Smsc LAN9512 User Manual download pdf (Page 40)

USB Hub with Integrated 10/100 Ethernet Controller

Datasheet

Revision 1.0 (04-20-09) 40 SMSC LAN9512

DATASHEET

4.4 DC Specifications

Note 4.5 This specification applies to all inputs and tri-stated bi-directional pins. Internal pull-down

and pull-up resistors add +/- 50uA per-pin (typical)

Table 4.2 I/O Buffer Characteristics

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

IS Type Input Buffer

Low Input Level

High Input Level

Negative-Going Threshold

Positive-Going Threshold

SchmittTrigger Hysteresis

IHT

- V

ILT

)

Input Leakage

= VSS or VDD33IO)

Input Capacitance

ILI

IHI

ILT

IHT

HYS

-0.3

1.01

1.39

345

-10

1.18

1.6

420

3.6

1.35

1.8

485

2.5

Schmitt trigger

Note 4.5

IS_5V Type Input Buffer

Low Input Level

High Input Level

Negative-Going Threshold

Positive-Going Threshold

SchmittTrigger Hysteresis

IHT

- V

ILT

)

Input Leakage

= VSS or VDD33IO)

Input Leakage

= 5.5V)

Input Capacitance

ILI

IHI

ILT

IHT

HYS

-0.3

1.01

1.39

345

-10

1.18

1.6

420

5.5

1.35

1.8

485

120

3.5

Schmitt trigger

Note 4.5

Note 4.5, Note 4.6

O8 Type Buffers

Low Output Level

High Output Level

VDD33IO - 0.4

0.4 V

= 8mA

= -8mA

OD8 Type Buffer

Low Output Level V

0.4 V I

= 8mA

O12 Type Buffers

Low Output Level

High Output Level

VDD33IO - 0.4

0.4 V

= 12mA

= -12mA

OD12 Type Buffer

Low Output Level V

0.4 V I

= 12mA

ICLK Type Buffer (XI Input)

Low Input Level

High Input Level

ILI

IHI

-0.3

1.4

0.5

3.6

Note 4.7

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