UPSD3212A Datasheet, PDF (85/163 Pages) STMicroelectronics – Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic

uPSD3212A, uPSD3212C, uPSD3212CV
Receiver Characteristics
The uPSD321x 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 41. 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 41. Differential Input Sensitivity Over Entire Common Mode Range
1.0
0.8
0.6
0.4
0.2
0.0
0.0 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)
AI06630
85/163