CBTU4411EE-T datasheet, PDF - EEWORLD Datasheet

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CBTU4411EE-T: DescriptionMultiplexer Switch ICs 10BIT DDR SDRAM MUX BUS SWITCH; Categorysemiconductor Other integrated circuit (IC); File Size128KB，21 Pages; ManufacturerNXP; Websitehttps://www.nxp.com; Environmental Compliance

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Multiplexer Switch ICs 10BIT DDR SDRAM MUX BUS SWITCH

CBTU4411EE-T Parametric

Parameter Name	Attribute value
Product Attribute	Attribute Value
Manufacturer	NXP
Product Category	Multiplexer Switch ICs
RoHS	Details
Product	Multiplexers/Demultiplexers
Number of Channels	11 Channel
Configuration	11 x 1:4
Mounting Style	SMD/SMT
Package / Case	SOT-856
Packaging	Cut Tape
Packaging	Reel
Factory Pack Quantity	2000

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CBTU4411

11-bit DDR2 SDRAM MUX/bus switch with 12

ON resistance

Rev. 4 — 18 June 2012

Product data sheet

1. General description

This 11-bit bus switch is designed for 1.7 V to 1.9 V V

operation and SSTL_18 select

input levels.

Each Host port pin (HPn) is multiplexed to one of four DIMM port pins (xDPn). The

selection of the DIMM port to be connected to the Host port is controlled by a decoder

driven by three hardware select pins S0, S1 and EN. Driving pin EN HIGH disconnects all

DIMM ports from their respective host ports. When EN is driven LOW, pins S0 and S1

select one of four DIMM ports to be connected to their respective host port. When

disconnected, any DIMM port is terminated to the externally supplied voltage V

bias

means of an on-chip pull-down resistor of typically 400

Ω.

The ON-state connects the

Host port to the DIMM port through a 12

nominal series resistance. The design is

intended to have only one DIMM port active at any time.

The CBTU4411 can also be configured to support a differential strobe signal on

channel 10 (TRUE) and channel 9 (complementary Strobe). When its LVCMOS

configuration input strobe enable (STREN) is HIGH, channel 10 is pulled up to

⁄

of V

internally by a resistive divider when the DIMM port is idle. When the CBTU4411 is

disabled (EN = HIGH in Strobe mode), the pull-down on channel 10 is disabled for current

savings, pulling channel 10 to V

. When strobe enable (STREN) is LOW, channel 10

behaves the same as all other channels.

The select inputs (S0, S1) are pseudo-differential type SSTL_18. A reference voltage

should be provided to input pin VREF at nominally 0.5V

. This topology provides

accurate control of switching times by reducing dependency on select signal slew rates.

S0 and S1 are provided with selectable input termination to 0.5V

(active when LVCMOS

input TERM is HIGH). When the CBTU4411 is disabled (EN = HIGH), both S0 and S1

inputs are pulled LOW.

The part incorporates a very low crosstalk design. It has a very low skew between outputs

(< 30 ps) and low skew (< 30 ps) for rising and falling edges. The part has optimal

performance in DDR2 data bus applications.

Each switch has been optimized for connection to 1- or 2-rank DIMMs.

The low internal RC time constant of the switch allows data transfer to be made with

minimal propagation delay.

The CBTU4411 is characterized for operation from 0

°C

to +85

°C.

CBTU4411EE-T Related Products

	CBTU4411EE-T	CBTU4411EE-S	CBTU4411EE
Description	Multiplexer Switch ICs 10BIT DDR SDRAM MUX BUS SWITCH	Multiplexer Switch ICs 10BIT DDR SDRAM MUX BUS SWITCH	Multiplexer Switch ICs 10BIT DDR SDRAM MUX BUS SWITCH
Packaging	Reel	Tray	-
Product Attribute	Attribute Value	Attribute Value	-
Manufacturer	NXP	NXP	-
Product Category	Multiplexer Switch ICs	Multiplexer Switch ICs	-
RoHS	Details	Details	-
Product	Multiplexers/Demultiplexers	Multiplexers/Demultiplexers	-
Number of Channels	11 Channel	11 Channel	-
Configuration	11 x 1:4	11 x 1:4	-
Mounting Style	SMD/SMT	SMD/SMT	-
Package / Case	SOT-856	SOT-856	-
Factory Pack Quantity	2000	416	-

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