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ADM485ARMZ-REEL1中文資料亞德諾數據手冊PDF規(guī)格書
ADM485ARMZ-REEL1規(guī)格書詳情
GENERAL DESCRIPTION
The ADM485 is a differential line transceiver suitable for high speed bidirectional data communication on multipoint bus transmission lines. It is designed for balanced data transmission and complies with EIA standards RS-485 and RS-422. The part contains a differential line driver and a differential line receiver. Both the driver and the receiver can be enabled independently. When disabled, the outputs are three-stated.
The ADM485 operates from a single 5 V power supply. Excessive power dissipation caused by bus contention or by output shorting is prevented by a thermal shutdown circuit. If during fault conditions, a significant temperature increase is detected in the internal driver circuitry, this feature forces the driver output into a high impedance state.
Up to 32 transceivers can be connected simultaneously on a bus, but only one driver should be enabled at any time. It is important, therefore, that the remaining disabled drivers do not load the bus. To ensure this, the ADM485 driver features high output impedance when disabled and when powered down, which minimizes the loading effect when the transceiver is not being used. The high impedance driver output is maintained over the common-mode voltage range of ?7 V to +12 V.
The receiver contains a fail-safe feature that results in a logic high output state if the inputs are unconnected (floating). The ADM485 is fabricated on BiCMOS, an advanced mixed technology process combining low power CMOS with fast switching bipolar technology. All inputs and outputs contain protection against ESD; all driver outputs feature high source and sink current capability. An epitaxial layer is used to guard against latch-up.
The ADM485 features extremely fast switching speeds. Minimal driver propagation delays permit transmission at data rates up to 5 Mbps while low skew minimizes EMI interference. The part is fully specified over the commercial and industrial temperature range and is available in 8-lead PDIP, 8-lead SOIC, and small footprint, 8-lead MSOP packages.
FEATURES
Meets EIA RS-485 standard
5 Mbps data rate
Single 5 V supply
–7 V to +12 V bus common-mode range
High speed, low power BiCMOS
Thermal shutdown protection
Short-circuit protection
Driver propagation delay: 10 ns typical
Receiver propagation delay: 15 ns typical
High-Z outputs with power off
Superior upgrade for LTC485
APPLICATIONS
Low power RS-485 systems
DTE/DCE interface
Packet switching
Local area networks (LNAs)
Data concentration
Data multiplexers
Integrated services digital network (ISDN)
供應商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價格 |
---|---|---|---|---|---|---|---|
ADI/亞德諾 |
22+ |
MSOP-8 |
9600 |
原裝現貨,優(yōu)勢供應,支持實單! |
詢價 | ||
ADI/亞德諾 |
22+ |
BGA |
30000 |
十七年VIP會員,誠信經營,一手貨源,原裝正品可零售! |
詢價 | ||
ADI/亞德諾 |
24+ |
NA |
1000 |
原裝現貨 |
詢價 | ||
AD |
23+ |
8-MSOP |
24840 |
專業(yè)分銷產品!原裝正品!價格優(yōu)勢! |
詢價 | ||
ADI(亞德諾) |
23+ |
N/A |
10000 |
正規(guī)渠道,只有原裝! |
詢價 | ||
ADI/亞德諾 |
22+ |
N/A |
12245 |
現貨,原廠原裝假一罰十! |
詢價 | ||
ADI/亞德諾 |
2021+ |
MSOP8 |
5000 |
十年專營原裝現貨,假一賠十 |
詢價 | ||
ADI/亞德諾 |
22+ |
BGA |
28000 |
原裝現貨只有原裝.假一罰十 |
詢價 | ||
ADI/亞德諾 |
22+ |
MSOP-8 |
4678 |
進口原裝公司現貨! |
詢價 | ||
AD |
22+ |
MSOP8 |
20000 |
主打產品,長備大量現貨 |
詢價 |