74ALVCH16601DGGS

Overview

The Nexperia 74ALVCH16601DGGS is an 18-bit universal bus transceiver with 3-state outputs, housed in a TSSOP56 (SOT364-1) package. It operates within a supply voltage range of 1.65 V to 3.6 V and supports ambient temperatures from -40 °C to +85 °C. The device features bus hold inputs, low power dissipation, and direct interface capability with TTL levels. It includes IOFF circuitry for partial power-down applications to prevent backflow current. Output drive capability supports 50 Ω transmission lines at 85 °C, with a current drive of ±24 mA at 3.0 V.

Feature Summary

• Universal data flow control via dedicated output enable, latch enable, clock enable, and clock inputs for both A-to-B and B-to-A directions.
• Integrated bus hold functionality on all data inputs to maintain stable logic states without external pull-up resistors.
• IOFF circuitry enables safe partial power-down operation by disabling outputs to prevent damaging backflow currents.
• Robust ESD protection compliant with JEDEC standards, exceeding 2000 V for Human Body Model and 1000 V for Charged Device Model.

Applications

• High-density memory bus interfaces requiring latched data storage and direction control.
• Mixed-voltage system interconnects utilizing direct TTL level interfacing capabilities.
• Portable electronic designs leveraging low power consumption and partial power-down modes.

Procurement Notes

Verify the specific ordering suffix DGGS corresponds to the TSSOP56 plastic thin shrink small outline package with 56 leads. Confirm the temperature range matches the required operational environment of -40 °C to +85 °C. Ensure compatibility with the target PCB footprint for SOT364-1. Check for any recent revision updates in the product data sheet that may affect pinning or electrical characteristics before finalizing procurement.

Selection Notes

Select this component when an 18-bit wide data path with independent direction control and latching is required. The ALVCH series offers a balance of speed and power efficiency suitable for 3.3 V and 2.5 V systems. Consider the MULTIBYTE architecture for standard pin-out compatibility. Verify that the 50 Ω transmission line drive capability meets the impedance requirements of the connected traces.

Part Context

This device belongs to the Nexperia 74ALVCH family of high-speed CMOS logic devices. It is part of the universal bus transceiver category, designed for complex data routing applications. The DGGS variant specifically denotes the TSSOP56 packaging option, distinguishing it from other package types like SO or QFN available within the same logical function family.

Replacement Considerations

Direct replacements must match the 18-bit width, ALVCH logic family, and TSSOP56 package. Verify functional equivalence regarding latch enable and clock enable pin configurations. Cross-reference with Nexperia's official substitution lists for any updated versions or alternative packages offering identical electrical specifications.