Texas Instruments CY74FCT16543CTPVCT

Overview

CY74FCT16543CTPVCT from Texas Instruments is a 16-bit high-speed latched transceiver organized as two independent 8-bit D-type latched transceivers, supporting bidirectional data flow between A and B buses with separate Latch Enable (LEAB/LEBA) and Output Enable (OEAB/OEBA) controls. It delivers 64 mA sink / 32 mA source drive strength, operates at 5V ±10%, and achieves propagation delay ≤5.1 ns in transparent mode - ideal for high-capacitance backplane interfacing in industrial control systems.

For engineers reviewing the CY74FCT16543CTPVCT datasheet, CY74FCT16543CTPVCT pinout, CY74FCT16543CTPVCT application, or CY74FCT16543CTPVCT equivalent, key selection criteria include its Ioff partial-power-down support, edge-rate controlled outputs for noise reduction, ground bounce <1.0 V at 5 V, industrial temperature range (−40°C to +85°C), and SSOP-56 package compatibility with legacy board layouts.

Technical Context

This device implements dual 8-bit latch architecture with independent A-to-B and B-to-A control paths, enabling simultaneous or staggered latching and output gating. Each direction uses dedicated CE (enable), LE (latch), and OE (output) inputs, allowing precise timing isolation between input capture and output assertion.

It features Ioff circuitry that disables outputs during power-down to prevent current backflow, and edge-rate control circuitry that limits slew rate to suppress switching noise and reduce EMI - critical for stable operation in mixed-signal environments with shared ground planes.

Key Specifications

Pinout & Package

Package: 56-pin SSOP (Shrunk Small Outline Package), 300-mil body width, 0.635 mm pitch, JEDEC MO-118 compliant, RoHS-compliant green finish (Pb-free, no Sb/Br), MSL Level-1 (260°C peak reflow).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY74FCT162543CTPVCT and CY74FCT162H543CTPVCT, the CY74FCT16543CTPVCT provides superior sink current (64 mA) for direct backplane driving but lacks bus-hold and has higher ground bounce - making it optimal for fixed, high-speed interconnects where external termination or pull-ups are acceptable.

Availability

CY74FCT16543CTPVCT is available at Aetrix Electronics and suitable for industrial backplane interfaces, programmable logic interconnects, and motor drive control hubs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for CY74FCT16543CTPVCT 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 decades of industrial-grade reliability validation.

The CY74FCT16543CTPVCT belongs to TI's FCT logic family, designed specifically for high-noise-immunity, high-drive, and partial-power-down applications in industrial automation and real-time control systems.

FAQ

What is the maximum operating frequency supported by CY74FCT16543CTPVCT?

CY74FCT16543CTPVCT does not specify a maximum clock frequency, but its 5.1 ns propagation delay in transparent mode supports reliable operation up to approximately 180 MHz for single-cycle bus transfers. Actual achievable frequency depends on system-level timing margins, including setup/hold times (2.0 ns each) and board trace delays - design validation with worst-case timing analysis is recommended for >100 MHz applications using CY74FCT16543CTPVCT.

Does CY74FCT16543CTPVCT support hot-swap or partial-power-down operation?

Yes, CY74FCT16543CTPVCT integrates Ioff circuitry that actively disables all outputs when VCC = 0 V, preventing damaging current backflow during hot-insertion or partial-power-down sequences. This feature is fully specified per JEDEC standards and requires no external components - a key differentiator for modular industrial systems where CY74FCT16543CTPVCT interfaces with live backplanes.

What package type and dimensions does CY74FCT16543CTPVCT use?

CY74FCT16543CTPVCT uses a 56-pin SSOP (Shrunk Small Outline Package) with 300-mil body width, 0.635 mm lead pitch, and 1.75 mm max height. Its JEDEC MO-118 footprint matches legacy designs using CY74FCT16543TPVC and enables drop-in replacement without PCB redesign - critical for sustaining long-life industrial equipment using CY74FCT16543CTPVCT.

How does CY74FCT16543CTPVCT handle ground bounce during high-current switching?

CY74FCT16543CTPVCT limits ground bounce to <1.0 V at VCC = 5 V and TA = 25°C through integrated edge-rate control and optimized output stage design. This specification ensures logic-level integrity across all 16 outputs even under full 64 mA sink load - a verified performance metric essential for stable operation in CY74FCT16543CTPVCT-based backplane interfaces where simultaneous switching noise could otherwise corrupt adjacent signals.

Can CY74FCT16543CTPVCT be used as a direct replacement for CY74FCT16543TPVC?

Yes, CY74FCT16543CTPVCT is a speed-enhanced functional and pin-compatible replacement for CY74FCT16543TPVC, offering identical SSOP-56 packaging, control logic, and electrical interface but with reduced propagation delay (5.1 ns vs. 8.5 ns). No PCB or firmware changes are required - users upgrading legacy systems benefit immediately from tighter timing margins while retaining full compatibility with existing CY74FCT16543CTPVCT designs.