ADM232LARZ

Overview

The ADM232LARZ is a CMOS RS-232 transceiver from the Analog Devices ADM2xxL family, designed for EIA-232-E and V.28 communications interfaces using a single 5 V power supply. It integrates two drivers and two receivers with on-board dc-to-dc converters that utilize small 1 µF capacitors to generate ±10 V levels. The device operates within an industrial temperature range of -40°C to +85°C, supports data rates up to 120 kbps, and features Schmitt trigger inputs for noise immunity. Packaged in a 16-pin SOIC (R-16) format, it provides full duplex communication without shutdown or enable control pins.

Feature Summary

• Integrates dual charge pump voltage converters to operate from a single 5 V supply
• Features Schmitt trigger receiver inputs for enhanced noise immunity
• Includes internal pull-up and pull-down resistors on logic inputs

Applications

• Computers
• Peripherals
• Modems
• Printers
• Instruments

Procurement Notes

Verify the specific suffix 'ARZ' corresponds to the industrial temperature grade (-40°C to +85°C) and RoHS-compliant packaging. Confirm the package type matches the 16-lead Standard Small Outline Package Wide Body (R-16). Ensure the design utilizes the required four external 1 µF capacitors for the charge pumps as specified in the typical operating circuit.

Selection Notes

Select this component when a single 5 V supply is available and no shutdown functionality is required. It serves as a direct upgrade to the legacy AD2xx family with lower power consumption and faster slew rates. Verify that the application does not require bus sharing capabilities, as this part lacks the Enable pin found in the ADM236L and ADM241L variants.

Part Context

This device belongs to the ADM2xxL family of line drivers/receivers, which are enhanced upgrades to the AD2xx series. The family includes variants like the ADM231L, ADM233L, and ADM236L, offering different combinations of drivers, receivers, and power management features such as shutdown modes or space-saving internal capacitors.

Replacement Considerations

Public confirmed substitute part numbers: ADM232ARNZ.