SN75LPE185 Selling Leads, Price trend, SN75LPE185 DataSheet download, circuit diagram from SeekIC.com

Features: ` Single-Chip RS-232 Interface for IBM™ PC™ Compatible Serial Port` Designed to Transmit and Receive 4-s Pulses(Equivalent to 256 kbit/s)` Standby Power Is Less Than 750 W Maximum` Wide Supply-Voltage Range . . . 4.75 V to 15 V` Driver Output Slew Rates Are Internally Control...

Product Details

Description

Features:

` Single-Chip RS-232 Interface for IBM™ PC™
    Compatible Serial Port
` Designed to Transmit and Receive 4-s Pulses
    (Equivalent to 256 kbit/s)
` Standby Power Is Less Than 750 W Maximum
` Wide Supply-Voltage Range . . . 4.75 V to 15 V
` Driver Output Slew Rates Are Internally
    Controlled to 30-V/s Maximum
` RS-232 Bus-Pin ESD Protection Exceeds:
    15 kV, Human-Body Model
    8-kV IEC1000-4-2, Contact
    15-kV IEC1000-4-2, Air Gap
` Receiver Input Hysteresis . . . 1000 mV Typical
` Three Drivers and Five Receivers Meet or
    Exceed the Requirements of TIA/EIA-232-F and
    ITU v.28 Standards
` Complements the SN75LP196
` One Receiver Remains Active During WAKE-UP
    Mode (100 mA Maximum)
` Matches the Flow-Through Pinout of the
    Industry-Standard SN75185, SN75C185, and
    SN75LP185, With Additional Control Pins
` Package Options Include Plastic Shrink
    Small-Outline (DB), Small-Outline (DW), Thin
    Shrink Small-Outline (PW), and Standard
    Plastic (NT) DIPs

Pinout

Connection Diagram

Specifications

Positive supply voltage range:V_CC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 7 V
                                             V_DD (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 15 V
Negative supply voltage range, V_SS (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 15 V
Receiver input voltage range, V_I(RA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 V to 30 V
Driver input voltage range, V_I(DA, EN, MODE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to VCC + 0.4 V
Receiver output voltage range, V_O (RY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 6 V
Driver output voltage range, V_O (DY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 V to 15 V
Electrostatic discharge, bus pins: Machine model (see Note 2) . . . . . . . . . . . . . . . . . .. . . . . . . . Class 3, 500 V
                                                    Human-body model (see Note 2) . . . . . . . . . . . . . . . . . . . . . . Class 3, 15 kV
                                                  IEC1000-4-2: contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class 3, 8 kV
                                                  IEC1000-4-2: airgap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class 3, 15 kV
Electrostatic discharge, all pins: Human-body model (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . Class 3, 5 kV
                                                    Machine model (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . Class 3, 200 V
Package thermal impedance, _JA (see Note 3): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104°C/W
                                                                      DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81°C/W
                                                                      NT package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W
                                                                       PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120°C/W
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltage values are with respect to network ground terminal unless otherwise noted.
2. Per MIL-STD-883 Method 3015.7
3. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.

Description

The SN75LPE185 is a low-power bipolar device containing three drivers and five receivers, with 15-kV ESD protection on the bus pins, with respect to each other. Bus pins are defined as those pins that tie directly to the serial-port connector, including GND. The pinout matches the flow-through design of the industry-standard SN75185, SN75C185, and SN75LP185, with the addition of four pins for control signals. The flow-through pinout of the device allows easy interconnection of the UART and serial-port connector of the IBM PC compatibles. The SN75LPE185 provides a rugged, low-cost solution for this function with the combination of bipolar processing and 15-kV ESD protection.

The SN75LPE185 has an internal slew-rate control to provide a maximum rate of change in the output signal of 30 V/ms. The driver output swing is clamped at ±6 V to enable the higher data rates associated with this device and reduce EMI emissions. Although the driver outputs are clamped, the outputs can handle voltages up to ±15 V without damage.

The device SN75LPE185 has flexible control options for power management when the serial port is inactive. A common disable for all of the drivers and receivers is provided with the active-low enable (EN) input. The mode control (MODE) input selects between the STANDBY and WAKE-UP modes. With a low-level input on the MODE pin and a high-level input on the EN pin, one receiver remains active while the remaining drivers and receivers are disabled to implement the WAKE-UP mode. With a high-level input on both the MODE and EN pins, all drivers and receivers are disabled to implement the STANDBY mode. The outputs of the drivers are in a high-impedance state when the device is powered off. To ensure the outputs of the receivers are in a known
output level (as listed in the Application Information section of this data sheet) when the device SN75LPE185 is powered off, in STANDBY, or WAKE-UP mode, external pullup/pulldown circuitry must be provided. All the logic inputs accept 3.3-V or 5-V input signals.

The SN75LPE185 complies with the requirements of TIA/EIA-232-F and ITU v.28 standards. These standards are for data interchange between a host computer and peripheral at signaling rates up to 20 kbit/s. The switching speeds of the device support rates up to 256 kbit/s.

The SN75LPE185 is characterized for operation from 0°C to 70°C.

SN75LPE185

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