MAX1480A-MAX1490B 中文数据手册.pdf

所需积分/C币:33 2019-10-16 05:10:45 1016KB PDF
收藏 收藏
举报

MAX1480A-MAX1490B 中文数据手册pdf,MAX1480A-MAX1490B 中文数据手册
完备的隔离型、RS-485/RS-422 数据接口 ELECTRICAL CHARACTERISTICS (continued) (VcC = 5V+10%, VFS= Vcc, TA= TMIN to TMAX, unless otherwise noted. Typical values are at Vcc =5V and TA=+25C )(Notes 1, 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Differential Driver Output R=50(RS-422) With Load) ∨oD2 R=27Q2(RS-485), Figure 4 1.5 50 Change in Magnitude of R=27gcr509, Differential 03 Differential Output Voltage for OD Complementary Output States Figure 4 Common mode 03 Driver Common-Mode Outout Voc R=273 or 5032, Figure 4 Voltage MA×1480A/B/C DE′=0V,VN=12V MAX1490A/B 0.25 nput Currenit(A, B ISO lIN VO A 5.5V MA×1480A/B/C 08 VIN =-7V MAX1490A/B 02 MA×1480A/BC 48 Receiver Input Resistance RIN 7V≤VcM≤12 k92 MA×1490A/B 12 Receiver Differential Threshold VI TH 7V≤VcM≤12V 0.2 +0.2 Voltage Receiver Input Hysteresis △ VTH VCM=0V mv Receiver Outout/Receiver Output Using resistor values listed in LoW Voltag Tables 1 and 2 04 V Receiver Outout/Receiver Output CH High Current VOUT =5.5V 250 」A Driver Short-Circuit Current ISO lOsD-7Vs Vo s 12V(Note 4) 100 A SWITCHING CHARACTERISTICS-MAX1480A/MAX1490A (VCC= 5V+10%, FS= VcC, TA= TMIN to TMAX, unless otherwise noted. Typical values are at Vcc=5V and TA=+25'C. PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Driver Input to Output tPLH Figures 5 and 7, RDIFF=5492, CL1=CL2 1C0 275 Propagation Delay tpHL 100pF 100 275 Driver Output Skew skEW Figures 5 and 7, RDIFF= 54Q2, CL1= CL2 =100pF Driver rise or fall Time tR. tE Figures 5 and 7, RDIFF= 5422, CL1= CL2 ns 100pF Driver Enable to Output High (MA×1480AOny) Figures 6 and 8, CL= 100pF, S2 closed 0.2 Driver Enable to Output LOW (MA×1480AOny) Figures 6 and 8, CL= 100pF, S1 closed 0.2 15 us Driver Disable Time from Low 0.2 15 (MA×148 DA Only) tLz Figures 6 and 8, CL= 15pF, S1 closed Driver Disable Time from hich tHz Figures 6 and 8, CL =15pF, S2 closed 0.2 15 (MA×1480AOny) us Receiver Input to Output tPLH Figures 5 and 10, RDIFF=5492, CL1=CL2 100 225 ns Propagation Delay tpHL =100pF 1C0 225 X 完备的隔离型、RS-485/RS-422 数据接口 SWITCHING CHARACTERISTICS-MAX1480A/MAX1490A(continued) (Vcc =5V+10%, FS= Vcc, TA= TMIN to TMAX, unless otherwise noted. Typical values are at Vcc 5V and TA=+25'C) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ItPLH-tPHLI Differential Receiver Figures 5 and 10, RDIFF= 54Q2, CL1= CL2 Skew SKD 100pF Maximum data rate fMAx tPLH, tPHL 50% of data period 2.5 Mbps Time to shutdown tSHDN 1C0 Shutdown to Driver Output High tzH(SHDN) Figures 