Nexperia USA Inc. 74ALVCH16825DGGS

Overview

74ALVCH16825DGGS from Nexperia is an 18-bit non-inverting 3-state buffer/driver with dual 9-bit sections, bus hold circuitry, 1.2 V to 3.6 V supply range, ±24 mA output drive at 3.0 V, and operation from −40 °C to +85 °C. It enables bidirectional bus isolation in memory address/data buffering, FPGA I/O expansion, and industrial control backplanes.

For engineers reviewing the 74ALVCH16825DGGS datasheet, 74ALVCH16825DGGS pinout, 74ALVCH16825DGGS application, or 74ALVCH16825DGGS equivalent, key selection criteria include dual independent OE control per 9-bit section, TSSOP56 package pin compatibility, bus hold functionality eliminating external resistors, and propagation delay ≤3.4 ns at 3.3 V.

Technical Context

The device implements two electrically isolated 9-bit buffer sections, each requiring both OE inputs (e.g., 1OE1 and 1OE2) to be LOW for output activation; either HIGH forces high-impedance state. Bus hold circuitry actively maintains unused inputs at valid logic levels without pull resistors.

It supports mixed-voltage interfacing across JEDEC standards JESD8-7 (1.65–1.95 V), JESD8-5 (2.3–2.7 V), and JESD8C/JESD36 (2.7–3.6 V), with HBM ESD rating >2000 V and CDM >1000 V. Output drive targets 50 Ω transmission lines at 85 °C.

Key Specifications

Pinout & Package

TSSOP56 (SOT364-1) package: plastic thin shrink small outline, 56 leads, 6.1 mm body width, 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 3-state buffer applications.

Compared with SN74ALVTH16825DGGR and 74LVC16245ADGG, the 74ALVCH16825DGGS uniquely combines 18-bit width, dual independent OE control, integrated bus hold, and 1.2–3.6 V operation-enabling simpler, more robust bus isolation in mixed-voltage industrial systems without external components.

Availability

74ALVCH16825DGGS is available at Aetrix Electronics and suitable for memory subsystem buffering, FPGA I/O expansion, industrial backplane interfacing, and automated test equipment requiring stable component supply and long-term lifecycle continuity.

Supply support for 74ALVCH16825DGGS 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 headquartered in Nijmegen, Netherlands, specializing in high-volume, high-reliability logic, analog, and discrete components for industrial, automotive, and computing markets.

The 74ALVCH series delivers advanced low-voltage CMOS buffers with bus hold and wide supply range, designed specifically for robust, space-constrained bus interface applications in industrial control and embedded systems.

FAQ

What is the minimum supply voltage required for guaranteed operation of the 74ALVCH16825DGGS?

The device is fully specified down to 1.2 V supply voltage, with static and dynamic parameters validated across the full 1.2–3.6 V range per JEDEC standards JESD8-7, JESD8-5, and JESD8C/JESD36. Operation below 1.2 V may result in undefined logic states or timing violations.

How does the dual-output-enable architecture improve system design flexibility?

Each 9-bit section has two independent active-LOW OE inputs (e.g., 1OE1 and 1OE2); both must be LOW to activate outputs. This allows hierarchical enable control-e.g., one OE for global section enable and another for local mode selection-reducing external logic gates and improving fault isolation.

Can the 74ALVCH16825DGGS drive 50 Ω transmission lines at 85 °C without derating?

Yes-the datasheet explicitly specifies "Output drive capability 50 Ω transmission lines at 85 °C" under Features and Benefits. At 3.0 V supply, it delivers ±24 mA, sufficient to meet 50 Ω line requirements across the full industrial temperature range without additional buffering or cooling.

Is the bus hold circuitry enabled by default, and does it affect input leakage current?

Bus hold is always active and requires no configuration. It draws IBHL = 75–150 μA when inputs float LOW and IBHH = −75 to −175 μA when floating HIGH at 3.0 V. Input leakage remains ≤5 μA under normal VIH/VIL conditions, so bus hold adds no measurable static power penalty during active operation.