NXP Semiconductors 74ALVCH16825DGG112

Overview

74ALVCH16825DGG112 from Nexperia is an 18-bit non-inverting bus buffer/driver with 3-state outputs, dual 9-bit sections, independent output enable control (1OE1/1OE2 and 2OE1/2OE2), bus hold on all data inputs, and operation across 1.2 V to 3.6 V supply. It enables bidirectional bus isolation in high-density memory and logic interconnect systems.

For engineers reviewing the 74ALVCH16825DGG112 datasheet, 74ALVCH16825DGG112 pinout, 74ALVCH16825DGG112 application, or 74ALVCH16825DGG112 equivalent, key selection criteria include 3-state timing (tpd ≤ 3.4 ns at 3.3 V), ±24 mA drive strength, TSSOP56 package compatibility, and bus hold current specification (IBHL = 75–150 μA at 3.0 V).

Technical Context

The 74ALVCH16825DGG112 implements two independent 9-bit buffer sections, each requiring both OE inputs LOW to activate outputs-enabling granular bus segment control. Its CMOS architecture supports TTL-level interfacing while maintaining low dynamic power via CPD = 19 pF (outputs enabled) and 3 pF (outputs disabled).

Bus hold circuitry actively maintains unused inputs at valid logic levels without external resistors, with IBHL and IBHH specified across 2.3 V–3.6 V supply range. Propagation delay (tpd), enable time (ten), and disable time (tdis) are characterized per JEDEC test conditions with CL = 30–50 pF and defined VI/VCC thresholds.

Key Specifications

Pinout & Package

TSSOP56 plastic thin shrink small outline package (SOT364-1), 56 leads, body width 6.1 mm, 0.5 mm pitch, 1.2 mm max height.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74ALVCH16825DGGR, the 74ALVCH16825DGG112 offers identical functionality and form factor but differs in manufacturer qualification and traceability; compared with 74LVC162245ADGG, it adds two data bits, integrated bus hold, and tighter timing control-making it superior for noise-sensitive, full-width industrial bus isolation.

Availability

74ALVCH16825DGG112 is available at Aetrix Electronics and suitable for memory subsystem bus isolation, high-density logic interconnect, industrial control backplane, and test equipment signal conditioning requiring stable component supply and long-term industrial temperature support.

Supply support for 74ALVCH16825DGG112 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, discrete, and MOSFET solutions optimized for efficiency and miniaturization.

The 74ALVCH16825DGG112 belongs to Nexperia's ALVCH advanced low-voltage CMOS logic family, designed specifically for high-speed, low-power bus interface applications in industrial and computing systems.

FAQ

What is the maximum propagation delay of the 74ALVCH16825DGG112 at 3.3 V supply?

The maximum propagation delay (tpd) of the 74ALVCH16825DGG112 is 3.4 ns when VCC = 3.0 V to 3.6 V, measured under CL = 50 pF load conditions per JEDEC test methodology. This value applies to the nAn-to-nYn path and ensures compatibility with sub-4 ns timing budgets in high-speed bus architectures. The 74ALVCH16825DGG112 achieves this performance while maintaining ±24 mA drive capability and bus hold functionality.

Does the 74ALVCH16825DGG112 require external pull-up or pull-down resistors on its inputs?

No, the 74ALVCH16825DGG112 does not require external pull-up or pull-down resistors because it integrates active bus hold circuitry on all 18 data inputs (1A0–1A8 and 2A0–2A8). This feature maintains unused or floating inputs at valid logic levels using internal feedback, with IBHL = 75–150 μA at VCC = 3.0 V. The 74ALVCH16825DGG112 eliminates BOM cost and layout area associated with discrete termination components.

What are the supply voltage requirements for reliable operation of the 74ALVCH16825DGG112?

The 74ALVCH16825DGG112 operates reliably across a wide supply range of 1.2 V to 3.6 V, supporting 1.8 V, 2.5 V, and 3.3 V logic domains without level shifters. Recommended operating conditions specify VCC = 2.3–2.7 V (for 2.5 V nominal) and 3.0–3.6 V (for 3.3 V nominal), with full functionality guaranteed from −40 °C to +85 °C ambient. The 74ALVCH16825DGG112 complies with JEDEC standards JESD8-7, JESD8-5, and JESD8C/JESD36 across these ranges.

How many output enable inputs does the 74ALVCH16825DGG112 have, and how do they function?

The 74ALVCH16825DGG112 has four active-LOW output enable inputs: 1OE1 and 1OE2 for the first 9-bit section, and 2OE1 and 2OE2 for the second. Both OE inputs per section must be LOW to enable the corresponding nine outputs; if either is HIGH, that entire 9-bit section enters high-impedance state. This dual-OE architecture allows independent control of each half-bus, enabling flexible segmentation in multi-master systems. The 74ALVCH16825DGG112 implements this logic without external gating.

Is the 74ALVCH16825DGG112 pin-compatible with other 18-bit ALVCH buffers from Nexperia?

Yes, the 74ALVCH16825DGG112 is pin-compatible with all Nexperia 74ALVCH16825 variants in the TSSOP56 (SOT364-1) package, including standard 74ALVCH16825DGG. Pin assignments, electrical characteristics, and functional behavior are identical across these orderable versions-the suffix "112" denotes tape-and-reel packaging and date code variant, not functional differentiation. The 74ALVCH16825DGG112 shares the same MULTIBYTE™ flow-through pinout and thermal/mechanical specifications.