6 and 9, CL-100pF, S2 closed 3 10 s Shutdown to Driver Output LOw tZL(SHDN) Figures 6 and 9, CL= 100pF, S1 closed 10 S SWITCHING CHARACTERISTICS--MAX1480B/MAX1480C/MAX1490B O(VCC_=5V+10%, FS=VCC_,A=MIN to TMAX, unless otherwise noted. Typical values are at Vcc_=5V and TA=+25C) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Driver Input to Output tPLH Figures 5 and 7, RDIFF=5422 2 3.0 tPHL CL1=CL2=100pF us Propagation Delay 2 3.0 Driver Output Skew Figures 5 and 7, RDIFF= 54Q2 tSKEW CL1=CL2=100pF 9001600 ns Driver rise or fall time tR tE Figures 5 and 7, RDIFF 1.0 2.0 CL1=CL2= 100pF Driver Enable to Output High Figures 6 and 8, CL 100pF, S2 closed 1C0 (MA×1480BOny) Hs Driver Enable to Output LOw (MA×1480Bory) tz Figures 6 and 8, CL= 100pF, S1 closed 1C0 us Driver disable time from low 13 (MA×1480 B Only) Figures 6 and 8, CL= 15pF, S1 closed Hs Driver Disable Time from High (MA×1480 B Only) tHz Figures 6 and 8, CL=15pF, S2 closed 13 s Driver Enable to Output High (MA×1480cony tzH Figures 6 and 8, CL 100pF, S2 closed 0.5 4.5 Driver Enable to Output Low MA×1480cony) Figures 6 and 8, CL 100pF, S1 closed 0.5 4.5 Hs 完备的隔离型、RS-485/RS-422 数据接口 SWITCHING CHARACTERISTICS-MAX1480B/MAX1480C/MAX1490B(continued) (Vcc =5V+10%, FS= Vcc, TA= TMIN to TMAX, unless otherwise noted. Typical values are at Vcc 5V and TA=+25'C) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Driver disable time from low LLZ (MA×148Cony) igures 6 and 8, CL 15pF, S1 closed 2.0 4.5 Driver Disable Time from High tHz Figures 6 and 8, CL= 15pF, S2 closed 2.0 4.5 (MA×1480Cony) Receiver Input to Output tPLH Figures 5 and 10, RDIFF=5492 2 3.0 Propagation Delay tPHL CL1=CL2=100oF 3.0 ItpLH-tpHLI Differentia Receiver tsID Figures 5 and 10, RD FF= 54Q2 1200 ns Skew CL1=C_2=1000F Maximum Data Rate fMAX tPLH, tPHL< 50% of data period 0.25 Mbps Time to Shutdown tsHDN 100 s Shutdown to Driver Output High tzH(SHDN) Figures 6 and 9, CI= 100pF, S2 closed 1C0 uS Shutdown to Driver Output LOw tZL(SHDN) Figures 6 and 9, CL =100pF, S1 closed 35 1C0 Note 1: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to lagic side ground (GND_), unless otherwise specified Note 2: For DE and DI pin descriptions, see Detailed Block Diagram and Typical Application Circuit(Figure 1 for MAX1480A/ MA×1480B/MA×1480C, Figure2 for mAX1490AMA×149CB) Note 3: Shutdown supply current is the current at VcC1 and Vcc2 when shutdown is enabled Note 4: Applies to peak current(see Typical Operating Characteristics). Although the MAX 1480A/B/C and MAX1490A/B provide electrical isolation between logic ground and signal paths, they do not provide isolation between external shields and the signal paths(see /solated Common Connection section) X 5 完备的隔离型、RS-485/RS-422 数据接口 曲型工作特性 <T (VCC-=5V, IS=VCO-,TA=+25"C, unless otherwise noted. OUTPUT CURRENT VS OUTPUT CURRENT VS RECEIVER OUTPUT HIGH VOLTAGE RECEIVER OUTPUT LOW VOLTAGE RECEIVER OUT PUT HIGH VOLTAGE vs。 