SCANSTA111MTX/NOPB

Specialized Overview

The SCANSTA111MTX/NOPB is an Enhanced SCAN Bridge Multidrop Addressable IEEE 1149.1 (JTAG) Port manufactured by Texas Instruments. It operates within a supply voltage range of 3 V to 3.6 V, with a maximum operating current of 1.65 mA. The device supports a minimum operating temperature of -40°C and a maximum of +85°C. It is housed in a 49-pin nFBGA package designed for surface mount installation. The component facilitates hierarchical and multidrop addressing capabilities, supporting up to 121 unique addresses across seven slot inputs.

Specialized Feature Summary

• Supports true IEEE 1149.1 hierarchical and multidrop addressable capability with extensive addressing options including broadcast and multi-cast groups.
• Provides three IEEE 1149.1-compatible configurable local scan ports that can be bypassed, selected individually, or combined serially.
• Features transparent mode for buffering backplane pins to local scan ports and LSP active outputs for analog bus support.

Specialized Applications

• Multidrop test bus environments requiring improved test throughput
• Systems needing board removal while retaining test access to remaining modules
• FPGA programming via general purpose local port pass-through bits

Specialized Procurement Notes

Verify the specific suffix 'MTX' against official Texas Instruments documentation to confirm packaging details such as tray quantities or reel specifications. Ensure the NOPB designation confirms lead-free status and RoHS compliance for your target market regulations. Cross-reference the pinout and thermal characteristics with the latest datasheet revision to avoid integration errors during PCB design.

Specialized Selection Notes

Select this component when designing systems that require scalable JTAG connectivity across multiple boards without complex wiring. It is suitable for applications needing independent control of local scan chains and support for IEEE 1149.4 analog buses. Consider the 49-pin nFBGA package constraints and the 3V-3.6V power supply requirements during system architecture planning.

Specialized Part Context

This part belongs to the SCANSTA111 series, which extends the IEEE 1149.1 test bus into multidrop environments. It allows for the interrogation of specific slots and supports live insertion or withdrawal of boards. The device includes features like a 32-bit TCK counter and a 16-bit LFSR signature compactor for enhanced diagnostic capabilities.

Specialized Replacement Considerations

The SCANSTA112 is a related component offering similar multidrop capabilities but may differ in port count or specific interface features. Verify functional compatibility regarding address decoding and local scan port configuration before substitution.