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參數(shù)資料
| 型號(hào)： | DS2480B+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 3/32頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC LINE DRVR W/SENSOR 1-W 8-SOIC |
| 產(chǎn)品培訓(xùn)模塊： | 1-Wire Communications Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 100 |
| 類型： | 線路驅(qū)動(dòng)器，發(fā)射器 |
| 驅(qū)動(dòng)器/接收器數(shù)： | 1/0 |
| 規(guī)程： | RS232 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOIC |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 1429 (CN2011-ZH PDF) |
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DS2480B
Maxim Integrated........................................................................................................................................................................................... 11
Search Accelerator Usage Example
Action Sequence
Host TX
Host RX
Generate Reset Pulse
C1
CD or ED
Set Data Mode
E1
(nothing)
Search ROM command
F0
(as sent)
Set Command Mode
E3
(nothing)
Search Accelerator On
B1
(nothing)
Set Data Mode
E1
(nothing)
Send 16 bytes
data
(response)
Set Command Mode
E3
(nothing)
Search Accelerator Off
A1
(nothing)
Set Data Mode
E1
(nothing)
Do Memory Function
Set Command Mode
E3
(nothing)
Generate Reset Pulse
C1
CD or ED
CONFIGURATION COMMANDS
The DS2480B is designed to be configurable for the varying requirements of its application. When the
device powers up and/or performs a master reset cycle, the hard-wired default configuration settings take
effect. These settings will work on a short 1-Wire bus and assume standard 1-Wire communication speed.
To change these default settings and to verify the current settings, the logic of the DS2480B supports
configuration commands. A summary of the available configuration parameters, their default settings at
standard and Overdrive speed and their applicability is shown in Table 3.
Parameters not related to the communication speed on the 1-Wire bus specify the duration of the 12V
programming pulse, the duration of the strong pullup to 5V, and the baud rate on the interface that
connects the DS2480B to the host. The remaining three parameters are used to modify the 1-Wire
communication waveforms if one selects “Flexible Speed” (see Communication Commands for speed
selection).
Flexible speed is implemented to improve the performance of large 1-Wire Networks. This is
accomplished by:
limiting the slew rate on falling edges (e. g., at the beginning of time slots, to reduce ringing),
extending the Write-1 low time (allows the current flow through the network to end slowly, to prevent
voltage spikes from inductive kickback),
delaying the time point when reading a bit from the 1-Wire bus (gives the network more time to
stabilize, to get a higher voltage margin) and
adding extra recovery time between Write-0 time slots (allows more energy transfer through the
network, to replenish the parasite power supply of the devices on the bus).
The latter two functions are controlled by a single parameter. Taking advantage of flexible speed requires
changing one or more of these parameters from their default values. Otherwise the waveforms will be
identical to those at standard speed.
Each configuration parameter is identified by its 3-bit parameter code and can be programmed for one of
a maximum eight different values using a 3-bit value code. A matrix of parameter codes and value codes
with the associated physical values in shown in Table 4.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2480B | 制造商:Maxim Integrated Products 功能描述:IC SERIAL LINE DRIVER 2480 SOIC8 |
| DS2480B/T&R | 功能描述:緩沖器和線路驅(qū)動(dòng)器 RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| DS2480B+ | 功能描述:緩沖器和線路驅(qū)動(dòng)器 Serial - 1-Wire Line Driver RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| DS2480B+R | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Serial to 1-Wire Line Driver |
| DS2480B+T | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Serial to 1-Wire Line Driver |
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