MAX3317ECUP

Overview

The MAX3317ECUP+ is a full-duplex RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 2.25V to 3V and supports data rates up to 460kbps. The device integrates two drivers and two receivers in a single package. It utilizes a proprietary low-dropout transmitter output stage and requires only four 0.1µF capacitors for dual-charge pump operation. The component is housed in a 20-TSSOP surface-mount package with a width of 4.40mm. It is rated for an operating temperature range of 0°C to 70°C.

Feature Summary

• Proprietary low-dropout transmitter output stage enables RS-232-compatible performance from +2.25V to +3.0V
• Requires only four 0.1µF capacitors for dual-charge pump operation
• Guaranteed operation at data rates up to 460kbps

Applications

• Portable battery-powered equipment requiring RS-232 communication
• Handheld terminals and mobile computing devices
• Industrial control systems with low-voltage interfaces

Procurement Notes

Verify the exact suffix against official documentation, as variations such as EEUP or CUP indicate different electrical or environmental specifications. Confirm RoHS compliance status and lead times through authorized distributors. Check for end-of-life notices, as some variants may be discontinued. Ensure the package type matches the PCB footprint requirements before ordering.

Selection Notes

Select this component when a low-voltage (2.25V–3V) RS-232 interface is required for portable applications. Compare driver/receiver counts and data rate limits against system needs. Verify thermal performance within the specified operating temperature range. Consider capacitor count and charge pump requirements for board space optimization.

Part Context

The MAX3317 belongs to the MAX3316–MAX3319 family of 2.5V, 1µA, 460kbps RS-232-compatible transceivers. These devices share similar architectural features, including low-dropout outputs and minimal external capacitance requirements. The family targets applications where power consumption and component count are critical constraints.

Replacement Considerations

Public confirmed substitute part numbers: MAX3317EEUP+, MAX3317CUP.