SP483ECN

® SP483E Enhanced Low EMI Half-Duplex RS-485 Transceiver s +5V Only s Low Power BiCMOS s Driver/Receiver Enable for Multi-Drop configurations s Enhanced ESD Specifications: +15KV Human Body Model +15KV IEC1000-4-2 Air Discharge +8KV IEC1000-4-2 Contact Discharge s Low EMI Transceiver limited to 250kbps Now Available in Lead Free Packaging DESCRIPTION The SP483E is a half-duplex transceiver that meets the specifications of RS-485 and RS-422 serial protocols with enhanced ESD performance. The ESD tolerance has been improved on this device to over ±15kV for both Human Body Model and IEC1000-4-2 Air Discharge Method. This device is pin-to-pin compatible with Sipex's SP483 device as well as popular industry standards. As with the original version, the SP483E features Sipex's BiCMOS design allowing low power operation without sacrificing performance. The SP483E meet the requirements of the RS-485 and RS-422 protocols up to 250kbps under load. The SP483E is internally slew rate limited to reduce EMI and can meet the requirements of RS-485 and RS-422 up to 250kbps. The SP483E is also equipped with a low power Shutdown mode. RO 1 RE 2 DE 3 DI 4 R 8 Vcc 7B 6A D SP483E 5 GND SP483EDS/05 SP483E Low EMI Half-Duplex RS485 Transceiver © Copyright 2000 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...........................................................................500mW SPECIFICATIONS TMIN to TMAX and VCC = 5V ± 5% unless otherwise noted. PARAMETERS SP483E DRIVER DC Characteristics Differential Output Voltage Differential Output Voltage MIN. TYP. MAX. UNITS CONDITIONS GND 2 VCC VCC VCC 0.2 3 0.8 10µA 1µ A ±250 ±250 Volts Volts Volts Volts Volts Volts Volts Differential Output Voltage 1.5 Change in Magnitude of Driver Differential Output Voltage for Complimentary States Driver Common-Mode Output Voltage Input High Voltage 2.0 Input Low Voltage Input Current Driver Input Control Lines Driver Short-Circuit Current VOUT = HIGH VOUT = LOW SP483E DRIVER AC Characteristics Maximum Data Rate 250 Driver Input to Output Driver Input to Output Driver Skew Driver Rise or Fall Time Driver Enable to Output High Driver Enable to Output Low Driver Disable Time from Low Driver Disable Time from High SP481E/SP485E RECEIVER DC Characteristics Differential Input Threshold Input Hysteresis Output Voltage High Output Voltage Low Three-State (High Impedance) Output Current Input Resistance Input Current (A, B); VIN = 12V Input Current (A, B); VIN = -7V Short-Circuit Current SP483EDS/05 Unloaded; R = ∞ ; see Figure 1 with load; R = 50Ω; (RS-422); see Figure 1 with load; R = 27Ω; (RS-485); see Figure 1 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 DI DE, RE -7V ≤ VO ≤ +12V -7V ≤ VO ≤ +12V RE = 5V, DE = 5V; RDIFF = 54Ω, CL1 = CL2 = 100pF tPLH; 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 and 6 CL = CL = CL = CL = 100pF; see Figures 4 & 6; S2 closed 100pF; see Figures 4 & 6; S1 closed 15pF; see Figures 2 & 8; S1 closed 15pF; see Figures 2 & 8; S2 closed mA mA Kbps 800 800 100 2000 2000 800 2000 2000 2000 3000 3000 ns ns ns ns ns ns ns ns 250 250 250 250 250 300 300 -0.2 20 3.5 +0.2 0.4 ±1 Volts mV Volts Volts µA kΩ mA mA mA -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 ≤ VCM ≤ VCC © Copyright 2000 Sipex Corporation 12 7 15 +1.0 -0.8 95 SP483E Low EMI Half-Duplex RS485 Transceiver 2 SPECIFICATIONS (continued) TMIN to TMAX and VCC = 5V ± 5% unless otherwise noted. PARAMETERS SP483E RECEIVER AC Characteristics Maximum Data Rate Receiver Input to Output 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 SP483E Shutdown Timing Time to Shutdown 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 Supply Current SP483E No Load SP483E Shutdown Mode ENVIRONMENTAL AND MECHANICAL Operating Temperature Commercial (_C_) Industrial (_E_) Storage Temperature Package Plastic DIP (_P) NSOIC (_N) MIN. TYP. MAX. UNITS CONDITIONS 250 250 250 100 45 45 45 45 2000 2000 Kbps ns ns ns 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 70 70 70 70 ns ns ns ns 50 200 600 2000 2000 ns ns ns ns ns 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 300 300 2500 2500 +4.75 900 600 +5.25 Volts µA µA RE = 0V, DI = 0V or VCC; DE = VCC RE = 0V, DI = 0V or 5V; DE = 0V DE = 0V, RE=VCC 10 µA 0 -40 -65 +70 +85 +150 °C °C °C SP483EDS/05 SP483E Low EMI Half-Duplex RS485 Transceiver © Copyright 2000 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