Large industrial 7-segment displays (e.g., 2.3-inch digits) require 50-100mA per segment. The SN51DP can sink this current.
Use the SN51DP when you need more than 500mA per channel but have limited PCB space for multiple discrete transistors. Use the ULN2003 for lower current (300-500mA) logic interfacing. sn51dp datasheet
| Parameter | Test Conditions | Min | Typ | Max | Unit | | :--- | :--- | :--- | :--- | :--- | :--- | | | VCE = 50V, Input = 0V | - | - | 100 | µA | | Collector-Emitter Saturation Voltage | IC = 500mA, IB = 5mA | - | 0.9 | 1.2 | V | | Collector-Emitter Saturation Voltage | IC = 1A, IB = 10mA | - | 1.1 | 1.6 | V | | Input Current (ON state) | VIN = 5V | - | 0.9 | 1.5 | mA | | Input Voltage (ON state) | VCE = 2V, IC = 500mA | - | 2.4 | - | V | | Input Voltage (OFF state) | IC = 100µA | - | - | 0.8 | V | | DC Current Gain (hFE) | VCE = 2V, IC = 500mA | 1000 | 2000 | - | - | Large industrial 7-segment displays (e