MAX248EQH-D

Overview

The MAX248EQH+D is a +5V-powered, multichannel RS-232 transceiver from the MAX220–MAX249 family. It integrates eight drivers and eight receivers with full-duplex communication capability. The device operates on a single +5V supply by utilizing an internal charge pump to generate ±10V for RS-232 signaling. It supports data rates up to 120 kb/s and features a shutdown mode consuming only 5μW. The component is housed in a PLCC-44 package and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates dual charge-pump DC-DC voltage converters to eliminate the need for external bipolar supplies or discrete capacitors.
• Provides eight independent RS-232 drivers and receivers for high-density serial communication interfaces.
• Includes dedicated control inputs to enable selective transmitter and receiver activation for power management.

Applications

• Multidrop RS-232 networks
• Portable diagnostics equipment
• Interface translation

Procurement Notes

Verify that the specific ordering suffix matches the required thermal grade and packaging format. Confirm the presence of the '+' designation indicates compliance with current environmental standards. Ensure the PLCC-44 footprint aligns with the target printed circuit board layout before finalizing procurement orders.

Selection Notes

Select this component when a system requires multiple RS-232 channels without external charge-pump components. Verify that the application environment falls within the specified -40°C to +85°C operational range. Consider the shutdown functionality if low-power standby states are necessary for the design.

Part Context

This part belongs to the MAX220–MAX249 family of line drivers and receivers designed for EIA/TIA-232E and V.28/V.24 communications. The family offers various channel counts and packages to accommodate different space constraints while maintaining single-supply operation capabilities.

Replacement Considerations

The MAX249 serves as a direct functional substitute within the same family, offering identical electrical characteristics but with nine receivers instead of eight. Both devices share the same +5V single-supply architecture and integrated charge pump technology.