EMI and crosstalk in dense routing, verified by typical output skew <0.5 ns.
Flow-through pinout	Minimizes trace length and layer transitions in 18-bit bus layouts, reducing parasitic inductance and impedance discontinuities.
Industrial temperature range	Guarantees full parametric performance from −40°C to +85°C without derating, suitable for uncontrolled enclosure environments.

Applications

Backplane Interconnect	High-Speed Data Acquisition
Use Scenario: Driving 18-bit parallel data across multi-layer backplanes with >100-mm trace lengths and characteristic impedance ~50 Ω. IC Role / Device Role / Timing Role: Bus interface register providing synchronized latching, three-state isolation, and matched-output drive for impedance-controlled signaling. Use Value: Balanced 24 mA drivers and integrated current limiting reduce reflection-induced jitter and eliminate discrete termination components.	Use Scenario: Capturing parallel ADC outputs (e.g., 18-bit SAR or pipeline converters) into FPGA or microcontroller data buffers. IC Role / Device Role / Timing Role: Synchronizing and buffering wide digital words with minimal skew to preserve timing margins under varying load conditions. Use Value: 0.5 ns max output skew and 10 ns max propagation delay ensure setup/hold compliance for 100-MHz sampling clocks.
Industrial PLC I/O Module	Test Equipment Digital Pattern Generator
Use Scenario: Isolating and conditioning 18-bit digital I/O signals between field-side sensors/actuators and controller-side logic in programmable logic controllers. IC Role / Device Role / Timing Role: Level-shifting and noise-immune bus register with Ioff protection during module hot-swap or power sequencing events. Use Value: Ioff support limits backflow current to ≤1 µA at VCC = 0 V, preventing damage to powered subsystems during insertion/removal.	Use Scenario: Generating precise, skew-controlled 18-bit stimulus patterns for IC functional testing or board-level validation. IC Role / Device Role / Timing Role: High-fidelity pattern latch with deterministic timing, three-state capability for bus sharing, and robust drive strength for capacitive test fixtures. Use Value: 24 mA drive and <0.6 V ground bounce maintain signal integrity across 50+ pF fixture loads and repeated switching cycles.

Backplane Interconnect

High-Speed Data Acquisition

Use Scenario: Driving 18-bit parallel data across multi-layer backplanes with >100-mm trace lengths and characteristic impedance ~50 Ω.

IC Role / Device Role / Timing Role: Bus interface register providing synchronized latching, three-state isolation, and matched-output drive for impedance-controlled signaling.

Use Value: Balanced 24 mA drivers and integrated current limiting reduce reflection-induced jitter and eliminate discrete termination components.

Use Scenario: Capturing parallel ADC outputs (e.g., 18-bit SAR or pipeline converters) into FPGA or microcontroller data buffers.

IC Role / Device Role / Timing Role: Synchronizing and buffering wide digital words with minimal skew to preserve timing margins under varying load conditions.

Use Value: 0.5 ns max output skew and 10 ns max propagation delay ensure setup/hold compliance for 100-MHz sampling clocks.

Industrial PLC I/O Module

Test Equipment Digital Pattern Generator

Use Scenario: Isolating and conditioning 18-bit digital I/O signals between field-side sensors/actuators and controller-side logic in programmable logic controllers.

IC Role / Device Role / Timing Role: Level-shifting and noise-immune bus register with Ioff protection during module hot-swap or power sequencing events.

Use Value: Ioff support limits backflow current to ≤1 µA at VCC = 0 V, preventing damage to powered subsystems during insertion/removal.

Use Scenario: Generating precise, skew-controlled 18-bit stimulus patterns for IC functional testing or board-level validation.

IC Role / Device Role / Timing Role: High-fidelity pattern latch with deterministic timing, three-state capability for bus sharing, and robust drive strength for capacitive test fixtures.

Use Value: 24 mA drive and <0.6 V ground bounce maintain signal integrity across 50+ pF fixture loads and repeated switching cycles.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 18-bit bus interface register applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY74FCT162823CTPACT	6.0 ns max propagation delay (vs. 10.0 ns); otherwise identical pinout, drive strength, and feature set.	Suitable where tighter timing budgets require faster register response, e.g., >150-MHz clock domains.	Select CY74FCT162823CTPACT only if design requires sub-10 ns CLK→Q delay; otherwise 74FCT162823ATPACT offers same noise performance at relaxed timing margin.
74FCT162823ATPVCT	SSOP-56 package (25-mil pitch, 300-mil width) vs. TSSOP-56 (19.6-mil pitch, 240-mil width); identical electrical specs.	Preferred for legacy board designs using wider SSOP footprints or where thermal mass requirements favor larger package.	Choose 74FCT162823ATPVCT only if existing PCB layout or assembly process mandates SSOP; TSSOP offers higher density and finer pitch compatibility.

