Diodes Incorporated PI74FCT162245TAE

Overview

PI74FCT162245TAE from Pericom Semiconductor is a 16-bit bidirectional CMOS transceiver with ±24mA balanced output drivers, 5V supply operation, and 48-pin TSSOP (A) package. It enables asynchronous two-way data bus communication between A- and B-side buses, supports dual 8-bit or single 16-bit configuration via DIR/OE controls, and reduces ground bounce (<0.6V typical) for high-noise-immunity backplane and motherboard interconnects.

For engineers reviewing the PI74FCT162245TAE datasheet, PI74FCT162245TAE pinout, PI74FCT162245TAE application, or PI74FCT162245TAE equivalent, key selection criteria include bidirectional flow control timing (tPZH/tPHZ ≤9.5ns), low-skew outputs (TSK(O) ≤0.5ns), ±24mA drive capability, and compatibility with 5V TTL/CMOS logic families in space-constrained PCB layouts.

Technical Context

The PI74FCT162245TAE implements dual independent 8-bit transceiver sections (1A/1B and 2A/2B), each controlled by dedicated DIR and OE inputs. Direction is determined per section by XDIR, while XOE places both ports in high-impedance state when HIGH.

All inputs feature hysteresis (100mV), enabling robust noise rejection in electrically noisy environments. Output edge rates are internally controlled via integrated current-limiting resistors-eliminating external termination and reducing simultaneous switching noise without sacrificing propagation delay (tPHL ≤7.0ns at CL=50pF).

Key Specifications

Pinout & Package

PI74FCT162245TAE uses a 48-pin plastic thin shrink small-outline package (TSSOP-A), 240-mil wide, with exposed pad not present and JEDEC-standard pin numbering. Pin 1 is located at top-left corner with dot marking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74FCT162245CPAG and 74FCT162245CTPV, the PI74FCT162245TAE offers identical functionality in a narrower TSSOP-A footprint-reducing board area by 22% versus SSOP-while maintaining the optimal balance of drive strength, noise suppression, and thermal performance for high-density industrial backplanes.

Availability

PI74FCT162245TAE is available at Aetrix Electronics and suitable for industrial PLC backplanes, automated test equipment interfaces, legacy system upgrades, and high-reliability embedded bus architectures requiring stable component supply and long-term lifecycle support.

Supply support for PI74FCT162245TAE 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 products target enterprise, industrial, and communications infrastructure markets.

The PI74FCT162245TAE belongs to the FCT16xx family of 16-bit CMOS transceivers designed specifically for low-noise, high-drive bidirectional bus interfacing in space-constrained, thermally demanding environments.

FAQ

What is the maximum clock/data rate supported by PI74FCT162245TAE?

The device does not operate on a clock; it is asynchronous. Its 7.0ns maximum propagation delay (tPHL) at 50pF load supports reliable data transfer up to ~100MHz in well-terminated parallel bus systems. Actual achievable rate depends on trace length, loading, and system timing margins-not an internal clock frequency.

Can PI74FCT162245TAE be used with 3.3V logic systems?

No. It is strictly a 5V-only device: VCC must be 5.0V ±10%, and input thresholds (VIH=2.0V, VIL=0.8V) are optimized for 5V TTL/CMOS levels. Driving it from 3.3V sources risks marginal VIH recognition; connecting its 5V outputs to 3.3V-only inputs may damage downstream components without level translation.

Does PI74FCT162245TAE support live insertion or hot-swap?

Unlike the PI74FCT16245T variant, the PI74FCT162245TAE does not specify power-off disable functionality. Its outputs do not enter Hi-Z when VCC = 0V. Therefore, it is not rated for live insertion-power sequencing must ensure VCC is stable before asserting DIR or OE signals to prevent bus contention.

How many PI74FCT162245TAE devices can drive a single 50pF bus load?

Each output drives ≤50pF per specification. With typical COUT = 5.5pF and CIN = 4.5pF, one PI74FCT162245TAE contributes ~11pF per active line. Thus, up to four devices (4 × 16 = 64 lines) can share a 50pF net before exceeding recommended capacitive loading-assuming no additional trace or receiver capacitance.