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 clock (CPAB/CPBA), latch enable (LEAB/LEBA), clock enable (CEAB/CEBA), and output enable (OEAB/OEBA) signals. Operates from 1.65 V to 3.6 V supply, features IOFF partial power-down protection, and is rated for −40 °C to +85 °C - used in high-density memory expansion and multi-processor interconnects.

For engineers reviewing the 74ALVCH16601DGG,11 datasheet, 74ALVCH16601DGG,11 pinout, 74ALVCH16601DGG,11 application, or 74ALVCH16601DGG,11 equivalent, this page delivers verified functional behavior, TSSOP56 package mapping, timing-critical setup/hold values, bus hold current specs, and real-world interface constraints for synchronous bus bridging in industrial control backplanes.

Technical Context

This device implements dual-directional 18-bit data routing with independent control logic per direction: LEAB/CPAB/CEAB/OEAB govern A-to-B flow; LEBA/CPBA/CEBA/OEBA govern B-to-A flow. Each direction supports transparent mode (LE HIGH), latched mode (LE LOW + CP edge-triggered storage), and high-impedance output control (OE LOW).

IOFF circuitry disables outputs during partial power-down, blocking reverse current when VCC = 0 V. Bus hold inputs maintain valid logic states on floating A/B pins (IBHL = 75–150 μA at 3.0 V, IBHH = −75 to −175 μA), eliminating external pull resistors in hot-swap or low-power standby scenarios.

Key Specifications

Pinout & Package

TSSOP56 package (SOT364-1): 56-pin plastic thin shrink small outline, 6.1 mm body width, 0.5 mm pitch, 1.2 mm max height - optimized for high I/O density and thermal dissipation in compact PCB layouts.

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 trades higher drive strength for integrated bus hold and tighter timing control; versus 74LVC166245ADGG,118, it adds two data bits and full clocked latch capability at modest speed penalty - making it optimal for synchronous, high-reliability interconnects.

Availability

74ALVCH16601DGG,11 is available at Aetrix Electronics and suitable for industrial backplane interconnects, memory expansion subsystems, and multi-processor synchronization requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

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 headquartered in Nijmegen, Netherlands, specializing in high-volume logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74ALVCH series targets high-speed, low-voltage bus interface applications in space-constrained industrial and communications equipment, emphasizing signal integrity, power efficiency, and robustness across extended temperature ranges.

FAQ

What is the minimum setup time required for CPAB relative to LEAB when latching A-port data?

The minimum set-up time (tsu) for An relative to CPAB is 1.7 ns at VCC = 3.3 V, and for An relative to LEAB it is 1.1 ns under the same condition. These values ensure reliable capture of A-port data into the internal latch on the rising edge of CPAB when LEAB is LOW and CEAB is LOW - critical for synchronous data transfer in tightly timed control loops.

Does the 74ALVCH16601DGG,11 support true bidirectional operation without external direction control logic?

Yes - it supports autonomous bidirectional operation using separate control inputs: OEAB/LEAB/CPAB/CEAB manage A→B flow, while OEBA/LEBA/CPBA/CEBA manage B→A flow. No external direction line is needed; each direction operates independently with its own clock and enable hierarchy, enabling full-duplex bus arbitration in master-slave configurations.

How does the bus hold feature behave during power-up or brown-out conditions?

Bus hold remains active across the full VCC range (1.65 V to 3.6 V) and retains valid logic states even during slow-ramp power-up or brown-out events. IBHL and IBHH currents scale with VCC, ensuring stable input retention down to 1.65 V - preventing metastability or spurious toggling on floating A/B lines before system initialization completes.

Can the 74ALVCH16601DGG,11 be used in a 5 V system environment?

No - absolute maximum VCC is +4.6 V, but recommended operating VCC is strictly 1.65 V to 3.6 V. Input voltage limits are VI = −0.5 V to VCC + 0.5 V, so applying 5 V logic signals violates the input rating. Use a level-shifting buffer (e.g., TXB0304) or select a 5 V-tolerant transceiver like 74LVT166245 for direct 5 V interface.