ADM234LJNZ

Overview

The ADM234LJNZ is a CMOS RS-232 line driver manufactured by Analog Devices, designed for EIA-232-E and V.28 communications interfaces using a single 5 V power supply. It integrates two internal charge pump voltage converters to generate the required ±10 V levels from the 5 V input. The device features four drivers and no receivers, supporting data rates up to 120 kbps with an output swing of ±9 V. It operates within a commercial temperature range of 0°C to 70°C and utilizes a 16-pin SOIC package.

Feature Summary

• Integrates on-board dc-to-dc converters to operate from a single 5 V supply
• Provides four TTL/CMOS-to-RS-232 drivers for multi-channel communication
• Includes internal pull-up resistors on transmitter inputs to simplify unused pin handling
• Features Schmitt trigger inputs on receivers in compatible family members for noise immunity

Applications

• Computers
• Peripherals
• Modems
• Printers
• Instruments

Procurement Notes

Verify the specific suffix 'JNZ' against the manufacturer's current ordering guide to confirm the package type and temperature grade. Ensure the design accommodates the required external capacitors for the internal charge pumps. Confirm that the absence of receiver outputs aligns with the system architecture requirements.

Selection Notes

Select this component when a system requires multiple RS-232 transmit channels without receiving capabilities. Verify that the 120 kbps data rate meets the application needs. Consider the 16-pin footprint and ensure adequate space for the required external capacitors. Check if the commercial temperature range is sufficient for the operating environment.

Part Context

The ADM234LJNZ belongs to the ADM2xxL family of 5 V-powered CMOS RS-232 drivers and receivers. This family serves as an enhanced upgrade to the AD2xx series, offering lower power consumption and faster slew rates. The L-series designation indicates compatibility with smaller 1 µF capacitors compared to earlier generations.

Replacement Considerations

ADM234ARZ

FAQ

Does the ADM234LJNZ include receiver outputs?

No, the ADM234LJNZ contains four drivers and zero receivers.

What is the maximum data rate supported by this device?

The device supports a data rate of 120 kbps.

How does the device generate RS-232 voltage levels?

It uses two internal charge pump voltage converters to step up the 5 V supply to approximately ±10 V.