ADM207ARZ

Overview

The ADM207ARZ is a CMOS RS-232 transceiver from the Analog Devices ADM2xx family, designed for EIA-232-E and V.28 interfaces using a single +5 V supply. It integrates five drivers and three receivers with on-board dc-to-dc converters that generate ±10 V levels from external capacitors. The device supports data rates up to 120 kB/s and operates within a temperature range of -40°C to +85°C. Key electrical parameters include a typical power supply current of 13 mA, an output voltage swing of ±9 V under load, and receiver input protection up to ±30 V. It lacks shutdown or enable control pins.

Feature Summary

• Integrates two internal charge pump voltage converters to generate required RS-232 voltages from a single 5 V source.
• Features Schmitt-trigger inputs on receivers to ensure error-free reception in noisy environments.
• Includes internal pull-up resistors on transmitter inputs and pull-down resistors on receiver inputs.
• Provides latch-up free performance and high noise immunity.

Applications

• Computers
• Peripherals
• Modems
• Printers
• Instruments

Procurement Notes

Verify the specific package option against the ordering guide, as the 'ARZ' suffix indicates a 24-lead SOIC_W (RW-24) package. Confirm RoHS compliance status directly with the manufacturer documentation. Ensure the design accommodates the four required external capacitors for the charge pump circuitry. Check for availability of the standard tube packaging format.

Selection Notes

Select this component when five driver channels and three receiver channels are required without low-power shutdown functionality. Compare against the ADM206 if only four drivers are needed, or the ADM211/ADM213 if shutdown modes and enable controls are necessary. Verify that the 120 kB/s data rate meets system requirements. Ensure the PCB layout allows space for the four external capacitors required by the integrated charge pumps.

Part Context

The ADM207ARZ belongs to the ADM2xx series of line drivers and receivers intended for applications where ±12 V supplies are unavailable. This family utilizes CMOS technology to minimize power dissipation while meeting EIA-232-E specifications. The ADM207 specifically provides a 5-driver, 3-receiver configuration, distinguishing it from the 4x3 ADM206 and the 4x4 ADM208 within the same pin-compatible family.

Replacement Considerations

Public confirmed substitutes include the MAX207CDB, MAX207CDBR, and MAX207IDBR from Texas Instruments. These parts offer parameter equivalence and pin compatibility. Verify that the replacement maintains the 5-driver, 3-receiver topology and compatible operating voltage ranges.