ADM3312EARU

Drivers, Receivers, Transceivers Overview

The ADM3312EARU is a single-supply RS-232 transceiver from Analog Devices, operating within a 2.7 V to 3.6 V range. It integrates three drivers and three receivers with a maximum data rate of 460 kb/s. The device features an internal charge pump generating ±7.25 V supplies and supports Green Idle mode for power optimization. It provides ±15 kV ESD protection on RS-232 I/Os per IEC 1000-4-2 standards. The shutdown supply current is typically 20 nA, with one receiver remaining active during shutdown. It is housed in a 24-lead TSSOP package.

Drivers, Receivers, Transceivers Feature Summary

• Green Idle power-saving mode regulates the charge pump oscillator to minimize quiescent current under light load conditions while maintaining instant transmit capability.
• Integrated on-board charge pump eliminates the need for dual external power supplies by generating required positive and negative voltages from a single input.
• High-level electrostatic discharge protection ensures robust operation in harsh electrical environments without requiring special shielding precautions.
• Shutdown facility significantly reduces power consumption while keeping one receiver active to monitor peripheral devices and alert the processor.

Drivers, Receivers, Transceivers Applications

• Mobile phone handsets and data cables
• Laptop and notebook computers
• PDAs and handheld devices

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and tape-and-reel specifications. Confirm that the component meets RoHS compliance requirements for your target market. Ensure the procurement channel provides valid traceability records for quality assurance purposes.

Drivers, Receivers, Transceivers Selection Notes

Select this component when designing portable systems requiring full RS-232 compliance with minimal power consumption. The integrated charge pump simplifies board layout by removing the need for external voltage inversion circuits. Consider the 24-lead TSSOP footprint for space-constrained applications involving PDAs or mobile peripherals.

Drivers, Receivers, Transceivers Part Context

This part belongs to the ADM33xxE family of low-power serial port transceivers designed for battery-operated equipment. It shares architectural similarities with the ADM3311E but offers a reduced pin count suitable for simpler serial interfaces. The family utilizes CMOS technology to achieve low standby currents and high immunity to latch-up.

Drivers, Receivers, Transceivers Replacement Considerations

ADM3312EACPZ: Alternative LFCSP package variant.

Drivers, Receivers, Transceivers FAQ

How many receivers remain active when the ADM3312EARU is in shutdown mode?

One receiver remains active in shutdown mode, allowing the device to monitor the line and alert the processor when communication begins.

What is the typical shutdown supply current for this device?

The typical shutdown supply current is 20 nA, which minimizes power consumption in battery-powered applications.

Does the ADM3312EARU require external dual power supplies?

No, it features an on-board charge pump dc-to-dc converter that generates the necessary positive and negative supplies from a single 2.7 V to 3.6 V input.