| 摘要 |
<p>A logic converter enables a digital logic product to work with either ECL or TTL input signals without modification or reconfiguration. A first operational transconductance amplifier (10a, 20, 10b) including a first differential amplifier (20) receives digital input signals of a first logic type and converts them to digital output signals of a third logic type. A second operational transconductance amplifier (10a', 20', 10b') including a second differential amplifier (20') receives digital input signals of a second logic type and converts them to the digital output signals of the third logic type. Circuitry (10a, 10b, 10a', 10b') causes only one of the first and second differential amplifiers (20, 20') to be active at a time depending on which logic type of digital input signal is being received.</p> |
