USB2412 Просмотр технического описания (PDF) - SMSC -> Microchip

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производитель

USB2412

2-Port USB 2.0 Hi-Speed Hub Controller

SMSC -> Microchip 

2-Port USB 2.0 Hi-Speed Hub Controller

Datasheet

4.2.1 Pin Capacitance

PARAMETER

Clock Input

Capacitance

Input Capacitance

Output Capacitance

Table 4.2 Pin Capacitance

LIMITS

SYMBOL MIN TYP MAX UNIT

TEST CONDITION

CXTAL

CIN

COUT

6

pF All pins except USB pins and the pins

under the test tied to AC ground.

6

pF Capacitance TA = 25°C

fc = 1 MHz

VDD33 = 3.3 V

6

pF The maximum capacitance values

include the full length of the pin pad. See

the Y dimension in Figure 6.2.

4.2.2 Package Thermal Specifications

Thermal parameters are measured or estimated for devices with the exposed pad soldered to thermal

vias in a multilayer 2S2P PCB per JESD51. Thermal resistance is measured from the die to the

ambient air.

Table 4.3 28-Pin QFN Package Thermal Parameters

PARAMETER

VELOCITY

(meters/sec)

SYMBOL

VALUE

UNIT

Thermal Resistance

Junction-to-Top-of-Package

0

ΘJA

1

0

ΨJT

1

40.3

°C/W

35.2

0.5

°C/W

0.6

SMSC USB2412

19

DATASHEET

Revision 1.3 (12-27-11)

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