SP385EET-L

SP385EEA-L-TR EXAR | Alldatasheet

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Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com SP385E_100_030811 SP385E Enhanced +3V or +5V RS-232 Line Driver/Receiver Exar's SP385E is an enhanced version of the SP200 family of RS-232 line drivers/receivers. The SP385E offers +3.3V operation for EIA-562 and EIA-232 applications. The SP385E features offered maintains the same performance features offered in its predecessors. The SP385E is available in plastic SOIC or SSOP packages operating over the commercial and industrial temperature ranges. The SP385E is pin compatible to the LTC1385 EIA-562 transceiver with the exception that the drivers are disabled with the ON/OFF pin.

FEATURES

■ Operates from 3.3V or 5V Power Supply ■ Meets all EIA-232D and V.28 Specifica- tions at 5V. ■ Meets EIA-562 Specifications at 3.3V ■ Two Drivers and Receivers ■ Operates with 0.1µF to 10µF Capacitors ■ High data rate - 120kbps Under Load ■ Low Power Shutdown ≤ 1µA ■ 3-State TTL/CMOS Receiver Outputs ■ Low Power CMOS - 5mA Operation ■ Improved ESD Specifications: +15kV Human Body Model +15kV IEC61000-4-2 Air Discharge +8kV IEC61000-4-2 Contact Discharge

DESCRIPTION

TyPICAL APPLICATION CIRCUIT Now Available in Lead Free Packaging ON/OFF V GND T OUT R IN R OUT T IN T IN R OUT N/C C + C - C + C - T OUT R IN 1 CC SP385E R2R1 T2T1 TTL/CMOS INPUTS RS232 OUTPUTS TTL/CMOS OUTPUTS RS232 INPUTS Charge Pump

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com SP385E_100_030811 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 and cause permanent damage to the device. Input Voltages Output Voltages Short-Circuit Duration VCC = +3.3V +10%; cap on (V+) and (V-) = 1.0µF, C1 = C2 = 0.1µF; TMIN to TMAX unless otherwise noted.

ELECTRICAL CHARACTERISTICS

PARAMETER MIN. TyP. MAX. UNITS CONDITIONS TTL INPUT Input Logic Threshold LOW 0.8 V TxIN, ON/OFF, Vcc = 3.3V Input Logic Threshold HIGH 2.0 V TxIN, ON/OFF, Vcc = 3.3V Logic Pullup Current 15 200 µA TIN = 0V Maximum Data Rate 120 kbps CL = 2500pF, RL = 3kΩ TTL OUTPUT TTL/CMOS Output Voltage LOW 0.5 V IOUT = 3.2mA, Vcc = 3.3V TTL/CMOS Output Voltage HIGH 2.4 V IOUT = -1.0mA Leakage Current +0.05 +10 µA ON/OFF = 0V, 0V ≤ VOUT ≤ Vcc, TA = 25°C EIA-562 OUTPUT Output Voltage Swing +3.7 +4.2 V All transmitter outputs loaded with 3kΩ to GND Power Dissipation (derate 9.25mW/°C above +70 °C) (derate 15.7mW/°C above +70 °C)

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com SP385E_100_030811 PARAMETER MIN. TyP. MAX. UNITS CONDITIONS EIA-562 OUTPUT (continued) Power-Off Output Resistance 300 Ω VCC = 0V, VOUT=+2V Output Short-Circuit Current +10 mA Infinite Duration EIA-562 INPUT Input Voltage Range -15 15 V Input Threshold LOW 0.8 1.2 V VCC = 3.3V, TA = +25°C Input Threshold HIGH 1.7 2.4 V VCC = 3.3V, TA = +25°C Input Hysteresis 0.2 0.5 1.0 V VCC = 3.3V, TA = +25°C Input Resistance 3 5 7 kΩ VIN = 15V to -15V DyNAMIC CHARACTERISTICS Driver Propagation Delay 4.0 µs TTL to RS-562 Receiver Propagation Delay 1.5 µs RS-562 to TTL Instantaneous Slew Rate 30 V/µs CL = 10pF, RL = 3kΩ - 7kΩ: TA = +25°C Transition-Region Slew Rate 10 V/µs CL = 2500pF, RL = 3kΩ; Measured from +2V to -2V or -2V to +2V Output Enable Time 300 ns Output Disable Time 1000 ns POWER REQUIREMENTS Vcc Power Supply Current 3 6 mA No load, TA = +25°C; Vcc = 3.3V Vcc Power Supply Current 8 mA All transmitters RL = 3kΩ, TA = +25°C Shutdown Supply Current 0.01 5 µA Vcc = 3.3V, TA = +25°C VCC = +3.3V +10%; cap on (V+) and (V-) = 1.0µF, C1 = C2 = 0.1µF; TMIN to TMAX unless otherwise noted.

