引脚定义与内部结构
| 引脚 | 符号 | 名称 |
|---|---|---|
| 7 | B B | |
| 5 | A A | |
| 1 | RO Receiver Output | |
| 4 | DI |
数据来源：原厂规格书引脚图
关键参数速览
- 电源电压 VCC
- 2)
- 工作温度 TA
- 2)
产品特点 Features
- and one receiver. These devices include fail-safe circuitry, guaranteeing a logic-high receiver output when receiver
- kΩ True Fail-Safe Receiver While Maintaining
- EIA/TIA-485 Compatibility that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free trans- mission up to 500kbps. The MAX13486E driver slew
- 16Mbps.
- kΩ Extended ESD Protection for RS-485/RS-422 I/O
- Pins ±15kV Using Human Body Model
- kΩ 1/4 Unit Load, Allowing Up to 128 Transceivers on the Bus
- kΩ Available in Space-Saving 8-Pin µDFN or Industry
- Standard 8-Pin SO Packages
- The MAX13485E/MAX13486E +5V, half-duplex, ±15kV
- MAX13485E/MAX13486E
- 16Mbps possible.
- (HOT SWAP)
- Fail-Safe
- The MAX13485E/MAX13486E guarantee a logic-high 100µA
- 500µA receiver output when the receiver inputs are shorted or
绝对最大额定值 Absolute Maximum Ratings（TA = 25°C）
超过下表数值可能造成器件永久损坏，设计时请留余量。
| absolute | maximum | 额定值 | 条件 | for | extended | periods | may | affect | 器件 | reliability. |
|---|---|---|---|---|---|---|---|---|---|---|
| Short-Circuit | Duration | (RO, A, | B) to | GND | ..................Continuous | |||||
| Continuous | Power | Dissipation | (TA = | +70°C) | ||||||
| 8-Pin | SO (derate | 5.9mW/°C | above | +70°C)..................471mW | ||||||
| 8-Pin | µDFN | (derate | 4.8mW/°C | above | +70°C) | ..........380.6mW |
数据来源：原厂规格书
安全与绝缘额定值（DIN EN/IEC 60747−5−5）
| DIM | 最小 | 最大 | 最小2 | 最大2 |
|---|---|---|---|---|
| Half-Duplex RS-485/RS-422 | Transceivers | in µDFN | ||
| Package | Information | |||
| MAX13485E/MAX13486E | ||||
| INCHES | MILLIMETERS | NCIOS | ||
| A | 0.053 | 0.069 | 1.35 | 1.75 |
| N A1 | 0.004 | 0.010 | 0.10 | 0.25 |
| B | 0.014 | 0.019 | 0.35 | 0.49 |
| C | 0.007 | 0.010 | 0.19 | 0.25 |
| e | 0.050 | BSC | 1.27 | BSC |
| E | 0.150 | 0.157 | 3.80 | 4.00 |
| E H H | 0.228 | 0.244 | 5.80 | 6.20 |
| L | 0.016 | 0.050 | 0.40 | 1.27 |
| D | 0.189 | 0.197 | 4.80 | 5.00 8 AA |
| D | 0.337 | 0.344 | 8.55 | 8.75 14 AB |
| D | 0.386 | 0.394 | 9.80 | 10.00 16 AC |
电气特性 Electrical Characteristics（TA = 25°C）
| 参数 | 符号 | 条件 | 最小 | 典型 | 最大 | 单位 |
|---|---|---|---|---|---|---|
| RDIFF = | 100Ω, Figure 1 | 2.0 | VCC | |||
| Differential Driver Output | VOD RDIFF = | 54Ω, Figure 1 | 1.5 | V | ||
| ∆VOD RDIFF = | 100Ω or 54Ω, Figure 1 (Note | 3) | 0.2 | V | ||
| Voltage | VOC RDIFF = | 100Ω or 54Ω, Figure 1 | / 2 | 3 | V | |
| ∆VOC RDIFF = | 100Ω or 54Ω, Figure 1 (Note | 3) | 0.2 | V | ||
| Input-High Voltage | VIH DI, DE, | RE | 2.0 | V | ||
| Input-Low Voltage | VIL DI, DE, | RE | 0.8 | V | ||
| Input Current | IIN DI, DE, | RE | ±1 | µA | ||
| Driver Short-Circuit Output | 0V < | VOUT < +12V | +50 | +250 | ||
| Current (Note 4) | -7V < | VOUT < 0V | -250 | -50 | ||
| Driver Short-Circuit Foldback | (VCC - | 1V) < VOUT < +12V | 20 | |||
| Output Current Note 3) | -7V < | VOUT < 0V | -20 | |||
| DE = | GND, VCC = GND VIN = +12V | 250 | ||||
| or +5V | VIN = -7V | -200 | ||||
| VTH -7V < | VCM < +12V | -200 | -50 | mV | ||
| Receiver Input Hysteresis | ∆VTH VA + VB | = 0V | 25 | mV | ||
| Output-High Voltage | VOH IO = | -1.6mA, VA - VB > VTH | V | |||
| Half-Duplex | RS-485/RS-422 | Transceivers | in | µDFN | ||
| MAX13485E/MAX13486E | ||||||
| Output-Low Voltage | VOL IO = | 1mA, VA - VB < -VTH | 0.4 | V | ||
| IOZR 0V < VO | < VCC | ±1 | µA | |||
| Receiver Input Resistance | RIN -7V < | VCM < +12V | 48 | kΩ | ||
| IOSR 0V < | VRO < VCC | ±7 | ±95 | mA | ||
| Supply Voltage | VCC | 4.75 | 5.25 | V | ||
| Supply Current | ICC DE = 1, | RE = 0, no load | 4.5 | mA | ||
| Shutdown Supply Current | ISHDN DE = 0, | RE = 1 | 10 | µA | ||
| Half-Duplex | RS-485/RS-422 | Transceivers | in | µDFN | ||
| Half-Duplex | RS-485/RS-422 | Transceivers | in | µDFN |
应用领域 Applications
产品应用与封装尺寸
图纸取自该型号原厂规格书的应用电路与封装尺寸章节，点击图片可放大查看原始尺寸标注。