Figure 13. Propagation delay versus collector load resis-
tor
1000 Ta = 25°C, IF = 10mA
2.5
Vcc = 5 V, Vth = 1.5 V
tpHL
100
2.0
10
tpLH
1
.1
1
10
RL - Collector Load Resistor - KΩ
1.5
1.0
100
Figure 14. Propagation delay versus collector load resis-
tor
1000 Ta = 25°C, IF = 10mA
2.5
Vcc = 5 V, Vth = 1.5 V
tpHL
100
2.0
10
tpLH
1
.1
1
10
RL - Collector Load Resistor - KΩ
1.5
1.0
100
IL/ILD/ILQ74
5–4