Display patterns for BCD input counts above nine are unique symbols to authenticate input conditions. All of the circuits incorporate automatic leading and/or trailing-edge, zero-blanking control (RBI and RBO). Lamp test (LT) of these devices may be performed at any time when the BI/RBO node is at a high logic level. All types contain an overriding blanking input (BI) which can be used to control the lamp intensity (by pulsing) or to inhibit the outputs.
7447 Datasheet Features
- All circuit types feature lamp intensity modulation capability
- Open-collector outputs drive indicators directly
- Lamp-test provision
- Leading/trailing zero suppression
Technical Specifications
| Physical | |
| Case/Package | PDIP |
| Number of Pins | 16 |
| Technical | |
| High-Level Output Current | -200 µA |
| Independent Circuits | 1 |
| Logic Function | Decoder |
| Low-Level Output Current | 8 mA |
| Max Input Voltage | 5.25 V |
| Max Operating Temperature | 70 °C |
| Min Input Voltage | 4.75 V |
| Min Operating Temperature | 0 °C |
| Operating Supply Voltage | 5.25 V |
| Supply Type | Single |
