ULN2003AIDE4

Overview

The ULN2003AIDE4 is a high-voltage, high-current Darlington transistor array manufactured by Texas Instruments. It contains seven open-collector Darlington pairs with common emitters, each rated for 500 mA continuous collector current and capable of withstanding 600 mA peak currents. The device supports output voltages up to 50 V and includes integrated suppression diodes for inductive load driving. Designed for through-hole mounting, it utilizes a 16-pin Small Outline Package (SOIC-16) with a copper leadframe to minimize thermal resistance. The inputs are positioned opposite the outputs to simplify printed circuit board layout.

Feature Summary

• Contains seven independent Darlington pairs for simultaneous multi-channel load control
• Integrated suppression diodes provide protection against voltage spikes from inductive loads
• Input pins placed opposite output pins to facilitate simplified circuit board routing
• Compatible with various logic families including TTL, CMOS, PMOS, and DTL

Applications

• Driving solenoids and relays
• Controlling DC motors
• Powering LED displays and filament lamps
• Operating thermal printheads
• High-power buffering applications

Procurement Notes

Verify that the ordering suffix 'E4' corresponds to the specific tape-and-reel packaging or environmental compliance status defined by Texas Instruments. Confirm the package designation matches the SOIC-16 form factor rather than the PDIP variant. Ensure the component meets the required operating temperature range and electrical specifications for the target design before procurement.

Selection Notes

Select this component when seven independent high-current switching channels are required within a single integrated circuit. It is suitable for interfacing low-power logic signals to high-voltage loads such as relays or stepper motors. Consider the SOIC-16 package constraints regarding thermal dissipation and pin pitch if space is limited compared to the DIP version.

Part Context

This part belongs to the ULN2000 series of high-voltage Darlington arrays developed by Texas Instruments. The ULN2003A variant specifically features input resistors optimized for 5 V TTL and CMOS logic levels. The 'E4' suffix typically indicates a specific manufacturing lot, lead finish, or packaging configuration distinct from the standard ULN2003AN or ULN2003AD variants.

Replacement Considerations

Direct functional substitutes include the ULN2003AN (PDIP-16) and ULN2003AD (SOIC-16). Verify that replacement parts maintain the same 500 mA per channel rating and 50 V output voltage capability. Ensure the substitute package type matches the existing footprint or allows for appropriate adapter usage.