What this crosspoint switch does on the bench
The Texas Instruments DS90CP22MT/NOPB is a single-supply crosspoint switch that routes one input to either of two outputs — a 1 x 2:2 configuration. It lives in a 16-TSSOP surface-mount package and runs on a 3V to 3.6V rail. The scorch mark on a dead board might not point here first, but when you lose a signal path on a multi-drop bus, this is the IC that failed. It is rated for the industrial temperature range, -40°C to 85°C, so it belongs in outdoor telecom cabinets or factory-floor controllers, not just an office switch.
Supply and temperature — what they mean for the BOM
The 3V to 3.6V single-supply range ties this part to a 3.3V rail — common in LVCMOS and LVTTL logic families. If your board runs a 2.5V or 5V digital bus, you will need a level translator or a different crosspoint. The -40°C to 85°C operating range covers most industrial environments; no need to derate for an unheated enclosure in a temperate climate.
Packaging — tube, not tape
The DS90CP22MT/NOPB ships in a tube, not tape-and-reel. If your pick-and-place line expects reels, factor in a tube-to-reel transfer or order the tape-and-reel variant if one exists. The 16-TSSOP body is 4.40 mm wide — standard for this package family.