TEMPERATURE 80 MEASURED A SO RO DR∨ MEASURED AT ISO RO DRV 500 MEASURED AT ISO RO DE IRO= 8m 450 E出与 9== -5 502 0 300 0051.01.52.0253.0354.04.55.0 00.51.052.0253.0354.0455.0 CUTPUT LOW VOLTAGE(V) OUTPUT HIGH VOLTAGE (V) TEMPERATURE[C RECEIVER OUTPUT LOW VOLTAGE OUTPUT CURRENT VS OUTPUT CURRENT VS vS。 TEMPERATURE DRIVER OUTPUT LOW VOLTAGE DRIVER OUTPUT HIGH VOLTAGE 0.8 MEASURED AT ISO RO DRV Ro= 8mA 90 06 -70 05 石-60 53 20 0 40-20020406080 0123456789101112 -7-6-5-432-10123456 TEMPERATURE (C) OUTPUT LOW VOLTAGE (V) OUTPUT HIGH VOLTAGE (V) DRIVER OUTPUT CURRENT DRIVER DIFFERENTIAL OUTPUT VOLTAGE MAX1480B/MAX1480C/MAX1490B yS, DIFFERENTIAL OUTPUT VOLTAGE VS, TEMPERATURE SHUTDOWN CURRENT VS TEMPERATURI 80 30 040 OR OP 2.9D=HIGH OR OPEN Vcc, DI = VO RL=549 0350:0408c0Ny 28 MEASURED AT VCC1 AND VCO 出9与岳告 030 .7 26 025 020 24 0.15 23 0.10 22 10 005 0 00.51015202.53.03.54.04.550 40-20020406080 40-20020406080 DIFFFRFNTIAI OUTPUT VOI TAG(V) TEMPERATURE (C) TEMPERATURE°C 完备的隔离型、RS-485/RS-422 数据接口 典型工作特性(续)s 5V, FS=VCC, TA=+25C, unless otherwise noted. MAX1480A MAX1480B MAX1480C SUPPLY CURRENT VS TEMPERATURE SUPPLY CURRENT VS TEMPERATURE SUPPLY CURRENT VS TEMPERATURE 549 RL=5492 120 VcC=5.0V Vcc=5.0v Vcc=5.0V 80 目三> Vcc=4.5V 50 Vcc=5.V c=50VBu∞ Vcc=5 v VCC=5.5V Vc=45 40 020020406080 -40-200 02002040608C EMPERATURE(°C) TEMPERATURE (C) TEMFERATURE(°C) MAX1490A MAX1490B SUPPLY CURRENT VS TEMPERATURE SUPPLY CURRENT VS, TEMPERATURE 150 140 180 130 CC VcC=4.5V CC-4.5V 左10 RL=5492 gO Vcc =5.0V Vcc=50V Vc=55 100 70 40-20020406080 200204060 TEMPERATURE(°C TEMPERATUFE(°C) DRIVER DISABLE TIME DRIVER ENABLE TIME VS, TEMPERATURE VS, TEMPERATURE 100 MAX1480B AA△y+Aan 10 VDI=OV MEASURED FROI MAX14803 DE TO VALID OJTPUT 画1F=54 MAX 1480C VDI=V MFASURFD FROM CE TO VALID OUTPUT MAX1480A 0.1 -40-20020406080 4020020406080 TEMPERATURE(°C) TEMPERATURE (C) X 完备的隔离型、RS-485/RS-422 数据接口 典型工作特性(续 <T (VCC--5V,FS=VCC_, VDI'-OV, DE toggled ov to 5v at 5KHZ, TA=+25"C, unless otherwise noted.) MAX1480A MAX1480A DRIVER ENABLE TIME DRIVER DISABLE TIME DRIVER DUTPUT B 2V/d 21/d 2 2Y 200S 200ns/div 20011S/d v MAX1480B MAX1480B DRIVER ENABLE TIME DRIVER DISABLE TIME 2y DRIVER OUTPUT B DRIVER OUTPUT B 2V/div MAX1480C MAX1480C DRIVER ENABLE TIME DRIVER DISABLE TIME 20uS DRIVER