Os motores de busca de Datasheet de Componentes eletrônicos
  Portuguese  ▼
ALLDATASHEETPT.COM

X  

ISL54402IRZ Folha de dados(PDF) 11 Page - Intersil Corporation

Nome de Peças ISL54402IRZ
Descrição Electrónicos  Low Voltage, Dual SPDT, USB/Audio Switches with Negative Signal Capability
Download  15 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrônico  INTERSIL [Intersil Corporation]
Página de início  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL54402IRZ Folha de dados(HTML) 11 Page - Intersil Corporation

Back Button ISL54402IRZ Datasheet HTML 7Page - Intersil Corporation ISL54402IRZ Datasheet HTML 8Page - Intersil Corporation ISL54402IRZ Datasheet HTML 9Page - Intersil Corporation ISL54402IRZ Datasheet HTML 10Page - Intersil Corporation ISL54402IRZ Datasheet HTML 11Page - Intersil Corporation ISL54402IRZ Datasheet HTML 12Page - Intersil Corporation ISL54402IRZ Datasheet HTML 13Page - Intersil Corporation ISL54402IRZ Datasheet HTML 14Page - Intersil Corporation ISL54402IRZ Datasheet HTML 15Page - Intersil Corporation  
Zoom Inzoom in Zoom Outzoom out
 11 / 15 page
background image
11
FN6240.3
July 12, 2006
where the two SPDT switches work in tandem, the ISL54402
gives you independent control over each SPDT switch.
USB Switches
The two NO (normally open) USB switches (D+, D-, NOx)
are 5
Ω bidirectional switches that are designed to pass low
speed and full-speed USB differential signals typically in the
range of 0V to 3.6V. The switches have low capacitance and
high bandwidth to pass USB full-speed signals (12Mbps)
with minimum edge and phase distortion to meet USB 2.0
signal quality specifications. See eye diagram Figure 11 on
page 13.
For the ISL54400 and ISL54401 parts, the maximum signal
range for the USB switches is from -1.5V to VBUS. The
signal voltage should not be allowed to exceed the VBUS
voltage rail or go below ground by more than -1.5V.
For the ISL54402 part, the maximum signal range is from
-1.5V to VDD. The signal voltage should not be allowed to
exceed the VDD voltage rail or go below ground by more
than -1.5V.
When using the ISL54400 and ISL54401 parts, the USB
switches are active (turned ON) whenever the VBUS voltage
is to VDD + 0.8V. VBUS is internally pulled low, so when
VBUS is floating the USB switches are OFF.
Note: Whenever the USB switches are ON the audio drivers
of the CODEC, connected at R and L (pins 6 and 7), need to
be at AC or DC ground or floating to keep from interfering
with the data transmission.
When using the ISL54402 part, the NO1 USB switch is
active (turned ON) whenever logic pin IN1 (pin 10) is HIGH.
The NO2 USB switch is active (turned ON) whenever the
logic pin IN2 (pin 2) is HIGH. Unlike the ISL54400 and
ISL54401 parts where the two SPDT switches work in
tandem, the ISL54402 gives you independent control over
each SPDT switch.
ISL54400 and ISL54401 Operation
The ISL54400 and ISL54401 function the same except the
ISL54401 does not have the VTERM feature. The discussion
that follows pertains to both devices and will discuss using the
parts in the typical application shown in the block diagram on
page 10.
LOGIC CONTROL
The state of the ISL54400 and ISL54401 devices are
determined by the voltage at the VBUS pin (pin 2). The VBUS
pin is internally pulled low and can be left floating.
If VBUS (pin 2) is floating or the VBUS voltage VDD + 0.2V
the part will be in the Audio mode. In Audio mode the L (left)
and R (right) 1
Ω audio switches are ON and the D- and D+
5
Ω switches are OFF (high impedance). In this state, power
to the part will be provided by the DC voltage connected at
the VDD pin (pin 1). In a typical application VDD will be in the
range of 2.5V to 3.6V and will be connected to the battery or
LDO of the MP3 player or cellphone. When a headphone is
plugged into the common connector, nothing gets connected
at the VBUS pin (it’s floating) and the ISL54400 and
ISL54401 parts remain in the audio mode and the MP3
player or cellphone audio drivers can drive the headphones
and play music.
If VBUS (pin 2) voltage is greater than VDD by 0.8V the part
will go into USB mode. In USB mode the D- and D+ 5
switches are ON and the L and R 1
Ω audio switches are
OFF (high impedance). In this state the part will be powered
by the voltage connected at the VBUS pin (pin 2). When a
USB cable from a computer or USB hub is connected at the
common connector the VBUS voltage is driven to between
4.4V and 5.25V. The ISL54400 and ISL54401 parts will go
into the USB mode. In USB mode the computer or USB hub
transceiver and the MP3 player or cellphone USB
transceiver are connected and digital data will be able to be
transmitted back and forth.
When the USB cable is disconnected the switch
automatically turns the D+ and D- switches OFF and turns
the L and R audio switches ON.
POWER
In audio mode the power supply connected at VDD (pin 1)
provides power to the ISL54400 and ISL54401 parts. Its
voltage should be kept in the range of 2.5V to 3.6V when
used in a USB/Audio application to ensure you get proper
switching when the VBUS voltage is at its lower limit of 4.4V.
In USB mode power for the ISL54400 and ISL54401 parts is
provided from the VBUS line from the host USB controller of
the computer or USB hub. Its voltage will be between 4.4V
and 5.25V.
VTERM OPERATION (ISL54400 ONLY)
When a USB cable from a computer is connected to a USB
device a VTERM voltage must be applied to a speed
indicating pull-up resistor to properly terminate the bus and
identify whether the USB device is a full-speed or low-speed
device to facilitate proper digital transmission. When the
cable is removed from the device this VTERM voltage must
be disconnected from the speed indicating pull-up resistor.
The ISL54400 device can perform this operation.
When VDD 2.5V and VBUS VDD + 0.8V, the VTERM pin
(pin 10) outputs an open circuit voltage equal to the voltage
at the VBUS pin. Otherwise the VTERM pin will be in a HI-Z
state.
The ISL54400 VTERM circuitry has an internal series resistor
approximately equal to 5.3k
Ω. For a full speed USB
application, it is recommended you use a 3k
Ω ±5% speed
indicating pull-up resistor. When the USB bus is in the idle
state, a 3k
Ω ±5% resistor will put the D+ line voltage in the
range of 2.7V to 3.6V as required by the USB specification.
For low-speed USB application, it is recommended you use
ISL54400, ISL54401, ISL54402


