ZHCSPR7E November 1998 – October 2022 CD54HC374 , CD54HC574 , CD54HCT374 , CD54HCT574 , CD74HC374 , CD74HC574 , CD74HCT374 , CD74HCT574
PRODUCTION DATA
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, ZO = 50 ?, tt < 6 ns.
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.
(1) CL includes probe
and test-fixture capacitance.
Figure 6-1 Load Circuit for 3-State
Outputs
(1) CL includes probe
and test-fixture capacitance.
Figure 6-2 Load Circuit for Push-Pull
Outputs
(1) The
greater between tPLH and tPHL is the same as
tpd.
Figure 6-3 Voltage Waveforms,
Propagation Delays for Standard CMOS Inputs
(1) The greater between
tr and tf is the same as tt.
Figure 6-5 Voltage Waveforms, Input
and Output Transition Times for Standard CMOS Inputs
(1) S1 = CLOSED; S2 =
OPEN.
(2) S1 = OPEN; s2 =
CLOSED.
(3) tPLZ and
tPHZ are the same as tdis.
(4) tPZL and
tPZH are the same as ten.
Figure 6-4 Voltage Waveforms,
Standard CMOS Inputs Propagation Delays
(1) The greater between
tPLH and tPHL is the same as
tpd.
Figure 6-6 Voltage Waveforms,
Propagation Delays for TTL-Compatible Inputs
(1) tPLZ and
tPHZ are the same as tdis.
(2) tPZL and
tPZH are the same as ten.
Figure 6-7 Voltage Waveforms,
TTL-Compatible CMOS Inputs Propagation Delays