SN74CBTU4411

11BIT 1OF4 FET MULTIPLEXER/DEMULTIPLEXER

1.8V DDRII SWITCH WITH CHARGE PUMP AND PRECHARGED OUTPUTS

SCDS192 − APRIL 2005

3

POST OFFICE BOX 655303

FUNCTION TABLES

INPUTS

INPUT/OUTPUT

FUNCTION

EN

DQS_EN

S1

S0

INPUT/OUTPUT

Hn

FUNCTION

L

L

L

L

0Dn

Hn = 0Dn

1Dn, 2Dn, 3Dn connected to VBIAS

L

L

L

H

1Dn

Hn = 1Dn

0Dn, 2Dn, 3Dn connected to VBIAS

L

L

H

L

2Dn

Hn = 2Dn

0Dn, 1Dn, 3Dn connected to VBIAS

L

L

H

H

3Dn

Hn = 3Dn

0Dn, 1Dn, 2Dn connected to VBIAS

L

H

L

L

0Dn

H0−H9 = 0D0−0D9

1D0−1D9, 2D0−2D9, 3D0−3D9 connected to VBIAS

H10 = 0D10

1D10, 2D10, 3D10 connected to VBIAS_DQS†

L

H

L

H

1Dn

H0−H9 = 1D0−1D9

0D0−0D9, 2D0−2D9, 3D0−3D9 connected to VBIAS

H10 = 1D10

0D10, 2D10, 3D10 connected to VBIAS_DQS†

L

H

H

L

2Dn

H0−H9 = 2D0−2D9

0D0−0D9, 1D0−1D9, 3D0−3D9 connected to VBIAS

H10 = 2D10

0D10, 1D10, 3D10 connected to VBIAS_DQS†

L

H

H

H

3Dn

H0−H9 = 3D0−3D9

0D0−0D9, 1D0−1D9, 2D0−2D9 connected to VBIAS

H10 = 3D10

0D10, 1D10, 2D10 connected to VBIAS_DQS†

H

L

X

X

Z

0Dn, 1Dn, 2Dn, 3Dn connected to VBIAS

H

H

X

X

Z

0D0−0D9, 1D0−1D9, 2D0−2D9, 3D0−3D9 connected to VBIAS

0D10, 1D10, 2D10, 3D10 connected to VDD

† VBIAS_DQS is an internal voltage condition.

INPUTS

FUNCTION

EN

TC

FUNCTION

L

L

Termination resistors disconnected from S inputs

L

H

Termination resistors connected with S inputs

H

X

Pulldown termination resistor connected and pullup

termination resistor disconnected from the S inputs