Nexperia USA Inc. 74ALVCH16501DGG,11

Overview

74ALVCH16501DGG,11 from Nexperia is an 18-bit universal bus transceiver with dual-directional data flow control, bus hold inputs, and 3-state non-inverting outputs. It supports transparent, latched, and clocked operation modes across 1.2 V to 3.6 V supply range, delivers ±24 mA drive at 3.0 V, and operates from –40 °C to +85 °C. Used in high-density PCB interconnects between ASICs, FPGAs, and memory subsystems requiring level translation and bus contention prevention.

For engineers reviewing the 74ALVCH16501DGG,11 datasheet, 74ALVCH16501DGG,11 pinout, 74ALVCH16501DGG,11 application, or 74ALVCH16501DGG,11 equivalent, this page provides verified functional behavior, TSSOP56 package layout, timing-critical propagation delays (as low as 1.0 ns), IOFF partial power-down protection, and bus hold current specifications for robust signal integrity in mixed-voltage digital systems.

Technical Context

This transceiver implements two independent 18-bit bidirectional data paths (A↔B) with separate latch enable (LEAB/LEBA), clock (CPAB/CPBA), and output enable (OEAB active HIGH / OEBA active LOW) controls. Each direction supports three operational modes: transparent (LE = HIGH), edge-triggered latching (LE = LOW + CP transition), or level-hold (LE = LOW + CP static).

The device integrates bus hold circuitry on all 36 data I/O pins (A0–A17, B0–B17), eliminating external pull-ups, and features IOFF circuitry that disables outputs during partial power-down to prevent backflow current - critical for hot-swap and multi-rail system designs.

Key Specifications

Pinout & Package

TSSOP56 plastic thin shrink small outline package (SOT364-1), 56-pin, 6.1 mm body width, 0.5 mm pitch, 1.2 mm max height - optimized for high-density routing and thermal dissipation in space-constrained industrial and telecom PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar universal bus transceiver applications.

Compared with SN74ALVTH16501DGGR and 74LVC16501ADGG,11, the 74ALVCH16501DGG,11 uniquely combines IOFF protection, robust bus hold, and 1.2 V minimum operation - making it the only option qualified for true mixed-voltage hot-swap interconnects.

Availability

74ALVCH16501DGG,11 is available at Aetrix Electronics and suitable for memory interface bridging, FPGA-to-ASIC interconnect, and industrial PLC I/O expansion requiring stable component supply across extended temperature and mixed-voltage conditions.

Supply support for 74ALVCH16501DGG,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 essential efficiency technologies - delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74ALVCH series targets high-speed, low-voltage digital interfacing with emphasis on bus integrity, power-down safety, and mixed-supply compatibility - designed specifically for next-generation embedded systems demanding robust signal translation without external support components.

FAQ

What is the purpose of the complementary OEAB (active HIGH) and OEBA (active LOW) configuration?

This dual-polarity enable scheme allows simultaneous 3-state control of both A and B buses using a single differential control signal pair - simplifying PCB routing and reducing FPGA I/O usage. OEAB HIGH + OEBA LOW enables A→B flow; OEAB LOW + OEBA HIGH enables B→A flow; both LOW places entire device in high-Z, preventing bus contention during arbitration.

Can the 74ALVCH16501DGG,11 operate reliably at 1.2 V with full timing performance?

Yes - the device is fully characterized down to 1.2 V per JEDEC JESD8-7, with guaranteed tpd ≤5.1 ns and fmax ≥150 MHz at CL = 30 pF. Static parameters including VIH/VIL and VOL/VOH remain valid across the full 1.2–3.6 V range, enabling use in ultra-low-power battery-operated systems without derating.

How does the bus hold circuit interact with externally pulled signals?

The internal bus hold (IBHL/IBHH) activates only when external drivers are inactive (high-Z). If an external resistor pulls a pin, the bus hold remains inactive and does not conflict. Its 75–175 μA holding current dominates weak external pulls (<10 kΩ), but yields cleanly to stronger drivers - ensuring interoperability with legacy designs using pull-ups.

Is the TSSOP56 package (SOT364-1) lead-free and RoHS-compliant?

Yes - the 74ALVCH16501DGG,11 uses a lead-free, halogen-free, RoHS-compliant TSSOP56 package (SOT364-1) with matte tin finish. It meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3), requires standard reflow profile, and is qualified for industrial temperature operation (–40 °C to +85 °C) per JEDEC JESD47 reliability standards.