SP485ECP

厂商：
SIPEX(迈凌)
封装：
描述：
SP485ECP - Enhanced Low Power Half-Duplex RS-485 Transceivers - Sipex Corporation

数据手册：

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数据手册
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SP485ECP 数据手册

® SP481E/SP485E Enhanced Low Power Half-Duplex RS-485 Transceivers ■ +5V Only ■ Low Power BiCMOS ■ Driver/Receiver Enable for Multi-Drop configurations ■ Low Power Shutdown Mode (SP481E) ■ Enhanced ESD Specifications: +15KV Human Body Model +15KV IEC1000-4-2 Air Discharge +8KV IEC1000-4-2 Contact Discharge DESCRIPTION The SP481E and the SP485E are a family of half-duplex transceivers that meet the specifications of RS-485 and RS-422 serial protocols with enhanced ESD performance. The ESD tolerance has been improved on these devices to over +15KV for both Human Body Model and IEC1000-4-2 Air Discharge Method. These devices are pin-to-pin compatible with Sipex's SP481 and SP485 devices as well as popular industry standards. As with the original versions, the SP481E and the SP485E feature Sipex's BiCMOS design allowing low power operation without sacrificing performance. The SP481E and SP485E meet the requirements of the RS-485 and RS-422 protocols up to 10Mbps under load. The SP481E is equipped with a low power Shutdown mode. RO 1 RE 2 DE 3 DI 4 R 8 Vcc 7B 6A D SP481E and SP485E 5 GND Rev. 5/16/03 SP481E Low Power Half-Duplex RS485 Transceivers © Copyright 2003 Sipex Corporation 1 ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. VCC............................................................................................................+7V Input Voltages Logic........................................................-0.3V to (VCC+0.5V) Drivers..................................................-0.3V to (VCC+0.5V) Receivers................................................................. ±15V Output Voltages Logic........................................................-0.3V to (VCC+0.5V) Drivers...................................................................... ±15V Receivers............................................-0.3V to (VCC+0.5V) Storage Temperature.......................................................-65˚C to +150˚C Power Dissipation per Package 8-pin NSOIC (derate 6.60mW/oC above +70oC)...........................550mW 8-pin PDIP (derate 11.8mW/oC above +70oC)............................1000mW SPECIFICATIONS TMIN to TMAX and VCC = 5V ± 5% unless otherwise noted. PARAMETERS SP481E/SP485E DRIVER DC Characteristics Differential Output Voltage Differential Output Voltage Differential Output Voltage Change in Magnitude of Driver Differential Output Voltage for Complimentary States Driver Common-Mode Output Voltage Input High Voltage Input Low Voltage Input Current Driver Short-Circuit Current VOUT = HIGH VOUT = LOW SP481E/SP485E DRIVER AC Characteristics Maximum Data Rate Driver Input to Output Driver Input to Output (SP485EMN ONLY) Driver Input to Output Driver Input to Output (SP485EMN ONLY) Driver Skew Driver Rise or Fall Time Driver Enable to Output High closed Driver Enable to Output Low closed Driver Disable Time from Low closed Driver Disable Time from High closed MIN. TYP. MAX. UNITS CONDITIONS GND 2 1.5 VCC VCC VCC 0.2 3 Volts Volts Volts Unloaded; R = ∞ ; see Figure 1 with load; R = 50Ω; (RS-422); see Figure 1 with load; R = 27Ω; (RS-485);see Figure 1 Volts Volts Volts Volts µA mA mA R = 27Ω or R = 50Ω; see Figure 1 R = 27Ω or R = 50Ω; see Figure 1 Applies to DE, DI, RE Applies to DE, DI, RE Applies to DE, DI, RE -7V ≤ VO ≤ +12V -7V ≤ VO ≤ +12V 2.0 0.8 ±10 ±250 ±250 10 20 20 30 30 60 80 Mbps ns ns RE = 5V, DE = 5V; RDIFF = 54Ω, CL1 = CL2 = 100pF tPLH; RDIFF = 54Ω, CL1 = CL2 = 100pF; see Figures 3 and 5 tPLH; RDIFF = 54Ω, CLI = CL2 = 100pF; See Figures 3 and 5 tPHL; RDIFF = 54Ω, CL1 = CL2 = 100pF; see Figures 3 and 5 tPHL; RDIFF = 54Ω, CL1 = CL2 = 100pF; see Figures 3 and 5 see Figures 3 and 5, tSKEW = | tDPLH - tDPHL | From 10% to 90%; RDIFF = 54Ω, CL1 = CL2 = 100pF; see Figures 3 & 6 CL = 100pF; see Figures 4 & 6; S2 CL = 100pF; see Figures 4 & 6; S1 CL = 100pF; see Figures 4 & 6; S1 CL = 100pF; see Figures 4 & 6; S2 20 20 30 30 5 60 80 10 40 70 70 70 70 ns ns ns ns ns ns ns ns 3 15 40 40 40 40 Rev. 5/16/03 SP481E Low Power Half-Duplex RS485 Transceivers © Copyright 2003 Sipex Corporation 2 SPECIFICATIONS (continued) TMIN to TMAX and VCC = 5V ± 5% unless otherwise noted. PARAMETERS MIN. SP481E/SP485E RECEIVER DC Characteristics Differential Input Threshold -0.2 Differential Input Threshold -0.4 (SP485EMN ONLY) Input Hysteresis Output Voltage High 3.5 Output Voltage Low Three-State (High Impedance) Output Current Input Resistance 12 Input Current (A, B); VIN = 12V Input Current (A, B); VIN = -7V Short-Circuit Current 7 SP481E/SP485E RECEIVER AC Characteristics Maximum Data Rate 10 Receiver Input to Output 20 Receiver Input to Output Diff. Receiver Skew ItPLH-tPHLI Receiver Enable to Output Low Receiver Enable to Output High Receiver Disable from Low Receiver Disable from High SP481E Shutdown Timing Time to Shutdown 50 Driver Enable from Shutdown to Output High Driver Enable from Shutdown to Output Low Receiver Enable from Shutdown to Output High Receiver Enable from Shutdown to Output Low POWER REQUIREMENTS Supply Voltage +4.75 Supply Current SP481E/485E No Load SP481E Shutdown Mode ENVIRONMENTAL AND MECHANICAL Operating Temperature Commercial (_C_) 0 Industrial (_E_) -40 (_M_) -40 Storage Temperature -65 Package Plastic DIP (_P) NSOIC (_N) Rev. 5/16/03 TYP. MAX. UNITS CONDITIONS +0.2 +0.4 20 0.4 ±1 15 +1.0 -0.8 95 Volts Volts mV Volts Volts µA kΩ mA mA mA -7V ≤ VCM ≤ +12V -7V ≤ VCM ≤ +12V VCM = 0V IO = -4mA, VID = +200mV IO = +4mA, VID = -200mV 0.4V ≤ VO ≤ 2.4V; RE = 5V -7V ≤ VCM ≤ +12V DE = 0V, VCC = 0V or 5.25V, VIN = 12V DE = 0V, VCC = 0V or 5.25V, VIN = -7V 0V ≤ VO ≤ VCC RE = 0V, DE = 0V tPLH; RDIFF = 54Ω, CL1 = CL2 = 100pF; Figures 3 & 7 tPHL; RDIFF = 54Ω, CL1 = CL2 = 100pF; Figures 3 & 7 RDIFF = 54Ω; CL1 = CL2 = 100pF; Figures 3 & 7 CRL = 15pF; Figures 2 & 8; S1 closed CRL = 15pF; Figures 2 & 8; S2 closed CRL = 15pF; Figures 2 & 8; S1 closed CRL = 15pF; Figures 2 & 8; S2 closed 45 45 13 100 100 Mbps ns ns ns 20 45 45 45 45 70 70 70 70 ns ns ns ns 200 40 40 300 300 600 100 100 1000 1000 +5.25 ns ns ns ns ns Volts RE = 5V, DE = 0V CL = 100pF; See Figures 4 & 6; S2 closed CL = 100pF; See Figures 4 & 6; S1 closed CL = 15pF; See Figures 2 & 8; S2 closed CL = 15pF; See Figures 2 & 8; S1 closed 900 600 10 µA µA µA RE, DI = 0V or VCC; DE = VCC RE = 0V, DI = 0V or 5V; DE = 0V DE = 0V, RE=VCC +70 +85 +125 +150 °C °C °C °C SP481E Low Power Half-Duplex RS485 Transceivers © Copyright 2003 Sipex Corporation 3 PIN FUNCTION RO 1 R 8 VCC Pin 1 – RO – Receiver Output. Pin 2 – RE – Receiver Output Enable Active LOW. RE 2 7 B Pin 3 – DE – Driver Output Enable Active HIGH. Pin 4 – DI – Driver Input. Pin 5 – GND – Ground Connection. DE 3 6 A D DI 4 SP485 Top View 5 GND Pin 6 – A – Driver Output/Receiver Input Non-inverting. Pin 7 – B – Driver Output/Receiver Input Inverting. Pin 8 – Vcc – Positive Supply 4.75V

