USB2514I-HZH Standard Microsystems (SMSC), USB2514I-HZH Datasheet - Page 27

• Manufacturer Part Number: USB2514I-HZH
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB2514I-HZH

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / RoHS Status: Compliant

USB 2.0 Hi-Speed Hub Controller
Datasheet
SMSC USB251x
5.3
SYMBOL
PLLFILT
CRFILT
VDD33
SEL48
VSS
NC
BUFFER
O12
IPD
IPU
I/O
IS
Buffer Type Descriptions
I
BUFFER
TYPE
I
Input.
Input/Output.
Input with internal weak pull-down resistor.
Input with internal weak pull-up resistor.
Input with Schmitt trigger.
Output 12 mA.
Table 5.2 USB251x Pin Descriptions (continued)
POWER, GROUND, and NO CONNECTS
48 MHz Clock Input Selection
48 MHz external input clock select. When the hub is clocked from an external
clock source, this pin selects either 24 MHz or 48 MHz mode.
‘0’ = 24 MHz
‘1’ = 48 MHz
VDD Core Regulator Filter Capacitor
This pin must have a 1.0 μF (or greater) ±20% (ESR <0.1 Ω) capacitor to
VSS.
3.3 V Power
PLL Regulator Filter Capacitor
This pin must have a 1.0 μF (or greater) ±20% (ESR <0.1 Ω) capacitor to
VSS.
Ground Pad / ePad
The package slug is the only VSS for the device and must be tied to ground
with multiple vias.
No Connect
No signal or trace should be routed or attached to these pins.
Table 5.3 Buffer Type Descriptions
DATASHEET
27
DESCRIPTION
DESCRIPTION
Revision 1.1 (04-26-10)