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Texas Instruments CY29FCT52CTQCT
- Part No.:
- CY29FCT52CTQCT
- Manufacturer:
- Texas Instruments
- Package:
- 24-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
CY29FCT52CTQCT.pdf
- Description:
- IC TXRX NON-INVERT 5.25V 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,082
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Product details
Overview
CY29FCT52CTQCT from Texas Instruments is an 8-bit registered bidirectional transceiver with dual independent clocked registers, 64-mA sink/32-mA source drive strength, 6.3-ns propagation delay, and Ioff partial-power-down support. It interfaces between two TTL-compatible buses in high-noise industrial backplanes and data acquisition systems requiring registered data flow control.
For engineers reviewing the CY29FCT52CTQCT datasheet, CY29FCT52CTQCT pinout, CY29FCT52CTQCT application, or CY29FCT52CTQCT equivalent, key selection criteria include its dual-clock enable architecture, edge-rate controlled outputs for EMI reduction, matched rise/fall times, and guaranteed 24-pin SSOP (DBQ) package compatibility with FCT-family logic designs.
Technical Context
The CY29FCT52CTQCT implements two independent 8-bit edge-triggered D-type registers - one for A→B direction (clocked by CPA/CEA), another for B→A direction (clocked by CPB/CEB). Each register features separate 3-state output enables (OEA/OEB), enabling full bidirectional bus isolation without external logic.
Its Ioff circuitry actively disables outputs when VCC = 0 V, limiting reverse current to ±1 µA and supporting hot-insertion and partial-power-down modes. Edge-rate control circuitry ensures monotonic transitions and reduces simultaneous switching noise, meeting stringent EMI requirements in dense PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation delay (tPLH/tPHL) | 2–6.3 ns - Enables reliable operation at >100 MHz system clock rates with margin. |
| Output drive (IOL/IOH) | 64 mA sink / 32 mA source - Drives heavy capacitive loads and multiple TTL inputs without buffers. |
| Voltage range (VCC) | 4.75–5.25 V - Matches standard 5-V TTL/CMOS supply rails with ±5% tolerance. |
| Ioff leakage | ±1 µA at VCC = 0 V - Prevents backflow damage during power sequencing or hot-swap events. |
| ESD rating | 2000-V HBM / 200-V MM / 1000-V CDM - Meets industrial-grade robustness requirements. |
| Operating temperature | –40°C to +85°C - Qualified for extended-temperature industrial environments. |
| Input thresholds (VIH/VIL) | 2.0 V / 0.8 V - Fully compatible with TTL logic levels and legacy 5-V systems. |
Pinout & Package
Package: 24-pin SSOP (DBQ), 0.154-inch body width, 0.025-inch pitch, RoHS-compliant NIPDAU finish, MSL Level-2-260°C-1 year.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A7 | A-register inputs / B-register outputs | 8-bit data path from A bus to B bus when OEA low and CPA↑ active. |
| B0–B7 | B-register inputs / A-register outputs | 8-bit data path from B bus to A bus when OEB low and CPB↑ active. |
| CPA | Active-high clock for A register | Triggers A→B data capture on low-to-high transition when CEA is low. |
| CPB | Active-high clock for B register | Triggers B→A data capture on low-to-high transition when CEB is low. |
| CEA / CEB | Active-low clock enable for respective register | Holds register contents when high; allows clocking only when low. |
| OEA / OEB | Active-low 3-state output enable | Places A/B outputs in high-impedance state when high; enables driving when low. |
| VCC / GND | Power and ground terminals | Single 5-V supply; decoupling required per TI layout guidelines for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent clock domains | Enables asynchronous bidirectional data transfer between isolated subsystems without handshake logic. |
| Edge-rate controlled outputs | Reduces simultaneous switching noise (SSN) by limiting dV/dt, improving signal integrity in high-density routing. |
| Ioff partial-power-down support | Allows safe insertion/removal in live backplanes while other system sections remain powered. |
| Matched rise/fall times | Minimizes duty-cycle distortion in clocked data paths, critical for setup/hold timing compliance. |
| TTL-compatible input/output levels | Eliminates level-shifting components when interfacing with legacy 5-V microcontrollers and peripherals. |
Applications
| Industrial Backplane Interface | Data Acquisition System Bus Bridge |
|---|---|
|
Use Scenario: Bidirectional communication between CPU module and I/O expansion cards across a 24-slot VMEbus-compatible backplane. IC Role / Device Role / Timing Role: Registered transceiver synchronizing data transfers between clock domains while isolating bus segments during fault conditions. Use Value: 6.3-ns propagation delay and 64-mA drive ensure clean signal edges across 30-cm traces; Ioff prevents backfeeding during card hot-swap. |
Use Scenario: Interfacing a 16-bit ADC/DAC module to a microcontroller-based controller over a shared 8-bit data bus with address/data multiplexing. IC Role / Device Role / Timing Role: Directional data latch buffering analog conversion results and control commands with independent clock enables for timing flexibility. Use Value: Dual clock enables (CEA/CEB) allow precise alignment of sample capture and command execution windows without software overhead. |
| Legacy System Bus Extender | Test Equipment Signal Conditioning |
|
Use Scenario: Extending the data bus of an aging 80C188-based motion controller to add FPGA-based servo interface logic without modifying original firmware. IC Role / Device Role / Timing Role: Registered repeater maintaining timing margins across added trace length and fanout load. Use Value: Matched rise/fall times and edge-rate control preserve signal fidelity across 15 cm of added PCB routing; TTL compatibility avoids level translation. |
Use Scenario: Isolating and conditioning digital trigger and status signals between PXI chassis controllers and modular instrument modules operating at different power states. IC Role / Device Role / Timing Role: Hot-swap-safe bidirectional buffer managing handshaking signals (READY, BUSY, STROBE) with precise timing control. Use Value: Ioff protection and ±1 µA leakage prevent false triggering during module insertion; 2.5-ns setup time supports 100-MHz handshake protocols. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar registered transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74FCT522CTSOCT | Same 24-pin SOIC package; identical 6.3-ns delay but lower 48-mA sink capability and no Ioff support. | Lacks partial-power-down protection; unsuitable for hot-swap or mixed-voltage domain isolation. | Select when cost is prioritized over hot-swap safety and board-level power sequencing complexity is low. |
| 74ACT522SCX | 5-V ACT family; 7.5-ns max delay, 24-mA output drive, no edge-rate control or Ioff. | Higher static power (ICC = 4 mA typical); not rated for industrial temperature range. | Choose only for non-critical commercial applications where EMI and thermal margin are not design constraints. |
Compared with SN74FCT522CTSOCT and 74ACT522SCX, the CY29FCT52CTQCT delivers superior noise immunity via edge-rate control, enables safer power sequencing with Ioff, and maintains tighter timing margins - making it the preferred choice for industrial backplane and test equipment designs demanding reliability and signal integrity.
