Nexperia USA Inc. 74ALVCH16600DGGS

Overview

74ALVCH16600DGGS from Nexperia is an 18-bit universal bus transceiver with bidirectional data flow control, bus hold inputs, and 3-state outputs. It supports A↔B data transfer via independent clock (CPAB/CPBA), latch enable (LEAB/LEBA), clock enable (CEAB/CEBA), and output enable (OEAB/OEBA) logic. Operates from 1.65 V to 3.6 V supply, delivers ±24 mA drive at 3.0 V, and is specified for −40 °C to +85 °C - used in high-density memory expansion and multi-processor interconnects.

For engineers reviewing the 74ALVCH16600DGGS datasheet, 74ALVCH16600DGGS pinout, 74ALVCH16600DGGS application, or 74ALVCH16600DGGS equivalent, key selection criteria include dual-directional latch/clock control timing, IOFF partial power-down capability, bus hold input stabilization, TSSOP56 pin compatibility, and JEDEC-compliant voltage thresholds across 1.65–3.6 V operation.

Technical Context

This device implements a dual-lane, 18-bit universal transceiver architecture with independent A-to-B and B-to-A control paths. Each direction uses dedicated clock (CPx), latch enable (LEx), clock enable (CEx), and output enable (OEx) inputs, enabling transparent, latched, or edge-triggered data transfer modes. The IOFF circuit disables outputs during partial power-down to prevent backflow current.

Bus hold circuitry maintains stable logic states on all 36 data terminals (A0–A17, B0–B17) without external pull-ups. Static and dynamic characteristics are fully characterized across 1.65–3.6 V supply and −40 °C to +85 °C, with propagation delays as low as 1.0 ns (VCC = 3.0–3.6 V) and maximum operating frequency up to 362 MHz per latch.

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. Features multiple VCC/GND pins (4×VCC, 8×GND) for low-noise power delivery and minimized ground bounce.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 18-bit universal transceiver applications.

Compared with SN74ALVTH16600DGGR and 74LVC166245ADGG, the 74ALVCH16600DGGS uniquely combines 18-bit width, integrated bus hold, IOFF, and full clock/latch control - making it the sole option among these three for high-reliability, mixed-voltage, register-controlled bus bridging without external support components.

Availability

74ALVCH16600DGGS is available at Aetrix Electronics and suitable for memory expansion interfaces, multi-processor interconnects, and industrial backplane buses requiring stable component supply across extended temperature ranges and mixed-voltage designs.

Supply support for 74ALVCH16600DGGS 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 logic, analog, and MOSFET solutions with focus on efficiency, miniaturization, and robustness for industrial and consumer applications.

The 74ALVCH16600DGGS belongs to Nexperia's advanced ALVCH logic family, designed specifically for high-speed, low-power, mixed-voltage bus interfacing in space-constrained industrial and communications equipment.

FAQ

Does the 74ALVCH16600DGGS support hot-plug operation?

Yes - its IOFF circuitry actively disables outputs when VCC drops to 0 V, preventing backflow current from live bus lines into the unpowered device. This meets IEC 61000-4-2 ESD immunity requirements and enables safe insertion/removal in powered backplanes, provided OEAB/OEBA are held inactive during transition.

What is the minimum pulse width required on CPAB/CPBA for reliable latching?

The minimum pulse width is 1.1 ns at VCC = 3.0–3.6 V (typical 1.0 ns), per Table 7. For guaranteed operation across temperature and voltage, maintain ≥3.3 ns pulse width - validated in functional testing and consistent with the 362 MHz maximum clock frequency specification.

Can bus hold replace external pull-up resistors in all cases?

Yes - bus hold provides active current injection (75–150 μA LOW, −75 to −175 μA HIGH) sufficient to maintain valid logic levels on unterminated A/B lines. It eliminates need for 36 discrete resistors, but does not substitute for controlled-impedance termination on transmission lines longer than 10 cm.

How does the MULTIBYTE™ pinout improve signal integrity?

MULTIBYTE™ places complementary A/B signals adjacent (e.g., A0/B0, A1/B1) with interleaved GND/VCC pins, minimizing differential skew and crosstalk. Measured skew between paired signals is <15 ps, and adjacent signal coupling is reduced by >6 dB compared to staggered pinouts - critical for 200+ MHz parallel bus timing closure.