Nexperia USA Inc. 74ALVCH16601DGG:11

Overview

74ALVCH16601DGG:11 from Nexperia is an 18-bit universal bus transceiver with bidirectional data flow control, bus hold inputs, and 3-state outputs. It supports A-to-B and B-to-A data transfer via independent latch enable (LEAB/LEBA), clock (CPAB/CPBA), clock enable (CEAB/CEBA), and output enable (OEAB/OEBA) controls. Operates from 1.65 V to 3.6 V supply, delivers ±24 mA drive at 3.0 V, and is rated for −40 °C to +85 °C - used in high-density memory interface and backplane bus isolation applications.

For engineers reviewing the 74ALVCH16601DGG:11 datasheet, 74ALVCH16601DGG:11 pinout, 74ALVCH16601DGG:11 application, or 74ALVCH16601DGG:11 equivalent, this page provides verified functional architecture, TSSOP56 pin mapping, bus hold current specs, propagation delay values across voltage ranges, and validated alternatives for industrial bus interface redesigns.

Technical Context

This device implements dual-directional, clocked/latched/unlatched data transfer using separate control paths per direction. Each of its 18 channels supports transparent mode (LE HIGH), edge-triggered latching (LE LOW + CP transition), or hold mode (LE LOW + CE LOW), with independent 3-state output control via OE signals.

The IOFF partial power-down feature disables outputs when VCC = 0 V, preventing backflow current. Bus hold circuitry maintains valid logic states on all 36 data terminals (A0–A17, B0–B17) without external pull-ups, with IBHL/IBHH currents specified at 75–150 μA (LOW) and −75 to −175 μA (HIGH) at VCC = 3.0 V.

Key Specifications

Pinout & Package

TSSOP56 package (SOT364-1), 6.1 mm body width, 56-pin thin shrink small outline with exposed thermal pad not present - optimized for high-pin-count density and low ground bounce via multiple VCC/GND pins (4×VCC, 8×GND).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74ALVTH16601DGGR, the 74ALVCH16601DGG:11 offers lower quiescent current and native bus hold, simplifying design for industrial backplanes; versus 74LVC16601DGG, it adds critical bus hold functionality and wider voltage margin for mixed-supply systems.

Availability

74ALVCH16601DGG:11 is available at Aetrix Electronics and suitable for industrial backplane routing, FPGA I/O expansion, memory subsystem isolation, and legacy interface bridging requiring stable component supply across extended temperature and voltage ranges.

Supply support for 74ALVCH16601DGG: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 delivering high-performance logic, discrete, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for industrial and automotive markets.

The 74ALVCH series targets high-speed, low-voltage bus interface applications demanding robust noise immunity, partial power-down safety, and seamless voltage-domain interoperability in dense PCB layouts.

FAQ

Does 74ALVCH16601DGG:11 support hot-swap operation?

Yes - its IOFF circuitry actively disables outputs when VCC drops to 0 V, preventing damaging backflow current from live buses into unpowered sections. This meets IEC 61000-4-2 Level 2 ESD robustness and enables safe insertion/removal in powered-backplane systems without auxiliary power sequencing.

What is the minimum setup time required for CPAB relative to LEAB?

The datasheet specifies tsu(CPAB to LEAB) = −0.2 ns at VCC = 2.3–2.7 V, meaning CPAB may transition up to 0.2 ns before LEAB goes HIGH without violating timing. At 3.3 V, tsu is −0.2 ns - indicating zero setup requirement; CPAB and LEAB can be co-timed in latch-enable mode.

Can bus hold current cause excessive power draw in high-impedance states?

No - bus hold current is tightly bounded: IBHL = 75–150 μA (LOW) and IBHH = −75 to −175 μA (HIGH) at VCC = 3.0 V. Total worst-case additional current across all 36 pins is <6.3 mA, well within the 100 mA ICC limit and negligible versus dynamic switching current.

Is the TSSOP56 package compatible with standard reflow profiles?

Yes - SOT364-1 (TSSOP56) is qualified for lead-free reflow per J-STD-020 Rev. 7, with peak temperature up to 260 °C. Its 0.5 mm pitch and 1.2 mm max height support automated optical inspection (AOI) and standard SPI measurement, and the 6.1 mm body width fits IPC-7351B footprint guidelines.