DHIVER OUTPUT B OUTPUT B 2V/div 2V/div 2V 500ns 2v 500ns/di/ 500ns/div 完备的隔离型、RS-485/RS-422 数据接口 典型工作特性(续 (VCC = 5V, FS=VCC, DE VcC, VDI= 0V to 5V at 1.25MHZ, TA=+25C, unless otherwise noted. MAX1480A/MAX1490A MAX1480A/MAX1490A RECEIVER tpHL RECEIVER tpLH MAX148090-21 V RECEIVER RECEIVER INPUT A INPUT B RECEIVER RECEIVER inPUT B INPUTA RO/RO 2 MAX1480B/MAX1480C/MAX1490B MAX1480B/MAX1480C/MAX1490B RECEIVER tPHL REcEIVER tpLH MAx1480/90 RECEIVER RECEIVER INPJTA INPUT A V/div 1V/di RECEⅣER INPUT B INPUT B 1V/div 20s 200ns/din 500s/i POWER-UP DELAY TO DRIVER OUTPUTS VALID DRIVER OUTPUT B ( Z FOR MAX1∠90 1vs Vor= OV VsD=5VTO OV AT 1kI X 9 完备的隔离型、RS-485/RS-422 数据接口 mSo寸 引脚说明 引脚 MAX1480A/B/CMAX1490A/B 名称 功能 非隔离侧引脚 12.8.101.2810Vc1cc4逻辑侧非隔离側)+5V电源 3,4 D1,D2 内部连接,这些引脚浮空 GND1 逻辑侧地,连接至GND2(引脚12) 频率选择输入。如果FS=Vc或开路,选择高频开关频率;如果FS=GND,选 择低频开关频率。为了获得最优性能以及最小电源电流,请将FS连接至Vcc或保 持浮空。 7 关断输入。接地时正常工作;当该引脚为逻辑高电平时,关闭电源振荡器。 驱动器输入。当DE为高电平时(MAX1480ABC),如果D为低电平,输出A将被 S∞寸× 强制为低电平,输出B为高电平;同样,如果D为高电平,则强制输出A为高电 平,输出B为低电平。通过一个电阻驱动内部ED明极(对于MAX1480A/BC,参见 图1中的表1;对于MAX149AB,参见图2中的表2)。 驱动器使能输人。DE置高使能驱动器输出A和B。当DE为低电平时,驱动器输 DE 出为高阻态。如果驱动器输出使能,器件作为线驱动器工作;如果驱动器输出为 高阻,器件则作为线接收器工作。通过一个电阻驱动内部LED阴极(图中的表1)。 11 接收器输出。如果A>B并高出200mV,RO将为高电平;如耒A<B且低出200nV, RO将为低电平。集电极开路输出,必须上拉至Vc(图2中的表2)。 12 12 GND2 逻辑侧地,连接至GND1(引脚5)。 13 接收器输出。如果A>B并高出200mV,RO将为低电平;如果A<B且低出2COmV RO将为高电平。集电极开路输出,必须上拉至v(图中的表1) 14 VcCs 逻辑侧(非隔离侧)+5V电源 隔离RS485/RS-422侧引脚 隔离接牧器输出LED。MAX1480ABC的内部LED阳极和MAX1490A/3中的LED阴 SO RO LED,通过一个电阻连接至 ISO RO DRV(对于MAX1480ABC,参见图1的表1 对于MAX1490A/B,参见图2中的表2)。 ISO COM2隔离公共端,连接至 SISO COM1(引脚20) 隔离驱动器使能控制。DE‘置高使能驱动器输出A和B;当DE‘为低电平时,驱动 SO DE DRY器输出为高阻态。如果驱动器输出使能,器件作为线驱动器工作。当驱动器输出 为高阻态时,器件则作为线接收器工作。集电极开路输出,必须上拉至 ISO VCo, 正常工作时连接到 JISO DE IN(参见图1中的表1) 14 SO VcCa2隔离电源。连接至 ISO VCCI1MAX1480ABC的引脚26或MAX1490AB的引脚2 隔离驱动器输人驱动。DE置高时MAX1480ABC),DI的低电平将强制输出A为 低电平,输出B为高电平。同样,DI的高电平将强制输出A为高电平,输出B为 ODDN低电平。连接至 SO DI IN (MAX1480ABC)时器件正常工作。集电极开路输出, 需通过一个电阻上拉至 SO VcC(对于MAX148A/BC,参见图中的表1;对于 MAX1490AB,参见图2中的表2 SO COM1隔离公共端。对手MAX14ABC,连接至S0COM2(脚16)(图1和图2) 10

...展开详情
试读 21P MAX1480A-MAX1490B 中文数据手册.pdf
立即下载 低至0.43元/次 身份认证VIP会员低至7折
    抢沙发
    一个资源只可评论一次,评论内容不能少于5个字
    weixin_38744375 如果觉得有用,不妨留言支持一下
    2019-10-16
    • 至尊王者

      成功上传501个资源即可获取
    关注 私信 TA的资源
    上传资源赚积分,得勋章
    最新推荐
    MAX1480A-MAX1490B 中文数据手册.pdf 33积分/C币 立即下载
    1/21
    MAX1480A-MAX1490B 中文数据手册.pdf第1页
    MAX1480A-MAX1490B 中文数据手册.pdf第2页
    MAX1480A-MAX1490B 中文数据手册.pdf第3页
    MAX1480A-MAX1490B 中文数据手册.pdf第4页
    MAX1480A-MAX1490B 中文数据手册.pdf第5页
    MAX1480A-MAX1490B 中文数据手册.pdf第6页
    MAX1480A-MAX1490B 中文数据手册.pdf第7页

    试读已结束,剩余14页未读...

    33积分/C币 立即下载 >