VOLTAGE WAVEFORM

INPUT RISE AND FALL TIMES

50%

50%

10%

10%

90%

90%

VCC

0 V

tr

tf

Input

VOLTAGE WAVEFORMS

PROPAGATION DELAY AND OUTPUT TRANSITION TIMES

50%

50%

50%

10%

10%

90%

90%

VCC

VOH

VOL

0 V

tr

tf

Input

In-Phase

Output

50%

tPLH

tPHL

50%

50%

10%

10%

90%

90%

VOH

VOL

tr

tf

tPHL

tPLH

Out-of-Phase

Output

Test

Point

From Output

Under Test

CL = 50 pF

(see Note A)

LOAD CIRCUIT

7

SN54HC00, SN74HC00

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SCLS181F – DECEMBER 1982 – REVISED JULY 2016

Product Folder Links: SN54HC00 SN74HC00

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Copyright © 1982–2016, Texas Instruments Incorporated

7 Parameter Measurement Information

NOTES: A.

CL includes probe and test-fixture capacitance.

B.

Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by

generators having the following characteristics: PRR

C.

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

D.

Figure 2. Load Circuit and Voltage Waveforms