Overview
The SN75468, produced by Texas Instruments, is a high-voltage, high-current Darlington transistor array. This component consists of seven NPN Darlington pairs, each featuring high-voltage outputs with common-cathode clamp diodes. These diodes are specifically designed for switching inductive loads. The SN75468 is particularly useful for applications requiring high current and voltage handling, such as relay drivers, hammer drivers, lamp drivers, and display drivers for LED and gas discharge displays.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector Current Rating (Single Output) | 500 mA | mA |
| High-Voltage Output | 100 V | V |
| Series Base Resistor | 2700 Ω | Ω |
| Operating Temperature Range | 0 to 70 | °C |
| Package Type | PDIP (N), SOIC (D), SOP (NS) | |
| Number of Pins | 16 | |
| Package Quantity | TUBE of 25 (PDIP), TUBE of 40 (SOIC), Reel of 2000 (SOP) | |
| Thermal Impedance (θJA) | 67°C/W (N package), 73°C/W (D package), 64°C/W (NS package) | °C/W |
Key Features
- 500-mA Rated Collector Current (Single Output)
- High-Voltage Output up to 100 V
- Output Clamp Diodes for inductive load switching
- Inputs Compatible With Various Types of Logic (TTL or 5-V CMOS)
- Higher-Voltage Versions of ULN2003A and ULN2004A for Commercial Temperature Range
- Darlington pairs can be paralleled for higher current capability
Applications
- Relay Drivers
- Hammer Drivers
- Lamp Drivers
- Display Drivers (LED and gas discharge)
- Line Drivers
- Logic Buffers
Q & A
- What is the collector current rating of the SN75468?
The collector current rating of the SN75468 is 500 mA per Darlington pair.
- What is the maximum high-voltage output of the SN75468?
The maximum high-voltage output of the SN75468 is 100 V.
- What types of logic are the inputs of the SN75468 compatible with?
The inputs of the SN75468 are compatible with TTL or 5-V CMOS logic.
- Can the Darlington pairs of the SN75468 be paralleled for higher current capability?
Yes, the Darlington pairs of the SN75468 can be paralleled for higher current capability.
- What are some common applications of the SN75468?
Common applications include relay drivers, hammer drivers, lamp drivers, display drivers, line drivers, and logic buffers.
- What is the operating temperature range of the SN75468?
The operating temperature range of the SN75468 is from 0°C to 70°C.
- What are the available package types for the SN75468?
The SN75468 is available in PDIP (N), SOIC (D), and SOP (NS) packages.
- How many pins does the SN75468 have?
The SN75468 has 16 pins.
- What is the thermal impedance (θJA) of the SN75468 in different packages?
The thermal impedance (θJA) is 67°C/W for the N package, 73°C/W for the D package, and 64°C/W for the NS package.
- Are the SN75468 and SN75469 interchangeable?
No, they are not interchangeable. The SN75469 has a 10.5-kΩ series base resistor, allowing it to operate with CMOS or PMOS using supply voltages of 6 to 15 V, whereas the SN75468 has a 2700-Ω series base resistor for operation with TTL or 5-V CMOS.
