NXP USA Inc. MC44BS374T1AEF

The MC44BS374T1A family integrates a UHF video modulator, sound subcarrier generation, and serial control for PAL/NTSC equipment. It accepts baseband audio/video inputs and produces a modulated RF output suitable for a television receiver channel. NXP identifies the family as no longer manufactured. This catalog record is MC44BS374T1AEF; the available family data sheet does not explicitly decode the complete EF suffix.

• PAL/NTSC baseband audio/video to UHF RF modulation.
• Integrated UHF voltage-controlled oscillator and sound oscillator.
• I²C-compatible control interface, with bus operation specified up to 800 kHz in the family sheet.
• Programmable sound subcarrier selection for common television standards.
• Family documentation specifies UHF channels 21 through 69; validate the selected channel and regional standard in the complete data sheet.

The NXP-hosted Freescale family data sheet identifies a 16-pin SOIC outline. The local catalog lists 16-SOIC with a 0.154-inch (3.90-mm) body. The registered local 16-SOIC JPG is missing, so the reference below is not currently renderable. Confirm the exact T1AEF order code, mechanical drawing, pitch, thermal limits, and pin-1 orientation before layout or substitution.

Assembly checks

• Verify the actual received device marking and suffix.
• Use the manufacturer's numbered pin drawing.
• Keep RF output and oscillator layout consistent with the application guidance.

The family block and pin diagrams include baseband video and audio inputs, RF output, serial-data and serial-clock inputs, oscillator-related pins, supply, and ground. Match every board connection to the 16-pin top-view diagram and selected circuit mode in the full data sheet. Do not derive numbered pins from this summary.

Values describe the documented device family, not an independently verified EF ordering variant. Consult the complete data sheet for limits and test conditions.

Do not assume other MC44BS374 variants or similar RF modulators are drop-in replacements. Compare video standard, sound subcarrier, channel plan, output level, serial-control register settings, pinout, supply rails, package drawing, and lifecycle. No unverified internal alternative product links are provided.

NXP's MC44BS374T1 product page identifies the family and current lifecycle. The NXP-hosted Freescale MC44BS374T1/MC44BS374T1A data sheet provides the functional and package information used here. Its available text does not explicitly list MC44BS374T1AEF, so the complete catalog suffix and any order-specific attributes remain to be reconciled with manufacturer documentation.

Verify device marking, exact order suffix, traceability, package dimensions, and revision against the manufacturer's controlled records. Confirm the installed frequency plan and sound standard by system test. A family data sheet or generic package picture is not proof of exact-suffix identity.

Before release, obtain manufacturer confirmation of the exact MC44BS374T1AEF ordering code and package, restore the local 16-SOIC image, and verify the current controlled electrical and mechanical documents. Validate RF output, regional channel allocation, modulation settings, and EMC performance in the actual system.