Nexperia USA Inc. 74ALVT162823DGGY

Overview

74ALVT162823DGGY from Nexperia is an 18-bit positive-edge-triggered D-type flip-flop with integrated 30 Ω series output termination, dual 9-bit independent control (nCP/nCE/nMR/nOE), bus-hold inputs, and 3-state outputs. It operates at 2.5 V or 3.3 V supply, delivers ±12 mA drive strength, and supports −40 °C to +85 °C industrial temperature range. Used in high-speed bus interface applications for data latching and isolation in memory expansion and peripheral interfacing.

For engineers reviewing the 74ALVT162823DGGY datasheet, 74ALVT162823DGGY pinout, 74ALVT162823DGGY application, or 74ALVT162823DGGY equivalent, key selection criteria include its dual 9-bit register architecture, on-die 30 Ω termination eliminating external resistors, bus-hold functionality for floating input immunity, power-up 3-state and reset behavior, and TSSOP56 package compatibility with dense PCB layouts.

Technical Context

The device implements two independent 9-bit D-type flip-flop banks, each with dedicated clock (nCP), clock enable (nCE), master reset (nMR), and output enable (nOE) signals. Each bank latches data on the LOW-to-HIGH transition of its nCP when nCE is LOW, while nMR asynchronously resets all outputs to LOW and nOE places outputs in high-impedance state without affecting internal state.

Bus-hold circuitry maintains valid logic levels on unused data inputs without external pull-ups, and integrated 30 Ω series output resistors suppress signal reflections on transmission lines-enabling direct connection to 50 Ω traces without discrete termination. The design supports live insertion/extraction and meets JESD78 latch-up immunity (>500 mA) and HBM ESD robustness (>2000 V).

Key Specifications

Pinout & Package

TSSOP56 plastic thin shrink small outline package (SOT364-1), 56-pin, body width 6.1 mm, 0.5 mm pitch, 1.2 mm max height. Lead finish: SnAgCu (lead-free), RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 18-bit bus-interface flip-flop applications.

Compared with SN74ALVTH162823DGGR, the 74ALVT162823DGGY offers lower static current and integrated bus-hold, reducing external components; versus 74LVT162823DGGY, it adds termination and bus-hold at minimal cost premium-making it optimal for new designs requiring robustness and layout simplicity.

Availability

74ALVT162823DGGY is available at Aetrix Electronics and suitable for memory expansion interfaces, industrial I/O modules, hot-swappable backplane systems, and FPGA peripheral bridging requiring stable component supply and long-term industrial lifecycle support.

Supply support for 74ALVT162823DGGY 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 semiconductor expert delivering high-performance, reliable logic, analog, and MOSFET solutions with focus on efficiency, miniaturization, and robustness for industrial and automotive markets.

The 74ALVT series targets high-speed, low-power bus interface applications where signal integrity, termination integration, and input stability are critical-designed specifically for memory subsystems, backplane interconnects, and FPGA-ASIC bridging in space-constrained industrial systems.

FAQ

What is the purpose of the 30 Ω series resistance on each output?

The 30 Ω series resistance is integrated into each output driver to match typical PCB trace impedances (e.g., 50 Ω single-ended). It dampens signal reflections, reduces ringing, and eliminates the need for external series termination resistors-cutting BOM count by up to 18 components and simplifying layout for high-speed bus routing.

Does the device support mixed-voltage operation between inputs and outputs?

Yes. All inputs tolerate up to 5.5 V regardless of VCC (2.5 V or 3.3 V), enabling safe interfacing with 5 V legacy logic. Outputs swing rail-to-rail within VCC, and the 30 Ω series resistance isolates output voltage swing from trace impedance effects-allowing reliable communication across voltage domains without level shifters.

How does bus-hold functionality affect unused input pins?

Bus-hold circuitry actively maintains the last valid logic state (HIGH or LOW) on any un-driven data input (1D0–1D8, 2D0–2D8), drawing only ±130 μA. This prevents floating inputs from drifting into the linear region, eliminating false triggering, excessive current draw, and EMI generation-removing the need for 18 external pull-up or pull-down resistors.

Can both 9-bit banks operate with different clock frequencies?

Yes. The independent 1CP/2CP inputs allow asynchronous operation: Bank 1 can run at one frequency (e.g., 100 MHz for address latching) while Bank 2 runs at another (e.g., 50 MHz for data strobing). Clock enable (1CE/2CE) and output enable (1OE/2OE) further decouple timing domains, enabling flexible multi-rate bus architectures without synchronization logic.