Nº de peça semelhante - ISL54402IRZ

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
Renesas Technology Corp
ISL54402IRZ RENESAS-ISL54402IRZ Datasheet
839Kb / 15P
   Low Voltage, Dual SPDT, USB/Audio Switches with Negative Signal Capability
ISL54402IRZ-T RENESAS-ISL54402IRZ-T Datasheet
839Kb / 15P
   Low Voltage, Dual SPDT, USB/Audio Switches with Negative Signal Capability
More results

Descrição semelhante - ISL54402IRZ

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
Renesas Technology Corp
ISL54400 RENESAS-ISL54400 Datasheet
839Kb / 15P
   Low Voltage, Dual SPDT, USB/Audio Switches with Negative Signal Capability
logo
Intersil Corporation
ISL54416 INTERSIL-ISL54416 Datasheet
490Kb / 14P
   Low Voltage, Dual SPDT, USB/CVBS/ Audio Switches with Negative Signal Capability
ISL54207 INTERSIL-ISL54207 Datasheet
468Kb / 14P
   Low Voltage, Dual SPDT, USB/CVBS/ Audio Switches, with Negative Signal Capability
logo
Renesas Technology Corp
ISL54207 RENESAS-ISL54207 Datasheet
833Kb / 14P
   Low Voltage, Dual SPDT, USB/CVBS/ Audio Switches, with Negative Signal Capability
logo
Intersil Corporation
ISL54208 INTERSIL-ISL54208 Datasheet
447Kb / 15P
   Low Voltage, Dual SPDT, USB/CVBS/ Audio Switches, with Negative Signal Capability
logo
Renesas Technology Corp
ISL54208 RENESAS-ISL54208 Datasheet
890Kb / 15P
   Low Voltage, Dual SPDT, USB/CVBS/ Audio Switches, with Negative Signal Capability
ISL54415 RENESAS-ISL54415 Datasheet
871Kb / 14P
   Low Voltage, Dual SPDT, USB/CVBS/Audio Switches with Negative Signal Capability
logo
Maxim Integrated Produc...
MAX4762 MAXIM-MAX4762_V01 Datasheet
481Kb / 15P
   Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability
2006
logo
ams AG
AS1747 AMSCO-AS1747_04 Datasheet
875Kb / 17P
   Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability
logo
Maxim Integrated Produc...
MAX4762 MAXIM-MAX4762 Datasheet
512Kb / 15P
   Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability
19-3152; Rev 0; 1/04
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15


Folha de dados Download

Go To PDF Page


Ligação URL




Privacy Policy
ALLDATASHEETPT.COM
ALLDATASHEET é útil para você?  [ DONATE ] 

Sobre Alldatasheet   |   Publicidade   |   Contato conosco   |   Privacy Policy   |   roca de Link   |   Lista de Fabricantes
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com