MC44BS374T1

Multi-Standard Audio/Video Modulator; \n•MC44BS374T1 available in channel 36 startup frequency (591.25 MHz) \n•MC44BS374T1A available in channel 71 startup frequency (871.25 MHz) \n•No external varicaps diodes/inductor or tuned components\n•Channel 21-69 UHF operation\n•VHF range possible by internal dividers (30 MHz to 450 MHz)\n•Integrated on-chip programmable UHF oscillator\n•Extremely low external components count\n•High-speed read and write I2C-bus compatible (800 kHz)\n•Fixed video modulation depth (80% in PAL and 90% in SECAM)\n•Peak White Clip disabled via the bus\n•Programmable picture/sound carrier ratio (12 dB and 16 dB)\n•Integrated on-chip programmable sound subcarrier oscillator (4.5 MHz to 6.5 MHz)—no external varicaps\n•On-chip video test pattern generator with sound test signal (1 kHz)\n•Low-power programmable modulator standby mode programmable by I2C Bus or switchable by STBY pin voltage\n•Transient output inhibit during PLL lock-up at power-on\n•Custom masked versions with unique start-up settings possible (no I2C bus programming required)\n•Extremely robust ESD protection, minimum 4 kV, typical 6 kV\n\n;

Overview The MC44BS374T1 and MC44BS374T1A are phase-locked loop (PLL) tuned, ultra highfrequency (UHF) and very high frequency (VHF), audio/video (A/V), high integrationmodulator, integrated circuits (IC). These devices are intended for use in VCRs,games, and set-top box systems, and both use \"T\" software.The MC44BS374T1 and MC44BS374T1A have the same hardware package as the MC44BS374CA.The only difference is the software and the start up channel.The MC44BS374T1 starts up on channel 36 (591.25 MHz) and the MC44BS374T1A startsup on channel 71 (871.25 MHz). Both are compatible with the following formats: PAL—Phase Alternation Line (European TV format) NTSC—National Television System Committee An on-chip high-speed I2C compatible bus receiver sets the channel. It is tuned by a PLL over the full range of the UHF bands. The modulator incorporates a sound subcarrier oscillator and uses a second PLL to derive 4.5, 5.5, 6.0, and 6.5 MHz subcarrier frequencies, which are selectable using the bus.The modulation standard is chosen using a control bit that selects between System L and System B/G.The picture-to-sound ratio may be adjusted using the bus. In addition, an on-chip video test pattern generator can be switched ON with a 1 KHz audio test signal.The MC44BS374T1 and MC44BS374T1A are available in a 16-pin (SO16NB) package.

MC44BS374T1

PLL Tuned UHF and VHF Audio/Video High Integration Modulator

MC44BS374T1AD

CMOS Audio/Video RF Modulators

TheMC44CC373/MC44CC374CMOSfamilyofRFmodulatorsisthelatestgenerationofthelegacyMC44BS373/4familyofdevices. TheMC44CC373/MC44CC374RFmodulatorsaredesignedforuseinVCRs,set-topboxes,andsimilardevices.Theysupportmultiplestandards,andcanbeprogrammedtosupportPAL

MC44BS374T1AEF

CMOS Audio/Video RF Modulators

TheMC44CC373/MC44CC374CMOSfamilyofRFmodulatorsisthelatestgenerationofthelegacyMC44BS373/4familyofdevices. TheMC44CC373/MC44CC374RFmodulatorsaredesignedforuseinVCRs,set-topboxes,andsimilardevices.Theysupportmultiplestandards,andcanbeprogrammedtosupportPAL

MC44BS374T1D

CMOS Audio/Video RF Modulators

TheMC44CC373/MC44CC374CMOSfamilyofRFmodulatorsisthelatestgenerationofthelegacyMC44BS373/4familyofdevices. TheMC44CC373/MC44CC374RFmodulatorsaredesignedforuseinVCRs,set-topboxes,andsimilardevices.Theysupportmultiplestandards,andcanbeprogrammedtosupportPAL

MC44BS374T1EF

CMOS Audio/Video RF Modulators

TheMC44CC373/MC44CC374CMOSfamilyofRFmodulatorsisthelatestgenerationofthelegacyMC44BS373/4familyofdevices. TheMC44CC373/MC44CC374RFmodulatorsaredesignedforuseinVCRs,set-topboxes,andsimilardevices.Theysupportmultiplestandards,andcanbeprogrammedtosupportPAL

MC44BS374T1A

PLL Tuned UHF and VHF Audio/Video High Integration Modulator

MC44BS374T1AD-R2

PLL Tuned UHF and VHF Audio/Video High Integration Modulator

MC44BS374T1D-R2

PLL Tuned UHF and VHF Audio/Video High Integration Modulator