MACH Switching Test Circuit February 2002 Switching Test Circuit VCC S1 R1 Output Test Point R2 S1 Specification tPD, tCO Closed tEA Z → H: Open Z → L: Closed tER H → Z: Open L → Z: Closed CL Commercial CL 35 pF (30 pF) R1 R2 300 Ω (1.6 KΩ) 390 Ω (1.6 KΩ) Measured Output Value 1.5 V H → Z: VOH – 0.5 V L → Z: VOL + 0.5 V 5 pF Notes: 1. Values in parentheses are for 3.3-V devices. 2. Measurements are taken at minimum VCC with no more than 4 blocks loading and no more than 4 I/Os switching with a maximum Commercial junction temperature of 100 °C, or Industrial junction temperature of 115 °C. www.latticesemi.com 1 switch_2