Texas Instruments CY74FCT16245CTPVCT

Overview

CY74FCT16245CTPVCT from Texas Instruments is a 16-bit non-inverting bidirectional transceiver designed for high-speed, low-noise bus interface between two synchronous data buses. It features 64 mA sink / 32 mA source drive capability, 4.1 ns max propagation delay (A↔B), and Ioff partial-power-down support. It is used in industrial backplane drivers and high-capacitance load interfaces requiring robust noise immunity and ground-bounce control.

For engineers reviewing the CY74FCT16245CTPVCT datasheet, CY74FCT16245CTPVCT pinout, CY74FCT16245CTPVCT application, or CY74FCT16245CTPVCT equivalent, key selection criteria include its 48-pin SSOP package, 5V ±10% supply, industrial temperature range (–40°C to +85°C), and asymmetric output drive optimized for heavy capacitive loads.

Technical Context

This device implements dual 8-bit transceiver blocks (1A/1B and 2A/2B) with independent DIR and OE controls per block. Data flow direction is determined by DIR (LOW = B→A, HIGH = A→B), while OE (active LOW) enables three-state outputs. The Ioff circuitry ensures outputs are disabled when VCC = 0V, preventing backflow current during partial power-down.

It uses standard FCT logic with TTL-compatible inputs (VIH = 2.0V, VIL = 0.8V), edge-rate-controlled outputs to minimize switching noise, and supports bus-isolation via high-impedance outputs. Unlike the H245T variant, it lacks bus-hold circuitry; unlike the 2245T, it does not feature balanced 24-mA drivers.

Key Specifications

Pinout & Package

Package: 48-pin SSOP (O48), 300-mil body width, 0.635 mm pitch, 1.2 mm max height. RoHS-compliant, moisture sensitivity level (MSL) per JEDEC MO-153.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit transceiver applications.

Compared with CY74FCT162245CTPVCT and CY74FCT162H245CTPVCT, the CY74FCT16245CTPVCT delivers superior sink current for driving heavy capacitive loads but lacks bus-hold and balanced drive - making it optimal for fixed, high-C backplane interconnects where ground bounce must be managed without external termination.

Availability

CY74FCT16245CTPVCT is available at Aetrix Electronics and suitable for industrial backplane interfaces, legacy bus extensions, and hot-swappable module carriers requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for CY74FCT16245CTPVCT 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 CY74FCT16245CTPVCT belongs to TI's FCT logic family - engineered for 5V systems demanding high speed, low noise, and robust bus interfacing in factory automation, test equipment, and communications infrastructure.

FAQ

What is the maximum operating frequency supported by CY74FCT16245CTPVCT?

CY74FCT16245CTPVCT has a maximum propagation delay of 4.1 ns (A↔B), supporting reliable operation up to approximately 200 MHz in well-designed 5V bus systems. Actual achievable frequency depends on trace capacitance, loading, and layout - but the device is routinely deployed in 25–50 MHz industrial backplanes with margin.

Does CY74FCT16245CTPVCT include bus-hold circuitry on its inputs?

No, CY74FCT16245CTPVCT does not include bus-hold functionality. That feature is exclusive to the CY74FCT162H245T variant. Inputs on CY74FCT16245CTPVCT must be actively driven or externally terminated to avoid floating states - typical practice uses pull-up or pull-down resistors on unused or intermittently connected lines.

Can CY74FCT16245CTPVCT operate at 3.3V?

No, CY74FCT16245CTPVCT is specified only for VCC = 5V ±10% (4.5V to 5.5V). It is not characterized or guaranteed for 3.3V operation. Attempting to run at 3.3V will result in undefined logic thresholds, degraded noise margins, and potential functional failure - use a 3.3V-compatible transceiver such as SN74LVC16245A for lower-voltage systems.

What is the purpose of the multiple VCC and GND pins on CY74FCT16245CTPVCT?

CY74FCT16245CTPVCT includes four VCC and six GND pins to minimize power distribution impedance and reduce simultaneous switching noise. This layout lowers voltage droop during fast output transitions and provides low-inductance return paths - directly improving ground-bounce performance (VOLP <1.0 V) and signal integrity in high-speed 16-bit parallel interfaces.

Is CY74FCT16245CTPVCT pin-compatible with CY74FCT162245CTPVCT?

Yes, CY74FCT16245CTPVCT and CY74FCT162245CTPVCT share identical 48-pin SSOP (O48) packaging, pinout, and footprint. They are functionally pin-compatible for drop-in replacement in existing designs - though drive strength, ground bounce, and internal circuitry differ, so timing and noise behavior must be re-validated in the target application.