SN74ALVTH16601DL

Overview

The SN74ALVTH16601DL is an 18-bit universal bus transceiver manufactured by Texas Instruments. It operates at 2.5-V or 3.3-V VCC and supports mixed-mode signal operation with 5-V tolerant inputs and outputs. The device utilizes Advanced BiCMOS technology for low static power dissipation. It features high-drive capabilities of –24/24 mA at 2.5 V and –32/64 mA at 3.3 V. The component includes Ioff and power-up 3-state support for hot insertion, active bus-hold circuitry to prevent floating inputs, and Auto3-State functionality. It is housed in a 56-pin SSOP (DL) package.

Feature Summary

• Combines D-type latches and flip-flops for transparent, latched, clocked, or clock-enabled data flow modes
• Supports mixed-mode signal operation allowing 5-V input/output compatibility with 2.3-V to 3.6-V VCC
• Provides active bus-hold circuitry to maintain valid logic levels on unused or floating data inputs
• Features distributed VCC and GND pin configuration to minimize high-speed switching noise

Applications

• Hot-insertion applications requiring Ioff and power-up 3-state protection
• Mixed-mode signal environments interfacing 5-V systems with lower voltage buses
• High-drive data transmission lines utilizing distributed power and ground pins

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation, as the DL package status may have changed. Confirm that the required operating temperature range aligns with the SN74 variant specifications. Ensure all unused control inputs are properly terminated to VCC or GND during implementation to guarantee correct device operation.

Selection Notes

Select this component when 18-bit bidirectional data transfer is required between 2.5-V and 3.3-V domains with 5-V tolerance. The device is suitable for designs needing flexible data flow control through transparent, latched, or clocked modes. Consider its high-drive output currents and low static power characteristics for efficient system performance.

Part Context

This device belongs to the ALVTH logic family, designed for advanced BiCMOS applications. It integrates universal bus transceiver functions with latch and flip-flop capabilities. The SN74 variant is characterized for commercial temperatures, while the SN54 version covers military ranges. It serves as a bridge for high-density data routing in mixed-voltage digital systems.

Replacement Considerations

Public confirmed substitute part numbers: SN74ABT16601DGGR, SN74ALVT16601DL,512.