ADM239LANZ

Overview

The ADM239LANZ is a CMOS RS-232 driver and receiver from the ADM2xxL family, designed for EIA-232-E and V.28 communication interfaces. It operates from a single 5 V supply (VCC) and an external positive supply ranging from 7.5 V to 13.2 V (V+). The device integrates three transmitters and five receivers, utilizing an internal charge pump to generate a negative supply voltage. Key electrical parameters include a data rate of 120 kbps, ±9 V output swing with a 5 V supply, and ±30 V receiver input levels. It features low power shutdown capability with current consumption ≤1 µA.

Feature Summary

• Integrates three drivers and five receivers for comprehensive serial communication support
• Includes internal charge pump circuitry to generate negative supply voltages
• Features low power shutdown mode for battery-operated applications
• Provides high noise immunity through Schmitt trigger inputs with hysteresis

Applications

• Computers
• Peripherals
• Modems
• Printers
• Instruments

Procurement Notes

Verify that the ordering suffix LANZ corresponds to the specific package type and temperature grade required for your design. Confirm compatibility with existing PCB footprints and ensure that the external supply voltage range meets system requirements before procurement.

Selection Notes

Select this component when a combination of multiple transmitter and receiver channels is needed alongside low power shutdown functionality. It is suitable for systems requiring operation from both 5 V and higher voltage rails, offering space savings compared to discrete solutions.

Part Context

The ADM239LANZ belongs to the ADM2xxL enhanced upgrade series, succeeding the AD2xx family. This generation offers lower power consumption, faster slew rates, and the ability to operate with smaller capacitors. It is part of a broader family including variants like the ADM236L and ADM241L which feature different pin counts and control options.

Replacement Considerations

Direct replacements within the same family include other ADM2xxL variants such as the ADM236L or ADM241L, provided pinout and channel count requirements are met. Verify functional equivalence regarding shutdown and enable logic before substitution.