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Product Detailed Parameters
- Description：RS-232 TRANSMITTER/RECIEVERS, +/
- Series：*
- Mfr：Harris Corporation
- Package：Bulk
- Features：-
- Number of Channels：-
- FIFO's：-
- Protocol：-
- Data Rate (Max)：-
- Voltage - Supply：-
- With Auto Flow Control：-
- With IrDA Encoder/Decoder：-
- With False Start Bit Detection：-
- With Modem Control：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The ISL83385CA is a low-power RS-232 transceiver manufactured by Intersil, designed for portable and battery-operated applications. It operates within a single +3V to +5.5V supply range and supports data rates up to 250kbps. The device integrates on-chip voltage converters requiring only four external 0.1µF capacitors. Key electrical characteristics include ±15kV ESD protection on I/O pins per IEC61000 standards, a maximum supply current of 0.3mA during operation, and less than 1µA in powerdown mode. It features receiver hysteresis for noise immunity and meets EIA/TIA-232 specifications at 3V.
Feature Summary
- Ultra-low power consumption with manual shutdown capability reducing standby current to 1µA
- Integrated charge pumps eliminating the need for external inductors or transformers
- Robust electrostatic discharge protection rated at ±15kV on RS-232 I/O pins
- Receiver remains active during powerdown state to detect incoming signals
Applications
- Personal Digital Assistants (PDAs) and Palmtops
- Notebook and laptop computers
- Battery-powered handheld instruments
- Mixed 3.3V and 5.0V system interfaces
Procurement Notes
Verify the manufacturer designation carefully, as Intersil was acquired by Renesas Electronics. Confirm the specific suffix 'CA' corresponds to the required package type and temperature grade against the official datasheet. Ensure compatibility with existing PCB footprints when replacing legacy components from other vendors.
Selection Notes
Select this component for designs prioritizing minimal standby current and board space savings due to small capacitor requirements. It serves as a pin-compatible upgrade for older MAX3385E designs. Verify that the application environment does not exceed the ±15kV ESD tolerance limits specified for the I/O pins.
Part Context
This part belongs to the ISL8338xE family of RS-232 transceivers characterized by low quiescent current and high ESD immunity. The family shares common architectural features such as internal charge pumps and shutdown controls, differing primarily in package options and specific thermal ratings defined by the suffix codes.
Replacement Considerations
Direct pin-compatible replacements include the MAX3385E from Maxim Integrated. When substituting, verify that the alternative device maintains the same 3V to 5.5V operating voltage range and 250kbps data rate guarantee under worst-case load conditions.
