Texas Instruments CY74FCT16652CTPVC

Overview

CY74FCT16652CTPVC from Texas Instruments is a 16-bit registered transceiver organized as two independent 8-bit bus transceivers with three-state D-type registers, 5.4 ns max propagation delay (bus-to-bus), 5 V ±10% supply, −40°C to +85°C industrial temperature range, and 56-lead SSOP package. It enables bidirectional data transfer between two buses with real-time or stored-data selection in high-noise industrial backplane applications.

For engineers reviewing the CY74FCT16652CTPVC datasheet, CY74FCT16652CTPVC pinout, CY74FCT16652CTPVC application, or CY74FCT16652CTPVC equivalent, key selection criteria include output drive strength (64 mA sink / 32 mA source), ground bounce performance (VOLP < 1.0 V), Ioff partial-power-down support, edge-rate controlled outputs, and precise timing control via dual clock and select inputs.

Technical Context

This device implements dual 8-bit registered transceiver logic with independent CLKAB/CLKBA clocks and SAB/SBA select controls, allowing simultaneous or staggered storage of A- and B-bus data into internal D flip-flops. Output enable (OEAB/OEBA) operates independently per direction, supporting isolated bus driving or bidirectional flow control.

It features TTL-compatible input thresholds (VIH = 2.0 V, VIL = 0.8 V), low-output skew (<250 ps typical), and Ioff circuitry that disables outputs during power-down to prevent backflow current. The 56-pin SSOP package supports industrial thermal and mechanical requirements without requiring external termination resistors.

Key Specifications

Pinout & Package

Package: 56-lead SSOP (O56), 300-mil body width, 0.5 mm pitch, 1.2 mm max height, JEDEC MO-153 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY74FCT16652CTPVC, CY74FCT162652CTPVC trades peak drive strength for superior signal integrity on matched lines, while CY74FCT16652ATPVC offers identical functionality at reduced speed-enabling direct PCB reuse with timing validation.

Availability

CY74FCT16652CTPVC is available at Aetrix Electronics and suitable for industrial backplane interfaces, programmable logic controller I/O modules, and automated test equipment fixtures requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for CY74FCT16652CTPVC 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 and embedded processing solutions, with deep expertise in high-speed logic, interface, and industrial-grade IC design.

CY74FCT16652CTPVC belongs to the FCT logic family engineered for robust 5-V operation in noise-prone industrial environments, emphasizing timing precision, drive strength, and power-down safety for mission-critical bus infrastructure.

FAQ

What is the maximum clock frequency supported by CY74FCT16652CTPVC?

CY74FCT16652CTPVC does not specify a maximum clock frequency in its datasheet; instead, it guarantees timing margins via propagation delays (≤5.4 ns bus-to-bus) and setup/hold requirements (tSU = 2.0 ns, tH = 1.5 ns). System-level maximum frequency depends on board layout, load capacitance, and control signal timing - typically supporting reliable operation up to 100–120 MHz in well-designed backplane applications. CY74FCT16652CTPVC's 5.4 ns delay enables such rates with adequate timing slack.

Does CY74FCT16652CTPVC support hot-swap or partial-power-down operation?

Yes, CY74FCT16652CTPVC includes Ioff circuitry that actively disables outputs when VCC = 0 V, preventing damaging current backflow during hot-insertion or partial system power-down. This feature is explicitly characterized in the datasheet with IOFF ≤ ±1 µA at VCC = 0 V and VOUT ≤ 4.5 V, making CY74FCT16652CTPVC suitable for modular industrial systems requiring live module replacement without powering down the entire chassis.

What is the difference between CY74FCT16652CTPVC and CY74FCT162652CTPVC?

CY74FCT16652CTPVC provides asymmetric 64 mA sink / 32 mA source drive optimized for driving heavy capacitive loads like backplanes, while CY74FCT162652CTPVC uses balanced 24 mA drivers with built-in current-limiting resistors to reduce ground bounce (<0.6 V) and eliminate need for external terminations. They share identical pinout and logic function but differ in drive architecture - CY74FCT16652CTPVC is not a drop-in replacement for CY74FCT162652CTPVC in transmission-line applications due to distinct noise and impedance behavior.

Is CY74FCT16652CTPVC pin-compatible with CY74FCT16652ATPVC?

Yes, CY74FCT16652CTPVC and CY74FCT16652ATPVC are fully pin-compatible and functionally identical, differing only in speed grade: CY74FCT16652CTPVC has 5.4 ns max propagation delay, while CY74FCT16652ATPVC is rated at 6.3 ns. Both use the same 56-lead SSOP (O56) package and share identical DC characteristics, timing parameters (except delay), and application circuitry - enabling direct substitution where timing budgets allow the 0.9 ns increase.

What package type and dimensions does CY74FCT16652CTPVC use?

CY74FCT16652CTPVC uses a 56-lead Shrunk Small Outline Package (SSOP), designated O56, with 300-mil body width, 0.5 mm lead pitch, and 1.2 mm maximum height. Its JEDEC MO-153-compliant footprint measures 13.9–14.1 mm × 7.9–8.3 mm, and the package includes exposed pad-less construction with gull-wing leads. This SSOP variant is distinct from TSSOP versions used by other FCT16xxx variants and requires corresponding land pattern and stencil design per TI's DGG0056A specification.