78Q2120C データシートの表示（PDF） - Teridian Semiconductor Corporation

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78Q2120C

10/100BASE-TX Transceiver

Teridian Semiconductor Corporation 

DIGITAL I/O CHARACTERISTICS:

Pins of type CI, CIU, CID, CIO:

PARAMETER

Input Voltage Low

Input Voltage High

Input Current

Pull-up Resistance

Pull-down Resistance

Input Capacitance

SYMBOL

Vil

Vih

Iil, Iih

Rpu

Rpd

Cin

CONDITIONS

Type CIU only

Type CID only

Pins of type CIS:

PARAMETER

Low-to-High Threshold

High-to-Low Threshold

Input Current

Input Capacitance

Pins of type COZ:

PARAMETER

Output Voltage Low

Output Voltage High

Output Transition Time

Tristate Output Leakage

Current

SYMBOL

Vt+

Vt-

Iil, Iih

Cin

CONDITIONS

SYMBOL

Vol

Voh

Tt

Iz

CONDITIONS

Iol = 4mA

Ioh = -4mA

CL = 20pF

Pins of type CO:

PARAMETER

Output Voltage Low

Output Voltage High

Output Transition Time

Pins of type CIO:

PARAMETER

Output Voltage Low

Output Voltage High

Output Transition Time

SYMBOL

Vol

Voh

Tt

CONDITIONS

Iol = 8mA

Ioh = -8mA

CL = 20pF

SYMBOL

Vol

Voh

Tt

CONDITIONS

Iol = 4mA

Ioh = -4mA

CL = 20pF

78Q2120C

10/100BASE-TX

Transceiver

MIN

NOM

MAX UNIT

0.8

V

2.0

5.5

V

-1

1

µA

38

56

78

kΩ

38

56

78

kΩ

8

pF

MIN

NOM

MAX UNIT

1.3

1.7

V

0.80

1.20

V

-1

1

µA

8

pF

MIN

NOM

MAX UNIT

0.4

V

2.4

V

6

ns

-1

1

µA

MIN

NOM

MAX UNIT

0.4

V

2.4

V

6

ns

MIN

NOM

MAX UNIT

0.4

V

2.4

V

6

ns

Page: 21 of 35

© 2009 Teridian Semiconductor Corporation

Rev 1.3

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