SP1490E SIPEX | Alldatasheet

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Date: 5/18/04 SP1490E/1491E Full Duplex RS-485 Transceivers © Copyright 2004 Sipex Corporation Preliminary SP1490E/SP1491E Full Duplex RS-485 Transceivers ■ +5V Only ■ Low Power BiCMOS ■ Driver/Receiver Enable (SP1491E) ■ RS-485 and RS-422 Drivers/Receivers ■ Pin Compatible with SN75179 (SP1490E) ■ Pin Compatible with SN75180 (SP1491E) ■ Improved ESD Specifications ±15kV Human Body Model ±15kV IEC1000-4-2 Air Discharge ±8kV IEC1000-4-2 Contact Discharge SP1490E SP1491E 4 5 8VCC SP1490E

8 Pin - nSOICDI

Y RO B A Z GND

DESCRIPTION

FEATURES

APPLICATIONS

■ Industial Networks ■ Telecom ■ Motor Control The SP1490E is a low power differential line driver/receiver meeting RS-485 and RS-422 standards up to 20Mbps. The SP1491E is identical to the SP1490E with the addition of driver and receiver tri-state enable lines. Both products feature ±200mV receiver input sensitivity, over wide common mode range. The SP1490E is available in 8-pin plastic DIP and 8-pin NSOIC packages for operation over the commercial and industrial temperature ranges. The SP1491E is available in 14-pin DIP and 14-pin NSOIC packages for operation over the commercial and industrial temperature ranges. BLOCK DIAGRAM ■ HVAC/ Building Control 4 5 R D Vcc GND RO DI A B Z Y 7 8 Vcc GND RO DI A B Z Y R D 14NC REB DE GND NC NC

Date: 5/18/04 SP1490E/1491E Full Duplex RS-485 Transceivers © Copyright 2004 Sipex Corporation 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. V Input Voltages Output Voltages TMIN to TMAX and VCC = 5V ± 5% unless otherwise noted. PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS SP1490E/1491E DRIVER DC Characteristics Differential Output Voltage 3.5 V CC Volts Unloaded; R = ∞ ; see figure 1 Differential Output Voltage 2 V CC Volts With Load; R = 50 Ω; (RS422); see figure 1 Differential Output Voltage 1.5 V CC Volts With Load; R = 27Ω; (RS485); see figure 1 Change in Magnitude of Driver Differential Output Voltage for Complimentary States 0.2 Volts R = 27 Ω or R = 50Ω; see figure 1 Driver Common-Mode Output Voltage 3 Volts R = 27 Ω or R = 50Ω; see figure 1 Input High Voltage 2.0 Volts Applies to D Input Low Voltage 0.8 Volts Applies to D Input Current ±10 µA Applies to D Driver Short-Circuit Current V OUT = HIGH ±250 mA -7V ≤ VO ≤ +12V VOUT = LOW ±250 mA -7V ≤ VO ≤ +12V SP1490E/1491E DRIVER AC Characteristics Maximum Data Rate 20 Mbps Driver Input to Output 30 40 ns t R/F; RDIFF = 54Ω, CL1 = CL2 = 100pF; see figures 3 and 6 Driver Input to Output 30 40 ns t R/F; RDIFF = 54Ω, CL1 = CL2 = 100pF; see figures 3 and 6 Driver Skew 5 ns see figures 3 and 6, tR/F = | tDPLH - tDPHL | Driver Rise or Fall Time 8 20 ns From 10% to 90%; R DIFF = 54Ω, SP1491E only CL1 = CL2 = 100pF; see figures 3 and 6 tR/F Driver Enable to Output High 20 70 ns C L1 = CL2 = 100pF; see figures 4 and 7; S2 closed Driver Enable to Output Low 40 70 ns C L1 = CL2 = 100pF; see figures 4 and 7; S1 closed Driver Disable Time from Low 40 70 ns C L1 = CL2 = 100pF; see figures 4 and 7; S1 closed Driver Disable Time from High 40 70 ns C L1 = CL2 = 100pF; see figures 4 and 7; S2 closed

ELECTRICAL CHARACTERISTICS

Date: 5/18/04 SP1490E/1491E Full Duplex RS-485 Transceivers © Copyright 2004 Sipex Corporation The SP1490E and SP1491E are full-duplex dif- ferential transceivers that meet the requirements of RS-485 and RS-422. Fabricated with a Sipex proprietary BiCMOS process, both products require a fraction of the power of older bipolar designs. The RS-485 standard is ideal for multi-drop applications or for long-distance interfaces. RS-485 allows up to 32 drivers and 32 receivers to be connected to a data bus, making it an ideal choice for multi-drop applications. Since the cabling can be as long as 4,000 feet, RS-485 transceivers are equipped with a wide (-7V to +12V) common mode range to accommodate ground potential differences. Because RS-485 is a differential interface, data is virtually immune to noise in the transmission line. Driver... The drivers for both the SP1490E and SP1491E have differential outputs. The typical voltage output swing with no load will be 0 volts to +5 volts. With worst case loading of 54Ω across the differential outputs, the driver can maintain greater than 1.5V voltage levels. The driver of the SP1491E has a driver enable control line which is active high. A logic high on DE (pin 4) of the SP1491E will enable the differential driver outputs. A logic low on DE (pin 4) of the SP1491E will tri-state the driver outputs. The SP1490E does not have a driver enable. Receiver... The receivers for both the SP1490E and SP1491E have differential inputs with an input sensitivity as low as ±200mV. Input impedance of the receivers is typically 15KΩ (12KΩ mini- mum). A wide common mode range of -7V to +12V allows for large ground potential differ- ences between systems. The receivers for both the SP1490E and SP1491E are equipped with the fail-safe feature. Fail-safe guarantees that the receiver output will be in a high state when the input is left unconnected and floating. The receiver of the SP1491E has a receiver enable control line which is active low. A logic low on REB (pin 3) of the SP1491E will enable the differential receiver. A logic high on REB (pin 3) of the SP1491E will tri-state the re- ceiver. STUPNIS TUPTUO ED ylnoE1941PS IDY Z x z z INPUTS OUTPUTS RE SP1491E A-B R +0.2V -0.2V open x zTransmit Function Truth Table Recieve Function Truth Table only DETAILED DESCRIPTION

