| Part Numbert | Mfg | Packt | D/C | Descriptiont | Qty | Company/Contact |
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SX500-U1A Datasheet Tel: 972 991-7177 Fax: 972 991-8588 Dayton Microchip Technology Inc. Suite 150 Two Prestige Place Miamisburg, OH 45342 Tel: 513 291-1654 Fax: 513 291-9175 Los Angeles Microchip Technology Inc. 18201 Von Karman, Suite 1090 Irvine, CA 92612 Tel: 714 263-1888 Fax: 714 263-1338 New York Microchip Technology Inc. 150 Motor Parkway, Suite 416 Hauppauge, NY 11788 Tel: 516 273-5305 Fax: 516 273-5335 San Jose Microchip Technology Inc. 2107 North First Street, Suite 590 San Jose, CA 95131 Tel: 408 436-7950 Fax: 408 436-7955 Toronto Microchip Technology Inc. 5925 Airport Road, Suite 200 Mississauga, Ontario L4V 1W1, Canada Tel: 905 405-6279 Fax: 905 405-6253 SX500-U1A Price Write protection for the SMM205 is located in a volatile register where the power-on state is defaulted to write protect. There are separate write protect modes for the configuration registers and memory. In order to remove write protection the code 55HEX iS written to the write protection register. Other codes will also enable write protection. For example, writing 59HEX will allow writes to the configuration register but not to the memory, while writing 35HEX will allow writes to the memory but not to the configuration registers. The SMM205 also features a Write Protect pin (WP#) which, when asserted, prevents writing to the configuration registers and EE memory. In addition to these two forms of write protection there is also a configuration register lock bit which, once programmed, does not allow the configuration registers to be changed. SX500-U1A on stock The EL5485C and EL5486C's input range is specified from O.lV below Vs- t0 2.25V below Vs+. The criterion for the input limit is that the output still responds cor- rectly to a small differential input signal. The differential input stage is a pair of PNP transistors, therefore, the input bias current flows out of the device. When either input signal falls below the negative input voltage limit, the parasitic PN junction formed by the substrate and the base of the PNP will turn on, resulting in a significant increase of input bias current. If one of the inputs goes above the positive input voltage limit, the output will still maintain the correct logic level as long as the other input stays within the input range. However, the propa- gation delay willincrease. When both inputs are outside the input voltage range, the output becomes unpredict- able. Large differential voltages greater than the supply voltage should be avoided to prevent damages to the input stage.
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