Response time is a function of input over drive. See Section 8.2.3 for typical response times. The rise and fall times can be determined by the load capacitance (C_L), load/pullup resistance (R_PULLUP), and equivalent collector-emitter resistance (R_CE).

• The rise time (τ_R) is approximately τ_R ~ R_PULLUP × C_L
• The fall time (τ_F) is approximately τ_F ~ R_CE × C_L
  • R_CE can be determined by taking the slope of Figure 6-3 in its linear region at the desired temperature, or by dividing the V_OL by I_out