DS75176BMX Electronic IC Chips Multipoint RS-485/RS-422 Transceivers
electronic integrated circuit
,linear integrated circuits
DS75176B/DS75176BT Multipoint RS-485/RS-422 Transceivers
FEATURES
• Meets EIA Standard RS485 for Multipoint Bus Transmission and is Compatible with RS-422.
• Small Outline (SOIC) Package Option Available for Minimum Board Space.
• 22 ns Driver Propagation Delays.
• Single +5V Supply.
• −7V to +12V Bus Common Mode Range Permits ±7V Ground Difference Between Devices on the Bus.
• Thermal Shutdown Protection.
• High Impedance to Bus with Driver in TRI-STATE or with Power Off, Over the Entire Common Mode Range Allows the Unused Devices on the Bus to be Powered Down.
• Pin Out Compatible with DS3695/A and SN75176A/B.
• Combined Impedance of a Driver Output and Receiver Input is Less Than One RS485 Unit Load, Allowing up to 32 Transceivers on the Bus.
• 70 mV Typical Receiver Hysteresis.
DESCRIPTION
The DS75176B is a high speed differential TRI-STATE®bus/line transceiver designed to meet the requirements of EIA standard RS485 with extended common mode range (+12V to −7V), for multipoint data transmission. In addition, it is compatible with RS-422.
The driver and receiver outputs feature TRI-STATE capability, for the driver outputs over the entire common mode range of +12V to −7V. Bus contention or fault situations that cause excessive power dissipation within the device are handled by a thermal shutdown circuit, which forces the driver outputs into the high impedance state.
DC specifications are guaranteed over the 0 to 70°C temperature and 4.75V to 5.25V supply voltage range.
Connection and Logic Diagram
Absolute Maximum Ratings (1)(2)
| Supply Voltage, VCC | 7V | |
| Control Input Voltages | 7V | |
| Driver Input Voltage | 7V | |
| Driver Output Voltages | +15V/ −10V | |
| Receiver Input Voltages (DS75176B) | +15V/ −10V | |
| Receiver Output Voltage | 5.5V | |
| Continuous Power Dissipation @ 25°C | for SOIC Package | 675 mW (3) |
| for PDIP Package | 900 mW (4) | |
| Storage Temperature Range | −65°C to +150°C | |
| Lead Temperature (Soldering, 4 seconds) | 260°C | |
| ESD Rating (HBM) | 500V | |
(1) “Absolute Maximum Ratings” are those beyond which the safety of the device cannot be verified. They are not meant to imply that the device should be operated at these limits. The tables of “Electrical Characteristics” provide conditions for actual device operation.
(2) If Military/Aerospace specified devices are required, please contact the TI Sales Office/Distributors for availability and specifications.
(3) Derate linearly @ 6.11 mW/°C to 400 mW at 70°C.
(4) Derate linearly at 5.56 mW/°C to 650 mW at 70°C.
Stock Offer (Hot Sell)
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