NXP Semiconductors 74ALVT162823DGG:11

Overview

74ALVT162823DGG from Nexperia is an 18-bit bus-interface D-type flip-flop with dual 9-bit registers, 3-state outputs, master reset (nMR), clock enable (nCE), and integrated 30 Ω series output termination. It operates at 2.5 V or 3.3 V supply, delivers ±12 mA drive strength, and supports high-speed memory address and parity bus interfacing in microprogrammed systems.

For engineers reviewing the 74ALVT162823DGG datasheet, 74ALVT162823DGG pinout, 74ALVT162823DGG application, or 74ALVT162823DGG equivalent, this device is selected for low-noise bus driving, live insertion capability, power-up 3-state behavior, and bus-hold inputs eliminating external pull-ups in industrial computing and embedded control designs.

Technical Context

The 74ALVT162823DGG implements two independent, positive edge-triggered 9-bit register banks, each with dedicated clock (nCP), master reset (nMR), clock enable (nCE), and output enable (nOE) controls. Its dual-register architecture enables synchronized latching of wide data paths-e.g., 9-bit parity + 9-bit data-without external buffering.

Each output integrates 30 Ω series resistance in both pull-up and pull-down paths, suppressing transmission-line reflections in point-to-point or stubbed bus topologies. Bus-hold circuitry on all data inputs maintains valid logic states during floating conditions, supporting hot-plug operation and reducing system-level component count.

Key Specifications

Pinout & Package

TSSOP56 package (SOT364-1): plastic thin shrink small outline, 56 leads, body width 6.1 mm, lead pitch 0.5 mm, maximum height 1.2 mm - optimized for space-constrained PCB layouts and automated assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bus-interface flip-flop applications.

Compared with 74ALVT162823DGG, the DL variant trades compactness for thermal mass, while the SN74ALVTH162823DGGR adds Ioff but increases quiescent current - selection depends on footprint constraints, thermal design, and isolation requirements.

Availability

74ALVT162823DGG is available at Aetrix Electronics and suitable for industrial computing, embedded control, and high-reliability memory interface applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for 74ALVT162823DGG 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

Nexperia is a global leader in discrete, logic, and power MOSFET semiconductors, spun off from NXP's Standard Products division in 2017 and focused on automotive, industrial, and computing markets.

The 74ALVT162823DGG belongs to Nexperia's advanced logic portfolio designed for high-speed, low-noise bus interfacing in mission-critical embedded systems where signal integrity, thermal robustness, and long-term supply stability are essential.

FAQ

What is the maximum clock frequency supported by the 74ALVT162823DGG?

The 74ALVT162823DGG does not specify a maximum clock frequency in its datasheet, but its propagation delay (tPLH/tPHL) is 2.9 ns / 2.3 ns at 3.3 V and 50 pF load. Based on these values, reliable operation up to approximately 300 MHz is achievable in well-terminated systems. System-level timing margins must account for setup/hold times and board-level signal integrity.

Does the 74ALVT162823DGG support mixed-voltage operation between 2.5 V and 3.3 V domains?

Yes, the 74ALVT162823DGG is explicitly rated for both 2.5 V and 3.3 V supply operation, with full logic-level compatibility across that range. Input thresholds (VIH/VIL) scale accordingly, and output drive strength (±12 mA) is guaranteed at both voltages - enabling seamless interfacing between 2.5 V and 3.3 V ASIC/FPGA subsystems.

How does the bus-hold feature work on the 74ALVT162823DGG data inputs?

The 74ALVT162823DGG incorporates active bus-hold circuitry on all D-inputs (1D0–1D8, 2D0–2D8), which applies weak feedback to maintain the last valid logic state when the input is un-driven. At VCC = 3 V, it sources or sinks up to ±130 µA - sufficient to override typical leakage but low enough to be overdriven cleanly by upstream drivers.

Is the 74ALVT162823DGG pin-compatible with other members of the ALVT16xxx family?

No - the 74ALVT162823DGG has a unique 56-pin TSSOP footprint and dual-register architecture with separate nMR/nCE/nOE controls per 9-bit bank. It is not pin-compatible with standard 16-bit ALVT registers like the 74ALVT162244 or 74ALVT16373, which use different pin assignments and functional partitioning.

What is the purpose of the 30 Ω series resistance in the 74ALVT162823DGG outputs?

The 30 Ω series resistance in each 74ALVT162823DGG output path dampens signal reflections on PCB traces and cables, particularly in unterminated or stub-loaded bus configurations. This eliminates the need for discrete 33 Ω or 50 Ω surface-mount termination resistors - reducing BOM count, board area, and signal path discontinuities.