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SP488E Dataheets PDF



Part Number SP488E
Manufacturers Sipex
Logo Sipex
Description Enhanced Quad RS-485/RS-422 Line Receivers
Datasheet SP488E DatasheetSP488E Datasheet (PDF)

® SP488E and SP489E Enhanced Quad RS-485/RS-422 Line Receivers s s s s s s s RS-485 or RS-422 Applications Quad Differential Line Receivers Receiver Output Disable –7V to +12V Common Mode Input Range 1mA Supply Current Single +5V Supply Operation Superior Drop-in Replacement for SN75173, SN75175, LTC488 and LTC489 s Improved ESD Specifications: +15kV Human Body Model +15kV IEC1000-4-2 Air Discharge +8kV IEC1000-4-2 Contact Discharge DESCRIPTION… The SP488E and SP489E are low-power quad differe.

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® SP488E and SP489E Enhanced Quad RS-485/RS-422 Line Receivers s s s s s s s RS-485 or RS-422 Applications Quad Differential Line Receivers Receiver Output Disable –7V to +12V Common Mode Input Range 1mA Supply Current Single +5V Supply Operation Superior Drop-in Replacement for SN75173, SN75175, LTC488 and LTC489 s Improved ESD Specifications: +15kV Human Body Model +15kV IEC1000-4-2 Air Discharge +8kV IEC1000-4-2 Contact Discharge DESCRIPTION… The SP488E and SP489E are low-power quad differential line receivers 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 superior drop-in replacements to Sipex's SP488 and SP489 devices as well as popular industry standards. As with the original versions, the SP488E features a common receiver enable control and the SP489E provides independent receiver enable controls for each pair of receivers. Both feature wide common-mode input ranges. The receivers have a fail-safe features which forces a logic "1" output when receiver inputs are left floating. Both are available in 16-pin plastic DIP and SOIC packages. RI1B RI1A RO1 EN RO2 RI2A RI2B GND 1 2 3 4 5 6 7 8 SP488E 1 4 16 15 14 13 12 VCC RI4B RI4A RO4 EN RO3 RI3A RI3B RI1B RI1A RO1 EN1/EN2 RO2 RI2A RI2B GND 1 2 3 4 5 6 7 8 SP489E 1 4 16 15 14 13 12 VCC RI4B RI4A RO4 EN3/EN4 RO3 RI3A RI3B 2 3 11 10 9 2 3 11 10 9 SP488E/489EDS/07 SP488E/489E Enhanced Quad RS-485/RS-422 Line Receivers © Copyright 2000 Sipex Corporation 1 ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these 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 .................................... –0.5V to (VCC +0.5V) Receiver ..................................................... +14V Receiver Output Voltage ........ –0.5V to (VCC +0.5V) Input Currents Logic ........................................................ +25mA Storage Temperature ................. –65°C to +150°C Power Dissipation Plastic DIP .............................................. 375mW (derate 7mW/°C above +70°C) Small Outline .......................................... 375mW (derate 7mW/°C above +70°C) Lead Temperature (soldering, 10 sec) ......... 300°C SPECIFICATIONS VCC = 5V±5%; typicals at 25°C; TMIN ≤ TA ≤ TMAX unless otherwise noted. PARAMETER DC CHARACTERISTICS Digital Inputs Voltage VIL VIH Input Current RECEIVER INPUTS Input Resistance Differential Input Threshold Input Current (A, B) MIN. TYP. MAX. UNIT CONDITIONS EN, EN, EN1/EN2, EN3/EN4 0.8 2.0 +2 Volts Volts µA 0V ≤ VIN ≤ VCC 12 –0.2 +0.2 +1.0 –0.8 kOhm Volts mA mA Mbps Maximum Data Rate 10 RECEIVER OUTPUTS Output Voltage VOH 3.5 VOL High Impedance Output Current –7V ≤ VCM ≤ 12V –7V ≤ VCM ≤ 12V VCC = 0V or 5.25V; IIN2 VIN = +12V VIN = –7V 0.4 +1 V V µA 0.4V ≤ VO ≤ 2.4V, EN = O, EN = 1, EN1 / EN2 = EN3 / EN4 = O IO = –4mA; VID = +0.2V IO = +4mA; VID = –0.2V POWER REQUIREMENTS Supply Voltage 4.75 5.00 5.25 Supply Current 1 5 ENVIRONMENTAL AND MECHANICAL Operating Temperature –C 0 +70 –E –40 +85 Storage Temperature –65 +150 Package –_P 16–pin Plastic DIP –_T 16–pin SOIC Volts mA No load °C °C °C SP488E/489EDS/07 SP488E/489E Enhanced Quad RS-485/RS-422 Line Receivers © Copyright 2000 Sipex Corporation 2 100pF EN A S1 RCVR ROn CL 1kΩ DI DRIVER B 54Ω 100pF VCC RCVR CL 1kΩ S2 EN 1/4 SP486E 1/4 SP488E Figure 1. Timing Test Circuit Figure 2. Enable/Disable Timing Test Circuit SP488 PINOUT Pin 1 — RI1B — Receiver 1 input B. Pin 2 — RI1A — Receiver 1 input A. Pin 3 — RO1 — Receiver 1 Output — If Receiver 1 output is enabled, if RI1A > RI1B by 200mV, Receiver output is high. If Receiver 1 output is enabled, and if RI1A < RI1B by 200mV, Receiver 1 output is low. Pin 4 — EN — Receiver Output Enable. Please refer to SP488E Truth Table (1). Pin 5 — RO 2 — Receiver 2 Output — If Receiver 2 output is enabled, if RI2A > RI2B by 200mV, Receiver 2 output is high. If Receiver 2 output is enabled, and if RI2A < RI2B by 200mV, Receiver 2 output is low. PINOUT Pin 6 — RI2A — Receiver 2 input A. Pin 7 — RI2B — Receiver 2 input B. Pin 8 — GND — Digital Ground. Pin 9 — RI3B — Receiver 3 input B. Pin 10 — RI3A — Receiver 3 input A. Pin 11 — RO3 — Receiver 3 Output — If Receiver 3 output is enabled, if RI3A > RI3B by 200mV, Receiver 3 output is high. If Receiver 3 output is enabled, and if RI3A < RI3B by 200mV, Receiver 3 output is low. Pin 12 — EN — Receiver Output Enable. Please refer to SP488E Truth Table (1). RI1B RI1A RO1 EN RO2 RI2A RI2B GND 1 2 3 4 5 6 7 8 SP488E 1 4 16 15 14 13 12 VCC RI4B RI4A RO.


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