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SP485ECP

1. 物料型号： - SP481E/SP485E是增强型低功耗半双工RS-485收发器，符合RS-485和RS-422串行协议规范，并具有增强的ESD性能。

2. 器件简介： - SP481E和SP485E是半双工收发器，它们在ESD性能上得到了增强，能够承受超过±15kV的人体模型和IEC1000-4-2空气放电方法的ESD耐受性。这些设备与Sipex的SP481和SP485设备以及流行行业标准引脚对引脚兼容。SP481E和SP485E采用Sipex的BiCMOS设计，允许在不牺牲性能的情况下进行低功耗运行。

3. 引脚分配： - Pin 1 – RO – 接收器输出。 - Pin 2 – RE – 接收器输出使能，低电平有效。 - Pin 3 – DE – 驱动器输出使能，高电平有效。 - Pin 4 – DI – 驱动器输入。 - Pin 5 – GND – 地连接。 - Pin 6 – A – 驱动器输出/接收器输入非反相。 - Pin 7 – B – 驱动器输出/接收器输入反相。 - Pin 8 – Vcc – 正电源，供电电压在4.75V至5.25V之间。

4. 参数特性： - 工作电压：4.75V至5.25V。 - 最大数据速率：10Mbps。 - 驱动器输出电压：无负载时0V至+5V，最坏情况下负载为54Ω时，驱动器能维持大于1.5V的电压水平。 - 接收器输入灵敏度：低至±200mV。 - 接收器输入阻抗：典型值为15kΩ（最小12kΩ）。 - 共模范围：-7V至+12V。

5. 功能详解： - 驱动器：SP481E和SP485E的驱动器输出是差分输出，符合RS-485和RS-422标准。驱动器具有使能控制线，高电平有效。 - 接收器：SP481E和SP485E的接收器具有差分输入，输入阻抗高，共模范围宽，具有三态使能控制引脚。 - 关闭模式：SP481E具有关闭模式，通过将DE和RE同时置为低电平和高电平，可以将SP481E置于关闭模式，此时供电电流降至通常1µA。 - ESD耐受性：SP481E家族在所有驱动器输出和接收器输入引脚上都集成了强化的ESD单元，能够在至少±15kV的ESD测试下无损坏或锁定。

6. 应用信息： - RS-485标准适用于多点应用和长距离接口，允许多达32个驱动器和32个接收器连接到数据总线上，适合多点应用。由于电缆长度可达4000英尺，RS-485收发器配备了宽共模范围以适应系统之间的地面电位差异。 7. 封装信息： - 提供了Plastic Dual–In–Line (NARROW)和Plastic Small Outline (SOIC) (NARROW)两种封装方式的详细尺寸信息。

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