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com SP385E_100_030811 VCC = +3.3V +10%; cap on (V+) and (V-) = 1.0µF, C1 = C2 = 0.1µF; TMIN to TMAX unless otherwise noted. PARAMETER MIN. TyP. MAX. UNITS CONDITIONS TTL INPUT Input Logic Threshold LOW 0.8 V TxIN, ON/OFF Input Logic Threshold HIGH 2.0 V TxIN, ON/OFF Logic Pullup Current 15 200 µA TIN = 0V Maximum Data Rate 120 kbps CL = 2500pF, RL = 3kΩ TTL OUTPUT TTL/CMOS Output Voltage LOW 0.4 V IOUT = 3.2mA, Vcc = 5.0V TTL/CMOS Output Voltage HIGH 3.5 V IOUT = -1.0mA, Vcc = 5.0V Leakage Current +0.05 +10 µA ON/OFF = 0V, 0V ≤ VOUT ≤ Vcc, TA = 25°C EIA-232 OUTPUT Output Voltage Swing +5.0 +9 V All transmitter outputs loaded with 3kΩ to GND Power-Off Output Resis- tance 300 Ω VCC = 0V, VOUT=+2V Output Short-Circuit Current +18 mA Infinite Duration EIA-232 INPUT Input Voltage Range -15 15 V Input Threshold LOW 0.8 1.2 V VCC = 5V, TA = +25°C Input Threshold HIGH 1.7 2.4 V VCC = 5V, TA = +25°C Input Hysteresis 0.2 0.5 1.0 V VCC = 5V, TA = +25°C Input Resistance 3 5 7 kΩ VIN = 15V to -15V DyNAMIC CHARACTERISTICS Propagation Delay 1.5 µs RS-232 to TTL Instantaneous Slew Rate 30 V/µs CL = 10pF, RL = 3kΩ - 7kΩ: TA = +25°C Transition-Region Slew Rate 10 V/µs CL = 2500pF, RL = 3kΩ; Measured from +3V to -3V or -3V to +3V Output Enable Time 400 ns Output Disable Time 250 ns POWER REQUIREMENTS Vcc Power Supply Current 10 15 mA No load, TA = +25°C; Vcc = 5V Vcc Power Supply Current 25 mA All transmitters RL = 3kΩ, TA = +25°C Shutdown Supply Current 1 10 µA Vcc = 5V, TA = +25°C

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com SP385E_100_030811 TyPICAL PERFORMANCE CHARACTERISTICS 0 2 4 6 8 1 0 1 2 1 4 Load Current (mA) V– Voltage (V olts) -10 -11 VCC = 5V VCC = 4V 0 5 10 15 20 Load Current (mA) V+ (Volts) 25 30 35 40 VCC = 4V VCC = 5V -55 -40 0 2 5 7 0 8 5 125 Temperature ( C) 30ICC (mA) VCC = 5V VCC = 4V VCC = 3V VCC (Volts) 6.8 7.4 7.6 7.8 8.0 8.2 8.4 VOH (Volts) 7.0 7.2 Load current = 0mA TA = 25 C PINOUT ON/OFF V GND T OUT R IN R OUT T IN T IN R OUT N/C C + C - C + C - T OUT R IN 1 CC SP385E ON/OFF V GND T OUT R IN R OUT T IN T IN R OUT N/C N/C C + C - C + C - T OUT R IN N/C 1 CC SP385E 18-pin WSOIC 20-pin SSOP

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com SP385E_100_030811 TyPICAL OPERATING CIRCUIT 10 9 R INR OUT2 13 14 R INR OUT1 11 8 T OUT2 12 15 T OUT1 400kΩ 400kΩ TTL/CMOS INPUTS RS232 OUTPUTS C V +0.1µF 6.3V +5V INPUT TTL/CMOS OUTPUTS RS232 INPUTS 5kΩ 16V 5kΩ C ++0.1µF 16V +5V to +10V Voltage Doubler 10µF SP385E

18 ON/OFF

+10V to -10V Voltage Inverter V- T IN2 T IN1 GND 1.0µF 1.0µF 12 9 R INR OUT2 15 16 R INR OUT1 13 8 T OUT2 14 17 T OUT1 400kΩ 400kΩ TTL/CMOS INPUTS RS232 OUTPUTS C V +0.1µF 6.3V +5V INPUT TTL/CMOS OUTPUTS RS232 INPUTS 5kΩ 16V 5kΩ C ++0.1µF 16V +5V to +10V Voltage Doubler 10µF SP385E

