5 Parameter Measurement Information

tPZL

tPLZ

VCC

0 V

Input

VOLTAGE WAVEFORMS

PROPAGATION DELAY TIMES

NOTES: A. CL includes probe and jig capacitance.

B. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr ≤ 3 ns, tf ≤ 3 ns.

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

50% VCC

50% VCC

Output

VOL

≈VCC

50% VCC

20% VCC

From Output

Under Test

CL = 50 pF

(see Note A)

LOAD CIRCUIT

S1

2 × VCC

R1 = 500 Ω†

R2 = 500 Ω†

† When VCC = 1.5 V, R1 = R2 = 1 kΩ

Figure 5-1. Load Circuit and Voltage Waveforms

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CD54AC05, CD74AC05

SCHS306E – JANUARY 2001 – REVISED NOVEMBER 2024

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