Nexperia USA Inc. 74ALVCH162601DGG,1

Overview

74ALVCH162601DGG,1 from Nexperia is an 18-bit universal bus transceiver with integrated 30 Ω termination resistors, bus hold inputs, and 3-state outputs, operating from 1.65 V to 3.6 V supply. It supports bidirectional A↔B data flow controlled by dual clock/latch/enable logic (CPAB/CPBA, LEAB/LEBA, OEAB/OEBA), features IOFF partial power-down protection, and is rated for −40 °C to +85 °C industrial operation.

For engineers reviewing the 74ALVCH162601DGG,1 datasheet, 74ALVCH162601DGG,1 pinout, 74ALVCH162601DGG,1 application, or 74ALVCH162601DGG,1 equivalent, this device serves as a high-integrity, low-noise bidirectional interface for parallel bus systems requiring on-die termination, latch-controlled data staging, and robust static immunity in mixed-voltage digital subsystems.

Technical Context

The device implements two independent 18-bit bidirectional data paths (A-to-B and B-to-A), each governed by separate clock (CPAB/CPBA), latch enable (LEAB/LEBA), clock enable (CEAB/CEBA), and output enable (OEAB/OEBA) controls. Its MULTIBYTE™ flow-through pinout minimizes signal skew and routing complexity across dense PCB layouts.

Bus hold circuitry maintains valid logic states on all 36 I/O pins (A0–A17, B0–B17) during floating conditions, eliminating external pull-ups. The integrated 30 Ω series termination resistors dampen reflections on high-speed parallel buses without requiring discrete components.

Key Specifications

Pinout & Package

TSSOP56 plastic thin shrink small outline package (SOT364-1), 56-pin, body width 6.1 mm, 0.5 mm pitch, 1.2 mm max height - optimized for high-density PCB assembly with low inductance via multiple VCC/GND pins (4× VCC, 8× GND).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74ALVTH162601DGGR, the 74ALVCH162601DGG,1 offers broader low-voltage IOFF operation and stronger bus hold-critical for 1.65 V systems. Versus 74LVC16245ADGG,118, it delivers verified signal integrity out-of-box via integrated termination, reducing validation effort and PCB rework risk.

Availability

74ALVCH162601DGG,1 is available at Aetrix Electronics and suitable for industrial backplane interconnect, memory subsystem buffering, ATE resource arbitration, and legacy system upgrade bridge applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for 74ALVCH162601DGG,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 leading global semiconductor manufacturer headquartered in Nijmegen, Netherlands, specializing in high-performance, energy-efficient logic, analog, and discrete components for industrial, automotive, and consumer markets.

The 74ALVCH162601 belongs to Nexperia's Advanced Low-Voltage CMOS (ALVCH) logic family, engineered specifically for noise-sensitive, high-density parallel bus applications demanding integrated termination, robust static immunity, and seamless multi-voltage interoperability.

FAQ

What is the minimum supply voltage at which IOFF protection remains active?

IOFF protection is fully functional across the entire specified supply range of 1.65 V to 3.6 V. When VCC drops below 0.8 V, the output drivers disable and high-impedance state is maintained; no backflow current occurs even at VCC = 0 V, satisfying JEDEC JESD78 Class II Level B latch-up immunity requirements.

Can the 30 Ω termination resistors be bypassed for use in non-terminated bus configurations?

No-the 30 Ω resistors are monolithically integrated in series with each I/O path and cannot be disabled or bypassed. They are permanently present on all 36 pins (A0–A17, B0–B17). For non-terminated applications, consider the pin-compatible 74LVC16245ADGG,118, which lacks internal termination but offers identical logic functionality.

How does bus hold behavior interact with 3-state output control?

Bus hold remains active on all inputs (A0–A17, B0–B17) regardless of OEAB/OEBA state. When outputs are in high-impedance (OE = HIGH), bus hold maintains the last valid logic level on the corresponding I/O pin. This prevents floating states during bus contention resolution or idle periods without external biasing.

Is the MULTIBYTE™ pinout compatible with standard PCB footprint libraries for TSSOP56 packages?

Yes-the 74ALVCH162601DGG,1 uses the standardized SOT364-1 (TSSOP56) footprint defined in JEDEC MO-153. Pin 1 index location, 0.5 mm pitch, and 6.1 mm body width match industry-standard TSSOP56 land patterns; no custom footprint is required for assembly or CAD library integration.