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The SN75468NE4 is a high-voltage, high-current Darlington transistor array manufactured by Texas Instruments. It integrates seven NPN Darlington pairs within a single 16-pin PDIP package. Each channel provides a rated collector current of 500 mA and supports output voltages up to 100 V. The device includes common-cathode clamp diodes for switching inductive loads and features a 2700-Ω series base resistor per pair, enabling direct interface with TTL or 5-V CMOS logic. It operates over an ambient temperature range of 0°C to 70°C.
Verify the specific 'E4' suffix indicates lead-free composition compliant with RoHS standards. Confirm the package type matches the required through-hole mounting configuration. Ensure the operating environment remains within the specified commercial temperature limits. Check datasheet revisions for any updates regarding thermal resistance or electrical characteristics before finalizing the design.
Select this component when driving inductive loads requiring up to 500 mA per channel at voltages up to 100 V. The integrated base resistors simplify interfacing with 3.3 V or 5 V logic controllers. Consider paralleling outputs if higher current capacity than a single channel is needed. Verify that the thermal dissipation requirements are met for the expected duty cycle and ambient temperature conditions.
The SN75468NE4 belongs to the SN7546x family of Darlington arrays, which also includes the SN75469. While functionally similar, the SN75469 utilizes a larger 10.5-kΩ base resistor suitable for higher voltage CMOS or PMOS inputs. The NE4 designation specifically identifies the PDIP package variant with lead-free plating, distinguishing it from SOIC or SOP surface-mount versions.
The ULN2003D1013TR from STMicroelectronics is listed as a similar alternative part number.