MAX244EQH+TD

Overview

The MAX244EQH+T is a +5V-powered, multichannel RS-232 transceiver from the MAX220–MAX249 family. It integrates eight drivers and ten receivers for full-duplex communication at data rates up to 120 kbps. The device operates on a single +5V supply by utilizing internal charge-pump circuitry to generate the required ±10V levels, eliminating the need for external bipolar supplies. It is housed in a 44-pin PLCC package and supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates eight drivers and ten receivers within a single monolithic IC
• Enables single-supply operation through built-in dual charge-pump voltage converters
• Supports full-duplex communication with standard EIA/TIA-232E signaling

Applications

• Interface translation between TTL/CMOS logic and RS-232 standards
• Multidrop RS-232 network implementations
• Portable diagnostics equipment requiring compact form factors

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm the exact packaging configuration. Confirm that the component meets RoHS compliance requirements for your target assembly process. Ensure the supplier provides valid traceability records for the Analog Devices / Maxim Integrated manufacturing lot.

Selection Notes

Select this component when high channel density is required within a limited board area. The integrated charge pump simplifies power design by removing the requirement for negative voltage rails. Verify that the 120 kbps data rate aligns with system timing constraints and that the PLCC footprint matches the PCB layout.

Part Context

This part belongs to the MAX220–MAX249 series of line drivers and receivers designed for applications where ±12V supplies are unavailable. The MAX244 variant specifically addresses systems needing extensive serial connectivity without expanding the bill of materials or increasing power consumption significantly.

Replacement Considerations

Cross-reference with other members of the MAX220–MAX249 family, such as the MAX243 or MAX246, if different control pin configurations or driver counts are acceptable. Verify that any substitute maintains the same 44-pin PLCC package dimensions and thermal characteristics.