参数资料
型号: ISL54224IRTZ
厂商: Intersil
文件页数: 1/18页
文件大小: 0K
描述: IC MULTIPLEXER DUAL 2:1 10TDFN
标准包装: 100
功能: 多路复用器
电路: 2 x 2:1
导通状态电阻: 20 欧姆
电压电源: 单电源
电压 - 电源,单路/双路(±): 2.7 V ~ 5.25 V
电流 - 电源: 45µA
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 10-VFDFN 裸露焊盘
供应商设备封装: 10-TDFN-EP(3x3)
包装: 管件
1
High-Speed USB 2.0 (480Mbps) Multiplexer with
Overvoltage Protection (OVP) and Overvoltage
Indicator Output
ISL54224
The Intersil ISL54224 is a single supply dual 2:1 multiplexer that
can operate from a single 2.7V to 5.25V supply. It contains two
SPDT (Single Pole/Double Throw) switches configured as a
DPDT. The part was designed for switching of USB data signals
in portable battery powered products.
The 6.5 switches were specifically designed to pass USB high
speed/full speed data signals. They have high bandwidth and
low capacitance to pass USB high speed data signals with
minimal distortion.
The ISL54224 has OVP circuitry on the D-/D+ com pins that
opens the USB in-line switches when the voltage at these pins
exceeds 3.8V (typ) or goes negative by -0.5V (typ). It isolates
fault voltages up to +5.25V or down to -5V from getting passed
to the other-side of the switch, thereby protecting the USB
transceivers.
The digital logic inputs are 1.8V logic compatible when operated
with a 2.7V to 3.6V supply. The ISL54224 has an open drain
OE/ALM pin that can be driven Low to open all switches and
outputs a Low when the OVP circuitry is activated. It can be used
to facilitate proper bus disconnect and connection when
switching between the USB sources.
The ISL54224 is available in 10 Ld 1.8mmx1.4mm TQFN and
10 Ld TDFN packages. It operates over a temperature range of
-40°C to +85°C.
Related Literature
See AN1571 “ISL54224IRTZEVAL1Z Evaluation Board User's
Manual”
Features
High-speed (480Mbps) and full-speed (12Mbps) signaling
capability per USB 2.0
1.8V logic compatible (2.7V to +3.6V supply)
OE/ALM pin to open all switches and indicate overvoltage
fault condition
Power OFF protection
D-/D+ pins overvoltage protection for +5.25V and -5V fault
voltages
-3dB frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 780MHz
Low ON capacitance @ 240MHz. . . . . . . . . . . . . . . . . . . . 3.3pF
Low ON-resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6.5
Single supply operation (VDD). . . . . . . . . . . . . . . . 2.7V to 5.25V
Available in TQFN and TDFN packages
Pb-free (RoHS compliant)
Compliant with USB 2.0 short circuit and overvoltage
requirements without additional external components
Applications
MP3 and other personal media players
Cellular/mobile phones
PDA’s
Digital cameras and camcorders
USB switching
FIGURE 1. TYPICAL APPLICATION
FIGURE 2. USB 2.0 HS EYE PATTERN WITH SWITCHES IN THE
SIGNAL PATH
ISL54224
USB
TRANSCEIVER
USB
CONNECT
OR
D-
D+
GND
HSD1+
HSD1-
VDD
OE/ALM
P
VBUS
D-
D+
GND
OVP
500
SEL
LOGIC
CONTROL
3.3V
USB
TRANSCEIVER
100k
HSD2+
HSD2-
3.3V
TIME SCALE (0.2ns/DIV)
VO
LT
A
G
E
SC
A
L
E
(
0.
1
V/
D
IV
)
September 19, 2013
FN6969.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
| Copyright Intersil Americas LLC 2010, 2013. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
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