Diodes Incorporated PI74FCT16245ATVE

Overview

PI74FCT16245ATVE from Pericom Semiconductor is a 16-bit bidirectional CMOS transceiver in 48-pin SSOP (V) package, operating at 5V ±10%, with high-current drive (–32mA IOH / 64mA IOL), power-off disable for live insertion, and <1.0V typical output ground bounce. It enables asynchronous two-way data bus communication in backplane and board-level interconnect applications.

For engineers reviewing the PI74FCT16245ATVE datasheet, PI74FCT16245ATVE pinout, PI74FCT16245ATVE application, or PI74FCT16245ATVE equivalent, key selection criteria include direction-controlled bidirectional flow, 3-state enable logic (active-low OE), ±24mA balanced drive capability (shared with PI74FCT162245T variants), and compatibility with 5V TTL/CMOS logic families.

Technical Context

This device implements dual 8-bit or single 16-bit bidirectional data transfer using separate direction (xDIR) and output enable (xOE) controls per port pair. Its Fast CMOS architecture delivers propagation delays as low as 1.5ns (min) and 4.1ns (max) under 50pF load, with guaranteed output skew ≤0.5ns across all outputs switching in the same direction.

The transceiver integrates hysteresis on all inputs for noise immunity, supports live insertion via power-off disable (±100µA leakage when VCC = 0V), and features controlled edge rates to minimize ground bounce and undershoot-critical for high-density PCBs and backplane drivers.

Key Specifications

Pinout & Package

PI74FCT16245ATVE uses a 48-pin 300-mil wide plastic SSOP (Package Code V), RoHS-compliant and green-qualified. Pin layout supports dual 8-bit ports (Port 1: A0–A7/B0–B7; Port 2: A8–A15/B8–B15) with shared directional and enable controls per port group.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PI74FCT162245ATVE, the PI74FCT16245ATVE offers higher sink current for driving heavier loads, while the 74FCT16245CTVE trades industrial temperature rating and speed for lower cost-making the ATVE variant optimal for ruggedized 5V bus bridging where drive strength and thermal reliability are prioritized.

Availability

PI74FCT16245ATVE is available at Aetrix Electronics and suitable for backplane routing, industrial PLC expansion, telecom line card interfacing, and ATE bus arbitration requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for PI74FCT16245ATVE 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

Pericom Semiconductor was a fabless provider of high-speed interface, timing, and signal integrity solutions, acquired by Diodes Incorporated in 2016; its legacy logic portfolio remains widely deployed in industrial and telecom infrastructure.

The PI74FCT16245 series belongs to Pericom's Fast CMOS logic family, engineered specifically for robust 5V bus bridging in backplane, rack-mount, and modular embedded systems demanding live insertion and low-noise operation.

FAQ

What is the maximum clock/data rate supported by PI74FCT16245ATVE?

The device does not operate on a clock; it is asynchronous. Its 1.5ns minimum propagation delay and 4.1ns maximum (at 50pF load) support reliable data handshaking up to approximately 200MHz effective toggle rate. System-level timing depends on PCB trace length, termination, and load capacitance-designers should verify setup/hold margins using worst-case tPHL/tPLH values from the datasheet.

Can PI74FCT16245ATVE interface directly with 3.3V logic devices?

No-PI74FCT16245ATVE is a 5V-only device with VIH(min) = 2.0V and VIL(max) = 0.8V, making it compatible with TTL and 5V CMOS inputs, but not guaranteed for direct connection to 3.3V logic outputs without level translation. Driving 3.3V inputs may exceed their absolute maximum input voltage rating; use a dedicated level shifter or voltage-tolerant buffer for mixed-voltage systems.

How does the power-off disable feature work during live insertion?

When VCC drops to 0V, internal circuitry limits I/O pin leakage to ±100µA regardless of applied signal voltage (up to 4.5V), preventing backfeeding into unpowered sections of the backplane. This allows safe mechanical insertion/removal while other slots remain active-no external isolation switches or sequencing circuitry required.

Are the 1DIR/2DIR and 1OE/2OE pins internally connected or fully independent?

They are fully independent: 1DIR and 1OE control only Port 1 (A0–A7/B0–B7), while 2DIR and 2OE control Port 2 (A8–A15/B8–B15). This allows simultaneous operation in different modes-for example, Port 1 configured as A→B while Port 2 operates as B→A-or independent 3-state control for bus segmentation in complex interconnect topologies.