Figure 4. Data Rate, Pulse Duration, Propagation Delay, Output Rise-Time and Fall-Time Measurement Using a Push-Pull Driver
Figure 5. Data Rate, Pulse Duration, Propagation Delay, Output Rise-Time and Fall-Time Measurement Using an Open-Drain Driver
TEST
S1
tPZL / tPLZ (tdis)
2 × VCCO
tPHZ / tPZH (ten)
Open
Figure 6. Load Circuit for Enable-Time and Disable-Time Measurement
tPLZ and tPHZ are the same as tdis.
tPZL and tPZH are the same as ten.
VCCI is the VCC associated with the input port.
VCCO is the VCC associated with the output port.
7.2 Voltage Waveforms
Figure 7. Pulse Duration
Figure 9. Enable and Disable Times
Figure 8. Propagation Delay Times
CL includes probe and jig capacitance.
Waveform 1 in Figure 9 is for an output with internal such that the output is high, except when OE is high (see Figure 6). Waveform 2 in Figure 9 is for an output with conditions such that the output is low, except when OE is high.
All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω, dv/dt ≥ 1 V/ns.
The outputs are measured one at a time, with one transition per measurement.