SL811HS
Document #: 38-08008 Rev. *A
Page 23 of 29
7.4
DC Characteristics
7.5
USB Host Transceiver Characteristics
Every VDD pin, including USB VDD, has to have a decoupling capacitor to ensure clean VDD (free of high-frequency noise) at the
chip input point (pin) itself.
The best way to do this is to connect a ceramic capacitor (0.1
µF, 6V) between the pin itself and a good ground. Capacitor leads
must be kept as short as possible. Use surface mount capacitors with the shortest traces possible (the use of a ground plane is
strongly recommended).
Parameter
Description
Min.
Typ.
Max.
VIL
Input Voltage LOW
–0.3 V
0.8V
VIH
Input Voltage HIGH (5V Tolerant I/O)
2.0 V
6.0V
VOL
Output Voltage LOW (IOL = 4 mA)
0.4V
VOH
Output Voltage HIGH (IOH = –4 mA)
2.4 V
IOH
Output Current HIGH
4 mA
IOL
Output Current LOW
4 mA
ILL
Input Leakage
±1
µA
CIN
Input Capacitance
10 pF
ICC
[16]
Supply Current (VDD) inc USB @FS
21 mA
25 mA
ICCsus1
[17]
Supply Current (VDD) Suspend w/Clk & Pll Enb
4.2 mA
5 mA
ICCsus2
[18]
Supply Current (VDD) Suspend no Clk & Pll Dis
50
µA
60
µA
IUSB
Supply Current (VDD1)
10 mA
IUSBSUS
Transceiver Supply Current in Suspend
10
µA
Parameter
Description
Min.
Typ.[19]
Max.
VIHYS
Differential
Input Sensitivity (Data+, Data–)
0.2V
200 mV
VUSBIH
USB Input Voltage HIGH Driven
2.0
VUSBIL
USB Input Voltage LOW
0.8V
VUSBOH
USB Output Voltage HIGH
2.0V
VUSBOL
USB Output Voltage LOW
0.0V
0.3 V
ZUSBH
[20]
Output Impedance HIGH STATE
36 Ohms
42 Ohms
ZUSBL
[20]
Output Impedance LOW STATE
36 Ohms
42 Ohms
IUSB
Transceiver Supply p-p Current (3.3V)
10 mA
@ FS
Notes:
16. ICC measurement includes USB Transceiver current (IUSB) operating at Full Speed.
17. ICCsus1 measured with 12-MHz Clock Input and Internal PLL enabled. Suspend set –(USB transceiver and internal Clocking disabled).
18. ICCsus2 measured with external Clock, PLL disabled, and Suspend set. For absolute minimum current consumption, ensure that all inputs to the device are at
static logic level.
19. All typical values are VDD = 3.3V and TAMB= 25°C.
20.
=86%; impedance values includes an external resistor of 24 Ohms ± 1% (SL811HS revision 1.2 requires external resistor values of 33 Ohms ±1%).
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