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參數資料
| 型號： | MAX3085 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | CLAMPS |
| 中文描述： | 失效保護、高速(10Mbps)、限擺率、RS-485/RS-422收發(fā)器 |
| 文件頁數： | 14/20頁 |
| 文件大小： | 275K |
| 代理商： | MAX3085 |
M
Detailed Desc ription
The MAX3080–MAX3089 high-speed transceivers for
RS-485/RS-422 communication contain one driver and
one receiver. These devices feature fail-safe circuitry,
which guarantees a logic-high receiver output when the
receiver inputs are open or shorted, or when they are
connected to a terminated transmission line with all
drivers disabled (see Fail-Safe section). The MAX3080/
MAX3081/MAX3082 feature reduced slew-rate drivers
that minimize EMI and reduce reflections caused by
improperly terminated cables, allowing error-free data
transmission up to 115kbps (see Reduced EMI and
Reflections section). The MAX3083/MAX3084/MAX3085
offer higher driver output slew-rate limits, allowing
transmit speeds up to 500kbps. The MAX3086/
MAX3087/MAX3088’s driver slew rates are not limited,
making transmit speeds up to 10Mbps possible. The
MAX3089’s slew rate is selectable between 115kbps,
500kbps, and 10Mbps by driving a selector pin with a
three-state driver.
The MAX3082/MAX3085/MAX3088 are half-duplex
transceivers, while the MAX3080/MAX3081/MAX3083/
MAX3084/MAX3086/MAX3087 are full-duplex trans-
ceivers. The MAX3089 is selectable between half- and
full-duplex communication by driving a selector pin
high or low, respectively.
All of these parts operate from a single +5V supply.
Drivers are output short-circuit current limited. Thermal
shutdown circuitry protects drivers against excessive
power dissipation. When activated, the thermal shut-
down circuitry places the driver outputs into a high-
impedance state.
Rec eiver Input Filtering
The receivers of the MAX3080–MAX3085, and the
MAX3089 when operating in 115kbps or 500kbps
mode, incorporate input filtering in addition to input
hysteresis. This filtering enhances noise immunity with
differential signals that have very slow rise and fall
times. Receiver propagation delay increases by 20%
due to this filtering.
Fail-S afe, High-S peed (10Mbps),
S lew-Rate-Limited RS -485/RS -422 Transc eivers
14
______________________________________________________________________________________
DIP/SO
TOP VIEW
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
CC
RXP
TXP
A
B
Z
Y
RO
RE
DE
DI
SRL
GND
H/F
MAX3089
RD
V
CC
TXP
A
B
Z
Y
GND
DE
SRL
DI
MAX3089
H/F
RE
NOTE: SWITCH POSITIONS
INDICATED FOR H/F = GND
Figure 4. MAX3089 Pin Configuration and Functional Diagram
相關PDF資料 |
PDF描述 |
|---|---|
| MAX3087 | CLAMP |
| MAX3087ESA | Fail-Safe, High-Speed 10Mbps, Slew-Rate-Limited RS-485/RS-422 Transceivers |
| MAX3088ESA | Fail-Safe, High-Speed 10Mbps, Slew-Rate-Limited RS-485/RS-422 Transceivers |
| MAX3080CSD | Fail-Safe, High-Speed 10Mbps, Slew-Rate-Limited RS-485/RS-422 Transceivers |
| MAX3083CPD | Fail-Safe, High-Speed 10Mbps, Slew-Rate-Limited RS-485/RS-422 Transceivers |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX3085CPA | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 數據速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
| MAX3085CPA+ | 功能描述:RS-422/RS-485 接口 IC Fail-Safe 10Mbps RS-485/RS-422 Tcvr RoHS:否 制造商:Maxim Integrated 數據速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
| MAX3085CSA | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 數據速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
| MAX3085CSA | 制造商:Maxim Integrated Products 功能描述:TRANCEIVER RS-485/RS-422 SMD 3085 |
| MAX3085CSA+ | 功能描述:RS-422/RS-485 接口 IC Fail-Safe 10Mbps RS-485/RS-422 Tcvr RoHS:否 制造商:Maxim Integrated 數據速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
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