Cypress SL811HS Manual De Usuario

Document 38-08008 Rev. *D

Page 25 of 32

Every V

DD

 pin, including USB V

DD

, must have a decoupling

capacitor to ensure clean V

DD

 (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. Keep

capacitor leads as short as possible. Use surface mount

capacitors with the shortest traces possible (the use of a
ground plane is strongly recommended).

This product was tested as compliant to the USB-IF specifi-
cation under the test identification number (TID) of 40000689
and is listed on the USB-IF’s integrators list.

V

IL

Input Voltage LOW

 –0.3V

0.8V

V

IH

Input Voltage HIGH (5V Tolerant I/O)

2.0V

6.0V

V

OL

Output Voltage LOW (I

OL

 = 4 mA)

0.4V

V

OH

Output Voltage HIGH (I

OH

 = –4 mA)

2.4V

I

OH

Output Current HIGH

4 mA

I

OL

Output Current LOW

4 mA

I

LL

Input Leakage

±1 

μA

C

IN

Input Capacitance 

10 pF

I

CC

Supply Current (V

DD

) inc USB @FS

21 mA

25 mA 

I

CCsus1

Supply Current (V

DD

) Suspend w/Clk & Pll Enb 

4.2 mA

5 mA

I

CCsus2

Supply Current (V

DD

) Suspend no Clk & Pll Dis

50 

μA

60 

μA

I

USB

Supply Current (V

DD1

)

 10 mA

I

USBSUS

Transceiver Supply Current in Suspend

10 

μA

V

IHYS

Differential
Input Sensitivity (Data+, Data–)

0.2V

200 mV

V

USBIH

USB Input Voltage HIGH Driven

2.0V

V

USBIL

USB Input Voltage LOW

0.8V

V

USBOH

USB Output Voltage HIGH 

2.0V

V

USBOL

USB Output Voltage LOW 

0.0V

0.3V

Z

USBH

Output Impedance HIGH STATE 

36 Ohms

42 Ohms

Z

USBL

Output Impedance LOW STATE

36 Ohms

42 Ohms

I

USB

Transceiver Supply p-p Current (3.3V)

10 mA

@ FS 

13. I

CC

 measurement includes USB Transceiver current (I

USB

) operating at full speed. 

14. I

CCsus1

 measured with 12 MHz Clock Input and Internal PLL enabled. Suspend set –(USB transceiver and internal Clocking disabled).

15. I

CCsus2

 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.

16. All typical values are V

DD

 = 3.3V and T

AMB

= 25°C.

17.

Z

USBX

 impedance values includes an external resistor of 24 Ohms ± 1% (SL811HS revision 1.2 requires external resistor values of 33 Ohms ±1%).