SN75468N

Overview

The SN75468N is a high-voltage Darlington transistor array manufactured by Texas Instruments. It integrates seven independent NPN Darlington pairs within a single 16-pin PDIP package. The device supports a maximum collector-emitter voltage of 100V and a continuous collector current of 500mA per channel. It features an internal clamp diode connected to the emitter of each output transistor, facilitating inductive load switching. The component operates within a junction temperature range up to 150°C and is designed for through-hole mounting.

Feature Summary

• Integrates seven independent NPN Darlington transistor pairs for multi-channel control
• Includes internal emitter clamp diodes on all outputs to manage inductive kickback
• Supports high-voltage operation with a 100V collector-emitter breakdown rating
• Provides high current drive capability suitable for direct interfacing with relays and solenoids

Applications

• Driving stepper motors and other inductive loads
• Relay driver circuits requiring high voltage isolation
• Solenoid actuation systems
• High-voltage logic buffering and level shifting

Procurement Notes

Verify the specific suffix against the manufacturer's official documentation to confirm pinout compatibility and electrical specifications. Ensure the selected variant matches the required thermal management and packaging constraints for the target assembly process.

Selection Notes

Select this component when multiple high-voltage switching channels are required in a compact form factor. Compare alternative arrays based on saturation voltage characteristics and total power dissipation limits under expected load conditions.

Part Context

This part belongs to the SN7546x series of Darlington transistor arrays from Texas Instruments. It shares functional similarities with other devices in the family but is distinguished by its specific voltage ratings and package configuration. The series is commonly used in industrial control applications requiring robust switching capabilities.

Replacement Considerations

The ULN2003D1013TR from STMicroelectronics is listed as a similar replacement option. Verify that the substitute meets the 100V voltage requirement and check for differences in pinout or internal diode configuration before implementation.