Texas Instruments CY74FCT162652CTPVC

Overview

CY74FCT162652CTPVC from Texas Instruments is a 16-bit registered transceiver with dual 8-bit bus registers, balanced 24 mA output drivers, I_off partial-power-down support, and 5.4 ns max propagation delay (bus-to-bus) across the industrial temperature range (−40°C to +85°C). It enables bidirectional, clocked data transfer between two 16-bit buses in high-noise environments such as backplane interconnects and transmission-line-driven systems.

For engineers reviewing the CY74FCT162652CTPVC datasheet, CY74FCT162652CTPVC pinout, CY74FCT162652CTPVC application, or CY74FCT162652CTPVC equivalent, key selection criteria include its 24 mA balanced drive strength, sub-0.6 V ground bounce at 5 V, 0.5 ns output skew, TSSOP/SSOP package compatibility, and real-time vs. registered data path control via SAB/SBA pins.

Technical Context

This device implements two independent 8-bit D-type register banks with separate clock inputs (CLKAB/CLKBA), select controls (SAB/SBA), and three-state enable pins (OEAB/OEBA), allowing flexible multiplexed data routing-either live bus pass-through or stored register output. Its edge-rate control circuitry suppresses switching noise without external termination.

The CY74FCT162652CTPVC uses current-limiting resistors integrated into each 24 mA output driver to minimize undershoot and reduce ground bounce (VOLP < 0.6 V at V_CC = 5 V, T_A = 25°C), making it suitable for driving controlled-impedance transmission lines directly. I_off protection disables outputs during power-down to prevent backflow current.

Key Specifications

Pinout & Package

Package: 56-pin SSOP (O56), 300-mil body width, 0.025-inch pitch, 1.2 mm max height - compatible with standard surface-mount reflow processes and IPC-7351 land patterns.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY74FCT16652CTPVC and SN74ALVCH16652DGGR, the CY74FCT162652CTPVC uniquely balances 5 V robustness, transmission-line optimization, and partial-power-down safety-making it the only option among the three qualified for industrial hot-swap and controlled-impedance routing.

Availability

CY74FCT162652CTPVC is available at Aetrix Electronics and suitable for industrial backplane interconnects, protocol bridge interfaces, transmission-line driver circuits, and hot-swappable module interfaces requiring stable component supply across extended temperature and long product lifecycles.

Supply support for CY74FCT162652CTPVC 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 connectivity solutions for industrial, automotive, and communications markets.

The CY74FCT162652CTPVC belongs to TI's FCT logic family-designed specifically for high-speed, low-noise, 5 V bus interface applications demanding robust ESD tolerance (>2000 V), precise timing control, and industrial reliability.

FAQ

What is the maximum operating frequency supported by CY74FCT162652CTPVC?

The CY74FCT162652CTPVC does not specify a maximum clock frequency in its datasheet. Instead, timing is defined by propagation delays: 5.4 ns max bus-to-bus delay and 5.7 ns max clock-to-bus delay at V_CC = 5 V. These values support reliable operation up to approximately 100 MHz in well-designed systems with proper layout and termination. System-level timing margins must account for board trace delays and setup/hold requirements of connected devices.

Does CY74FCT162652CTPVC support 3.3 V logic levels?

No, CY74FCT162652CTPVC is a 5 V-only device with V_CC = 5 V ± 10% and input thresholds defined for TTL-compatible levels (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V). It is not 3.3 V tolerant-applying 3.3 V signals to inputs may result in marginal HIGH recognition, and driving 3.3 V receivers requires external level-shifting or voltage translation circuitry.

How does the I_off feature function in CY74FCT162652CTPVC?

In CY74FCT162652CTPVC, the I_off circuitry automatically disables all outputs when V_CC = 0 V, preventing current backflow from live bus lines into the unpowered device. This protects both the transceiver and connected circuitry during partial-power-down or hot-swap events. The feature operates independently of OEAB/OEBA states and requires no external control signals.

Can CY74FCT162652CTPVC operate in real-time mode without using internal registers?

Yes, CY74FCT162652CTPVC supports real-time pass-through mode when SAB and SBA are held LOW. In this configuration, data flows transparently between A and B buses without latching-provided OEAB and OEBA are asserted. This mode bypasses the D-type registers entirely, reducing latency to the specified 5.4 ns propagation delay.

What package variants are available for CY74FCT162652CTPVC?

CY74FCT162652CTPVC is offered exclusively in the 56-pin SSOP (O56) package-300-mil body width, 0.025-inch pitch. While other members of the CY74FCT162652 family (e.g., 74FCT162652CTPACT) use the 56-pin TSSOP (Z56), the CY74FCT162652CTPVC variant is SSOP-only per TI's official ordering information and package diagrams.