Texas Instruments CY74FCT16652CTPVCT

Overview

CY74FCT16652CTPVCT from Texas Instruments is a 16-bit registered transceiver organized as two independent 8-bit bus transceivers with three-state D-type registers, supporting real-time or stored data transfer between A and B buses. It features 64 mA sink / 32 mA source drive strength, typical output skew < 250 ps, Ioff partial-power-down support, and operates at VCC = 5V ±10% across −40°C to +85°C.

For engineers reviewing the CY74FCT16652CTPVCT datasheet, CY74FCT16652CTPVCT pinout, CY74FCT16652CTPVCT application, or CY74FCT16652CTPVCT equivalent, this device is selected for high-speed bidirectional bus interfacing in industrial backplane and memory subsystem designs where controlled edge rates, low ground bounce (<1.0V), and register-synchronized data flow are required.

Technical Context

This device implements dual 8-bit registered transceiver logic with separate CLKAB/CLKBA clocks and SAB/SBA select controls, enabling independent storage and multiplexed transmission of data either directly from input buses or from internal D-flip-flop registers. OEAB/OEBA pins provide per-bus three-state output control.

It uses FCT-family CMOS technology with TTL-compatible inputs and outputs, supports Ioff for live-insertion and partial-power-down operation, and includes edge-rate control circuitry to reduce system noise - confirmed by typical VOLP (ground bounce) < 1.0 V at VCC = 5 V, TA = 25°C.

Key Specifications

Pinout & Package

Package: 56-pin SSOP (O56), 300-mil body width, 25-mil pitch, 1.2 mm max height - compatible with standard industrial PCB assembly processes and reflow profiles.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar registered transceiver applications.

Compared with CY74FCT16652CTPVCT, CY74FCT162652CTPVCT trades peak drive for superior signal integrity on controlled-impedance lines, while SN74FCT16652CPAG offers footprint reduction at the cost of industrial temperature range, Ioff, and drive capability - making CY74FCT16652CTPVCT the sole choice for ruggedized, high-current, hot-swap-capable backplane interfaces.

Availability

CY74FCT16652CTPVCT is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory subsystem buffering, hot-swappable module interconnects, and legacy bus extension requiring stable component supply and long-term lifecycle support.

Supply support for CY74FCT16652CTPVCT 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 connectivity solutions for industrial, automotive, and communications markets.

CY74FCT16652CTPVCT belongs to TI's FCT logic family, designed specifically for high-speed, low-noise, industrial-grade bus interface applications requiring robust drive strength, register synchronization, and partial-power-down capability.

FAQ

What is the maximum clock frequency supported by CY74FCT16652CTPVCT?

CY74FCT16652CTPVCT does not specify a maximum clock frequency in its datasheet; instead, it guarantees timing performance via propagation delays (e.g., 5.4 ns max bus-to-bus delay) and minimum pulse widths (5.0 ns min clock high/low time). System-level maximum frequency depends on board layout, load capacitance, and timing margin - typically supporting >100 MHz operation in well-designed backplane applications. CY74FCT16652CTPVCT is characterized for use in synchronous bus environments where clock edges align with data valid windows defined by tSU/tH.

Does CY74FCT16652CTPVCT support hot-swap operation?

Yes, CY74FCT16652CTPVCT supports hot-swap operation through its Ioff feature, which disables outputs and blocks reverse current flow when VCC = 0 V. This prevents damage to powered system sections when the device is inserted or removed from a live backplane. The datasheet confirms Ioff compliance per JEDEC JESD78, with IOFF ≤ ±1 µA at VOUT ≤ 4.5 V and VCC = 0 V - a key design enabler for modular industrial controllers using CY74FCT16652CTPVCT.

What is the difference between CY74FCT16652CTPVCT and CY74FCT162652CTPVCT?

CY74FCT16652CTPVCT provides asymmetric 64 mA sink / 32 mA source drive optimized for driving heavy capacitive loads like backplanes, while CY74FCT162652CTPVCT delivers balanced 24 mA drive with built-in current-limiting resistors to minimize ground bounce (<0.6 V) and undershoot on transmission lines. Their pinouts and logic functions are identical, but CY74FCT16652CTPVCT is preferred for high-current bus extension, whereas CY74FCT162652CTPVCT suits controlled-impedance point-to-point links - both are valid alternatives depending on signal integrity priorities.

Is CY74FCT16652CTPVCT RoHS compliant?

Yes, CY74FCT16652CTPVCT is RoHS compliant. Per Texas Instruments' packaging documentation, the SSOP (O56) package variant carries RoHS-compliant lead finish and meets EU Directive 2011/65/EU requirements. The part marking "FCT16652C" on the device body and TI's official product change notices confirm full exemption status from lead-based solder restrictions - essential for industrial and medical equipment designs requiring CY74FCT16652CTPVCT in regulated markets.

Can CY74FCT16652CTPVCT operate at 3.3 V?

No, CY74FCT16652CTPVCT is specified exclusively for VCC = 5 V ±10% operation and is not rated for 3.3 V supply. Its input thresholds (VIH = 2.0 V, VIL = 0.8 V) and output drive characteristics (VOH/VOL tested at VCC = 4.5–5.5 V) are optimized for 5 V TTL/CMOS compatibility. Attempting 3.3 V operation risks undefined logic states, insufficient noise margin, and failure to meet timing specifications - designs requiring 3.3 V must select a different family such as LVC or AUC, not CY74FCT16652CTPVCT.