MAX222MJN/883B

Overview

The MAX222MJN/883B is a military-grade RS-232 line transceiver from the MAX220–MAX249 family, designed for EIA/TIA-232E and V.28/V.24 interfaces. It operates on a single +5V supply by utilizing an integrated charge pump to generate ±10V internally, eliminating the need for external bipolar supplies. The device features two drivers and two receivers with TTL/CMOS-compatible inputs and outputs. Key electrical parameters include a data rate of up to 120 kbps, receiver input hysteresis of 0.5V typical, and a shutdown mode current of 10µA maximum at +25°C. It supports continuous short-circuit protection on transmitter outputs.

Feature Summary

• Integrated dual charge-pump circuitry generates internal ±10V levels from a single +5V supply
• Provides two RS-232 drivers and two RS-232 receivers for bidirectional communication
• Includes a low-power shutdown mode to minimize energy consumption during idle periods

Applications

• Interface translation between TTL/CMOS logic and RS-232 serial ports
• Multidrop RS-232 network connections in industrial environments
• Portable diagnostic equipment requiring robust serial communication

Procurement Notes

Verify that the ordering suffix /883B corresponds to the specific military qualification requirements defined in the manufacturer's datasheet. Confirm package type and pinout compatibility with existing designs before procurement. Ensure environmental specifications align with intended operational conditions.

Selection Notes

Select this component when a single-supply RS-232 interface is required without external voltage inversion components. Consider the 120 kbps data rate limit and the specific shutdown control logic. Verify that the thermal dissipation capabilities of the chosen package meet the system's power budget under maximum load conditions.

Part Context

This part belongs to the MAX220–MAX249 family of +5V-powered multichannel RS-232 drivers and receivers. The family offers various channel configurations and package options tailored for different space and performance constraints within serial communication systems.

Replacement Considerations

Cross-reference with other members of the MAX220–MAX249 family for alternative channel counts or package styles. Verify functional equivalence regarding shutdown polarity and control pin configurations if substituting with similar RS-232 transceivers.