Nexperia USA Inc. 74ALVT162827DL,518

Overview

74ALVT162827DL,518 from Nexperia is a 20-bit non-inverting buffer/line driver with integrated 30 Ω termination resistors and dual 3-state control (OE1/OE2), operating from 2.3 V to 3.6 V supply. It supports two independent 10-bit channels or unified 20-bit operation, features bus hold on all inputs to eliminate external pull-ups, and delivers sub-3.5 ns propagation delay at 3.3 V for high-speed parallel bus interfacing in industrial backplanes and memory expansion modules.

For engineers reviewing the 74ALVT162827DL,518 datasheet, 74ALVT162827DL,518 pinout, 74ALVT162827DL,518 application, or 74ALVT162827DL,518 equivalent, this device is selected for its overvoltage-tolerant 5.5 V inputs, IOFF partial power-down capability, and guaranteed -40 °C to +85 °C operation - critical for robustness in mixed-voltage board-level signal conditioning.

Technical Context

The 74ALVT162827DL,518 implements BiCMOS logic architecture enabling TTL-level compatibility while sustaining 12 mA output drive at 3.3 V. Its dual OE structure allows independent gating of two 10-bit sections, supporting flexible bus segmentation without external logic.

Each output integrates a 30 Ω series resistor for impedance matching to transmission lines, reducing reflections in high-speed parallel interfaces. Bus hold circuitry maintains stable logic states on unused inputs, eliminating need for discrete pull-up/down components and simplifying PCB layout.

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 - optimized for high-density routing and thermal dissipation in compact PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar buffer/line driver applications.

Compared with SN74ALVTH162827DGGR and 74LVT162244ADGG,118, the 74ALVT162827DL,518 uniquely combines bus hold, integrated termination, and dual 10-bit OE control - reducing component count and improving signal integrity in space-constrained industrial backplanes.

Availability

74ALVT162827DL,518 is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory expansion modules, high-speed test equipment, and programmable logic carrier boards requiring stable component supply across extended temperature ranges.

Supply support for 74ALVT162827DL,518 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 focused on high-volume, high-reliability logic, analog, and MOSFET solutions for industrial, automotive, and consumer markets.

The 74ALVT series targets high-speed, low-voltage bus interface applications where signal integrity, power efficiency, and mixed-voltage interoperability are critical - especially in industrial automation and communications infrastructure.

FAQ

What is the purpose of the four OE inputs (1OE0, 1OE1, 2OE0, 2OE1)?

These are active-LOW enable inputs controlling two independent 10-bit output groups: 1OE0/1OE1 manage outputs 1Y0–1Y9, and 2OE0/2OE1 manage 2Y0–2Y9. Each pair allows selective 3-state control of five-output subsets (e.g., 1Y0–1Y4 and 1Y5–1Y9), enabling fine-grained bus arbitration without external decoding logic.

Does the 30 Ω termination apply to all 20 outputs?

Yes - each of the 20 outputs (1Y0–1Y9 and 2Y0–2Y9) integrates a 30 Ω series resistor, as confirmed in Figure 4 of the datasheet and Table 5 functional description. This value is fixed and not configurable, designed to match typical PCB trace impedances in short-haul parallel interconnects.

Can 74ALVT162827DL,518 operate with a 2.5 V supply and interface to a 5 V bus?

Yes - it supports 2.3 V to 3.6 V VCC and tolerates input voltages up to 5.5 V regardless of supply level. This allows direct connection to 5 V buses while powered from 2.5 V, eliminating level shifters in mixed-voltage systems such as FPGA-to-legacy-peripheral interfaces.

How does bus hold functionality affect unused input pins?

Bus hold actively maintains the last-valid logic state on any unused input (1A0–1A9, 2A0–2A9) with ±75 μA to ±140 μA current, preventing floating nodes. This removes the need for external pull-up or pull-down resistors, reducing component count and PCB routing complexity in designs with partially populated buses.