Test Circuitry (TTL-to-ECL)

Switching Waveforms (TTL-to-ECL)

DS100295-7

not being monitored, an external 50

Note 17: TTL and ECL force signals are brought to the DUT via 50

Ω coax lines.

Note 19: For ECL input pins, the equivelent force/sense circuitry is optional.

FIGURE 1. TTL-to-ECL AC Test Circuit

DS100295-9

FIGURE 2. TTL to ECL Transition — Propagation Delay and Transition Times

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