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Texas Instruments CY74FCT16823CTPACT
- Part No.:
- CY74FCT16823CTPACT
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
CY74FCT16823CTPACT.pdf
- Description:
- IC FF D-TYPE DUAL 9BIT 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,714
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Product details
Overview
CY74FCT16823CTPACT from Texas Instruments is an 18-bit bus interface register IC designed for high-speed, low-power systems requiring wide data path registration with parity support. It features 56-pin TSSOP packaging, 64 mA sink / 32 mA source drive capability, typical output skew < 250 ps, Ioff partial-power-down support, and operates across −40°C to +85°C at VCC = 5V ± 10%. It is used in backplane-driven industrial control and memory interface subsystems.
For engineers reviewing the CY74FCT16823CTPACT datasheet, CY74FCT16823CTPACT pinout, CY74FCT16823CTPACT application, or CY74FCT16823CTPACT equivalent, key selection criteria include propagation delay (tPLH/tPHL ≤ 6.0 ns), three-state output enable/disable timing (tPZH/tPHZ ≤ 5.5/6.5 ns), ground bounce performance (VOLP < 1.0 V), and compatibility with 5-V TTL/CMOS logic families in dense PCB layouts.
Technical Context
The CY74FCT16823CTPACT implements dual 9-bit registers synchronized by a common clock with independent clock enable (CLKEN) and asynchronous clear (CLR) inputs per section. Its flow-through pinout minimizes trace length mismatch and supports clean signal routing on high-density boards.
It integrates edge-rate control circuitry to reduce switching noise and ESD protection >2000 V. The device uses Ioff circuitry to disable outputs during partial power-down, preventing backflow current when VCC = 0 V and input/output voltages reach up to 4.5 V.
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 environments |
| Propagation Delay (CLK→Q) | ≤ 6.0 ns @ CL = 50 pF - enables reliable operation in sub-100-MHz synchronous bus interfaces |
| Output Drive | 64 mA sink / 32 mA source - sufficient to drive high-capacitance backplanes and unterminated stubs |
| Ground Bounce (VOLP) | < 1.0 V @ VCC = 5 V, TA = 25°C - reduces noise coupling into shared ground planes |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded and automation applications |
| Ioff Current | ≤ 1 µA @ VCC = 0 V - ensures safe isolation during hot-swap or partial-power-down sequences |
| Input Hysteresis | 100 mV - improves noise immunity on slow-rising or noisy control signals (CLKEN, CLR, OE) |
Pinout & Package
Package: 56-pin Thin Shrunk Small Outline Package (TSSOP), Z56 drawing, 240-mil body width, 1.2 mm max height, 0.5 mm pitch, RoHS-compliant CU NIPDAU finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1CLR, 2CLR | Asynchronous Clear (Active LOW) | Resets all registered outputs to LOW independently of clock; critical for system initialization and fault recovery |
| 1CLK, 2CLK | Clock Inputs | Edge-triggered sampling of D inputs; dual-clock architecture supports split-bus timing domains |
| 1CLKEN, 2CLKEN | Clock Enable (Active LOW) | Gates clock propagation-enables dynamic clock gating without glitching registered outputs |
| 1OE, 2OE | Output Enable (Active LOW) | Controls three-state output drivers; allows bus sharing and avoids contention in multi-drop configurations |
| 1D1–1D9, 2D1–2D9 | Data Inputs | Two independent 9-bit data paths; enables 18-bit parallel registration with minimal interconnect skew |
| 1Q1–1Q9, 2Q1–2Q9 | Three-State Outputs | High-drive, low-skew outputs with edge-rate control-optimized for driving 50-Ω transmission lines or capacitive loads |
| VCC, GND (×6 each) | Power & Ground Terminals | Distributed supply/ground pins minimize IR drop and improve PSRR across wide operating frequency range |
Key Features
| Feature | Design Value |
|---|---|
| Ioff partial-power-down support | Enables safe insertion/removal in live backplanes by disabling outputs when VCC = 0 V, eliminating backfeed current |
| Edge-rate controlled outputs | Reduces simultaneous switching noise (SSN) and EMI emissions-critical for mixed-signal board integration |
| Flow-through pinout | Minimizes trace length asymmetry between input and output banks, preserving signal integrity in high-speed parallel buses |
| Typical output skew < 250 ps | Ensures tight timing alignment across all 18 outputs-essential for setup/hold margin in wide-data-path interfaces |
| Industrial temperature range | Validated operation from −40°C to +85°C supports deployment in factory automation, motor drives, and outdoor infrastructure |
Applications
| Industrial Backplane Interface | Memory Expansion Subsystem |
|---|---|
|
Use Scenario: Interfacing microcontroller local bus to extended I/O or peripheral modules over 12-inch routed backplane traces. IC Role / Device Role / Timing Role: 18-bit registered buffer providing clock-aligned data capture and three-state isolation between master and slave slots. Use Value: 6.0 ns propagation delay and <250 ps output skew preserve timing margins across full bus width; 64 mA drive sustains signal integrity into 30-pF trace + connector load. |
Use Scenario: Adding external SRAM or Flash memory with parity to a 16-bit microprocessor with limited address/data bus drive capability. IC Role / Device Role / Timing Role: Registering address latch enable (ALE) and data bus signals while supporting parity generation path synchronization. Use Value: Dual 9-bit sections allow independent control of upper/lower byte groups; Ioff prevents data corruption during memory hot-plug events. |
| Programmable Logic Controller I/O Module | Test Equipment Digital Pattern Generator |
|
Use Scenario: Buffering and synchronizing digital I/O signals between FPGA-based control logic and field-connected sensors/actuators. IC Role / Device Role / Timing Role: Providing galvanically isolated, clock-domain bridged registration with configurable enable/clear for deterministic state reset. Use Value: −40°C to +85°C rating ensures reliability in uncontrolled cabinet environments; 100 mV input hysteresis rejects EMI-induced false triggers on long sensor lines. |
