SCAA124 April   2015 RM41L232 , RM42L432 , RM44L520 , RM44L920 , RM46L430 , RM46L440 , RM46L450 , RM46L830 , RM46L840 , RM46L850 , RM46L852 , RM48L530 , RM48L540 , RM48L730 , RM48L740 , RM48L940 , RM48L950 , RM48L952 , RM57L843 , TMS570LC4357 , TMS570LC4357-EP , TMS570LC4357-SEP , TMS570LS0232 , TMS570LS0332 , TMS570LS0432 , TMS570LS0714 , TMS570LS0714-S , TMS570LS0914 , TMS570LS1114 , TMS570LS1115 , TMS570LS1224 , TMS570LS1225 , TMS570LS1227 , TMS570LS2124 , TMS570LS2125 , TMS570LS2134 , TMS570LS2135 , TMS570LS3134 , TMS570LS3135 , TMS570LS3137

 

  1.   Latch-Up
    1.     Trademarks
    2. 1 Introduction
      1. 1.1 What is Latch-Up?
      2. 1.2 Latch-Up Model
      3. 1.3 Mitigating Latch-Up
    3. 2 Latch-Up Testing Methods
      1. 2.1 Latch-Up Standard
      2. 2.2 Current Injection Stress
      3. 2.3 Over-Voltage Stress
      4. 2.4 Signal Latch-Up
      5. 2.5 Analog Product Testing
        1. 2.5.1 Maximum Stress Voltage for Latch-Up (MSV)
        2. 2.5.2 Stressing Special Pins
        3. 2.5.3 High Voltage Testing
    4. 3 References

2 Latch-Up Testing Methods

Latch-Up stress methods prior to the late 1980’s were accomplished on bench set-ups with the use of curve tracers or other bench set-ups. In 1988, an industry team released the first Latch-Up standard, JESD17. This standard proposed a method of characterization based mostly on digital CMOS circuit concepts. In 1997, the JEDEC team proposed another Latch-Up standard (JESD78) that built on JESD17 adding more detail to the stress and giving a robustness criteria for the first time. JESD78 remains a standard mostly based on digital CMOS technology and test methods. The current revision, Revision D, does not have a robustness criterion; it has reverted to being a characterization standard. Analog products do not necessarily fit well into the methodology since there are generally specific bias values that work outside a zero or one condition. There are efforts underway on the JEDEC Latch-Up team to add analog methodology, which will likely be completed late in 2015.