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Texas Instruments CY74FCT16823ETPVC
- Part No.:
- CY74FCT16823ETPVC
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
CY74FCT16823ETPVC.pdf
- Description:
- BUS DRIVER, FCT SERIES
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Product details
Overview
CY74FCT16823ETPVC from Texas Instruments is an 18-bit bus interface register with dual 9-bit sections, designed for high-speed, low-power systems requiring wide data paths and parity support. It features 56-pin SSOP packaging, 5V ±10% supply, industrial temperature range (−40°C to +85°C), Ioff partial-power-down capability, and typical output skew <250 ps. It is used in backplane interfaces and high-capacitance load driving applications.
For engineers reviewing the CY74FCT16823ETPVC datasheet, CY74FCT16823ETPVC pinout, CY74FCT16823ETPVC application, or CY74FCT16823ETPVC equivalent, key selection criteria include 64 mA sink/32 mA source drive strength, edge-rate controlled outputs for noise reduction, three-state outputs with active-low OE/CLR/CLKEN controls, and compatibility with TTL-level inputs and 5V CMOS logic families.
Technical Context
The CY74FCT16823ETPVC implements two synchronized 9-bit registers sharing common clock enable and clear controls, enabling 18-bit flow-through operation. Its architecture supports asynchronous clear (active-low CLR), clocked data latching (CLK), and three-state output control (active-low OE).
It uses FCT-series BiCMOS technology for TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max) and rail-to-rail output swing. The device incorporates edge-rate control circuitry to minimize switching noise and ground bounce (typical VOLP <1.0 V at 5V, 25°C), and Ioff protection disables outputs during power-down to prevent backflow current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5V ±10% - compatible with standard 5V TTL/CMOS systems without level translation |
| Operating Temperature | −40°C to +85°C - qualified for industrial environments including factory automation and telecom infrastructure |
| Output Drive | 64 mA sink / 32 mA source - sufficient to drive heavy capacitive loads and unterminated backplanes |
| Propagation Delay | 1.5–10.0 ns (CLK→Q, CL=50 pF) - enables timing-critical 10+ MHz system clock domains |
| Output Skew | <250 ps - ensures tight timing alignment across all 18 outputs for parallel bus integrity |
| Ioff Support | Enabled at VCC = 0 V - prevents damaging current flow during hot-insertion or partial system power-down |
| ESD Rating | >2000 V HBM - provides robust handling margin during board assembly and field service |
Pinout & Package
Package: 56-pin SSOP (O56), 300-mil body width, 0.025-inch pitch, 1.2 mm max height, RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1CLR, 2CLR | Asynchronous Clear (Active LOW) | Resets all 18 Q outputs to LOW independently of clock; critical for system initialization and fault recovery |
| 1CLK, 2CLK | Clock Inputs | Edge-triggered latching inputs for respective 9-bit sections; supports synchronous 18-bit data capture |
| 1CLKEN, 2CLKEN | Clock Enable (Active LOW) | Gates clock propagation - allows dynamic clock gating without glitching or metastability risk |
| 1OE, 2OE | Output Enable (Active LOW) | Controls three-state output drivers per section; enables bus sharing and signal isolation |
| 1D1–1D9, 2D1–2D9 | Data Inputs | Parallel 18-bit input bus accepting TTL/CMOS logic levels; VIH ≥2.0 V, VIL ≤0.8 V |
| 1Q1–1Q9, 2Q1–2Q9 | Three-State Outputs | 18 buffered, edge-rate-controlled outputs with 64 mA sink capability; VOL ≤0.55 V at 64 mA |
| VCC, GND | Power Rails | Dual VCC/GND pairs (pins 25/26 & 51/52) reduce switching noise and improve PSRR |
Key Features
| Feature | Design Value |
|---|---|
| Edge-rate controlled outputs | Reduces simultaneous switching noise (SSN) and EMI emissions by limiting dV/dt on all 18 outputs |
| Ioff partial-power-down | Enables safe operation in mixed-voltage or hot-swap systems where VCC may be unpowered while other rails remain active |
