Nexperia USA Inc. 74ALVCH16823DGGY

Overview

74ALVCH16823DGGY from Nexperia is an 18-bit edge-triggered D-type flip-flop with independent 9-bit sections, 3-state outputs, active-LOW master reset (nMR), clock enable (nCE), and output enable (nOE) - designed for high-density bus interfacing in industrial control backplanes and memory expansion modules. It operates from 1.2 V to 3.6 V, delivers ±24 mA output drive at 3.0 V, and features bushold inputs eliminating external pull-ups.

For engineers reviewing the 74ALVCH16823DGGY datasheet, 74ALVCH16823DGGY pinout, 74ALVCH16823DGGY application, or 74ALVCH16823DGGY equivalent, this device supports precise timing-critical data latching in multi-drop parallel buses, synchronous register file expansion, and hot-swap-capable I/O buffering where deterministic setup/hold timing, low ground bounce, and rail-to-rail logic compatibility are required.

Technical Context

This dual-section 9-bit flip-flop implements two independent synchronous latch groups, each with dedicated nCP (rising-edge clock), nCE (active-LOW clock enable), nMR (asynchronous active-LOW reset), and nOE (active-LOW 3-state control). Clock-enable gating occurs before the internal clock buffer, enabling cycle-accurate output hold without affecting stored state.

Bushold circuitry actively maintains valid logic levels on all 18 data inputs (1D0–1D8, 2D0–2D8) when floating, eliminating external biasing. The TSSOP56 package integrates eight GND and four VCC pins to minimize simultaneous switching noise and ensure stable operation up to 350 MHz at 3.3 V.

Key Specifications

Pinout & Package

TSSOP56 (SOT364-1) package: plastic thin shrink small outline, 56 leads, 6.1 mm body width, 0.5 mm lead pitch, 1.2 mm max height - optimized for high-density PCB layouts with low inductance via multiple VCC/GND pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74ALVTH16823DGGR and 74LVC16374APAG, the 74ALVCH16823DGGY uniquely combines bushold, dual-section independent control, and guaranteed ±24 mA drive at 3.0 V - making it optimal for compact, low-BOM industrial bus interfaces requiring robust floating-input handling and precise reset partitioning.

Availability

74ALVCH16823DGGY is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory expansion modules, communications protocol bridges, and test equipment signal conditioning requiring stable component supply across extended temperature ranges.

Supply support for 74ALVCH16823DGGY 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 logic, analog, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for industrial and consumer applications.

The 74ALVCH series targets low-voltage, high-speed bus interface applications - engineered for rail-to-rail compatibility, ultra-low static current, and noise-immune operation in space-constrained embedded systems.

FAQ

What is the minimum supply voltage for guaranteed operation of the 74ALVCH16823DGGY?

The device is fully specified from 1.2 V to 3.6 V, with static and dynamic parameters validated down to 1.2 V. At 1.2 V, propagation delay increases to 10.6 ns and maximum frequency drops to 125 MHz, but all logic functions, bushold behavior, and 3-state control remain functional per datasheet Table 5 and Table 7.

How does the bushold circuit affect input leakage current?

Bushold adds ±75 μA to ±175 μA active holding current (IBHH/IBHL) depending on input voltage and VCC, but does not increase static input leakage - II remains ≤ ±5 μA per pin under recommended operating conditions (Table 6). This ensures low standby power while maintaining robust floating-input immunity.

Can the 74ALVCH16823DGGY be used in hot-swap applications?

Yes - its active-LOW nMR and nOE allow safe bus isolation: asserting nOE HIGH places outputs in high-impedance state before power-up, and asserting nMR LOW after insertion resets outputs to known LOW state prior to enabling clocks, preventing bus contention during live insertion.

What is the significance of MULTIBYTE™ flow-through pinout in PCB layout?

The flow-through arrangement routes inputs on one side and corresponding outputs on the opposite side (e.g., 1D0→1Q0, 1D1→1Q1), enabling straight-line trace routing with minimal layer changes and reduced crosstalk - critical for maintaining signal integrity in high-speed 18-bit parallel buses on dense multilayer boards.