Texas Instruments CY74FCT16823CTPVCT

Overview

CY74FCT16823CTPVCT from Texas Instruments is an 18-bit, dual 9-bit bus interface register with asynchronous clear, clock enable, and three-state outputs. It operates at 5V ±10%, supports industrial temperature range (−40°C to +85°C), delivers 64 mA sink / 32 mA source drive, and achieves typical propagation delay of 6.0 ns (CLK→Q, CL=50 pF). It is used in high-speed backplane interfaces requiring wide data latching and noise-immune output control.

For engineers reviewing the CY74FCT16823CTPVCT datasheet, CY74FCT16823CTPVCT pinout, CY74FCT16823CTPVCT application, or CY74FCT16823CTPVCT equivalent, key selection criteria include its 56-pin SSOP package, Ioff partial-power-down support, <250 ps typical output skew, balanced timing for 18-bit flow-through routing, and compatibility with TTL-level control signals in legacy industrial bus systems.

Technical Context

This device implements two independent 9-bit registers sharing common clock, clock enable, clear, and output enable controls-enabling synchronized 18-bit latching via external interconnection of control lines. Its architecture supports simultaneous loading, holding, clearing, and high-impedance tri-state operation per function table.

The CY74FCT16823CTPVCT uses FCT logic with edge-rate controlled outputs to minimize ground bounce (<0.55 V VOL at 64 mA) and ESD protection >2000 V. It features Ioff circuitry that disables outputs during power-down to prevent backflow current, making it suitable for hot-swap and partial-power-down system designs.

Key Specifications

Pinout & Package

Package: 56-pin SSOP (O56), 300-mil body width, 0.025-inch pitch, 1.2 mm max height - surface-mount compatible with standard reflow profiles and IPC-7351 land patterns.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY74FCT16823ATPACT, CY74FCT16823CTPVCT offers tighter timing for high-frequency bus operation; compared with CY74FCT162823CTPVCT, it provides higher sink current for driving legacy backplanes but with greater ground bounce-making selection dependent on load profile and noise budget.

Availability

CY74FCT16823CTPVCT is available at Aetrix Electronics and suitable for industrial backplane interfaces, legacy bus expansion modules, automated test equipment data capture, and FPGA configuration controller applications requiring stable component supply and long-term lifecycle support.

Supply support for CY74FCT16823CTPVCT 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, industrial qualification, and long-term product support.

CY74FCT16823CTPVCT belongs to TI's FCT logic family-designed specifically for high-speed, low-noise 5V bus interfacing in industrial, telecom, and test equipment where timing precision, drive strength, and power-down safety are critical.

FAQ

What is the maximum clock frequency supported by CY74FCT16823CTPVCT?

CY74FCT16823CTPVCT does not specify a maximum clock frequency directly, but its 6.0 ns max propagation delay (CLK→Q, CL = 50 pF) and 3.3 ns min clock pulse width imply reliable operation up to approximately 100 MHz in well-terminated systems. Actual usable frequency depends on board layout, load capacitance, and timing margins for downstream logic.

Does CY74FCT16823CTPVCT support hot-swap or partial-power-down operation?

Yes, CY74FCT16823CTPVCT includes Ioff circuitry that disables outputs when VCC = 0 V, preventing damaging current backflow during hot-swap or partial-power-down sequences. This feature is fully characterized per JEDEC JESD78 and validated across the industrial temperature range.

What is the difference between CY74FCT16823CTPVCT and CY74FCT162823CTPVCT?

CY74FCT16823CTPVCT provides asymmetric 64 mA sink / 32 mA source drive optimized for driving high-capacitance backplanes, whereas CY74FCT162823CTPVCT uses balanced 24 mA drivers with current-limiting resistors to minimize ground bounce and undershoot-making it better suited for transmission-line applications with controlled impedance.

Is CY74FCT16823CTPVCT pin-compatible with CY74FCT16823ATPACT?

Yes, CY74FCT16823CTPVCT and CY74FCT16823ATPACT share identical pinout, logic function, and DC specifications-the only differences are propagation delay (6.0 ns vs. 10.0 ns) and package (SSOP vs. TSSOP). No PCB changes are required when upgrading from the 'A' to 'C' speed grade.

What are the recommended operating conditions for CY74FCT16823CTPVCT?

CY74FCT16823CTPVCT is specified for VCC = 5 V ±10% (4.5 V to 5.5 V) and ambient temperature −40°C to +85°C. Input voltages must stay within −0.5 V to +7.0 V, and unused inputs must be tied to VCC or GND. Output loads should not exceed 50 pF for guaranteed 6.0 ns timing performance.