Texas Instruments 74FCT16240ATPVCG4

Overview

74FCT16240ATPVCG4 from Texas Instruments is a 16-bit non-inverting three-state buffer/line driver IC designed for high-speed bus interface applications including memory drivers and clock distribution. It delivers 64 mA sink / 32 mA source drive capability, supports partial-power-down via I_OFF, operates at 5V ±10%, and features typical output skew <250 ps. It is used in industrial backplane and high-capacitance load driving systems.

For engineers reviewing the 74FCT16240ATPVCG4 datasheet, 74FCT16240ATPVCG4 pinout, 74FCT16240ATPVCG4 application, or 74FCT16240ATPVCG4 equivalent, key selection criteria include its 4.8 ns max propagation delay, flow-through pinout architecture, SSOP-48 package compatibility, and I_OFF-enabled power-down protection for mixed-voltage system interfacing.

Technical Context

This device implements dual 8-bit non-inverting buffers with independent active-low three-state enable controls (1OE, 2OE, 3OE, 4OE), enabling flexible 4-, 8-, or 16-bit bus operation. Its I_OFF circuitry disables outputs when V_CC = 0 V, preventing current backflow during partial power-down.

The 74FCT16240ATPVCG4 uses FCT logic family design with edge-rate control to suppress switching noise and ground bounce (typical V_OLP <1.0 V at 5 V, 25 °C). It is fully specified for industrial temperature range (–40 °C to +85 °C) and meets >2000 V HBM ESD rating.

Key Specifications

Pinout & Package

74FCT16240ATPVCG4 is housed in a 48-pin SSOP (Shrink Small Outline Package), 300-mil body width, 25-mil lead pitch, JEDEC MO-153 compliant, with 1.2 mm max height and gull-wing leads. Pin 1 marked by notch or dot; pinout follows flow-through architecture to minimize PCB trace crossovers.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY74FCT162240T, 74FCT16240ATPVCG4 provides higher sink current for backplane loading but higher ground bounce; compared with SN74FCT16240A, it shares identical functionality but differs in branding, sourcing channel, and obsolescence status-TI's version offers guaranteed long-term supply and updated quality documentation.

Availability

74FCT16240ATPVCG4 is available at Aetrix Electronics and suitable for industrial control systems, telecommunications infrastructure, and legacy computing hardware requiring stable component supply and verified 5-V bus interface performance.

Supply support for 74FCT16240ATPVCG4 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 ICs.

The 74FCT16240ATPVCG4 belongs to TI's FCT logic family, engineered for high-speed, low-noise 5-V bus interfacing in industrial and communications equipment where timing integrity and power-down safety are critical.

FAQ

What is the maximum operating frequency supported by the 74FCT16240ATPVCG4?

The 74FCT16240ATPVCG4 does not specify a maximum clock frequency directly, but its 4.8 ns maximum propagation delay supports reliable operation in bus systems with signal periods ≥10 ns-equivalent to effective data rates up to ~100 MHz for single-data-rate interfaces. System-level timing must account for board trace delays, load capacitance, and setup/hold margins at the receiving device.

Does the 74FCT16240ATPVCG4 support mixed-voltage operation (e.g., 3.3-V inputs with 5-V V_CC)?

The 74FCT16240ATPVCG4 accepts TTL-compatible input thresholds (V_IL ≤0.8 V, V_IH ≥2.0 V) and is designed for 5-V V_CC. While 3.3-V logic outputs may meet VIH/VIL thresholds, TI does not guarantee interoperability with 3.3-V systems without level translation. For robust mixed-voltage interfacing, use dedicated level shifters or FCT-family variants explicitly rated for 3.3-V input tolerance.

How does the I_OFF feature of the 74FCT16240ATPVCG4 protect downstream circuitry?

The I_OFF circuitry in the 74FCT16240ATPVCG4 disables all outputs when V_CC = 0 V, limiting leakage current to ±1 µA per pin even if input or output pins are driven externally. This prevents reverse current flow into a powered-down device, eliminating risk of latch-up, bus contention, or damage to upstream drivers in hot-swap or partial-power-down configurations.

Can the 74FCT16240ATPVCG4 replace the CY74FCT162240T in an existing design?

The 74FCT16240ATPVCG4 is not a drop-in replacement for CY74FCT162240T due to differing output drive strengths (64/32 mA vs. balanced 24 mA) and ground bounce characteristics. Swapping requires validation of load drive capability, signal integrity, and timing margins-especially in transmission-line applications where CY74FCT162240T's current-limiting resistors reduce undershoot.

What package type and dimensions does the 74FCT16240ATPVCG4 use?

The 74FCT16240ATPVCG4 uses a 48-pin SSOP (Shrink Small Outline Package) with 300-mil body width and 25-mil lead pitch (JEDEC MO-153). Its mechanical outline measures 12.6 mm × 6.2 mm × 1.2 mm max height, with gull-wing leads and dual V_CC/GND pins positioned for optimal power delivery and noise suppression.