MAX209CNG

Drivers, Receivers, Transceivers Overview

The MAX209CNG is a +5V-powered, multichannel RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It features two drivers and five receivers with an integrated charge pump that eliminates the need for external bipolar supplies. Designed for single-supply operation from +9V to +13.2V at V+, it supports data rates up to 120kbps. The device operates within a temperature range of 0°C to +70°C and utilizes a 24-pin Narrow Plastic DIP package.

Drivers, Receivers, Transceivers Feature Summary

• Integrated charge pump circuitry enables single +5V supply operation without requiring external bipolar voltage sources.
• Supports high-speed data transmission with maximum data rates exceeding 120kbps under standard loading conditions.
• Includes five receivers capable of monitoring external activity while maintaining minimal power consumption in shutdown mode.

Drivers, Receivers, Transceivers Applications

• Battery-powered equipment requiring low-power serial communication
• Handheld devices with limited board space constraints
• Portable diagnostics equipment needing reliable RS-232 interfaces

Drivers, Receivers, Transceivers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for obsolescence notices prior to procurement. Ensure packaging integrity matches specified requirements for the 24-pin narrow DIP format.

Drivers, Receivers, Transceivers Selection Notes

Select this component when applications require multiple receiver inputs alongside driver outputs on a single chip. Consider the specific V+ supply voltage range of +9V to +13.2V during system design. Evaluate thermal dissipation limits based on the chosen operating environment and load capacitance.

Drivers, Receivers, Transceivers Part Context

This part belongs to the MAX200-MAX209 family of RS-232 transceivers designed for simplified interface implementation. The series offers various configurations of drivers and receivers to suit different communication needs while maintaining compatibility with EIA/TIA-232E standards.

Drivers, Receivers, Transceivers Replacement Considerations

MAX209CPE

Drivers, Receivers, Transceivers FAQ

What is the function of the V+ pin on the MAX209?

The V+ pin serves as the positive output of the internal voltage doubler, typically ranging from +9V to +13.2V, which powers the charge pump circuitry for RS-232 signal generation.

How does the MAX209 handle unused driver inputs?

Unused driver inputs can be left unconnected because the device includes internal 400kΩ pullup resistors to VCC, which force the outputs low to minimize power consumption.

Can the MAX209 operate without external capacitors?

No, the MAX209 requires four external 0.1µF capacitors to support its integrated charge pump circuitry for generating the necessary ±10V levels from a single +5V supply.