NTE1427 Integrated Circuit VTR Reference Frequency Divider
Description: The NTE1427 is an integrated circuit designed for VTR's reference frequency dividing. Features: D The functions consist of: 3.58MHz, 4.43MHz crystal oscillation Frequency divider circuit D Divider ratio changeable either for NTSC system or PAL system D Divider output frequency NTSC system 59.9Hz (3.58MHz) PAL system 50.0Hz (4.43MHz) D Supply voltage either 9V or 12V Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.5V Supply Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.5mA Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280C Operating Supply Voltage, VCC(opr) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.8 ~ 12.5V Operation ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 +70C Storage temperature, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 +150C Electrical Characteristics: (TA = +25C unless otherwise specified)
Parameter Total circuit current Sensitivity (Divider Input) Sensitivity (N/P Switch) High-level output voltage (Divider) Low-level output voltage (Divider) Output Voltage (X'tal Osc) Symbol Itot S(1) S(2) VOH VOL VO VCC = 9v, 3.58 Test Conditions V7-4 = 9V VCC = 9V VCC = 9V Min 13 400 3 4.5 - Typ - - - - - Max 21 - - - 0.5 Unit mA mVp-p V V V
Pin Connection Diagram
7 VCC 6 5 4 3 2 1 NTSC/PAL Select Divide Output GND X'tal OSC X'tal OSC OSC Output
.728 (18.5) Max
.118 (3.0)
.248 (6.3 Max
.095 (2.42) 1 7
.118 (3.0) Min .100 (2.54) .600 (15.24) .012 (0.32)
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