The SN75468 is a high voltage, high current Darlington transistor array. Each consists of seven npn Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads. The collector-current rating of each Darlington pair is 500 mA. The Darlington pairs may be paralleled for higher current capability. Applications include relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers. The SN75468 has a 2700-Ω series base resistor for each Darlington pair for operation directly with TTL or 5-V CMOS. The SN75469 has a 10.5-kΩ series base resistor to allow its operation directly with CMOS or PMOS that use supply voltages of 6 to 15 V. The required input current is below that of the SN75468.
The SN75468 and SN75469 are high‑voltage, high‑current Darlington transistor arrays featuring seven npn Darlington pairs with 500 mA rated collector current per pair. They provide high‑voltage outputs (100 V) with common‑cathode clamp diodes, suitable for relay, lamp, LED, and logic buffer applications.
The document includes ordering information, electrical characteristics, absolute maximum ratings, thermal data, mechanical dimensions, and an important notice on product warranty and usage restrictions.
| Maximum Collector Current per Pair | 500 mA |
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Each Darlington pair is rated for 500 mA collector current.