Date: 5/18/04 SP1490E/1491E Full Duplex RS-485 Transceivers © Copyright 2004 Sipex Corporation PACKAGE: 8 PIN NSOIC SEE VIEW C A A2 SEATING PLANE SIDE VIEW TOP VIEW

8 PIN NSOICPACKAGE:

c WITH PLATING BASE METAL b CONTACT AREA Ø 1.65 DIMENSIONS Minimum/Maximum (mm)

8 Pin NSOIC

(JEDEC MS-012, AA - VARIATION) COMMON HEIGHT DIMENSION A b c L e E 1.35

4.90 BSC

0.40 0.31 0.51 SYMBOL MIN NOM MAX 0.10 - 0.25 D 1.75 1.25 0.17 0.25

6.00 BSC

3.90 BSC

1.27 BSC

1.27

1.04 REF

0.25 BSC

15º (Narrow refers to symbol E1) e E E/2 INDEX AREA (D/2 X E1/2) E1/2 D b L ØØ1 Seating Plane Gauge Plane VIEW C

Date: 5/18/04 SP1490E/1491E Full Duplex RS-485 Transceivers © Copyright 2004 Sipex Corporation PACKAGE: 14 PIN NSOIC

14 PIN NSOIC

Ø 1.65 DIMENSIONS Minimum/Maximum (mm) (JEDEC MS-012, AB - VARIATION) COMMON HEIGHT DIMENSION A b c L e E 1.35

8.65 BSC

0.40 0.31 0.51 SYMBOL MIN NOM MAX 0.10 - 0.25 D 1.75 1.25 0.17 0.25 1.27 15º A A2 A1 SIDE VIEW CONTACT AREA c WITH PLATING BASE METAL b L ØØ1 Seating Plane Gauge Plane VIEW C SEE VIEW C TOP VIEW e E E/2 bBINDEX AREA (D/2 X E1/2) E1/2 D (Narrow refers to symbol E1)

Date: 5/18/04 SP1490E/1491E Full Duplex RS-485 Transceivers © Copyright 2004 Sipex Corporation N 1 23 INDEX AREA eA eB E SEE LEAD DETAIL c C b - - .210 .015 - Dimensions in (mm)8 PIN PDIP JEDEC MS-001 (BA) Variation .115 .130 .195 .014 .018 .022 .045 .060 .070 .240 .250 .280 A b c E e eA eB .115 .130 .150L MIN NOM MAX b3 .030 .039 .045 D .008 .010 .014 .355 .365 .400 .005 .300 .310 .325 .100 BSC .300 BSC .430 - - 8 pin PDIP EE1 D A L b b1eb3 PACKAGE: 8 PIN PDIP

Date: 5/18/04 SP1490E/1491E Full Duplex RS-485 Transceivers © Copyright 2004 Sipex Corporation N 1 23 INDEX AREA eA eB E SEE LEAD DETAIL c C b - - .210 .015 - Dimensions in (mm)14 PIN PDIP JEDEC MS-001 (AA) Variation .115 .130 .195 .014 .018 .022 .045 .060 .070 .240 .250 .280 A b c E e eA eB .115 .130 .150L MIN NOM MAX b3 .030 .039 .045 D .008 .010 .014 .735 .750 .775 .005 .300 .310 .325 .100 BSC .300 BSC .430 - - 14 pin PDIP EE1 D A L b b1eb3 PACKAGE: 14 PIN PDIP

Date: 5/18/04 SP1490E/1491E Full Duplex RS-485 Transceivers © Copyright 2004 Sipex Corporation Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability aris ing out of the application or use of any product or circuit described hereing; neither does it convey any license under its patent rights nor the rights of others. Corporation ANALOG EXCELLENCE Sipex Corporation Headquarters and Sales Office

233 South Hillview Drive

Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600 Part Number TopMark Temperature Range Packag e

ORDERING INFORMATION

02/09/04 A Production Release. 04/14/04 B Included 8 Pin NSOIC package spec 05/18/04 C Added Topmark information. Removed PDIP package option.

REVISION HISTORY

/TR = Tape and Reel Pack quantity is 2500 for Narrow SOIC.