ADM202JRN

Overview

The ADM202JRN is a high-speed, 5 V CMOS RS-232 driver/receiver manufactured by Analog Devices Inc. It features two drivers and two receivers operating at transmission rates up to 120 kB. The device utilizes an on-chip charge pump to generate ±10 V output swings from a single 5 V supply using small 0.1 µF capacitors. It meets TIA/EIA-232-E and V.28 specifications with low power consumption of 2.5 mA typical current. The component includes overvoltage protection allowing receiver inputs to withstand ±30 V and provides ESD protection exceeding 2 kV. It is housed in a 16-lead Standard Small Outline Package (R-16) and operates within a commercial temperature range of 0°C to 70°C.

Feature Summary

• Integrated charge pump generates RS-232 voltage levels using minimal external capacitance
• BiCMOS construction ensures low power dissipation and latch-up immunity
• Receiver inputs feature Schmitt trigger action for noise immunity and error-free reception
• Internal pull-up and pull-down resistors manage unused input states automatically

Applications

• Computers
• Peripherals
• Modems
• Printers
• Instruments

Procurement Notes

Verify the specific package variant R-16 against design requirements. Confirm RoHS compliance status as standard J suffix parts may differ from Z suffix versions. Check manufacturing date codes for availability. Ensure ordering documentation matches the exact model number including any reel or tube packaging indicators if applicable.

Selection Notes

Select this component for applications requiring full RS-232 compliance with minimal external components. The integrated charge pump eliminates the need for larger capacitors found in older transceivers. Verify that the 120 kB baud rate meets system speed requirements. Ensure the 5 V logic interface matches the host microcontroller or processor voltage levels.

Part Context

The ADM202 belongs to the ADM202 series of high-speed RS-232 transceivers. It is part of Analog Devices' portfolio of interface ICs designed for reliable serial communication. The JRN designation specifically indicates the narrow body SOIC package option within the commercial temperature grade lineup.

Replacement Considerations

ADM202JRNZ

FAQ

What is the maximum receiver input voltage the ADM202 can withstand?

The receiver inputs are protected against continuous voltages up to ±30 V.

Does the ADM202 require external slew limiting capacitors?

No, the internal circuitry limits the slew rate to less than 30 V/µs without external components.

How does the device handle unused TTL/CMOS inputs?

An internal 400 kΩ pull-up resistor pulls unused inputs high, forcing the corresponding outputs into a low state.