Texas Instruments 74FCT162240ATPACT

Overview

74FCT162240ATPACT from Texas Instruments is a 16-bit non-inverting 3-state buffer/line driver IC with balanced 24-mA output drivers, I_OFF partial-power-down support, and flow-through pinout in 48-lead TSSOP (DGG) package. It operates at 5V ±10%, delivers <0.6V ground bounce at 25°C, and achieves 4.3 ns max propagation delay for high-speed bus interface applications including memory address/data buffering and transmission-line driving.

For engineers reviewing the 74FCT162240ATPACT datasheet, 74FCT162240ATPACT pinout, 74FCT162240ATPACT application, or 74FCT162240ATPACT equivalent, key selection criteria include its 24-mA balanced drive strength, I_OFF current limiting during power-down, industrial temperature range (–40°C to +85°C), and TSSOP-48 package compatibility with high-density PCB layouts.

Technical Context

This device implements dual 8-bit sections (A/B and C/D), each with independent active-low 3-state enable inputs (1OE–4OE), enabling flexible 4-, 8-, or 16-bit bus control. Its edge-rate controlled outputs suppress system switching noise without external termination resistors.

The I_OFF circuitry ensures outputs enter high-impedance state when V_CC = 0 V, blocking damaging backflow current into powered-down systems. Output skew is guaranteed ≤250 ps, supporting synchronous timing across all 16 outputs.

Key Specifications

Pinout & Package

48-pin Thin Shrink Small Outline Package (TSSOP, DGG), 0.5-mm pitch, 12.5 mm × 6.1 mm footprint, 1.2 mm max height, JEDEC MO-153 compliant. Pin 1 marked with dot; pin 1 ID area located at top-left corner of package top view.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit buffer/line driver applications.

Compared with CY74FCT162240CTPVC and 74FCT16240ATPACT, the 74FCT162240ATPACT offers optimal balance of compact TSSOP packaging, low-noise 24-mA drive, and built-in current limiting-making it preferred for new designs prioritizing EMI control and board density.

Availability

74FCT162240ATPACT is available at Aetrix Electronics and suitable for industrial control systems, programmable logic interfaces, high-speed clock distribution networks, and memory subsystems requiring stable component supply and long-term lifecycle support.

Supply support for 74FCT162240ATPACT 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 over 90 years of innovation in industrial, automotive, and communications markets.

The FCT logic family-including the 74FCT162240ATPACT-is engineered for high-speed, low-noise bus interfacing in industrial and telecom infrastructure where reliability, timing precision, and power-down safety are critical.

FAQ

What is the maximum operating frequency supported by the 74FCT162240ATPACT?

The 74FCT162240ATPACT achieves a maximum propagation delay of 4.3 ns, enabling reliable operation at bus frequencies exceeding 200 MHz in well-terminated systems. Its low output skew (<250 ps) and balanced drive ensure deterministic timing alignment across all 16 outputs, making the 74FCT162240ATPACT suitable for high-speed memory addressing and clock fanout applications where cycle-to-cycle jitter must remain below 1%.

Does the 74FCT162240ATPACT support hot-swap or partial-power-down operation?

Yes, the 74FCT162240ATPACT integrates I_OFF circuitry that disables outputs and limits reverse current to ±1 µA when V_CC = 0 V. This feature allows safe insertion or removal of boards in live backplanes and supports controlled power sequencing in multi-rail systems. The 74FCT162240ATPACT is explicitly specified for partial-power-down applications per TI's FCT family design guidelines.

What package type and dimensions does the 74FCT162240ATPACT use?

The 74FCT162240ATPACT uses a 48-pin Thin Shrink Small Outline Package (TSSOP, DGG) with 0.5-mm pitch, 12.5 mm × 6.1 mm body size, and 1.2 mm maximum height. It complies with JEDEC MO-153 and features dual V_CC (pins 24, 48) and dual GND (pins 1, 25) for improved power integrity. The 74FCT162240ATPACT's compact footprint supports high-density routing in space-constrained industrial and telecom PCBs.

How does the 74FCT162240ATPACT differ from the 74FCT16240ATPACT in terms of drive capability and noise performance?

The 74FCT162240ATPACT provides balanced ±24-mA output drive with integrated current-limiting resistors, resulting in <0.6V ground bounce and reduced system switching noise. In contrast, the 74FCT16240ATPACT delivers higher 64-mA sink / 32-mA source drive but exhibits up to 1.0V ground bounce and requires external termination. The 74FCT162240ATPACT is optimized for low-EMI transmission-line driving, whereas the 74FCT16240ATPACT targets high-capacitance loads.

Is the 74FCT162240ATPACT pin-compatible with other members of the CY74FCT162xxT family?

Yes, the 74FCT162240ATPACT shares identical pinout and functional architecture with CY74FCT162240T variants (e.g., CY74FCT162240CTPVC), including matching 1OE–4OE enables, A/Y signal mapping, and dual V_CC/GND placement. All devices in the CY74FCT162240T family maintain consistent flow-through pin assignment across TSSOP and SSOP packages, allowing direct substitution where package constraints permit.