The Motorola MC6821S is a 40-pin CERDIP parallel I/O port IC with a commercial temperature grade and a supply voltage range of 4.75 to 5.25V. It operates within a temperature range of 0 to 70°C and has a maximum clock frequency of 1MHz. This IC features 16 I/O lines and an 8-bit external data bus width, making it suitable for general-purpose applications.
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| Max Operating Temperature | 70 |
| Number of Terminals | 40 |
| Min Operating Temperature | 0 |
| Terminal Position | DUAL |
| JEDEC Package Code | R-GDIP-T40 |
| Width | 15.24 |
| Length | 52.275 |
| Temperature Grade | COMMERCIAL |
| Supply Voltage-Nom | 5 |
| Supply Voltage-Min | 4.75 |
| Supply Voltage-Max | 5.25 |
| Clock Frequency-Max | 1 |
| Number of Ports | 2 |
| uPs/uCs/Peripheral ICs Type | PARALLEL IO PORT, GENERAL PURPOSE |
| Number of I/O Lines | 16 |
| External Data Bus Width | 8 |
| RoHS | No |
| Eccn Code | EAR99 |
| HTS Code | 8542.39.00.01 |
| REACH | unknown |
| Military Spec | False |
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