Freescale Semiconductor, Inc.
Pin Selection
7 Pin Selection
Pin Nb Pin Name
Device
LO (grounded)
HI (Open or +5V)
MC44BC375U
MC44BC375J
MC44BC375T
CH4
CH2
CH13
CH3
CH1
CH13
1
CHS
2
PSS
MC44BC375U/J/T
MC44BC375U/J/T
MC44BC375U/J/T
14dB
16dB
Power save Mode
LOP pin LO (Low voltage)
Normal Operation
LOP pin HI (High impedance
9
PSave/LO
SFS
16
5.5Mhz
4.5Mhz
By default (open condition), all pins are “HI”.
7.1 Test Modes
Pin
DC level
Vcc + 0.3V
Description
Low frequency testing (RF frequency divided by 4 for MC44BC375U/J, and
divided by 8 for MC44BC375T)
CHS
Vcc + 1.1V
Vcc + 1Vbe
Vcc + 1Vbe
Base band test mode (DC drive applied to modulators)
PSS
SFS
Transient Output Inhibit Disabled
Sound Oscillator OFF
Vcc + 0.3V
Vcc + 1.1V
Force UHF and Sound PLL Upper current source
Force UHF and Sound PLL Lower current source
VIDEO
NOTE:
Test modes are intended for manufacturing test purpose only and not to be
be used for normal application.
8 High Frequency Characteristics (U Version)
For all the following specifications and unless otherwise stated: Vcc = 5.0V, T amb. = 25°C.Video input
1Vp-p, 10 step greyscale.RF inputs / outputs into 75Ω load.SPECIFICATIONS ONLY VALID FOR
ENVELOPE DEMODULATION. Measured on U version on both channel 3 and 4. See Section 11,
“Characterization Measurement Conditions” on page 7 for “C” type parameters.
Parameter
TV OUT output level
Test Conditions
Min Typ Max Unit Type
74
-
76
79 dBµV
B
C
C
C
Sound subcarrier Harmonics (fp+n*fs)
Second Harmonic of chroma subcarrier.
Ref Picture carrier
Using red EBU bar
-73
-65
-65
-65
-55
-60
dBc
dBc
dBc
-
Chroma/Sound intermodulation: fp + (fsnd-fchr) Using red EBU bar
-
2nd harmonic
Fo (picture carrier) Harmonics (See Note1)
3rd harmonic
30
66
42 dBµV
69 dBµV
C
C
Out Band (picture carrier) Spurious
In band spurious (Fo +/- 5 MHz range)
4 MHz Crystal Spurious (Fo +/- 4 MHz)
1/2*Fo - 1/4*Fo - 3/2*Fo - 3/4*Fo
27 dBµV
C
C
C
No video or sound modulation
No video or sound modulation
-70
-82
-62
-75
dBc
dBc
Note: 1: Picture carrier harmonics are highly dependant on PCB layout and decoupling capacitors.
6
MC44BC375/U/J/T Technical Data
For More Information On This Product,
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MOTOROLA
MOTOROLA [ MOTOROLA ]
