Nexperia USA Inc. 74ALVC16834ADGG,11

Overview

74ALVC16834ADGG,11 from Nexperia is an 18-bit registered bus driver with inverted latch enable (LE), active-low 3-state output enable (OE), and rising-edge clocked register operation. It provides transparent or latched A-to-Y data flow across 18 channels, supports 1.2 V to 3.6 V supply, delivers ±24 mA drive at V_CC = 3.0 V, and operates from −40 °C to +85 °C in TSSOP56 package. It is used in high-density memory interface and address/data bus buffering applications requiring precise timing control and low-noise signal integrity.

For engineers reviewing the 74ALVC16834ADGG,11 datasheet, 74ALVC16834ADGG,11 pinout, 74ALVC16834ADGG,11 application, or 74ALVC16834ADGG,11 equivalent, key selection criteria include propagation delay (as low as 2.3 ns at 3.3 V), 3-state disable time (4.1 ns), input/output voltage thresholds compliant with JEDEC JESD8B/JESD36, and multi-GND/V_CC pin architecture for ground bounce suppression.

Technical Context

This device implements a dual-mode 18-bit register: when LE is LOW, it operates in transparent mode; when LE is HIGH, data is captured on the rising edge of CP. OE controls 3-state output independently-asserting OE HIGH places all Y outputs in high-impedance without affecting internal latch state.

Its CMOS design enables direct TTL-level interfacing (2.7 V–3.6 V), supports 50 Ω transmission line driving at 85 °C, and integrates input clamping diodes and ESD protection exceeding 2000 V HBM and 1000 V CDM per JEDEC standards.

Key Specifications

Pinout & Package

TSSOP56 plastic thin shrink small outline package (SOT364-1), 56-lead, 6.1 mm body width, with 9 GND pins and 4 V_CC pins distributed for low-inductance power delivery and minimized ground bounce.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74ALVCH16834DGGR, the 74ALVC16834ADGG,11 offers lower quiescent current and no bus-hold-reducing power and simplifying biasing-but requires external pull-ups on unused inputs. Against 74LVC16834ADGG,11, the ALVC version's inverted LE reduces external logic complexity in systems where latch activation coincides with active-low control asserts.

Availability

74ALVC16834ADGG,11 is available at Aetrix Electronics and suitable for memory interface buffering, FPGA I/O expansion, and industrial backplane interfacing requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for 74ALVC16834ADGG,11 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 discrete components for automotive, industrial, and consumer applications.

The 74ALVC family delivers advanced low-voltage CMOS logic with extended supply range (1.2–3.6 V), optimized for power-sensitive and mixed-voltage digital systems requiring robust noise immunity and precise timing control.

FAQ

What is the minimum recommended pull-up resistor value for OE during power-up?

The datasheet specifies that OE should be tied to V_CC through a pull-up resistor whose minimum value is determined by the current-sinking capability of the driver. For typical use, a 10 kΩ resistor is sufficient to ensure high-impedance state during power ramp-up while limiting leakage current to <100 μA. Lower values (e.g., 4.7 kΩ) may be used if faster transition is needed, provided driver sink capability is verified.

Does the 74ALVC16834ADGG,11 support hot insertion into a live backplane?

No-this device is not hot-swap rated. Its absolute maximum ratings do not include live-insertion stress conditions, and the absence of I_off protection means partial powering could cause latch-up or excessive current draw. For hot-plug applications, external protection circuitry (e.g., series FETs, current-limiting resistors) and careful power sequencing are mandatory.

Can CP and LE be driven from the same controller output?

No-driving CP and LE from the same signal violates functional requirements. When LE is LOW, CP has no effect; when LE is HIGH, CP must transition to capture data. Simultaneous assertion would prevent transparent mode operation and cause unintended latching. Separate control lines are required to achieve both transparent and registered modes reliably.

How does the MULTIBYTE flow-through pinout improve PCB layout?

The flow-through architecture places A1/Y1, A2/Y2, ..., A18/Y18 in adjacent or nearby pins (e.g., A1 at pin 54, Y1 at pin 3), enabling straight-line trace routing with matched lengths and minimal layer transitions. This reduces skew, crosstalk, and impedance discontinuities-critical for maintaining signal integrity in 100+ Mbps parallel buses.