Features Eight selectable Analog input channels Analog full-scale input range 0V to VDD Typical accuracy of 2 mV at maximum VDD Very low power operation Small package footprint in 16-lead, 5 x 5 x 0.8 mm LLP Single +2.7V to +5.5V supply operation IEEE 1149.1 (JTAG) compliant interface Description The SCANSTA476 is a low power, Analog Voltage Monitor used for sampling or monitoring up to 8 analog/mixed-signal input channels. Analog Voltage Monitors are valuable during product development, environmental test, production, and field service for verifying and monitoring power supply and reference voltages. In a supervisory role, the 'STA476 is useful for card or system-level health monitoring and prognostics applications. Instead of requiring an external microcontroller with a GPIO interface, the 'STA476 features a common IEEE 1149.1 (JTAG) interface to select the analog input, initiate a measurement, and access the results - further extending the capabilities of an existing JTAG infrastructure. The SCANSTA476 uses the VREF input as a reference. This enables the SCANSTA476 to operate with a full-scale input range of 0 to VDD, which can range from +2.7V to +5.5V. The SCANSTA476 is packaged in a 16-lead non-pullback LLP package that provides an extremely small footprint for applications where space is a critical consideration. This product operates over the industrial temperature range of -40°C to +85°C. Applications Measurement of Point Voltages Real-time Signal Monitoring System Health Monitoring and Prognostics Debug, Environmental Test, Production Test, Field Service Supplement In-Circuit Tester (ICT) access Vital in Servers, Computing, Telecommunication and Industrial equipment Essential in Medical, Data Storage, and Networking equipment

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Datasheets

Title		Size	Date	Other Language
	SCANSTA476 Eight Input IEEE 1149.1 Analog Voltage Monitor	502 Kbytes	16-Aug-05

Other Technical Documents

Title		Type	Date
	JTAG Advanced Capabilities and System Design	Signal Path Designer	2009-03-19

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
SCANSTA476TSD/NOPB SCANSTA476TSD RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 1000 DIGI-KEY Worldwide 1768 FARNELL Europe and Asia 658 MOUSER Worldwide 966 TAYLOR Americas 1000	$2.25 each at 1K+ pcs	reel of 1000

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for SCANSTA476.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for SCANSTA476 is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
SCANSTA476TSD/NOPB SCANSTA476TSD	64.927 65.192	LLP	16	3 3	260 260	Detail	Download	N/A	NS UZXYTT STA476T

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for SCANSTA476.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for SCANSTA476 is located at RoHS Status.

CAD Symbols and Models Download SCANSTA476 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
SCANSTA476TSD	CMOS7	0	21301	0	0	1584000	3	449464325

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for SCANSTA476.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for SCANSTA476 is located at RoHS Status.