Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω.
For clock inputs, fmax is measured when the input duty cycle is 50%.
The outputs are measured one at a time with one input transition per measurement.
![SN74AHC1G126-Q1 Load Circuit for 3-State Outputs GUID-82DB9848-6B70-46A8-9921-508B61AE1A3E-low.gif](/ods/images/SCLS955A/GUID-82DB9848-6B70-46A8-9921-508B61AE1A3E-low.gif)
(1) CL includes probe and test-fixture capacitance.
Figure 7-1 Load Circuit for 3-State Outputs![SN74AHC1G126-Q1 Voltage Waveforms Propagation Delays GUID-2231231B-8E51-4787-944A-F1914E64A1C2-low.gif](/ods/images/SCLS955A/GUID-2231231B-8E51-4787-944A-F1914E64A1C2-low.gif)
(1) S1 = CLOSED, S2 =
OPEN.
(2) S1 = OPEN, S2 =
CLOSED.
(3) The greater between
tPZL and tPZH is the same as
ten.
(4) The greater between
tPLZ and tPHZ is the same as
tdis.
Figure 7-3 Voltage Waveforms Propagation Delays![SN74AHC1G126-Q1 Voltage Waveforms Propagation Delays GUID-196E44F9-39AE-47F9-89AA-22E024996D3A-low.gif](/ods/images/SCLS955A/GUID-196E44F9-39AE-47F9-89AA-22E024996D3A-low.gif)
(1) The greater between tPLH and tPHL is the same as tpd.
Figure 7-2 Voltage Waveforms Propagation Delays![SN74AHC1G126-Q1 Voltage Waveforms, Input and Output Transition Times GUID-C776A044-2A5E-4922-80CB-F23FB71B60F6-low.gif](/ods/images/SCLS955A/GUID-C776A044-2A5E-4922-80CB-F23FB71B60F6-low.gif)
(1) The greater between tr and tf is the same as tt.
Figure 7-4 Voltage Waveforms, Input and Output Transition Times