TI HFA9P0003-5

The HFA-0003/0003L are monolithic, ultra high speed, voltage comparators. These comparators combine a low input offset voltage (1.0mV) with a low propagation delay (2.0ns) to achieve a large dynamic input range. The low offset voltage also makes these comparators ideally suited for high speed, precision analog-to-digital processing applications. The circuits have differential analog inputs, and provide complementary, ECL compatible (10K and 100K) logic outputs. The outputs are capable of supplying the current required by terminated 50Q transmission lines. Both outputs are open emitter structures, requiring external pulldown resistors. The recommended circuit is 50Q connected to -2.0V, but any equivalent ECL termination circuit may be used. The HFA-0003L is a latched version of the HFA-0003. The latch function allows the HFA-0003L to operate in sample-hold or track-hold modes, when synchronous detection is required. The Latch Enable (LE) input can be driven by a standard ECL gate. The HFA-0003L also has an additional feature, user programmable hysteresis. By connecting a resistor from the HYS pin to GND the user can select up to 20mV of input hysteresis. The HFA-0003 is pin compatible with the MAX9690, and SP9680 while providing improved performance. The HFA-0003L is pin compatible with the MAX9685, AD96685, SP9685, HCMP96850, and the VC7695 while providing improved performance.

• Low Propagation Delay (0003/0003L): 2.0/2.1ns
• Low Latch Set Up Time: 0.8ns
• Low Offset Voltage, Drift Coefficient: 1.0mV, 4μV/°C
• Wide Common Mode Range: +5.2/-2.8V
• Low Power Dissipation: 200mW
• Large Differential Input Resistance: 1MΩ
• Complementary ECL Outputs; 50Q Driving Capability
• Resistor Programmable Hysteresis with HFA-0003L
• Pin Compatible with MAX9690/9685 and AD96685
• Available in SOIC

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