Availability
CY29FCT52CTQCT is available at Aetrix Electronics and suitable for industrial backplane interfaces, data acquisition systems, legacy bus extenders, and test equipment signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CY29FCT52CTQCT 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 with over 90 years of innovation history.
The CY29FCT52CTQCT belongs to TI's FCT logic family, engineered specifically for high-speed, noise-immune 5-V digital interfacing in mission-critical industrial systems where timing precision, bus isolation, and power sequencing resilience are essential.
FAQ
What is the maximum clock frequency supported by CY29FCT52CTQCT?
The CY29FCT52CTQCT has a minimum pulse width (tw) of 3 ns and propagation delay of 2–6.3 ns, supporting reliable operation up to 100 MHz in well-designed systems. Its timing is specified under recommended conditions (VCC = 4.75–5.25 V, TA = –40°C to +85°C), and actual maximum frequency depends on PCB layout, load capacitance, and signal integrity margins. The CY29FCT52CTQCT does not include internal PLL or frequency multiplication.
Does CY29FCT52CTQCT support hot-swap operation?
Yes, the CY29FCT52CTQCT supports hot-swap operation through its Ioff circuitry, which limits reverse current to ±1 µA when VCC = 0 V. This prevents damaging backflow into powered sections of the system during live insertion or removal. The CY29FCT52CTQCT must be used with proper mechanical and electrical hot-swap design practices, including current-limiting and sequencing controls on the host backplane.
What is the difference between CY29FCT52CTQCT and CY29FCT52CTSOC?
The CY29FCT52CTQCT uses a 24-pin SSOP (DBQ) package with tape-and-reel packaging (2500 units/reel), while CY29FCT52CTSOC uses a 24-pin SOIC (DW) package in tube packaging (25 units/tube). Both share identical electrical specifications, timing, and pinout. The CY29FCT52CTQCT offers higher automation compatibility for SMT assembly; CY29FCT52CTSOC suits low-volume prototyping or manual rework scenarios.
Can CY29FCT52CTQCT drive standard TTL loads directly?
Yes, the CY29FCT52CTQCT is fully TTL-compatible: its VIH (2.0 V min) and VIL (0.8 V max) match TTL input thresholds, and its 64-mA sink / 32-mA source drive exceeds standard TTL fanout requirements (typically 10–20 mA per input). The CY29FCT52CTQCT can directly drive up to 10 standard TTL inputs per output without external buffers, provided trace capacitance remains below 50 pF.
Is CY29FCT52CTQCT pin-compatible with older FCT-series transceivers?
Yes, the CY29FCT52CTQCT is functionally, electrically, and physically pin-compatible with CY29FCT52T and industry-standard equivalents like SN74FCT522, sharing identical 24-pin SSOP pinout, signal naming (CPA, CEA, OEA, etc.), and logic behavior. This allows drop-in replacement in existing FCT-based designs without PCB or firmware changes - confirmed by TI's "Function, Pinout, and Drive Compatible" statement in the datasheet.
CY29FCT52CTQCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 29FCT
- Package/Case:
- 24-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SSOP
CY29FCT52CTQCT FAQ
1.How can I place an order for CY29FCT52CTQCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY29FCT52CTQCT 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 CY29FCT52CTQCT reliable?
The price and inventory of CY29FCT52CTQCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY29FCT52CTQCT is usually 5 days.
3.What payment methods are accepted for CY29FCT52CTQCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY29FCT52CTQCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY29FCT52CTQCT?
CY29FCT52CTQCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY29FCT52CTQCT 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 CY29FCT52CTQCT?
For technical support, including CY29FCT52CTQCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY29FCT52CTQCT requirements.
6.How does Aetrix verify that CY29FCT52CTQCT is sourced from the original manufacturer or authorized distributors?
All CY29FCT52CTQCT 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 CY29FCT52CTQCT meets industry standards.
7.What is the process for return or replacement of CY29FCT52CTQCT?
All CY29FCT52CTQCT units undergo pre-shipment inspection (PSI). If there is an issue with CY29FCT52CTQCT, 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 CY29FCT52CTQCT part is unused and in its original packaging.
Return procedure for CY29FCT52CTQCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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