NXP Semiconductors 74ALVCH162827DGG112

Overview

74ALVCH162827DGG112 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 and delivers ±12 mA output drive at 3.0 V, enabling robust signal integrity in high-speed parallel bus interfaces.

For engineers reviewing the 74ALVCH162827DGG112 datasheet, 74ALVCH162827DGG112 pinout, 74ALVCH162827DGG112 application, or 74ALVCH162827DGG112 equivalent, this device supports TTL-level interfacing, minimizes ground bounce via multiple low-inductance VCC/GND pins, and provides JEDEC-compliant ESD protection (HBM >2000 V, CDM >1000 V) for industrial board-level reliability.

Technical Context

This device implements two independent 10-bit buffer sections, each with dedicated active-low output enable (nOE1/nOE2), allowing selective 3-state control of either half without affecting the other. Its MULTIBYTE™ flow-through pinout aligns inputs and outputs on opposite sides of the TSSOP56 package to simplify PCB routing.

The integrated 30 Ω series termination resistors are placed directly at each output pin, reducing signal reflections on transmission lines without requiring external components. Bus hold circuitry maintains valid logic states on floating inputs, eliminating need for external pull-up/down resistors in unterminated systems.

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 buffer/line driver applications.

Compared with SN74ALVCH162827DGGR, the 74ALVCH162827DGG112 offers identical functionality but with Nexperia's enhanced ESD robustness and tighter propagation delay distribution; versus 74LVC16244ADGG, it provides full 20-bit width, built-in termination, and bus hold-reducing layout complexity and component count in noise-sensitive parallel interfaces.

Availability

74ALVCH162827DGG112 is available at Aetrix Electronics and suitable for industrial control backplanes, FPGA-to-memory interconnects, high-speed parallel I/O expansion, and legacy bus interface translation requiring stable component supply and long-term lifecycle support.

Supply support for 74ALVCH162827DGG112 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 energy-efficient logic, analog, and MOSFET solutions for industrial, computing, and consumer applications.

The 74ALVCH162827DGG112 belongs to Nexperia's ALVCH advanced low-voltage CMOS logic family, engineered for high-speed, low-noise parallel bus buffering in space-constrained industrial and embedded systems.

FAQ

What is the maximum operating frequency supported by the 74ALVCH162827DGG112?

The 74ALVCH162827DGG112 does not specify a maximum clock frequency, but its propagation delay (tpd) is 1.5 ns to 4.2 ns under recommended conditions (VCC = 3.0–3.6 V). This enables reliable operation in parallel bus systems with data rates exceeding 200 MHz, assuming proper PCB layout and load capacitance ≤50 pF. System-level timing must account for board trace delays and setup/hold margins.

Does the 74ALVCH162827DGG112 require external pull-up or pull-down resistors on its inputs?

No. The 74ALVCH162827DGG112 features bus hold circuitry on all 20 input pins (1A0–1A9, 2A0–2A9), which actively maintains the last valid logic state when inputs are floating. This eliminates the need for external pull-up or pull-down resistors in most applications, reducing BOM count and board area.

Can the 74ALVCH162827DGG112 be used in mixed-voltage systems where VCC is powered down while other rails remain active?

Yes. The 74ALVCH162827DGG112 includes IOFF circuitry that disables outputs and blocks backflow current when VCC = 0 V, even if input or output voltages exceed the supply rail. This feature enables safe operation in partial power-down scenarios such as hot-swap backplanes or sequenced power systems.

How does the integrated 30 Ω termination resistor affect signal integrity compared to using external resistors?

The integrated 30 Ω termination in the 74ALVCH162827DGG112 is placed directly at the die bond pad, minimizing parasitic inductance and ensuring precise impedance matching to typical PCB trace impedances (e.g., 50–60 Ω). External resistors introduce additional lead inductance and placement variation, degrading edge fidelity-especially above 100 MHz-where the monolithic integration provides superior reflection suppression.

What is the purpose of the four output enable pins (1OE1, 1OE2, 2OE1, 2OE2) on the 74ALVCH162827DGG112?

The 74ALVCH162827DGG112 uses two active-LOW output enable pairs: 1OE1/1OE2 controls the first 10 outputs (1Y0–1Y9), and 2OE1/2OE2 controls the second 10 (2Y0–2Y9). This allows independent 3-state control of each 10-bit group-enabling flexible bus arbitration, reduced contention, and dynamic partitioning of data lanes without requiring external logic.