MC1377P Color Television RGB to PAL/NTSC Encoder 12V 35mA IC DIP-20
The MC1377P is a color television RGB to PAL/NTSC encoder integrated circuit designed by Motorola. It generates a composite video signal from baseband red, green, blue, and sync inputs. On-board features include a color subcarrier oscillator, a voltage-controlled phase shifter, two double sideband suppressed carrier (DSBSC) chroma modulators, and RGB input matrices with blanking level clamps. These integrated functions allow for circuit design with minimal external components while achieving performance comparable to studio equipment.
Features
- Reference Oscillator.
- Trimmable Chroma Axes.
- On-Chip Regulation.
Specifications
| Parameter | Specification / Value | Conditions / Remarks |
|---|---|---|
| Part Number | MC1377P | Plastic Dual In-Line Package |
| Package Type | 20-Lead Plastic DIP | Motorola |
| Supply Voltage (VCC) | 10.0 V (Min) / 12.0 V (Typ) / 14.0 V (Max) | Absolute Maximum: 15.0 Vdc |
| Supply Current (ICC) | 35 mA (Typ) | At VCC = 12 V, no load on Pin 9 (~60 mA with 150 Ω load) |
| Operating Temperature (TA) | 0°C to +70°C | Ambient temperature range |
| Power Dissipation (PD) | 1.25 W (Max) | Maximum rating at TA = 25°C |
| Internal Regulator Output (VB) | 8.2 Vdc Nominal | 7.7 V (Min) to 8.7 V (Max); up to 10 mA external load |
| RGB Input Levels | 1.0 Vpp | Required for 100% saturation; 10 kΩ input impedance |
| Sync Pulse Width | 2.5 μs (Min) to 5.2 μs (Max) | Negative-going sync pulse input |
| Composite Video Output Level | 1.4 Vpp | Luminance: 0.6 Vpp, Chroma: 1.4 Vpp, Burst: 0.6 Vpp |
| Luminance Bandwidth | 8.0 MHz | -3.0 dB point |
| Chrominance Bandwidth | 0.5 MHz to 2.0 MHz | Selectable via external filter components |
| Output Impedance | 50 Ω Nominal | Applies to Composite Video (Pin 9) & Chroma Out (Pin 13) |
| Chroma Axis Accuracy | 90° (±5°) | Optionally trimable via external circuitry |
Pinout
Applications
- Video Encoding.
- TV/Monitor Interfaces.
- S-VHS Signal Source Processing.
- VHF Video Modulation.
Package Content
- 1 x MC1377P Color Television RGB to PAL/NTSC Encoder 12V 35mA IC DIP-20.