Use Scenario: Generating precise, skew-controlled stimulus patterns for ASIC validation using pattern memory and high-speed DAC interfaces. IC Role / Device Role / Timing Role: Latching parallel test vectors from SRAM and presenting them simultaneously to DUT inputs with minimized inter-channel skew. Use Value: Flow-through pinout simplifies layout of 18-bit parallel trace bundles; edge-rate control suppresses crosstalk between adjacent channels on dense test head PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 18-bit registered buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT16823ATPACT | Slower 10 ns propagation delay; identical pinout, drive strength, and feature set | Suitable where timing budget allows relaxed setup/hold margins; lower power consumption at same frequency | Select when system clock rate ≤ 50 MHz and reduced switching noise is prioritized over maximum speed |
| CY74FCT162823CTPACT | 24 mA balanced output drivers; lower ground bounce (VOLP < 0.6 V); no 64 mA sink capability | Better suited for transmission-line driving with series termination; less ideal for heavy capacitive loads | Choose for point-to-point LVCMOS bus segments with controlled impedance; avoid for backplane or unterminated stubs |
Compared with CY74FCT16823CTPACT, the CY74FCT16823ATPACT trades speed for noise margin and power efficiency, while the CY74FCT162823CTPACT optimizes for transmission-line integrity at the expense of raw drive strength-making CY74FCT16823CTPACT the preferred choice for high-capacitance, multi-drop industrial backplanes.
Availability
CY74FCT16823CTPACT is available at Aetrix Electronics and suitable for industrial automation, programmable logic controller (PLC) I/O expansion, and memory interface subsystems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for CY74FCT16823CTPACT 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 company delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The CY74FCT16823CTPACT belongs to TI's FCT logic family, engineered for high-speed 5-V TTL-compatible operation with enhanced noise immunity and power-down safety-targeting industrial control, test equipment, and legacy bus interface designs.
FAQ
What is the maximum clock frequency supported by CY74FCT16823CTPACT?
CY74FCT16823CTPACT does not specify a maximum clock frequency directly, but its 6.0 ns CLK-to-Q propagation delay and 3.3 ns minimum clock pulse width imply reliable operation up to approximately 100 MHz in well-designed PCB layouts with matched trace lengths and proper termination. System-level timing must account for setup/hold requirements of downstream devices.
Does CY74FCT16823CTPACT support hot-swap or partial-power-down operation?
Yes, CY74FCT16823CTPACT includes Ioff circuitry that disables outputs when VCC = 0 V, limiting off-state current to ≤1 µA and preventing damaging current backflow. This makes CY74FCT16823CTPACT suitable for live-insertion scenarios in modular backplane systems where power domains are sequenced independently.
What is the purpose of the CLKEN input on CY74FCT16823CTPACT?
The CLKEN (Clock Enable) input on CY74FCT16823CTPACT is an active-LOW signal that gates the clock path-when asserted, it blocks clock transitions from affecting registered outputs, effectively freezing data without altering the clock tree. This enables dynamic clock gating for power reduction while maintaining output state integrity in CY74FCT16823CTPACT-based systems.
Can CY74FCT16823CTPACT drive a 50-Ω transmission line directly?
CY74FCT16823CTPACT is not optimized for direct 50-Ω line driving-the CY74FCT162823CTPACT variant is better suited due to its balanced 24 mA drivers and lower ground bounce. CY74FCT16823CTPACT's 64 mA sink capability targets high-capacitance loads like backplanes; for 50-Ω lines, use series termination and verify signal integrity with oscilloscope measurements on actual CY74FCT16823CTPACT hardware.
What package type is used for CY74FCT16823CTPACT?
CY74FCT16823CTPACT uses a 56-pin Thin Shrunk Small Outline Package (TSSOP) with Z56 package drawing, 0.5 mm lead pitch, 240-mil body width, and 1.2 mm maximum height. It is RoHS-compliant with CU NIPDAU finish and JEDEC MO-153 registered footprint, designed for surface-mount assembly in space-constrained industrial PCBs.
CY74FCT16823CTPACT 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:
- 12.5ns @ 5V, 300pF
- 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:
- 56-TSSOP
CY74FCT16823CTPACT FAQ
1.How can I place an order for CY74FCT16823CTPACT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT16823CTPACT 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 CY74FCT16823CTPACT reliable?
The price and inventory of CY74FCT16823CTPACT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT16823CTPACT is usually 5 days.
3.What payment methods are accepted for CY74FCT16823CTPACT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT16823CTPACT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT16823CTPACT?
CY74FCT16823CTPACT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT16823CTPACT 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 CY74FCT16823CTPACT?
For technical support, including CY74FCT16823CTPACT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT16823CTPACT requirements.
6.How does Aetrix verify that CY74FCT16823CTPACT is sourced from the original manufacturer or authorized distributors?
All CY74FCT16823CTPACT 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 CY74FCT16823CTPACT meets industry standards.
7.What is the process for return or replacement of CY74FCT16823CTPACT?
All CY74FCT16823CTPACT units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT16823CTPACT, 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 CY74FCT16823CTPACT part is unused and in its original packaging.
Return procedure for CY74FCT16823CTPACT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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