SN74LVT8996DWR

Specialty Logic Overview

The SN74LVT8996DWR is a 3.3V, 10-bit Addressable Scan Port (ASP) multi-add tap transceiver designed for IEEE Std 1149.1 (JTAG) boundary scan applications. It operates within a voltage range of 2.7 V to 3.6 V and supports an operating temperature range from -40°C to +85°C. The device features high-drive outputs capable of sourcing -32 mA and sinking 64 mA, ensuring robust signal integrity for backplane interfaces and high fan-out requirements.

Specialty Logic Feature Summary

• Supports branching of all five IEEE Std 1149.1 signals in multi-drop configurations
• Provides 10-bit address space allowing up to 1021 user-specified board addresses
• Includes dedicated global addresses for disconnect, reset, and test synchronization
• Offers 5V tolerance on both main and auxiliary TAP ports when powered at 3.3V

Specialty Logic Applications

• Complex circuit assembly testing via JTAG boundary scan
• Board-level interconnect verification in multi-drop architectures
• System-level testing requiring isolation of specific modules
• Backplane interface routing for test access ports

Specialty Logic Procurement Notes

Verify the suffix 'DWR' confirms the SOIC-20 package and tape-and-reel shipping format. Confirm RoHS compliance status matches current manufacturing standards. Ensure the design accommodates the specified 2.7 V to 3.6 V supply voltage range and thermal requirements for the -40°C to +85°C operational envelope.

Specialty Logic Selection Notes

Select this component when standard boundary scan limitations prevent direct daisy-chaining or star topology connections. It is suitable for designs requiring modular isolation where specific boards must be disconnected from the test chain without physical intervention. The high drive strength makes it appropriate for driving long traces or multiple downstream devices.

Specialty Logic Part Context

This part belongs to Texas Instruments' SCOPE family of specialty function logic ICs. It complements other JTAG components by extending scan access beyond individual chips to the board level. Unlike standard shift registers, it manages complex addressing and switching logic specifically for test infrastructure.

Specialty Logic Replacement Considerations

The SN54LVT8996 serves as the military-grade equivalent with extended temperature ranges. Verify pinout compatibility if substituting with other ASP devices, as address decoding and control logic may differ across manufacturers.