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FM3 MB9B500 Series - Microcontrollers - Fujitsu

FM3 MB9B500 Series - Microcontrollers - Fujitsu

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<strong>MB9B500</strong> <strong>Series</strong><br />

*3 : The output drive capability of the driver is below 0.3 V at Low-State (VOL) (to 3.6 V and 1.5 kΩ load), and<br />

2.8 V or above (to the VSS and 1.5 kΩ load) at High-State (VOH).<br />

*4 : The cross voltage of the external differential output signal (D + /D − ) of USB I/O buffer is within 1.3 V to<br />

2.0 V.<br />

D+<br />

Max 2.0V<br />

Min 1.3V<br />

D-<br />

VCRS specified range<br />

*5 : They indicate rise time (Trise) and fall time (Tfall) of the full-speed differential data signal.<br />

They are defined by the time between 10% and 90% of the output signal voltage.<br />

For full-speed buffer, Tr/Tf ratio is regulated as within 10% to minimize RFI emission.<br />

DS706-00010-1v0-E<br />

D+<br />

D-<br />

TxD+<br />

TxD-<br />

3-State Enable<br />

10%<br />

Trise<br />

90%<br />

90%<br />

Tfall<br />

Rising time Falling time<br />

Full-speed Buffer<br />

Rs = 27Ω<br />

Rs = 27Ω<br />

10%<br />

CL = 50pF<br />

CL = 50pF.<br />

105

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