6 Parameter Measurement Information

Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, Z_O = 50 Ω, t_t < 6 ns.

For clock inputs, f_max is measured when the input duty cycle is 50%.

The outputs are measured one at a time with one input transition per measurement.

(1) C_L includes probe and test-fixture capacitance.

Figure 6-1 Load Circuit for 3-State Outputs

(1) The greater between t_PLH and t_PHL is the same as t_pd.

Figure 6-2 Voltage Waveforms, Propagation Delays for Standard CMOS Inputs

(1) The greater between t_r and t_f is the same as t_t.

Figure 6-4 Voltage Waveforms, Input and Output Transition Times for Standard CMOS Inputs

(1) S1 = CLOSED; S2 = OPEN.

(2) S1 = OPEN; s2 = CLOSED.

(3) t_PLZ and t_PHZ are the same as t_dis.

(4) t_PZL and t_PZH are the same as t_en.

Figure 6-3 Voltage Waveforms, Standard CMOS Inputs Propagation Delays

(1) The greater between t_PLH and t_PHL is the same as t_pd.

Figure 6-5 Voltage Waveforms, Propagation Delays for TTL-Compatible Inputs

(1) t_PLZ and t_PHZ are the same as t_dis.

(2) t_PZL and t_PZH are the same as t_en.

Figure 6-6 Voltage Waveforms, TTL-Compatible CMOS Inputs Propagation Delays