Texas Instruments CY74FCT162245TPVCT

Overview

CY74FCT162245TPVCT from Texas Instruments is a 16-bit non-inverting bus transceiver with balanced 24-mA output drivers, designed for bidirectional synchronous communication between two buses in high-speed digital systems. It operates at 5V ±10%, supports industrial temperature range (–40°C to +85°C), features Ioff partial-power-down protection, and is optimized for driving transmission lines with reduced ground bounce (<0.6V typical).

For engineers reviewing the CY74FCT162245TPVCT datasheet, CY74FCT162245TPVCT pinout, CY74FCT162245TPVCT application, or CY74FCT162245TPVCT equivalent, key selection criteria include its 24-mA balanced drive strength, 4.5-ns max propagation delay (A↔B), 6.2-ns max OE enable time, and SSOP-48 package compatibility with legacy 300-mil footprint designs.

Technical Context

This device implements dual-octal or unified 16-bit bidirectional data flow controlled by DIR (direction) and active-low OE (output enable). Its edge-rate control circuitry limits switching noise, while Ioff circuitry disables outputs during power-down to prevent backflow current when VCC = 0V.

The CY74FCT162245TPVCT uses TTL-compatible input thresholds (VIH = 2.0V min, VIL = 0.8V max), delivers VOH ≥ 2.4V at –24 mA, VOL ≤ 0.55V at 24 mA, and exhibits typical output skew < 250 ps - critical for timing-critical bus interfaces requiring tight signal alignment.

Key Specifications

Pinout & Package

Package: 48-pin SSOP (O48), 300-mil body width, 0.025-inch pitch, 1.2-mm max height - compatible with legacy surface-mount assembly processes and reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY74FCT16245TPVCT and CY74FCT162H245TPVCT, the CY74FCT162245TPVCT offers optimal balance of line-driving capability, low noise, and minimal external component count - making it the preferred choice for controlled-impedance transmission line interfaces where ground bounce and EMI must be minimized.

Availability

CY74FCT162245TPVCT is available at Aetrix Electronics and suitable for industrial backplane interconnect, PCI bus extension, and memory expansion subsystems requiring stable component supply and long-term lifecycle continuity.

Supply support for CY74FCT162245TPVCT 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 and embedded processing solutions for industrial, automotive, and personal electronics markets.

The CY74FCT162245TPVCT belongs to TI's FCT logic family - engineered for high-speed, low-noise 5-V TTL-compatible bus interfacing in industrial and communications infrastructure applications.

FAQ

What is the maximum operating frequency supported by CY74FCT162245TPVCT?

CY74FCT162245TPVCT supports reliable operation up to approximately 220 MHz, derived from its 4.5-ns maximum propagation delay (A↔B) and 6.2-ns maximum output-enable time. This allows use in 33-MHz PCI, 20-MHz ISA, and custom high-speed parallel interfaces where timing margins must accommodate worst-case skew and board trace delays. The device does not include internal clocking or PLL circuitry - frequency capability depends entirely on external system timing design.

Does CY74FCT162245TPVCT have bus-hold functionality on its inputs?

No, CY74FCT162245TPVCT does not include bus-hold circuitry. Unlike CY74FCT162H245TPVCT, this part requires externally biased inputs (e.g., pull-up or pull-down resistors) when disconnected or floating. Input leakage remains low (±1 µA), but undefined logic states may occur without proper termination - a key differentiator confirmed in the functional description and pin table notes.

Can CY74FCT162245TPVCT operate at 3.3V supply voltage?

No, CY74FCT162245TPVCT is specified only for VCC = 5V ±10% (4.5V to 5.5V). Its input thresholds (VIH = 2.0V min, VIL = 0.8V max), output drive characteristics, and internal biasing are optimized for 5-V TTL compatibility. Operation below 4.5V violates absolute maximum ratings and risks failure to meet VOH/VOL specs or enable/disable timing guarantees.

What package type is used for CY74FCT162245TPVCT?

CY74FCT162245TPVCT uses a 48-pin SSOP (Shrink Small Outline Package) with 300-mil body width and 0.025-inch lead pitch (O48 designation). This package matches JEDEC MO-153 standards, has 1.2-mm maximum height, and is compatible with standard SMT reflow profiles - distinct from the TSSOP (Z48) variant used in CY74FCT162245TPACT.

How does the Ioff feature function in CY74FCT162245TPVCT?

The Ioff feature in CY74FCT162245TPVCT disables all outputs when VCC = 0V, preventing damaging current backflow from live buses into the unpowered device. This is achieved via internal circuitry that forces outputs into high-impedance state regardless of DIR or OE logic levels - enabling safe partial-power-down operation in modular systems and hot-swap backplanes without external isolation components.