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MAX485 Datasheet(PDF) 4 Page - Shenzhen Huazhimei Semiconductor Co., Ltd |
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MAX485 Datasheet(HTML) 4 Page - Shenzhen Huazhimei Semiconductor Co., Ltd |
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4 / 10 page ![]() 5 / 11 DI 1.2 输入电流 IIN1 DE ,RE, DI ±2 uA 输入电流(A, B) IIN2 DE = 0V; VCC = 3.3V VIN= 3.3 V 40 100 uA VIN= 0V 120 300 接收差分阈值电压 VTH ‐0.2 ‐0.05 V 接收输入滞后 ∆VTH 70 mV 接收输出高电压 VOH IO = ‐3mA, VID = 200mV 2.5 2.9 V 接收输出低电压 VOL IO = 3mA, VID = ‐200mV 0.2 0.4 V 接收三态(高阻)输出电流 IOZR 0.4V ≤ VO ≤ 2.4V ±1 uA 接收输入阻抗 RIN 48 KΩ 无负载供电电流 ICC RE、 DI=0 or VCC DE=VCC 0.8 1.2 mA DE=0 0.7 1.2 驱动短路电流 (VO = High) IOSD1 DE=RE=3.3V DI=0 VA=3.3V 60 100 mA 驱动短路电流 (VO = Low) IOSD2 DE=RE=3.3V DI=0 VB=0 60 100 mA 接收短路电流 IOSR 0V ≤ VO ≤ VCC 20 60 mA ESD 保护 A, B, Y and Z pins, tested using Human Body Model ±15 kV (Vdd=5V±5%,Ta= TMIN to TMAX)(注 3,4) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 驱动差分输出(无负载) VOD1 2.7 5 5.5 V 驱动差分输出(带负载) VOD2 R=50Ω,图 3 2 3.6 V 互补输出状态驱动差分输出电压的 变化幅度 ∆VOD 0.2 V 驱动共模输出电压 VOC 3 V 互补输出状态驱动共模输 出电压的变化幅度 ∆VOC 0.2 V 输入高电压 VIH DE ,RE 2 V DI 2.8 V 输入低电压 VIL DE ,RE 0.8 V DI 1.6 RS-485/RS-422 Transceivers |
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