41.10 Input Buffer Graphs Figure 41-34. Schmitt Trigger High Values (VIH vs. VDD) Figure 41-35. Schmitt Trigger Low Values (VIL vs. VDD) Figure 41-36. TTL Input Level Figure 41-37. SMBus 3.0 High Value (VIH vs. VDD) Figure 41-38. SMBus 3.0 Low Value (VIL vs. VDD)