USB3250-ABZJ Standard Microsystems (SMSC), USB3250-ABZJ Datasheet - Page 7

• Manufacturer Part Number: USB3250-ABZJ
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB3250-ABZJ

• Lead Free Status / RoHS Status: Compliant

Hi-Speed USB Device Transceiver with UTMI Interface
SMSC USB3250
DP
DM
RBIAS
XI/XO
VDD3.3
VDD1.8
VSS
VDDA3.3
VDDA1.8
VSSA
NAME
NAME
NAME
Note 2.1
Note 2.2
DIRECTION
DIRECTION
DIRECTION
Input
Input
N/A
N/A
N/A
N/A
N/A
N/A
I/O
I/O
A Ferrite Bead (with DC resistance <.5 Ohms) is recommended for filtering between both
the VDD3.3 and VDDA3.3 supplies and the VDD1.8 and VDDA1.8 Supplies.
All VSS and VSSA are bonded to the exposed pad under the IC in the package. The
exposed pad must be connected to solid GND plane on printed circuit board.
Table 4 Biasing and Clock Oscillator Pins
ACTIVE
ACTIVE
LEVEL
LEVEL
ACTIVE
LEVEL
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Table 5 Power and Ground Pins
PRODUCT PREVIEW
Table 3 USB I/O Pins
3.3V Digital Supply. Powers digital pads. See
1.8V Digital Supply. Powers digital core.
Digital Ground. See
3.3V Analog Supply. Powers analog I/O and 3.3V analog
circuitry.
1.8V Analog Supply. Powers 1.8V analog circuitry. See
Analog Ground. See
External 1% bias resistor. Requires a 12KΩ resistor to ground.
Used for setting HS transmit current level and on-chip termination
impedance.
External crystal. 12MHz crystal connected from XI to XO.
USB Positive Data Pin.
USB Negative Data Pin.
7
Note 2.2
Note 2.2
DESCRIPTION
DESCRIPTION
DESCRIPTION
Revision 1.7 (05-11-07)
Note 2.1
Note 2.1