CBTU4411_09 datasheet(9/20 Pages) NXP

9 / 20 page

CBTU4411_3

Product data sheet

Rev. 03 — 12 October 2009

9 of 20

NXP Semiconductors

CBTU4411

11-bit DDR2 SDRAM MUX/bus switch with 12

Ω ON resistance

Static characteristics

[1]

All typical values are at VDD = 1.8 V, Tamb =25 °C.

[2]

Measured by the current between the host and the DIMM terminals at the indicated voltages on each side of the switch.

Table 8.

Static characteristics

Tamb =0 °C to +85 °C

Symbol

Parameter

Conditions

Min

Typ[1]

Max

Unit

VIK

input clamping voltage

VDD = 1.7 V; II = −18 mA

−1.2

termination voltage

on S0, S1 inputs when

Sn = open circuit and

TERM = HIGH

0.5VDD − 0.04 0.5VDD

0.5VDD + 0.04

Vpu

pull-up voltage

channel 10 DIMM port;

EN = LOW; Vbias = 0.54 V;

VDD = 1.8 V; STREN = HIGH;

unselected DIMM port

0.5VDD + 0.25 0.75VDD

0.75VDD + 0.25 V

ILI

input leakage current

VDD = 1.8 V; VI =VDD or GND;

Sn = VDD; Vbias =VDD;

TERM = LOW

S0, S1

±100

µA

host port

±100

µA

DIMM port

±100

µA

IDD

supply current

VDD = 1.8 V; IO =0A;

VI =VDD or GND

EN=LOW

EN = HIGH

100

µA

Cin

input capacitance

S0, S1 pins; VI = 1.8 V or 0 V

Con

switch on capacitance

VI = 0.9 V

RON

ON resistance

VDD = 1.8 V; VHPn =Vref;

VxDPn =Vref ± 250 mV

[2] 712

Ω

VDD = 1.8 V; VHPn =Vref;

VxDPn =Vref ± 500 mV

[2] 712

Ω

∆RON

ON resistance

mismatch between

channels

variation over channel voltage;

EN = LOW; Vbias = 0.54 V;

VDD = 1.8 V; STREN = LOW;

selected DIMM port

VHPn = 0.5VDD + 250 mV and

VxDPn = 0.5VDD − 250 mV

1.8

2.5

Ω

Rpd

pull-down resistance

EN = HIGH; Vbias = 0.54 V;

VDD = 1.8 V

280

400

520

Ω

channel 10; STREN = LOW

280

400

520

Ω

channel 10; STREN = HIGH

780

1120

1460

Ω

RPU

pull-up resistance

EN = HIGH; Vbias = 0.54 V;

VDD = 1.8 V;

channel 10; STREN = HIGH

430

622

810

Ω

termination resistance

Sn input; Thevenin equivalent

(see Figure 1); input voltage

sweep 0 < VI (Sn) < VDD;

TERM = HIGH

105

Ω

CBTU4411 Folha de dados(PDF) 9 Page - NXP Semiconductors

CBTU4411 Folha de dados(HTML) 9 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Folha de dados Download

Ligação URL