100325 Datasheet, PDF (7/9 Pages) National Semiconductor (TI) – Low Power Hex ECL-to-TTL Translator

Test Circuits (Continued)
Note:
• V_CC = 0V, V_EE = −4.5V, V_TTL = +5V
• L1 and L2 = equal length 50Ω impedance lines
• R_T = 50Ω terminator internal to scope
• Decoupling 0.1 µF from GND to V_CC, V_EE and V_TTL
• All unused outputs are loaded with 500Ω to GND
• C_L = Fixture and stray capacitance = 50 pF
FIGURE 3. AC Test Circuit for 50 pF Loading
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