Texas Instruments CY74FCT16244CTPACT

Overview

CY74FCT16244CTPACT from Texas Instruments is a 16-bit non-inverting three-state buffer/line driver designed for high-speed memory and bus interface applications. It delivers 64 mA sink and 32 mA source output drive, supports Ioff partial-power-down protection, operates at 5V ±10%, and achieves 4.1 ns max propagation delay in TSSOP-48 package for industrial temperature range (–40°C to +85°C).

For engineers reviewing the CY74FCT16244CTPACT datasheet, CY74FCT16244CTPACT pinout, CY74FCT16244CTPACT application, or CY74FCT16244CTPACT equivalent, this page provides verified functional identity, confirmed pin mapping, real-world timing and drive specifications, and validated alternative options for bus buffering in backplane and clock distribution systems.

Technical Context

This device implements four independent 4-bit groups of non-inverting buffers, each with dedicated active-low three-state enable (OE) control, enabling flexible 4-bit, 8-bit, or full 16-bit bus operation. Its flow-through pinout minimizes PCB trace skew and simplifies layout in dense interconnect environments.

The CY74FCT16244CTPACT uses FCT logic family architecture with edge-rate control circuitry to suppress switching noise, ensures <250 ps typical output skew across outputs, and incorporates Ioff circuitry that disables outputs and blocks reverse current when VCC = 0 V - critical for hot-swap and partial-power-down systems.

Key Specifications

Pinout & Package

TSSOP-48 (Z48) package: 12.6 mm × 6.2 mm × 1.2 mm max height, 0.5 mm lead pitch, gull-wing leads, JEDEC MO-153 compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit non-inverting buffer applications.

Compared with CY74FCT162244CTPACT and CY74FCT162H244CTPVC, the CY74FCT16244CTPACT uniquely combines highest drive strength (64 mA sink), Ioff protection, and TSSOP thermal efficiency - making it optimal for high-load, hot-pluggable, and space-constrained industrial bus interfaces.

Availability

CY74FCT16244CTPACT is available at Aetrix Electronics and suitable for memory interface design, industrial backplane systems, and programmable logic interconnect applications requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for CY74FCT16244CTPACT 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 experience in high-reliability industrial and automotive IC design.

The CY74FCT16244CTPACT belongs to TI's FCT logic family, engineered specifically for high-speed, low-noise bus interfacing in industrial control, test equipment, and communications infrastructure where timing precision and power sequencing resilience are critical.

FAQ

What is the maximum operating frequency supported by CY74FCT16244CTPACT?

The CY74FCT16244CTPACT has a maximum propagation delay of 4.1 ns, supporting reliable operation in systems with clock periods down to ~8.2 ns - corresponding to a theoretical maximum toggle rate of approximately 120 MHz for single-edge signaling. Actual system frequency depends on board layout, load capacitance, and timing margins, but the device is routinely used in 200-MHz address/data bus applications with appropriate derating.

Does CY74FCT16244CTPACT support hot-swap or partial-power-down operation?

Yes, CY74FCT16244CTPACT includes Ioff circuitry that disables outputs and blocks reverse current flow when VCC = 0 V. This feature allows safe insertion into live backplanes and enables partial-power-down modes in multi-rail systems - a key requirement for industrial PLCs and modular telecom equipment where subsystems power up/down independently.

What is the purpose of the dual VCC and GND pins on CY74FCT16244CTPACT?

CY74FCT16244CTPACT features two VCC pins (pins 24 and 48) and two GND pins (pins 1 and 25) to reduce power delivery inductance and improve noise immunity. This dual-supply-pin configuration lowers IR drop across the package, stabilizes internal rail voltage during fast output transitions, and minimizes ground bounce - especially critical when driving high-capacitance loads or multiple outputs simultaneously.

Can CY74FCT16244CTPACT drive unterminated transmission lines?

Yes, CY74FCT16244CTPACT can drive short-to-medium-length unterminated transmission lines (e.g., ≤15 cm, ≤50 Ω) thanks to its 64 mA sink capability and edge-rate control. However, for longer lines or strict signal integrity requirements, external series termination (e.g., 33 Ω at source) is recommended. The device's low output skew (<250 ps) ensures timing coherence across all 16 bits during such operation.

Is CY74FCT16244CTPACT pin-compatible with other members of the CY74FCT162xx4T family?

Yes, CY74FCT16244CTPACT shares identical pinout and package (TSSOP-48) with CY74FCT162244CTPACT and CY74FCT162H244ATPACT. All three devices use the same flow-through pin assignment for A/Y/OE signals and dual VCC/GND placement. Functional differences (drive strength, Ioff, bus hold) do not affect physical compatibility, enabling drop-in replacement where electrical requirements align.