MAX3232CDR

Overview

The MAX3232CDR is a dual RS-232 transceiver in a 16-pin SOIC package, operating from a single 3-V to 5.5-V supply. It integrates two drivers and two receivers with a dual charge-pump circuit requiring four external capacitors. The device supports data rates up to 250 kbit/s and features ±15-kV ESD protection on serial-port terminals. It meets TIA/EIA-232-F standards and accepts 5-V logic inputs when powered by a 3.3-V supply.

Feature Summary

• Integrates dual charge-pump circuitry for single-supply operation
• Provides ±15-kV ESD protection on all RS-232 terminal connections
• Accepts 5-V logic input levels while operating from a 3.3-V supply
• Includes short-circuit protection on driver outputs

Applications

• Industrial PCs
• Wired networking equipment
• Data center and enterprise networking systems
• Battery-powered portable devices such as PDAs and laptops

Procurement Notes

Verify the specific ordering suffix against the current TI Package Option Addendum to confirm active production status and lead finish specifications. Ensure the selected variant matches the required operating temperature range and package dimensions for your PCB layout constraints before finalizing procurement.

Selection Notes

Select this component for applications requiring low power consumption and robust ESD protection in compact designs. Verify that the external capacitor values align with the chosen VCC level to ensure optimal performance. Consider alternative high-speed variants if signaling rates exceeding 250 kbit/s are necessary for the system design.

Part Context

This part belongs to the MAX3232 family of multichannel RS-232 line drivers and receivers. The 'C' designation indicates a commercial temperature range (0°C to 70°C), while the 'D' suffix specifies the 16-pin SOIC package. Other variants exist for industrial temperatures and different package types within the same functional family.

Replacement Considerations

SN65C3232 and SN75C3232 are documented as alternative high-speed terminal-compatible devices offering 1 Mbit/s operation.