SP3486CP

SP3486 SIPEX | Alldatasheet

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10/15/02 SP3486/3487 Low Power Quad RS485/422 Line Drivers © Copyright 2002 Sipex Corporation

DESCRIPTION

The SP3486 and the SP3487 are +3.3V low power quad drivers that meet the specifications of the RS-485 and RS-422 serial protocols. These devices are pin-to-pin compatible with Sipex's SP486 and SP487 devices as well as popular industry standards. The SP3486 and SP3487 feature Sipex's BiCMOS process allowing low power operation without sacrificing performance. The SP3486 and SP3487 meet the electrical specifications of RS-485 and RS-422 serial protocols up to 10Mbps under load. The SP3486 features a common driver enable control. The SP3487 provides independent driver enable controls for each pair of drivers. Both devices feature tri-state outputs and a -7V to +12V common-mode input voltage range. ■ RS-485 or RS-422 Quad Differential Line Drivers ■ Operates from a single +3.3V supply ■ Interoperable with +5.0V logic ■ Tri-state Output Control ■ -7V to +12V Common-Mode Input Voltage Range ■ Common Driver Enable Control (SP3486) ■ Independent Driver Enable Controls for each pair of Drivers (SP3487 ) ■ Compatibility with LTC486 and SN75172 (SP3486 ) ■ Compatibility with LTC487 and SN75174 (SP3487 ) SP3487DI1 DO 1A DO 1B EN 1/EN2 DO 2B DO 2A DI2 GND VCC DI4 DO 4A DO 4B EN 3/EN4 DO 3B DO 3A DI3 SP3486DI1 DO 1A DO 1B EN DO 2B DO 2A DI2 GND VCC DI4 DO 4A DO 4B EN DO DO 3A DI3 SP3486 and SP3487 +3.3V Low Power Quad RS-485/RS-422 Line Drivers

10/15/02 SP3486/3487 Low Power Quad RS485/422 Line Drivers © Copyright 2000 Sipex Corporation 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. V Input Voltages Input Currents Power Dissipation (derate 7mW/°C above +70°C) (derate 7mW/°C above +70°C) PARAMETER MIN. TYP. MAX. UNIT CONDITIONS DC CHARACTERISTICS Digital Inputs DI, EN, EN, EN1/EN2, EN3/EN4 Voltage VIL 0.8 Volts VIH 2.0 Volts Input Current ±2 µAV IN = 0V to VCC DRIVER OUTPUTS Differential Voltage V CC Volts unloaded

2 Volts R = 50 Ω(RS-422)

1.5 V CC Volts R = 27Ω (RS-485); Figure 1

Common Mode Output Voltage 3 Volts R = 27 Ω or 50Ω; Figure 1 Change in Common Mode Output Magnitude 0.2 Volts R = 27Ω or 50Ω; Figure 1 for Complementary Output State R = 50 Ω (RS-422) R = 27Ω (RS-485) Maximum Data Rate 10 Mbps Short–circuit Current V OH ±250 mA -7V ≤VO ≤ +12V VOL ±250 mA -7V ≤VO ≤ +12V High Impedance Output Current 1 µAV O = -7V to +12V, TA=25oC POWER REQUIREMENTS Supply Voltage 3.00 3.30 3.60 Volts Supply Current 3.00 µA No load, output enabled 0.10 µA No load, output disabled ENVIRONMENTAL AND MECHANICAL Operating Temperature –C 0 +70 °C –E -40 +85 °C Storage Temperature -65 +150 °C Package –_P 16–pin Plastic DIP –_T 16–pin SOIC SPECIFICATIONS VCC = 3.3V±5%; typicals at 25°C; TMIN ≤ TA ≤ TMAX unless otherwise noted.

Pin 13 — DO4B — Driver 4 output B. Pin 14 — DO4A — Driver 4 output A. Pin 2 — DO1A — Driver 1 output A. Pin 3 — DO1B — Driver 1 output B. Enable. Please refer to SP3487 Truth Table (2). Pin 5 — DO2B — Driver 2 output B. Pin 6 — DO2A — Driver 2 output A. Table 1. SP3486 Truth Table Table 2. SP3487 Truth Table Pin 8 — GND — Digital Ground. Pin 10 — DO3A — Driver 3 output A. Pin 11 — DO3B — Driver 3 output B. Enable. Please refer to SP3487 Truth Table (2). Pin 13 — DO4B — Driver 4 output B. Pin 14 — DO4A — Driver 4 output A.

