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 interfaceApplication 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 equipmentPinout
Specifications
| Temperature Min |
-40 deg C |
| Temperature Max |
85 deg C |
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If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications.
Supply Voltage VDD −0.3V to +6.5V
Voltage on Any Analog Pin to GND −0.3V to VDD+0.3V
Voltage on Any Digital Pin to GND-0.3V to VDD+0.3V
Input Current at Any Pin (Note 4) ±10 mA
ESD Susceptibility
Human Body Model 8000V
Machine Model >250V
Soldering Temperature Refer to AN-1187
Junction Temperature +150°C
Storage Temperature −65°C to +150°C
Thermal Resistance, JA 42°C/W
Thermal Resistance, JC 14.3°C/WDescriptionThe 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.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
| SCANSTA476TSD |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
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.
Design Tools
| Title |
Size in Kbytes |
Date |
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| SCANSTA476 Evaluation Kit Overview and Instructions |
4 Kbytes |
28-Jul-2006 |
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SCANSTA476 Data Sheet
