MC33493DTB

RF Transmitter Overview

The MC33493DTB is a PLL-tuned UHF transmitter IC manufactured by NXP USA Inc., designed for general data transfer applications. It supports FSK and OOK modulation schemes across frequency bands of 315MHz to 434MHz and 868MHz to 928MHz. The device operates on a supply voltage range of 1.9V to 3.6V, with a typical transmission current of 11.6mA. It delivers an RF output power of -3dBm and supports maximum data rates up to 10kbps. The component is housed in a 14-TSSOP package (4.40mm width) and functions within a temperature range of -40°C to 125°C.

RF Transmitter Feature Summary

• Integrates a Phase-Locked Loop (PLL) tuned oscillator for stable UHF transmission without external crystals.
• Supports Frequency Shift Keying (FSK) and On-Off Keying (OOK) modulation protocols for versatile data encoding.
• Features a low-power architecture suitable for battery-operated devices with minimal transmission current consumption.
• Includes integrated PCB antenna connectivity for simplified surface-mount design.

RF Transmitter Applications

• General wireless data transfer systems
• Remote control and telemetry links
• Low-speed sensor network transmitters

RF Transmitter Procurement Notes

Verify the specific suffix 'DTB' against official NXP documentation to confirm pinout and tape-and-reel specifications. Check component status as listings may indicate end-of-life or obsolescence. Ensure compatibility with required frequency bands and regulatory standards for the target region before integration.

RF Transmitter Selection Notes

Select this component for applications requiring simple, low-cost UHF transmission with moderate range. Consider the 14-TSSOP package size constraints and the -3dBm output power limitations. Evaluate if the 10kbps data rate suffices for the application's throughput requirements compared to higher-speed alternatives.

RF Transmitter Part Context

The MC33493 series belongs to NXP's portfolio of RF transmitters targeting short-range communication needs. This specific part represents a single-chip solution that simplifies circuit design by integrating the transmitter and PLL tuning components, reducing the bill of materials for basic wireless interfaces.

RF Transmitter Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult NXP technical support for direct replacements or cross-reference compatible UHF transmitters with similar pinouts and electrical characteristics.