The Al - AO bits in the ID byte is the internal slave address. The physical device address is defined by the state of the Al - AO input pins. The slave address is externally specified by the user. The X9271 compares the serial data stream with the address input state; a successful compare of both address bits is required for the X9271 to successfully continue the command sequence. Only the device which slave address matches the incoming device address sent by the master executes the instruction. The Al - AO inputs can be actively driven by CMOS input signals or tied to VCC or VSS.
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MRF1550F on stock| Symbolter Rating Unit |
| 1 0PR | -40 to +100 | aC | Operating Temperature |
| TSTG | -40 to +100 | aC | Storage Temperature |
| TSOL | 260 for 5 sec | aC | Lead Soldering Time |
| IF | 30 | mA | Continuous Forward Current |
| IF | 160 | mA | Peak Forward Current (f = 1.0 KHz, Duty Factor = 1/10) |
| VR | 5 | V | Reverse Voltage |
| PD | 85 | mW | Power Dissipation |
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