20 ON/OFF

+10V to -10V Voltage Inverter V- T IN2 T IN1 GND 1.0µF 1.0µF

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com SP385E_100_030811 The Exar SP385E is a +3V or +5V EIA-232/ EIA-562 line transceiver. It is a pin-for-pin alternative for the SP310A and will operate in the same socket with capacitors ranging from 0.1µF to 10µF, either polarized or non–polar- ized, in +3V supplies. The SP385E offers the same features such as 120kbps guaranteed transmission rate, increased drive current for longer and more flexible cable configurations, low power dissipation and overall ruggedized construction for commercial and industrial environments. The SP385E also includes a shutdown feature that tri-states the drivers and the receivers. The SP385E includes a charge pump voltage converter which allows it to operate from a single +3.3V or +5V supply. These convert- ers double the VCC voltage input in order to generate the EIA-232 or EIA-562 output levels. For +5V operation, the SP385E driver out- puts adhere to all EIA-232D and CCITT V.28 specifications. While at +3.3V operation, the outputs adhere to EIA-562 specifications. Due to Exar's efficient charge pump design, the charge pump levels and the driver outputs are less noisy than other 3V EIA-232 transceivers. The SP385E has a single control line which simultaneously shuts down the internal DC/DC converter and puts all transmitter and receiver outputs into a high impedance state. The SP385E is available in 18-pin plastic SOIC and 20-pin plastic SSOP packages for operation over commercial and industrial temperature ranges. Please consult the factory for surface-mount packaged parts supplied on tape-on-reel as well as parts screened to MIL- M-38510. The SP385E is ideal for +3.3V battery ap- plications requiring low power operation. The charge pump strength allows the drivers to provide ±4.0V signals, plenty for typical EIA- 232 applications since the EIA-232 receivers have input sensitivity levels of less than ±3V. THEORy OF OPERATION The SP385E device is made up of three basic circuit blocks — 1) a driver/transmitter, 2) a receiver and 3) a charge pump. Driver/Transmitter The drivers are inverting transmitters, which accept TTL or CMOS inputs and output the RS-232 signals with an inverted sense relative to the input logic levels. Typically the RS-232 output voltage swing is ±9V for 5V supply and ±4.2V for 3.3V supply. Even under worst case loading conditions of 3kΩ and 2500pF, the output is guaranteed to be ±5V for a 5V supply and ±3.7V for a 3.3V supply which adheres to EIA-232 and EIA-562 specifications, respec- tively. The transmitter outputs are protected against infinite short-circuits to ground without degradation in reliability. The instantaneous slew rate of the transmit- ter output is internally limited to a maximum of 30V/µs in order to meet the standards [EIA 232-D 2.1.7, Paragraph (5)]. However, the transition region slew rate of these enhanced products is typically 10V/µs. The smooth tran- sition of the loaded output from VOL to VOH clearly meets the monotonicity requirements of the standard [EIA 232-D 2.1.7, Paragraphs (1) & (2)]. Receivers The receivers convert RS-232 input signals to inverted TTL signals. Since the input is usually from a transmission line, where long cable lengths and system interference can degrade the signal, the inputs have a typical hyster- esis margin of 500mV. This ensures that the receiver is virtually immune to noisy transmis- sion lines. The input thresholds are 0.8V minimum and 2.4V maximum, again well within the ±3V RS- 232 requirements. The receiver inputs are also protected against voltages up to ±15V. Should an input be left unconnected, a 5kΩ pull-down resistor to ground will commit the output of the receiver to a high state. In actual system applications, it is quite pos- sible for signals to be applied to the receiver inputs before power is applied to the receiver circuitry. This occurs for example when a PC user attempts to print only to realize the printer wasn’t turned on. In this case an RS-232 signal from the PC will appear on the receiver input at the printer. When the printer power is turned on, the receiver will operate normally. All of these enhanced devices are fully protected.

shifting. A description of each phase follows. tive side is connected to ground. +5V, the voltage potential across C2 is l0V. across C2 to C4, the VDD storage capacitor. Figure 1. Charge Pump Waveform

MIL-STD-883, Method 3015.7 for ESD testing. energy and discharge it to an integrated circuit. Figure 6. ESD Test Circuit for Human Body Model

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com SP385E_100_030811 PACKAGE: 20 PIN SSOP

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com SP385E_100_030811 PACKAGE: 18 PIN WSOIC

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com SP385E_100_030811

ORDERING INFORMATION

For Tape and Reel option add "/TR", Example: SP385EET-L/TR. Part Number Temp. Range Package SP385ECA-L 0C to +70C 20 Pin SSOP SP385ECA-L/TR 0C to +70C 20 Pin SSOP SP385ECT-L 0C to +70C 18 Pin WSOIC SP385ECT-L/TR 0C to +70C 18 Pin WSOIC SP385EEA-L -40C to +85C 20 Pin SSOP SP385EEA-L/TR -40C to +85C 20 Pin SSOP SP385EET-L -40C to +85C 18 Pin WSOIC SP385EET-L/TR -40C to +85C 18 Pin WSOIC

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com SP385E_100_030811

REVISION HISTORY

EXAR Corporation reserves the right to make changes to any products contained in this publication in order to improve design, performance or reli- ability. EXAR Corporation assumes no representation that the circuits are free of patent infringement. Charts and schedules contained herein are only for illustration purposes and may vary depending upon a user's specific application. While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized ; (b) the user assumes all such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances. Copyright 2011 EXAR Corporation Datasheet March 2011 For technical support please email Exar's Serial Technical Support group at : serialtechsupport@exar.com Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited. DATE REVISION DESCRIPTION 03/08/05 -- Legacy Sipex Datasheet 03/08/11 1.0.0 Convert to Exar Format, update ordering information and change ESD specification to IEC61000-4-2

Click to View Pricing, Inventory, Delivery & Lifecycle Information: Exar: SP385ECA-L SP385EEA-L SP385ECA-L/TR SP385EET-L/TR SP385ECT-L/TR SP385ECT-L SP385EET-L SP385EEA-L/TR