National Semiconductor . ADC0804LCN

8-bit &micro;processor-compatible A/D Converter<br>This is a CMOS 8-bit successive approximation A/D converter that uses a differential potentiometric ladder-similar to the 256R products. This converter is designed to allow operation with the NSC800 and INS8080A derivative control bus with TRI-STATE&reg; output latches directly driving the data bus. This A/D appears like memorylocations or I/O ports to the microprocessor and no interfacing logic is needed.<br><br><b>Features:</b><br><li>Resolution: 8-bit<li>Total error: &plusmn;&frac14;LSB, &plusmn;&frac12;LSB, and &plusmn;1 LSB<li>Conversion time: 100&micro;seconds<li>Compatible with 8080 &micro;P derivatives-no interfacinglogic needed- access time: 135 ns<li>Easy interface to all microprocessors, or operates "standalone"<li>Differential analog voltage inputs<li>Logic inputs and outputs meet both MOS and TTLvoltage level specifications<li>Works with 2.5V (LM336) voltage reference<li>On-chip clock generator<li>0V to 5V analog input voltage range with single 5Vsupply<li>No zero adjust required<li>20-pin DIP package<br><br><b>Applications:</b><li>80-80 Interface<li>6800 Interface<li>Directly Converting a Low-Level Signal<li>&micro;P Interfaced Comparator<li>Digitizing a Current Flow<li>Self-Clocking Multiple A/Ds<li>External Clocking<li>Low-Cost, &micro;P Interfaced, Temperature-to-DigitalConverter<li>&micro;P Interfaced Comparator with Hysteresis<li>Analog Self-Test for a System