AC Test Circuit and Switching Time Waveforms

DS008576-3

Note: C1 = C2 = C3 = 40 pF (including Probe and Jig Capacitance), R1 = R2 = 50

Ω,R3 = 500Ω

FIGURE 1. AC Test Circuit

DS008576-4

FIGURE 2. Propagation Delays

DS008576-5

FIGURE 3. Enable and Disable Times

DS008576-7

FIGURE 4. Differential Rise and Fall Times

DS008576-8

FIGURE 5. Propagation Delays Test Circuit

for “LS-Type” Load

DS008576-6

FIGURE 6. Differential Rise and Fall Times

Test Circuit for “LS-Type” Load

DS008576-9

FIGURE 7. Load Enable and Disable Times

Test Circuit for “LS-Type” Load

www.national.com

4