Compared with CY74FCT162823CTPACT, the 74FCT162823ATPACT trades 4 ns of propagation delay for identical noise suppression and Ioff behavior-ideal for cost-optimized industrial timing where 10 ns suffices. Against 74FCT162823ATPVCT, it delivers same functionality in a 20% smaller footprint with improved thermal dissipation per unit area.

Availability

74FCT162823ATPACT is available at Aetrix Electronics and suitable for industrial PLC I/O modules, high-speed data acquisition systems, and backplane interconnects requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant green packaging.

Supply support for 74FCT162823ATPACT 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 74FCT162823ATPACT belongs to TI's FCT logic family-designed specifically for high-speed, low-noise 5-V bus interfacing in industrial control and instrumentation systems where signal integrity and power-down safety are critical.

FAQ

What is the maximum propagation delay of the 74FCT162823ATPACT?

The 74FCT162823ATPACT has a maximum propagation delay of 10.0 ns from CLK to Q under standard test conditions (CL = 50 pF, RL = 500 Ω). This value applies across the full industrial temperature range (−40°C to +85°C) and 5 V ±10% supply, ensuring predictable timing in synchronous 100-MHz-class systems without derating.

Does the 74FCT162823ATPACT support partial-power-down operation?

Yes, the 74FCT162823ATPACT supports partial-power-down via its Ioff circuitry. When VCC = 0 V, output leakage is limited to ≤1 µA, preventing damaging current backflow into powered sections of the system. This feature is validated per JEDEC JESD78 and enables safe hot-swap and mixed-voltage board architectures.

What package type and footprint does the 74FCT162823ATPACT use?

The 74FCT162823ATPACT uses a 56-pin Thin Shrunk Small Outline Package (TSSOP), designated DGG, with 19.6-mil lead pitch and JEDEC MO-153 compliance. Its body measures 13.90 mm × 14.10 mm × 1.20 mm, and it ships in tape-and-reel format (2000 units/reel) with MSL Level-1 rating.

How does the 74FCT162823ATPACT reduce ground bounce compared to standard FCT registers?

The 74FCT162823ATPACT reduces ground bounce to <0.6 V (typical at VCC = 5 V, TA = 25°C) by integrating current-limiting resistors into its balanced 24 mA output drivers. This design minimizes transient current spikes during simultaneous switching, unlike the CY74FCT16823T which exhibits up to 1.0 V ground bounce under identical conditions.

Can the 74FCT162823ATPACT be used as a direct replacement for CY74FCT16823ATPACT?

No-the 74FCT162823ATPACT is not a direct replacement for CY74FCT16823ATPACT due to fundamental differences in output drive architecture: the former uses balanced 24 mA drivers optimized for transmission lines, while the latter provides asymmetrical 64 mA sink / 32 mA source drive for heavy capacitive loads. Pinout and logic function are identical, but drive strength and noise behavior differ significantly.

74FCT162823ATPACT Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74FCT

Package/Case:: 56-TFSOP (0.240", 6.10mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Function:: Master Reset

Type:: D-Type

Output Type:: Tri-State, Non-Inverted

Number of Elements:: 2

Number of Bits per Element:: 9

Clock Frequency:: -

Max Propagation Delay @ V, Max CL:: 10ns @ 5V, 50pF

Trigger Type:: Positive Edge

Current - Output High, Low:: 24mA, 24mA

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:: 56-TSSOP

74FCT162823ATPACT FAQ

1.How can I place an order for 74FCT162823ATPACT through Aetrix?

Please submit a Request for Quotation (RFQ) for 74FCT162823ATPACT 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 74FCT162823ATPACT reliable?

The price and inventory of 74FCT162823ATPACT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74FCT162823ATPACT is usually 5 days.

3.What payment methods are accepted for 74FCT162823ATPACT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74FCT162823ATPACT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74FCT162823ATPACT?

74FCT162823ATPACT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74FCT162823ATPACT 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 74FCT162823ATPACT?

For technical support, including 74FCT162823ATPACT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74FCT162823ATPACT requirements.

6.How does Aetrix verify that 74FCT162823ATPACT is sourced from the original manufacturer or authorized distributors?

All 74FCT162823ATPACT 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 74FCT162823ATPACT meets industry standards.

7.What is the process for return or replacement of 74FCT162823ATPACT?

All 74FCT162823ATPACT units undergo pre-shipment inspection (PSI). If there is an issue with 74FCT162823ATPACT, 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 74FCT162823ATPACT part is unused and in its original packaging.

Return procedure for 74FCT162823ATPACT:

1.Submit a request within 90 days.

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

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