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The knowledge sharing point
Pinouts
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PIN IDENTIFICATION
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PIN IDENTIFICATION
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CMOS ICs: 4000...4049
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TTL ICs: 7400...7449
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A-D and D-A converters
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CMOS ICs: 40100...40999
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TTL ICs: 74100...74149
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Analog ICs
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CMOS ICs: 4050...4099
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TTL ICs: 741000...743999
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Central Processing Units and Microcontrollers
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ICs: 4300...4599
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TTL ICs: 74150...74199
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Drivers and level shifters
MAX232, MAX232A
5V RS232 transceiver.To operate, connect two capacitors to the C1 and C2 pins, one between the V- and GND, and one between V+ and GND. For the MAX232, capacitors should be 10uF, for the MAX232A 100nF is enough.
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