參數(shù)資料
型號(hào)： DS2490S
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： Bus Controller
英文描述： UNIVERSAL SERIAL BUS CONTROLLER, PDSO24
封裝： 0.300 INCH, SO-24
文件頁(yè)數(shù)： 27/51頁(yè)
文件大?。?/td> 444K
代理商： DS2490S
DS2490
33 of 50
Data Value Description
Data
VPP A value of 1 indicates that during a PULSE with TYPE =
1 or WRITE EPROM command the 12V programming
pulse was not seen on the 1-Wire bus; this could indicate
that there were other devices on the bus that clamped the
voltage to a value lower than VPP or that the
programming pulse was disabled with a mode command.
APP A value of 1 indicates that a 1-WIRE RESET revealed an
Alarming Presence Pulse.
SH A value of 1 indicates that a 1-WIRE RESET revealed a
short to the 1-Wire bus or the SET PATH command
could not successfully connect a branch due to a short.
NRS A value of 1 indicates an error with one of the following:
1-WIRE RESET did not reveal a Presence Pulse. SET
PATH command did not get a Presence Pulse from the
branch that was to be connected. No response from one
or more ROM ID bits during a SEARCH ACCESS
command.
A value of 0 in any of these fields indicates that the error
condition was not detected.
USB TRANSCEIVER
Integrated within the DS2490 is a USB-compliant bus transceiver. To comply with USB cable
termination requirements, resistors external to the DS2490 must be installed as shown in Figure 11. The
24
Ω, 1% tolerance resistors are necessary to bring the total steady state resistance of each driver to the
28
Ω to 43Ω range required by the USB core specification. The 1.5kΩ pullup resistor is required to
identify the DS2490 as a high speed USB device to the up-stream HUB. The 33pF capacitors are optional
but are useful for edge rate control and for bypassing high frequency energy to ground for EMI reduction
purposes.
USB Transceiver Termination Figure 11
USB
TRANSCEIVER
24
Ω, 1%
24
Ω, 1%
DS2490
D+
D-
1.5k
Ω
5%
VB
(VB = 3.3V + 10%)
TO/FROM
HIGH SPEED
USB CABLE
33pF
相關(guān)PDF資料
PDF描述
DS2502P 128 X 8 OTPROM, PDSO6
DS2502S 128 X 8 OTPROM, PDSO8
DS2502 128 X 8 OTPROM, PBCY3
DS2505/T&R 16K X 1 OTPROM, PBCY3
DS2505P 16K X 1 OTPROM, PDSO6
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS2490S+ 制造商:Maxim Integrated Products 功能描述:USB TO 1-WIRE BRIDGE 24SOIC W - Rail/Tube 制造商:Maxim Integrated Products 功能描述:USB 1-W BRIDGE CHIP 24-SO LF 制造商:Maxim Integrated Products 功能描述:Bulk
DS2490S+T&R 制造商:Maxim Integrated Products 功能描述:USB TO 1-WIRE BRIDGE 24SOIC W - Tape and Reel
DS2490S+TR 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:USB to 1-Wire Bridge Chip
DS2490X 制造商:未知廠家 制造商全稱:未知廠家 功能描述:USB to 1-Wire Bridge Chip(468.41 k)
DS2490X/T&R 功能描述:接口 - 專用 RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59
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