Texas Instruments 74FCT162652ATPVCG4

Overview

74FCT162652ATPVCG4 from Texas Instruments is a 16-bit registered transceiver organized as two independent 8-bit bus transceivers with three-state D-type registers, 5V ±10% supply, 6.3 ns max propagation delay (bus-to-bus), 24 mA balanced output drive, and industrial −40°C to +85°C operation - used for bidirectional data routing in high-speed backplane and transmission-line interfaces.

For engineers reviewing the 74FCT162652ATPVCG4 datasheet, 74FCT162652ATPVCG4 pinout, 74FCT162652ATPVCG4 application, or 74FCT162652ATPVCG4 equivalent, key selection criteria include Ioff-enabled partial-power-down support, <0.6 V typical ground bounce at 5 V, edge-rate controlled outputs for noise reduction, and TSSOP-56 package compatibility with dense PCB layouts.

Technical Context

This device implements dual 8-bit registered transceiver logic with separate clock inputs (CLKAB/CLKBA), data source select pins (SAB/SBA), and output enables (OEAB/OEBA), enabling real-time or stored-data transfer between A and B buses. It supports simultaneous storage on clock edges regardless of enable or select states.

The 74FCT162652ATPVCG4 uses current-limiting resistors in 24 mA balanced drivers to minimize undershoot and ground bounce, eliminating need for external termination on transmission lines. Its Ioff circuitry disables outputs during power-down to prevent backflow current.

Key Specifications

Pinout & Package

74FCT162652ATPVCG4 is housed in a 56-lead TSSOP (Thin Shrunk Small Outline Package), 240-mil body width, 0.5 mm pitch, 1.2 mm max height (TI package code Z56), with exposed pad not present and moisture sensitivity level (MSL) per JEDEC standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY74FCT162652ATPVC, the 74FCT162652ATPVCG4 offers smaller PCB area and improved thermal response; compared with 74FCT162652CTPACT, it trades 0.9 ns of speed for lower dynamic power and relaxed timing closure in cost-sensitive industrial designs.

Availability

74FCT162652ATPVCG4 is available at Aetrix Electronics and suitable for industrial PLC backplanes, high-speed test equipment interfaces, and transmission-line data routing requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for 74FCT162652ATPVCG4 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 delivering analog, embedded processing, and logic solutions with emphasis on reliability, industrial qualification, and long-term product support.

The 74FCT162652ATPVCG4 belongs to TI's FCT logic family - designed specifically for high-speed, low-noise, industrial-grade bus interface applications where signal integrity and power-down safety are critical.

FAQ

What is the maximum clock frequency supported by the 74FCT162652ATPVCG4?

The 74FCT162652ATPVCG4 does not specify a maximum clock frequency in its datasheet; instead, it guarantees timing margins via propagation delays (6.3 ns max bus-to-bus) and setup/hold requirements (2.0 ns setup, 1.5 ns hold). System-level maximum frequency depends on board trace length, load capacitance, and timing budget - typically supports reliable operation up to 80–100 MHz in well-designed 50 Ω transmission-line layouts. The 74FCT162652ATPVCG4 is optimized for deterministic timing rather than raw clock rate.

Does the 74FCT162652ATPVCG4 support hot-swap operation?

Yes, the 74FCT162652ATPVCG4 supports hot-swap operation through its Ioff feature: when VCC = 0 V, all outputs are disabled and high-impedance, preventing current backflow from live bus lines into the unpowered device. This protects both the 74FCT162652ATPVCG4 and upstream drivers during insertion or removal in powered systems - a key requirement for modular backplane and PLC I/O architectures.

How does the 74FCT162652ATPVCG4 differ from the CY74FCT16652T series?

The 74FCT162652ATPVCG4 features balanced 24 mA output drivers with integrated current-limiting resistors, yielding <0.6 V typical ground bounce and reduced transmission-line ringing. In contrast, the CY74FCT16652T provides asymmetric 64 mA sink / 32 mA source drive, targeting high-capacitance loads like backplanes but requiring external termination. Both share identical pinout and control logic, but the 74FCT162652ATPVCG4 is optimized for impedance-controlled routing, while CY74FCT16652T suits stub-loaded buses.

Can the 74FCT162652ATPVCG4 operate at 3.3 V?

No, the 74FCT162652ATPVCG4 is specified only for VCC = 5 V ±10% (4.5 V to 5.5 V). Its input thresholds (VIH = 2.0 V, VIL = 0.8 V), output drive strength, and timing parameters are characterized exclusively at 5 V. Operating at 3.3 V violates absolute maximum ratings, risks undefined logic states, and voids timing guarantees - use TI's ALVC or LVC families for 3.3 V registered transceivers.

What package variant is indicated by "G4" in 74FCT162652ATPVCG4?

The "G4" suffix in 74FCT162652ATPVCG4 denotes Texas Instruments' packaging and assembly variant code, indicating the device is assembled in a TSSOP-56 package (Z56) with lead finish NiPdAu, RoHS-compliant materials, and MSL-1 reflow profile. It is functionally and electrically identical to 74FCT162652ATPACT but reflects TI's internal manufacturing revision and environmental compliance tracking - no performance or pinout differences exist between G4 and non-G4 variants of the same base part number.