DS232A

Drivers, Receivers, Transceivers Overview

The DS232A is a dual RS-232 driver and receiver transceiver designed for single +5V power supply operation. It utilizes on-board charge pumps to generate ±10V levels from the +5V input, eliminating the need for external ±12V supplies. The device supports data rates up to 350 kbits/sec and operates within a voltage range of 4.5V to 5.5V. It features two drivers and two receivers with TTL/CMOS compatible inputs and outputs. Standard operating temperature ranges from 0°C to 70°C, while an industrial variant (-N suffix) extends this to -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Generates RS-232 voltage levels internally using on-board charge pumps from a single +5V supply
• Fully compliant with EIA-232E and V.28/V.24 standards
• Includes internal pullup resistors allowing unused driver inputs to remain unconnected
• Provides high noise immunity through receiver hysteresis

Drivers, Receivers, Transceivers Applications

• Serial communication interfaces in industrial control systems
• Data acquisition equipment requiring RS-232 connectivity
• Embedded systems utilizing single-supply microcontrollers
• Test and measurement instruments

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package type required for the design, as the DS232A is available in multiple configurations including 16-pin DIP, SOIC (150-mil and 300-mil), and 20-pin TSSOP. Confirm if the industrial temperature range is necessary by checking for the '-N' suffix in the part number. Ensure that the ordering information matches the exact pinout and thermal requirements of the target application before finalizing procurement.

Drivers, Receivers, Transceivers Selection Notes

Select the DS232A when a single +5V supply is available and external negative voltage generation is undesirable. Choose the industrial version (-N suffix) if operation below 0°C or above 70°C is expected. Consider the physical footprint constraints when choosing between the standard 16-pin packages and the height-restricted 20-pin TSSOP option. Verify that the load capacitance does not exceed the specified limits for the desired data rate.

Drivers, Receivers, Transceivers Part Context

The DS232A belongs to the Maxim Integrated RS-232 transceiver family, which includes compatible parts like the MAX232A and LT1181A. These devices share similar functional architectures but may differ in packaging, temperature ratings, or specific electrical characteristics. The DS232A specifically offers flexibility through various package options to suit different board space and height restrictions.

Drivers, Receivers, Transceivers Replacement Considerations

The datasheet explicitly lists compatibility with the LT1181A and MAX232A. Designers should verify pin-to-pin compatibility and ensure that any substitute component meets the same voltage swing and data rate specifications under identical load conditions.