PI3USB223 Datasheet, PDF (7/10 Pages) Pericom Semiconductor Corporation – USB 2.0 High-Speed and Audio Switches with Negative Signal Capability

PI3USB223
USB 2.0 High-Speed and Audio Switches
with Negative Signal Capability
Test Circuits and Timing Diagrams
V_DD
V_N
D/L
LOGIC
INPUT
V_bus
GND
V_DD
D/L
V_OUT
R_L
C_L
50Ω
35pF
C_L INCLUDES FIXTURE AND STRAY CAPACITANCE.
Note:
1. Unused input (NC or NO) must be grounded.
Figure 1. AC Test Circuit
Logic ^VIH
Input _VIL
Switch
Output _0V
Off ^50% On
VOUT
90%
tON
Off
tOFF
tr < 5ns
tf < 5ns
90%
Logic Input Waveforms inverted for
Switches that have opposite logic
Figure 2. AC Waveforms
VIN
Logic
Input
L
D/L
D
V_bus
V_OUT
RL
CL
50W
35pF
Logic
Input
VOUT
50%
tBBM
0.9 x VOUT
Figure 3. Break Before Make Interval Timing
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15-0127
7
www.pericom.com 10/27/15