Nexperia USA Inc. 74ALVT162827DGGS

Overview

74ALVT162827DGGS from Nexperia is a 20-bit non-inverting buffer/line driver with integrated 30 Ω termination resistors and dual 3-state enable control (OE1/OE2), operating across 2.3 V to 3.6 V supply. It supports split 10-bit or unified 20-bit bus buffering in high-speed TTL- and CMOS-compatible systems, featuring bus hold on all data inputs and IOFF partial power-down. Used in backplane interface and memory subsystem drivers where impedance-matched signal integrity is critical.

For engineers reviewing the 74ALVT162827DGGS datasheet, 74ALVT162827DGGS pinout, 74ALVT162827DGGS application, or 74ALVT162827DGGS equivalent, key selection criteria include its 2.3–3.6 V operation, 30 Ω on-die termination, dual independent 3-state enables, bus hold functionality eliminating external pull-ups, and guaranteed -40 °C to +85 °C performance.

Technical Context

This BiCMOS device implements two independent 10-bit non-inverting buffers, each controlled by dedicated active-low output enables (1OE0/1OE1 for Group 1; 2OE0/2OE1 for Group 2). Each output integrates a 30 Ω series resistor for source termination, reducing signal reflections on transmission lines.

Bus hold circuitry maintains valid logic states on unused inputs without external biasing, while IOFF protection disables I/O leakage during power-down. Input overvoltage tolerance up to 5.5 V enables safe interfacing with 5 V buses even when VCC = 2.5 V or 3.3 V.

Key Specifications

Pinout & Package

TSSOP56 (SOT364-1) package: 56-pin plastic thin shrink small outline, 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 20-bit buffer applications.

Compared with SN74ALVTH162827DGGR and 74LVC16244ADGG, the 74ALVT162827DGGS uniquely balances integrated 30 Ω termination, bus hold, and IOFF in a single industrial-grade package-reducing BOM count and improving robustness in noisy, hot-swap environments without sacrificing timing performance.

Availability

74ALVT162827DGGS is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory subsystems, FPGA configuration links, and I/O expansion modules requiring stable component supply across extended temperature ranges.

Supply support for 74ALVT162827DGGS 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 leading global semiconductor manufacturer specializing in high-performance, high-reliability logic, analog, and discrete components for industrial, automotive, and computing applications.

The 74ALVT family delivers advanced BiCMOS buffer/driver solutions optimized for high-speed, low-noise digital interconnects in mixed-voltage systems-designed specifically for signal integrity-critical backplane, memory, and FPGA interface applications.

FAQ

What is the purpose of the four output enable pins (1OE0, 1OE1, 2OE0, 2OE1)?

Each pair (1OE0/1OE1 and 2OE0/2OE1) controls one 10-bit output group independently. A HIGH on either enable within a pair places that group's outputs in high-impedance state. This allows selective disabling of subsets of the 20-bit bus-for example, isolating memory address vs. data lines-without affecting the other group's operation or timing.

Can 74ALVT162827DGGS safely interface with 5 V logic while powered at 3.3 V?

Yes. All inputs tolerate up to 5.5 V regardless of VCC, enabling direct connection to 5 V peripherals or buses. The outputs swing rail-to-rail (0 V to VCC), so when powered at 3.3 V, they deliver 3.3 V logic levels-compatible with 3.3 V receivers. No level shifter is needed for input-side 5 V interfacing.

How does the bus hold feature eliminate external pull-up resistors?

Internal weak keeper circuits actively drive unused inputs to their last valid logic state using ±130 μA (typ) current. This prevents floating nodes from drifting into undefined voltage regions, removing susceptibility to noise and EMI-eliminating the need for discrete 10–100 kΩ pull-up/pull-down resistors on unconnected inputs.

What is the significance of the IOFF specification in power sequencing?

IOFF ensures that when VCC = 0 V, the I/O pins present high impedance and draw <±100 μA leakage-even if external voltages (up to 4.5 V) are applied. This prevents back-powering or latch-up in systems where this device powers up after or before connected ICs, making it safe for hot-swap and multi-rail power sequencing.