Nexperia USA Inc. 74ALVC162835ADGG,1

Overview

74ALVC162835ADGG,1 from Nexperia is an 18-bit registered bus driver with integrated 30 Ω series termination resistors, 3-state outputs, and dual control via latch enable (LE) and clock (CP). It operates from 1.2 V to 3.6 V, delivers ±12 mA drive at 3.0 V, and supports transparent or edge-triggered data latching. It is used in high-speed parallel bus interfaces requiring impedance-matched signal integrity, such as memory expansion and FPGA I/O bridging.

For engineers reviewing the 74ALVC162835ADGG,1 datasheet, 74ALVC162835ADGG,1 pinout, 74ALVC162835ADGG,1 application, or 74ALVC162835ADGG,1 equivalent, key selection criteria include its 30 Ω on-die termination, TSSOP56 package with 9 ground pins for noise suppression, 2.9 ns typical propagation delay at 3.3 V, and compatibility with 1.2 V–3.6 V logic families including TTL.

Technical Context

The device implements a dual-mode register: when LE is HIGH, it operates as a transparent buffer; when LE is LOW, data is captured on the LOW-to-HIGH transition of CP. Output enable (OE) is independent of latch state and forces high-impedance outputs when HIGH. The 30 Ω series resistors are placed in both output stages (HIGH and LOW), enabling direct 50 Ω transmission line driving without external termination.

It features diode clamps on all inputs for overvoltage protection, low-inductance multiple VCC/GND pins (4 VCC, 9 GND), and compliance with JEDEC 8-1A. Static input thresholds scale with VCC (VIH = 0.7×VCC min at 2.3 V; 0.5×VCC min at 3.3 V), ensuring robust interfacing across voltage domains.

Key Specifications

Pinout & Package

TSSOP56 (SOT364-1) package: 56-pin plastic thin shrink small outline, 6.1 mm body width, 0.5 mm pitch, with 4 VCC pins (pins 7, 22, 35, 50) and 9 GND pins (pins 4, 11, 18, 25, 32, 39, 46, 53, 56) for low-noise power distribution.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 18-bit registered driver applications.

Compared with SN74ALVCH162835DGGR, the 74ALVC162835ADGG,1 reduces component count and layout complexity via on-die termination; versus 74LVC162244APAG, it adds essential clocked latching and true 18-bit alignment, making it uniquely suited for synchronous parallel data acquisition.

Availability

74ALVC162835ADGG,1 is available at Aetrix Electronics and suitable for industrial control systems, FPGA-based instrumentation, memory expansion modules, and high-speed test equipment requiring stable component supply and long-term obsolescence management.

Supply support for 74ALVC162835ADGG,1 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, with leadership in advanced packaging and automotive-qualified components.

The ALVC logic family targets high-speed, low-voltage, low-power applications in industrial, computing, and communications infrastructure, emphasizing signal integrity, noise immunity, and multi-voltage interoperability.

FAQ

What is the purpose of the 30 Ω series resistors in the 74ALVC162835ADGG,1?

The 30 Ω series resistors are integrated into both HIGH and LOW output paths to provide source termination matching typical 50 Ω PCB trace impedances. This reduces signal reflections, overshoot, and ringing on high-speed parallel buses-especially in point-to-point or short-stub configurations-without requiring external discrete resistors. They are effective across the full 1.2 V–3.6 V supply range and temperature (-40 °C to +85 °C).

How does the latch enable (LE) and clock (CP) interaction determine data flow behavior?

When LE is HIGH, the device operates in transparent mode: A-inputs appear at Y-outputs with propagation delay, regardless of CP state. When LE is LOW, data is latched only on the LOW-to-HIGH transition of CP; steady-state CP levels (HIGH or LOW) hold the last captured value. OE remains fully independent-enabling/disabling outputs without affecting latch contents-making it ideal for bus arbitration and power sequencing.

Can the 74ALVC162835ADGG,1 be used with 1.2 V logic systems?

Yes. The device is fully specified down to 1.2 V supply, with guaranteed VIH = 0.7×VCC (≥0.84 V) and VIL = 0.3×VCC (≤0.36 V) at that voltage. Input leakage remains ≤5 μA, and propagation delay increases predictably (5.0 ns max at 1.2 V–2.7 V range). Its CMOS design ensures rail-to-rail output swing and compatibility with 1.2 V ASICs, ultra-low-power MCUs, and battery-operated instrumentation.

Why does the datasheet recommend tying OE to VCC via a pull-up resistor?

During power-up or power-down, VCC may ramp slowly or become unstable, causing OE to float. A pull-up resistor ensures OE remains HIGH (outputs disabled) until VCC reaches valid logic levels, preventing unintended output contention or bus conflicts. The minimum resistor value depends on the driver's current-sinking capability (typically ≥10 kΩ for safe margin), and placement near the device minimizes noise coupling on the OE net.