Texas Instruments 74FCT162H245ATPVC

Overview

74FCT162H245ATPVC from Texas Instruments is a 16-bit bidirectional bus transceiver with bus-hold inputs, 24-mA balanced output drivers, 4.5-ns max propagation delay (A-to-B/B-to-A), and industrial temperature range (–40°C to +85°C). It enables noise-resilient data transfer between two synchronous buses in memory expansion and backplane interface applications.

For engineers reviewing the 74FCT162H245ATPVC datasheet, 74FCT162H245ATPVC pinout, 74FCT162H245ATPVC application, or 74FCT162H245ATPVC equivalent, key selection criteria include bus-hold functionality eliminating external pull resistors, Ioff support for partial-power-down operation, edge-rate controlled outputs for reduced ground bounce (<0.6 V), and SSOP-48 packaging compatible with high-density PCB layouts.

Technical Context

This device operates as a dual-octal or unified 16-bit transceiver, with direction control via DIR and three-state enable via active-low OE. Its bus-hold circuitry actively retains the last valid logic state on all A- and B-side data inputs when floating, preventing undefined states without external biasing.

It features Ioff protection that disables outputs during power-down to block reverse current flow, and edge-rate control circuitry that limits slew rate-reducing simultaneous switching noise and ground bounce. Output skew is guaranteed ≤0.5 ns across all channels under identical switching conditions.

Key Specifications

Pinout & Package

74FCT162H245ATPVC is housed in a 48-pin SSOP (Shrink Small Outline Package), 300-mil body width, 0.025-inch pitch, JEDEC MO-153 compliant, with 1.2-mm max height and gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74FCT162H245ATPVC, the 74FCT162245ATPVC saves component cost but increases layout complexity, while SN74LVC16245ADGGR offers smaller footprint and lower voltage operation at the expense of 5-V interoperability and system-level noise resilience.

Availability

74FCT162H245ATPVC is available at Aetrix Electronics and suitable for industrial backplane interconnect, memory expansion interface, and FPGA-to-ASIC bridge logic requiring stable component supply, long-term lifecycle support, and verified SSOP-48 sourcing.

Supply support for 74FCT162H245ATPVC 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 specializing in analog, embedded processing, and logic solutions, with decades of experience in high-reliability industrial and automotive-grade IC design.

The 74FCT162H245ATPVC belongs to TI's FCT logic family, engineered for noise-immune, high-speed 5-V bus interfacing in mission-critical industrial systems where signal integrity and power sequencing robustness are essential.

FAQ

What is the maximum propagation delay specification for 74FCT162H245ATPVC?

The 74FCT162H245ATPVC has a maximum propagation delay of 4.5 ns for data transfer in either direction (A-to-B or B-to-A) across the full industrial temperature range (–40°C to +85°C) at VCC = 5 V. This value is specified in the "Switching Characteristics" table of the official TI datasheet SCCS026B and applies to both octal sections when operated as a unified 16-bit transceiver.

Does 74FCT162H245ATPVC support partial-power-down operation?

Yes, 74FCT162H245ATPVC supports partial-power-down operation via its Ioff circuitry. When VCC = 0 V, the outputs are disabled and leakage current is limited to ±1 µA, preventing damaging reverse current flow from live buses into the unpowered device - a critical feature for hot-swap and multi-rail power sequencing in industrial systems.

How does the bus-hold function work on 74FCT162H245ATPVC?

The 74FCT162H245ATPVC integrates bus-hold circuitry on all 32 data I/O pins (A1–A16 and B1–B16). When an input floats, the internal feedback network sustains the last valid logic state using ±50 µA of hold current - eliminating the need for external pull-up or pull-down resistors and preventing metastability in un-driven bus segments.

What package type and dimensions does 74FCT162H245ATPVC use?

74FCT162H245ATPVC uses a 48-pin SSOP (Shrink Small Outline Package) with 300-mil body width and 0.025-inch lead pitch (JEDEC MO-153 compliant). Its mechanical outline matches TI's DL package designation, with 12.6 mm × 6.2 mm footprint, 1.2 mm max height, and gull-wing leads suitable for standard SMT reflow processes.

Can 74FCT162H245ATPVC be used in place of 74FCT162245ATPVC?

74FCT162H245ATPVC can replace 74FCT162245ATPVC in most applications due to identical timing, drive strength, and pinout - but adds bus-hold functionality. No PCB changes are required; however, the bus-hold feature may alter behavior in circuits relying on explicit pull resistors, so validation of input biasing strategy is recommended before drop-in substitution.