SN74ACT1073NS

Specialty Logic Overview

The SN74ACT1073NS is a 16-bit bus-termination array with an integrated bus-hold function, designed to ensure defined voltage levels on floating bus lines in CMOS systems. It operates within a supply voltage range of 4.5 V to 5.5 V and accepts input voltages up to 5.5 V. The device features low power consumption similar to standard CMOS logic. It includes internal low-impedance diodes that clamp undershoots and overshoots caused by line reflections, thereby reducing signal integrity issues. The bus-hold mechanism utilizes a high-resistance feedback path to maintain the last valid logic state when drivers enter a high-impedance state.

Specialty Logic Feature Summary

• Integrated bus-hold function maintains bus lines at the last valid logic state without external pull-up or pull-down resistors
• Low-impedance diodes clamp voltage undershoots and overshoots caused by transmission line reflections
• Inputs are TTL-voltage compatible while maintaining low power consumption characteristics
• Center-pin VCC and GND configuration minimizes high-speed switching noise

Specialty Logic Applications

• Terminating output of driving devices in CMOS systems
• Holding inputs of driven devices at previous logic levels during high-impedance states
• Ensuring signal integrity on floating bus lines

Specialty Logic Procurement Notes

Verify the specific suffix against the manufacturer's current ordering information to confirm package type and production status. Confirm RoHS compliance and lead finish details via the official datasheet or packaging addendum before procurement. Ensure the operating temperature range meets system requirements.

Specialty Logic Selection Notes

Select this component for applications requiring termination of 16-bit buses where floating lines must be prevented without adding discrete resistors. Verify that the 4.5 V to 5.5 V supply voltage range aligns with the system design. Consider the SOP-20 package dimensions for PCB layout constraints.

Specialty Logic Part Context

This device belongs to the Texas Instruments SN74ACT series of advanced CMOS logic components. It is specifically engineered as a bus-termination array rather than a standard logic gate. The integration of bus-hold functionality distinguishes it from basic buffer or driver ICs, providing a specialized solution for managing high-impedance states in digital bus architectures.

Specialty Logic Replacement Considerations

Check the TI Package Option Addendum for active production statuses of variants such as SN74ACT1073DWR or SN74ACT1073NSR. Verify pinout compatibility and electrical specifications if substituting with other bus-holder devices.