10/15/02 SP3486/3487 Low Power Quad RS485/422 Line Drivers © Copyright 2002 Sipex Corporation AC PARAMETERS VCC = +3.3V±5%; typicals at 25°C; TAMB = 25°C unless otherwise noted. PARAMETER MIN. TYP. MAX. UNIT CONDITIONS PROPAGATION DELAY Driver Input to Output Figure 2 and 5 Low to High (tPLH )2 0 4 06 0 n s High to Low (tPHL )2 0 4 06 0 n s Differential Driver Skew 5 10 ns | t PHL (Y) - tPLH (Y) |, | tPHL (Z) - tPLH (Z) | , Figures 2 and 5 Driver Rise Time (tR ) 10% to 90% RDIFF = 60Ω SP3486 10 ns SP3487 10 ns Driver Fall Time (t F) 90% to 10% RDIFF = 60Ω SP3486 10 ns SP3487 10 ns DRIVER ENABLE To Output High 110 ns Figures 3 and 6 To Output Low 110 ns Figures 4 and 6 DRIVER DISABLE From Output Low 110 ns Figures 4 and 6 From Output High 110 ns Figures 3 and 6

FEATURES

The SP3486 and the SP3487 are +3.3V low power quad line drivers that meet the specifications of the RS-485 and RS-422 serial protocols. These devices are pin-to-pin compatible with Sipex's SP486 and SP487 devices as well as popular industry standards. The SP3486 and SP3487 devices feature Sipex's BiCMOS process allowing low power operation without sacrificing performance. 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 accomodate ground potential differences. Data is virtually immune to noise in the transmission line because the RS-485 protocol is a differential interface. Driver The drivers for both the SP3486 and SP3487 have differential outputs. The typical voltage output swing with no load will be 0V to +5V. With worst case loading of 54Ω across the differential outputs, the driver can maintain greater than +1.5V voltage levels. The drivers of the SP3486 feature active HIGH and active LOW common driver enable controls. Refer to SP3486 Truth Table in Table 1. The SP3487 provides independent, active high driver enable controls for each pair of drivers. Refer to SP3487 Truth Table in Table 2. The driver outputs are short-circuit limited to 250mA. The SP3486 and SP3487 drivers meet the electrical specifications of RS-485 and RS-422 serial protocols up to 10Mbps under load.

10/15/02 SP3486/3487 Low Power Quad RS485/422 Line Drivers © Copyright 2002 Sipex Corporation D ALTERNATE END PINS (BOTH ENDS) D1 = 0.005" min. (0.127 min.) E PACKAGE: PLASTIC DUAL–IN–LINE (NARROW) DIMENSIONS (Inches) Minimum/Maximum (mm) A = 0.210" max. (5.334 max). C ØL A1 = 0.015" min. (0.381min.) B e = 0.100 BSC (2.540 BSC) eA = 0.300 BSC (7.620 BSC) B C D E L Ø 16–PIN 0.115/0.195 (2.921/4.953) 0.014/0.022 (0.356/0.559) 0.045/0.070 (1.143/1.778) 0.008/0.014 (0.203/0.356) 0.780/0.800 (19.812/20.320) 0.300/0.325 (7.620/8.255) 0.240/0.280 (6.096/7.112) 0.115/0.150 (2.921/3.810) 0°/ 15° (0°/15°)

10/15/02 SP3486/3487 Low Power Quad RS485/422 Line Drivers © Copyright 2000 Sipex Corporation D EH PACKAGE: PLASTIC SMALL OUTLINE (SOIC) (WIDE) DIMENSIONS (Inches) Minimum/Maximum (mm) A Ø LBe A B D E e H L Ø 16–PIN 0.093/0.104 (2.352/2.649) 0.004/0.012 (0.102/0.300) 0.013/0.020 (0.330/0.508) 0.398/0.413 (10.10/10.49) 0.291/0.299 (7.402/7.600)

0.050 BSC

(1.270 BSC) 0.394/0.419 (10.00/10.64) 0.016/0.050 (0.406/1.270) 0°/8° (0°/8°)

10/15/02 SP3486/3487 Low Power Quad RS485/422 Line Drivers © Copyright 2002 Sipex Corporation

ORDERING INFORMATION

Quad RS485 Drivers: Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising 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 SIGNAL PROCESSING EXCELLENCE Please consult the factory for pricing and availability on a Tape-On-Reel option. Sipex Corporation Headquarters and Sales Office

233 South Hillview Drive

Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600 Sales Office

22 Linnell Circle

Billerica, MA 01821 TEL: (978) 667-8700 FAX: (978) 670-9001 e-mail: sales@sipex.com