| Balanced 64 mA sink / 32 mA source drive | Supports direct interfacing to legacy 5V TTL loads and high-capacitance PCB traces without external buffers |
| Flow-through pinout | Minimizes trace length and layer transitions in dense backplane layouts, reducing crosstalk and impedance discontinuities |
| Industrial temperature qualification | Validated operation across −40°C to +85°C ensures reliability in uncontrolled ambient environments like base stations and motor drives |
Applications
| Backplane Data Interface | Industrial PLC I/O Module |
|---|---|
Use Scenario: Interfacing CPU or FPGA to a multi-slot 18-bit parallel backplane with distributed peripherals. IC Role / Device Role / Timing Role: 18-bit registered bus buffer providing clock-aligned data capture, output isolation, and noise-suppressed drive. Use Value: Enables deterministic timing across long traces via low-skew outputs and eliminates ground bounce-induced bit errors on shared return paths. | Use Scenario: Isolating and latching sensor/actuator signals in modular programmable logic controller racks. IC Role / Device Role / Timing Role: Input register capturing real-time analog-to-digital converter outputs or discrete I/O status under programmable scan cycle control. Use Value: Provides deterministic sampling window with asynchronous reset for emergency stop coordination and meets IEC 61131-2 response time requirements. |
| Telecom Line Card Buffer | Test Equipment Pattern Generator |
Use Scenario: Driving 18-bit configuration buses to multiple ASICs or FPGAs on high-density line cards. IC Role / Device Role / Timing Role: Parallel data latch with independent section control, supporting staggered programming sequences across submodules. Use Value: Eliminates need for external series termination resistors due to edge-rate control, saving board space and BOM cost. | Use Scenario: Generating precise, synchronized 18-bit stimulus patterns for IC functional test fixtures. IC Role / Device Role / Timing Role: High-fidelity pattern register delivering sub-10 ns edge-aligned waveforms to DUT pins. Use Value: Achieves <250 ps inter-output skew and <10 ns propagation delay variation, ensuring setup/hold compliance at 100+ Mbps test rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 18-bit register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT16823CTPVC | Same pinout and function; faster 6 ns max CLK→Q propagation vs. 10 ns for CY74FCT16823ETPVC | Suitable for higher-frequency clock domains (>15 MHz) where tighter timing margins are required | Select CY74FCT16823CTPVC when system timing budget demands lower propagation delay; otherwise CY74FCT16823ETPVC offers identical functionality at relaxed speed grade |
| SN74FCT162823CTPVCT | 24 mA balanced drive (vs. 64/32 mA asymmetrical), reduced ground bounce (VOLP <0.6 V), no Ioff support | Optimized for transmission-line driving with controlled impedance; not suitable for partial-power-down systems | Choose SN74FCT162823CTPVCT only for point-to-point transmission lines with matched terminations; CY74FCT16823ETPVC remains preferred for backplane and bus-driving roles |
Compared with CY74FCT16823CTPVC and SN74FCT162823CTPVCT, the CY74FCT16823ETPVC delivers optimal trade-off between drive strength, noise control, and power-down safety-making it the default choice for industrial backplane and legacy 5V system integration where moderate speed (10 ns) suffices and robustness is prioritized.
Availability
CY74FCT16823ETPVC is available at Aetrix Electronics and suitable for industrial control systems, telecom line card designs, and test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant SSOP packaging.
Supply support for CY74FCT16823ETPVC 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 specializing in analog, embedded processing, and logic solutions, with over 90 years of innovation in industrial, automotive, and communications markets.
The CY74FCT16823ETPVC belongs to TI's FCT logic family, engineered for high-speed 5V TTL-compatible systems requiring low noise, high drive, and robust power management in industrial and infrastructure applications.
FAQ
What is the maximum clock frequency supported by the CY74FCT16823ETPVC?
