Output Timing Characteristics

Output Timing Characteristics

Non-isolated Output Performance (measured at Vcc = 5 V, Rext = 1 kΩ)

Parameter Symbol Non-isolated
Output Low Voltage VL 0.23 V
Output High Voltage VH 4.95 V
Output Threshold High Voltage VTHH 4.48 V
Output Threshold Low Voltage VTHL 0.7 V
Cycle Rise Time tR 2.6 μs
Cycle Fall Time tF 0.23 μs
Opto Current   4.8 mA

 

Opto-isolated Output Performance (measured at Vcc = 3.3 V, Rext = 200 Ω)

    Opto-isolated
Parameter Symbol Load No Load
Output Low Voltage VL 1.44 V 1.47 V
Output High Voltage VH 2.64 V 3.25 V
Output Threshold High Voltage VTHH 2.52 V 3.07 V
Output Threshold Low Voltage VTHL 1.56 V 1.65 V
Cycle Rise Time tR 5.2 μs 24 μs
Cycle Fall Time tF 28 μs 4.6 μs
Opto Current   3.08 mA 8.4 mA
Opto Isolator Delay (High to Low)   5.3 μs 5.5 μs
Opto Isolator Delay (Low to High)   12.7 μs 15.2 μs

 

Opto-isolated Output Performance (measured at Vcc = 5 V, Rext = 1 kΩ)

    Opto-isolated
Parameter Symbol Load No Load
Output Low Voltage VL 0.86 V 0.92 V
Output High Voltage VH 2.29 V 5 V
Output Threshold High Voltage VTHH 2.15 V 4.59 V
Output Threshold Low Voltage VTHL 1.00 V 1.33 V
Cycle Rise Time tR 12 μs 10.3 μs
Cycle Fall Time tF 19.6 μs 17.2 μs
Opto Current   2.68 mA 3.9 mA
Opto Isolator Delay (High to Low)   3.9 μs 4.1 μs
Opto Isolator Delay (Low to High)   26.8 μs 25.1 μs