- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385526 > MAX3483 (Maxim Integrated Products, Inc.) 3.3V-Powered, 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers(0.25Mbps,半雙工，RS-485/RS-422收發(fā)器) PDF資料下載
參數(shù)資料
| 型號： | MAX3483 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 3.3V-Powered, 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers(0.25Mbps,半雙工，RS-485/RS-422收發(fā)器) |
| 中文描述： | 3.3V供電、10Mbps、限擺率、真RS-485/RS-422收發(fā)器 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大?。?/td> | 251K |
| 代理商： | MAX3483 |
____________________Func tion Tables
Devic es with Rec eiver/Driver Enable
(MAX 3483/MAX 3485/MAX 3486/MAX 3491)
Table 1. Transmitting
INPUTS
RE
DE
X
1
X
1
0
0
1
0
*B and A outputs are Z and Y, respectively, for full-duplex part
(MAX3491).
X = Don’t care; High-Z = High impedance
Table 2. Receiving
INPUTS
RE
DE
0
0*
0
0*
0
0*
1
0
*DE is a “don’t care” (x) for the full-duplex part (MAX3491).
X = Don’t care; High-Z = High impedance
Devic es without Rec eiver/Driver Enable
(MAX 3488/MAX 3490)
Table 3. Transmitting
INPUT
DI
1
0
Table 4. Receiving
INPUTS
A, B
≥
+0.2V
≤
-0.2V
Inputs Open
__________Applic ations Information
The MAX3483/MAX3485/MAX3486/MAX3488/MAX3490/
MAX3491 are low-power transceivers for RS-485 and
RS-422 communications. The MAX3483 and MAX3488
can transmit and receive at data rates up to 250kbps,
the MAX3486 at up to 2.5Mbps, and the MAX3485/
MAX3490/MAX3491 at up to 10Mbps. The MAX3488/
MAX3490/MAX3491 are full-duplex transceivers, while
the MAX3483/MAX3485/MAX3486 are half-duplex.
Driver Enable (DE) and Receiver Enable (RE) pins are
included on the MAX3483/MAX3485/MAX3486/
MAX3491. When disabled, the driver and receiver out-
puts are high impedance.
Reduc ed EMI and Reflec tions
(MAX 3483/MAX 3486/MAX 3488)
The MAX3483/MAX3488 are slew-rate limited, minimiz-
ing EMI and reducing reflections caused by improperly
terminated cables. Figure 13 shows both the driver
output waveform of a MAX3485/MAX3490/MAX3491
transmitting a 125kHz signal and the Fourier analysis of
that waveform. High-frequency harmonics with large
amplitudes are evident. Figure 14 shows the same infor-
mation, but for the slew-rate-limited MAX3483/MAX3488
transmitting the same signal. The high-frequency har-
monics have much lower amplitudes, and the potential for
EMI is significantly reduced.
Low-Power S hutdown Mode
(MAX 3483/MAX 3485/MAX 3486/MAX 3491)
A low-power shutdown mode is initiated by bringing both
RE high and DE low. The devices will not shut down
unless both the driver and receiver are disabled (high
impedance). In shutdown, the devices typically draw
only 2nA of supply current.
For these devices, the t
PSH
and t
PSL
enable times
assume the part was in the low-power shutdown mode;
the t
PZH
and t
PZL
enable times assume the receiver or
driver was disabled, but the part was not shut down.
M
3.3V-Powered, 10Mbps and S lew-Rate-Limited
True RS -485/RS -422 Transc eivers
______________________________________________________________________________________
11
OUTPUTS
B*
0
1
High-Z
High-Z
DI
1
0
X
X
A*
1
0
MODE
Normal
Normal
Normal
Shutdown
High-Z
High-Z
A, B
≥
+0.2V
≤
-0.2V
Inputs Open
X
RO
1
0
1
MODE
Normal
Normal
Normal
Shutdown
High-Z
OUTPUTS
OUTPUT
RO
1
0
1
OUTPUTS
Z
0
1
Y
1
0
5MHz
500kHz/div
0Hz
10dB/div
5MHz
500kHz/div
0Hz
10dB/div
Figure 13. Driver Output Waveform and FFT Plot of MAX3485/
MAX3490/MAX3491 Transmitting a 125kHz Signal
Figure 14. Driver Output Waveform and FFT Plot of MAX3483/
MAX3488 Transmitting a 125kHz Signal
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX3485 | 3.3V-Powered, 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers(10Mbps,半雙工，RS-485/RS-422收發(fā)器) |
| MAX3488 | 3.3V-Powered, 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers(0.25Mbps,全雙工，RS-485/RS-422收發(fā)器) |
| MAX3491 | 3.3V-Powered, 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers(10Mbps,具關(guān)閉方式,全雙工，RS-485/RS-422收發(fā)器) |
| MAX3490E | 3.3V Powered, ±15kV ESD-Protected, 12Mbps, Slew-Rate-Limited True RS-485/RS-422 Transceivers(3.3V ,±15kV ESD保護，12Mbps,轉(zhuǎn)換速率限制的RS-485/RS-422收發(fā)器（全雙工）) |
| MAX349 | Serially Controlled, Low-Voltage, 8-Channel Multiplexers(接通電阻100Ω,漏電流0.1nA,導通速率0.275μs,串行控制多路轉(zhuǎn)換器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3483C/D | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)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 |
| MAX3483C/D DIE | 制造商:Maxim Integrated Products 功能描述: |
| MAX3483CPA | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)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 |
| MAX3483CPA+ | 功能描述:RS-422/RS-485 接口 IC 3.3V 10Mbps Transceiver RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)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 |
| MAX3483CSA | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。