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CBTW28DD14 Datasheet

14-bit Bus Switch/multiplexer

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CBTW28DD14
14-bit bus switch/multiplexer for DDR2/DDR3/DDR4
applications
Rev. 7.1 — 3 August 2015
Product data sheet
1. General description
This 14-bit bus switch/multiplexer (MUX) is designed for 1.5 V or 1.8 V supply voltage
operation, POD_12, SSTL_12, SSTL_135, SSTL_15 or SSTL_18 signaling and CMOS
select input levels. It is designed for operation in DDR2, DDR3 or DDR4 memory bus
systems.
The CBTW28DD14 has a 1 : 2 switch or 2 : 1 multiplex topology and offers a 14-bit wide
bus. Each 14-bit wide A-port can be switched to one of two ports B and C, for all bits
simultaneously. The selection of the port is by a simple CMOS input (SELect). Another
CMOS input (ENable) is available to allow all ports to be disconnected. Each port is
non-directional due to the use of FET switches, allowing a multitude of applications
requiring high-bandwidth switching or multiplexing.
The SEL and EN input signals are designed to operate transparently as CMOS input level
signals in both 1.5 V and 1.8 V supply voltage conditions.
CBTW28DD14 uses NXP proprietary high-speed switch architecture providing high
bandwidth, very little insertion loss at low frequency, and very low propagation delay,
allowing use in many applications requiring switching or multiplexing of high-speed
signals. It is available in a 4.5 mm 4.5 mm TFBGA48 package with 0.5 mm ball pitch, for
optimal size versus board layout density considerations. It is characterized for operation
from 10 C to +85 C.
2. Features and benefits
2.1 Topology
14-bit bus width
1 : 2 switch/MUX topology
Bidirectional operation
Simple CMOS select pin (SEL)
Simple CMOS enable pin (EN)
2.2 Performance
2.5 GHz bandwidth
Low ON insertion loss
Low crosstalk
High OFF isolation
POD_12, SSTL_12, SSTL_135, SSTL_15 or SSTL_18 signaling


NXP Semiconductors Electronic Components Datasheet

CBTW28DD14 Datasheet

14-bit Bus Switch/multiplexer

No Preview Available !

NXP Semiconductors
CBTW28DD14
14-bit bus switch/multiplexer for DDR2/DDR3/DDR4 applications
Low RON (10 typical)
2.3 General attributes
1.5 V or 1.8 V supply voltage operation
Very low supply current (300 A typical)
ESD robustness exceeds 3 kV HBM, 1 kV CDM
Available in TFBGA48 package, 4.5 mm 4.5 mm 0.8 mm size, 0.5 mm pitch,
Pb-free/Dark Green
3. Applications
DDR2/DDR3/DDR4 memory bus systems
Systems requiring high-speed multiplexing
4. Ordering information
Table 1. Ordering information
Type number
Topside
marking
Package
Name
CBTW28DD14ET W2814
TFBGA48
CBTW28DD14AET 2814A
TFBGA48
Description
plastic thin fine-pitch ball grid array package; 48 balls;
body 4.5 4.5 0.8 mm
plastic thin fine-pitch ball grid array package; 48 balls;
body 4.5 4.5 0.8 mm, Cu-OSP leadframe
Version
SOT1155-1
SOT1155-1
4.1 Ordering options
Table 2. Ordering options
Type number
Orderable
part number
Package
CBTW28DD14ET CBTW28DD14ET,118 TFBGA48
CBTW28DD14AET CBTW28DD14AETJ TFBGA48
Packing method
Reel 13” Q1/T1
*Standard mark SMD
Reel 13” Q1/T1
*Standard mark SMD
Minimum
order
quantity
4000
4000
Temperature
Tamb = 10 C to +85 C
Tamb = 10 C to +85 C
CBTW28DD14
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7.1 — 3 August 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
2 of 14


Part Number CBTW28DD14
Description 14-bit Bus Switch/multiplexer
Maker NXP
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