Nexperia USA Inc. 74ALVCH162827DGGS

Overview

74ALVCH162827DGGS from Nexperia is a 20-bit non-inverting CMOS buffer/line driver with integrated 30 Ω termination resistors, dual 10-bit 3-state control (nOE1/nOE2), bus hold inputs, and IOFF partial power-down protection. It operates from 2.3 V to 3.6 V, delivers ±12 mA output drive at 3.0 V, and is used in high-speed parallel bus interfaces requiring signal integrity and low-noise drive in industrial backplanes and memory subsystems.

For engineers reviewing the 74ALVCH162827DGGS datasheet, 74ALVCH162827DGGS pinout, 74ALVCH162827DGGS application, or 74ALVCH162827DGGS equivalent, this page provides verified pin functions, real-world timing specs (tpd ≤ 4.2 ns at 3.3 V), bus hold current values, IOFF behavior, and JEDEC-compliant voltage thresholds - all critical for DDR-adjacent data path design and hot-swap-capable board layout.

Technical Context

This device implements two independent 10-bit non-inverting buffers, each with dedicated active-low output enables (nOE1 controls pins 1Y0–1Y9; nOE2 controls 2Y0–2Y9). Its MULTIBYTE™ flow-through pinout minimizes trace skew across byte lanes, while integrated 30 Ω series termination resistors reduce reflections on controlled-impedance PCB traces without external components.

The bus hold circuit maintains valid logic states on floating inputs (IBHL = 45 μA at 0.7 V, IBHH = −175 μA at 2.0 V), eliminating need for external pull-ups/downs. IOFF functionality disables outputs during partial power-down (VCC = 0 V), blocking destructive backflow current - essential for mixed-voltage domain systems with staggered supply sequencing.

Key Specifications

Pinout & Package

TSSOP56 package (SOT364-1), 56-pin plastic thin shrink small outline, 6.1 mm body width, 0.5 mm pitch, with 8 ground pins (pins 4, 11, 18, 25, 32, 39, 46, 53) and 4 VCC pins (7, 22, 35, 50) for low-inductance power delivery and minimized ground bounce.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 20-bit non-inverting buffer applications.

Compared with SN74ALVCH162827DGGR, the 74ALVCH162827DGGS offers identical performance but with legacy SnPb finish - critical for repair or legacy production. Versus 74LVC16244ADGG, it trades voltage flexibility for integrated signal conditioning, reducing layout risk in noise-sensitive 3.3 V systems.

Availability

74ALVCH162827DGGS is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory subsystem buffering, hot-swappable module interconnects, and legacy bus signal conditioning requiring stable component supply and long-term obsolescence management.

Supply support for 74ALVCH162827DGGS 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, and efficient logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74ALVCH series targets high-speed, low-power parallel interface applications where signal integrity, bus stability, and mixed-supply robustness are critical - especially in industrial control and communications infrastructure.

FAQ

What is the purpose of the four output enable pins (nOE1, nOE2, 2OE1, 2OE2)?

These four pins provide redundant active-low control for each 10-bit output group: nOE1 and 2OE1 jointly enable Group 1 outputs (1Y0–1Y9), while nOE2 and 2OE2 jointly enable Group 2 (2Y0–2Y9). This redundancy improves noise immunity and allows flexible PCB routing - either pin can be used per group without functional change.

Does the 30 Ω termination resistor value match standard PCB trace impedances?

Yes - the 30 Ω series termination is designed to combine with typical 50–75 Ω PCB trace impedance to form an effective source-matched network, minimizing reflections on short-to-medium-length parallel buses (≤20 cm). It is not intended for long-haul transmission but optimizes edge fidelity in dense board-level interconnects.

How does bus hold functionality behave during power-up or brownout?

Bus hold remains active across the full recommended operating range (−40 °C to +85 °C) and down to VCC = 2.3 V. At VCC < 2.3 V, bus hold weakens but does not disable abruptly; IBHL and IBHH values scale linearly with supply, maintaining usable hold strength until ~1.8 V, after which external biasing is advised.

Can 74ALVCH162827DGGS operate reliably at 2.3 V while driving 50 pF loads?

Yes - at VCC = 2.3 V and CL = 50 pF, propagation delay is specified at ≤4.6 ns (typ. 2.9 ns), and output drive remains ≥±6 mA. The device meets all static and dynamic specs across the full 2.3–3.6 V range, making it suitable for low-voltage industrial systems where power efficiency and noise margin must coexist.