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1. Description
These Intersil RS-485/RS-422 devices are BiCMOS 3.3V Powered single transceiver, can meet RS-485 and RS at the same time RS-422 balanced communication standard. Not like Competitive equipment, the rated power of this Intersil series is 10% Tolerant power supply (3V to 3.6V). ISL83483IBZ-T utilize drivers with limited slew rate Can reduce EMI and minimize improper reflections Terminated transmission line or unterminated stub Multipoint and multipoint applications. by using ISL83485, ISL83490 or ISL83491, with higher functions Slew rate. Logic inputs (such as DI and DE) accept more than 5.5V, making it compatible with the 5V logic series. The receiver (Rx) input has a "failure protection when open circuit" design, If the Rx input is left floating, a logic high output can be ensured. All The device provides a "single unit load" to the RS-485 bus, A maximum of 32 transceivers are allowed on the network. The driver (Tx) output has short-circuit protection, even for The voltage exceeds the power supply voltage. In addition, On-chip thermal shutdown circuit prohibits Tx output to If the power consumption is too large, please prevent damage. ISL83488, ISL83490, ISL83491 are configured as complete Duplex (separate Rx input and Tx output pins) application. ISL83488 and ISL83490 save space 8 Leaded package for applications that do not require Rx and Tx Output disable function (such as point-to-point and RS-422). Half-duplex configuration (ISL83483, ISL83485) multiplexing Rx input and Tx output provide Rx for the transceiver And Tx disable function is in 8-pin package.
2. Features
1. Operate from a Single +3.3V Supply (10% Tolerance)
2. Interoperable with 5V Logic
3. High Data Rates up to 10Mbps
4. Single Unit Load Allows up to 32 Devices on the Bus
5. Slew Rate Limited Versions for Error Free Data Transmission (ISL83483, ISL83488) up to 250kbps
6. Low Current Shutdown Mode (ISL83483, ISL83485,ISL83491) 15nA
7. -7V to +12V Common Mode Input Voltage Range
8. Three State Rx and Tx Outputs (Except ISL83488,ISL83490)
9. 10ns Propagation Delay, 1ns Skew (ISL83485, ISL83490,ISL83491)
10. Full Duplex and Half Duplex Pinouts
11. Current Limiting and Thermal Shutdown for driver Overload Protection
12. Pb-free available
3. Applications
1. Factory Automation
2. Security Networks
3. Building Environmental Control Systems
4. Industrial/Process Control Networks
5. Level Translators (e.g., RS-232 to RS-422)
6. RS-232 “Extension Cords”
4. Pinouts
5. Small Outline Plastic Packages
