The MC44CC373 / MC44CC374 CMOS family of RF modulators is the latest generation of the legacy MC44BS373/4 family of devices.

The MC44CC373/MC44CC374 RF modulators are designed for use in VCRs, set-top boxes, and similar devices.They support multiple standards, and can be programmed to support PAL, SECAM, or NTSC formats.

Features

• Multi-TV standard support: NTSC, PAL, SECAM (B/G, I, D/K, L, M/N).

• UHF operation (460MHz to 880MHz)

• Programmable UHF oscillator and sound subcarrier oscillator.

• On-chip tank circuits. No external varicaps inductors or tuned components required.

• Program control via 800 kHz high-speed I2C-bus.

• Programmable Sound reference frequency (31.25 kHz or 62.5 kHz)

• Direct sound modulator input (FM and AM).

• Auxiliary input bypasses AM/FM modulators for NICAM or BTSC applications.

• Video modulation depth (96 typ. in system L and 85 typ. in the other standards)

• Programmable Peak White Clip levels

• On-chip video test pattern generator with sound test signal (1 kHz)

• Low-power standby mode

• Output inhibit during PLL Lock-up at power-ON

• Logical output port controlled by I2C-bus