SCANSTA111MTX

Specialized Overview

The SCANSTA111MTX is an enhanced scan bridge multidrop addressable IEEE 1149.1 (JTAG) port manufactured by Texas Instruments. It supports a supply voltage range of 3.0 V to 3.6 V with a maximum operating current of 1.65 mA. The device operates within a temperature range of -40°C to +85°C and utilizes an nFBGA-49 package for surface-mount installation. It provides hierarchical and multidrop addressing capabilities, supporting up to 121 unique addresses via seven slot inputs. The component includes three configurable local scan ports compatible with the boundary scan standard.

Specialized Feature Summary

• Supports true IEEE 1149.1 hierarchical and multidrop addressable capability with extensive address allocation options.
• Features three IEEE 1149.1-compatible configurable local scan ports that can be bypassed or inserted individually or in groups.
• Enables transparent mode to buffer backplane pins to local scan ports via a single instruction.

Specialized Applications

• Multidrop test bus environments requiring improved test throughput
• Systems needing board removal while retaining test access to remaining modules
• Applications supporting IEEE 1149.4 analog busses via LSP active outputs

Specialized Procurement Notes

Verify the specific suffix 'MTX' against official Texas Instruments documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with existing JTAG infrastructure and address configuration requirements before procurement. Check for end-of-life status or recommended alternatives if applicable.

Specialized Selection Notes

Select this component when hierarchical JTAG scanning and multidrop addressing are required. Ensure the design accommodates the 3.0 V to 3.6 V supply range and nFBGA-49 footprint. Consider the need for up to three local scan rings and the specific address decoding logic provided by the seven slot inputs.

Specialized Part Context

The SCANSTA111 series extends the IEEE Std. 1149.1 test bus into multidrop environments. This family allows multiple boards to share a single scan chain, improving efficiency. The SCANSTA111MTX is part of this lineage, offering enhanced features like transparent mode and configurable local taps compared to basic transceivers.

Specialized Replacement Considerations

Public confirmed substitute part numbers include SCANSTA111SMX/NOPB. Verify pinout and electrical characteristics match before substitution.