UPSD325X datasheet(98/176 Pages) STMICROELECTRONICS

部件名	UPSD325X

功能描述	Flash Programmable System Devices with 8032 Microcontroller Core and 256Kbit SRAM

PDF	176 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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98 / 176 page

µPSD325X DEVICES

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Receiver Characteristics

The µPSD325X devices has a differential input re-

ceiver which is able to accept the USB data signal.

The receiver features an input sensitivity of at least

200mV when both differential data inputs are in

the range of at least 0.8V to 2.5V with respect to

its local ground reference. This is the common

mode range, as shown in Figure 45. The receiver

tolerates static input voltages between -0.5V to

3.8V with respect to its local ground reference

without damage. In addition to the differential re-

ceiver, there is a single-ended receiver for each of

the two data lines. The single-ended receivers

have a switching threshold between 0.8V and 2.0V

(TTL inputs).

Figure 45. Differential Input Sensitivity Over Entire Common Mode Range

AI06630

0.0

0.2

0.4

0.6

1.0

0.8

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

2.2

2.4

2.6

2.8

3.0

3.2

Common Mode Input Voltage (volts)

UPSD325X 数据表(PDF) 98 Page - STMicroelectronics

UPSD325X 数据表(HTML) 98 Page - STMicroelectronics

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