ADM207ARSZ

Overview

The ADM207ARSZ is a CMOS RS-232 line transceiver from Analog Devices, designed for EIA-232-E and V.28 communication interfaces. It integrates five drivers and three receivers within a 24-lead SSOP package. The device operates on a single +5 V supply (4.5 V to 5.5 V) and utilizes internal charge pumps to generate the required ±10 V levels. It supports data rates up to 120 kB/s with a typical power consumption of 15 mW. The component lacks shutdown or enable control pins.

Feature Summary

• Integrates two internal charge pump voltage converters to generate ±10 V supplies from a single 5 V input.
• Features Schmitt-trigger receiver inputs with hysteresis 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 protection and accepts ±30 V receiver input levels.

Applications

• Computers
• Peripherals
• Modems
• Printers
• Instruments

Procurement Notes

Verify the specific ordering suffix 'ARSZ' corresponds to the 24-lead SSOP package and RoHS compliance status as listed in the manufacturer's ordering guide. Confirm that the absence of shutdown functionality aligns with the system design requirements, as this variant does not include SD or EN control pins.

Selection Notes

Select the ADM207ARSZ when five independent transmit channels are required alongside three receive channels. This part is suitable for applications where low power shutdown is unnecessary. Ensure the design accommodates four external capacitors for the charge pump circuitry and verify that the 120 kB/s data rate meets the interface speed requirements.

Part Context

This component belongs to the ADM2xx family of RS-232 drivers and receivers. Unlike other members such as the ADM206 or ADM211, the ADM207 does not feature a low power shutdown mode or an enable pin. It shares the same core architecture and capacitor requirements but offers a different driver-to-receiver ratio optimized for specific multi-port communication needs.

Replacement Considerations

The ADM207EARSZ serves as a higher-speed alternative within the same package, supporting 230 kB/s data rates and including shutdown functionality. For direct functional substitution without shutdown features, consider the ADM208, which provides four drivers and four receivers instead of five drivers and three receivers.