首页>ADM485ARMZ1>规格书详情
ADM485ARMZ1中文资料PDF规格书
ADM485ARMZ1规格书详情
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)
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
ADI(亚德诺) |
23+ |
MSOP8 |
7350 |
原装进口,原厂直销!当天可交货,支持原型号开票! |
询价 | ||
ADVANED |
2016+ |
SSOP |
1900 |
只做原装,假一罚十,公司可开17%增值税发票! |
询价 | ||
ADI |
2020+ |
MSOP8 |
80000 |
只做自己库存,全新原装进口正品假一赔百,可开13%增 |
询价 | ||
ADI(亚德诺)/LINEAR(凌特) |
23+ |
MSOP8 |
6000 |
诚信服务,绝对原装原盘 |
询价 | ||
ADI(亚德诺)/LINEAR |
2021+ |
MSOP-8 |
499 |
询价 | |||
ADI |
24+ |
8-Lead MSOP |
3660 |
十年信誉,只做全新原装正品现货,以优势说话 !! |
询价 | ||
ADI/亚德诺 |
22+ |
66900 |
原封装 |
询价 | |||
AD |
22+ |
MSOP8 |
20000 |
主打产品,长备大量现货 |
询价 | ||
ADI |
23+ |
MSOP8 |
12300 |
全新原装真实库存含13点增值税票! |
询价 | ||
AD |
23+ |
8-MSOP |
73390 |
专业分销产品!原装正品!价格优势! |
询价 |