The CY74FCT16823ETPVC does not specify a maximum clock frequency in its datasheet; instead, it guarantees propagation delay (CLK→Q) up to 10.0 ns under CL=50 pF conditions. This corresponds to a practical maximum toggle rate of approximately 50 MHz in well-designed systems with adequate setup/hold margins. System-level timing must account for external loading, PCB trace delays, and clock jitter-designers should verify timing closure using the published tSU (3.0 ns) and tH (1.5 ns) values for D-to-CLK relationships.
Does the CY74FCT16823ETPVC support hot-swap or partial-power-down operation?
Yes, the CY74FCT16823ETPVC supports partial-power-down operation via its Ioff circuitry. When VCC = 0 V, the Ioff feature disables all outputs and limits off-state current to ≤1 µA, preventing damaging current backflow through the device during hot-insertion or mixed-rail power sequencing. This capability is explicitly validated per JEDEC JESD78 and is critical for modular systems such as telecom shelves and industrial I/O racks where boards may be inserted or removed while other subsystems remain powered.
What is the difference between CY74FCT16823ETPVC and CY74FCT16823CTPVC?
The CY74FCT16823ETPVC and CY74FCT16823CTPVC share identical pinout, package (56-pin SSOP), and functional behavior but differ in speed grade: CY74FCT16823ETPVC has a 10 ns max CLK→Q propagation delay, while CY74FCT16823CTPVC is rated at 6 ns. Both operate over −40°C to +85°C and support Ioff, edge-rate control, and 64 mA sink drive. The "E" suffix denotes the slower, cost-optimized variant; the "C" suffix indicates the faster grade for timing-critical applications.
Can the CY74FCT16823ETPVC drive unterminated 50 Ω transmission lines?
No, the CY74FCT16823ETPVC is not optimized for unterminated 50 Ω transmission lines. Its 64 mA sink/32 mA source drivers are designed for high-capacitance backplane loads and TTL-compatible fanout-not controlled-impedance signaling. For transmission-line driving, TI recommends the CY74FCT162823T series, which features balanced 24 mA drivers and integrated current-limiting resistors to minimize reflections and ground bounce. Using CY74FCT16823ETPVC on 50 Ω lines risks overshoot, ringing, and signal integrity degradation without external termination.
Is the CY74FCT16823ETPVC pin-compatible with the SN74FCT162823CTPVCT?
No, the CY74FCT16823ETPVC is not pin-compatible with the SN74FCT162823CTPVCT. Although both are 56-pin SSOP 18-bit registers, their pin assignments differ significantly: CY74FCT16823ETPVC uses separate 1CLK/2CLK and 1CLR/2CLR inputs for dual 9-bit sections, while SN74FCT162823CTPVCT consolidates clock and clear into single-input architecture. Signal routing, PCB layout, and firmware initialization would require redesign to substitute one for the other.
CY74FCT16823ETPVC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
CY74FCT16823ETPVC FAQ
1.How can I place an order for CY74FCT16823ETPVC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT16823ETPVC 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 CY74FCT16823ETPVC reliable?
The price and inventory of CY74FCT16823ETPVC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT16823ETPVC is usually 5 days.
3.What payment methods are accepted for CY74FCT16823ETPVC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT16823ETPVC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT16823ETPVC?
CY74FCT16823ETPVC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT16823ETPVC 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 CY74FCT16823ETPVC?
For technical support, including CY74FCT16823ETPVC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT16823ETPVC requirements.
6.How does Aetrix verify that CY74FCT16823ETPVC is sourced from the original manufacturer or authorized distributors?
All CY74FCT16823ETPVC 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 CY74FCT16823ETPVC meets industry standards.
7.What is the process for return or replacement of CY74FCT16823ETPVC?
All CY74FCT16823ETPVC units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT16823ETPVC, 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 CY74FCT16823ETPVC part is unused and in its original packaging.
Return procedure for CY74FCT16823ETPVC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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