Test Circuits
FIGURE 1. AC Test Circuit
Notes:
VCC, VCCA = +2V, VEE = −2.5V
L1 and L2 = Equal length 50Ω impedance lines
RT = 50Ω terminator internal to scope
Decoupling 0.1 µF from GND to VCC and VEE
All unused outputs are loaded with 50Ω to GND
CL = Fixture and stray capacitance ≤ 3 pF
FIGURE 2. Toggle Frequency Test Circuit
7
www.fairchildsemi.com