Overview
The SN75468NE4, produced by Texas Instruments, is a high-voltage, high-current Darlington transistor array. This device consists of seven NPN Darlington pairs, each capable of handling a collector current of up to 500 mA. It is designed to operate with high-voltage outputs and features common-cathode clamp diodes for effectively switching inductive loads. The SN75468NE4 is compatible with various types of logic, including TTL and 5-V CMOS, due to its 2700-Ω series base resistor for each Darlington pair. This makes it versatile for a wide range of applications, including driving relays, solenoids, lamps, and small motors.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector Current (Single Output) | 500 | mA |
| High-Voltage Output | 100 | V |
| Series Base Resistor | 2700 | Ω |
| Operating Temperature Range | –40°C to 105°C | °C |
| Package Type | PDIP (N) | |
| Number of Pins | 16 | |
| Collector-Emitter Saturation Voltage (VCE(sat)) | 0.9 - 1.1 | V |
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, 5-V CMOS)
- Higher-Voltage Versions of ULN2003A and ULN2004A
- Ability to parallel Darlington pairs for higher current capability
Applications
- Relay Drivers
- Hammer Drivers
- Lamp Drivers
- Display Drivers (LED and gas discharge)
- Line Drivers
- Logic Buffers
- Solenoids and small motors
Q & A
- What is the collector current rating of the SN75468NE4?
The collector current rating of the SN75468NE4 is 500 mA per Darlington pair.
- What is the high-voltage output capability of the SN75468NE4?
The SN75468NE4 can handle high-voltage outputs up to 100 V.
- What type of logic is the SN75468NE4 compatible with?
The SN75468NE4 is compatible with TTL and 5-V CMOS logic due to its 2700-Ω series base resistor.
- What is the purpose of the output clamp diodes in the SN75468NE4?
The output clamp diodes are used to suppress the kick-back voltage from inductive loads.
- Can the Darlington pairs in the SN75468NE4 be paralleled for higher current capability?
Yes, the Darlington pairs can be paralleled to achieve higher current capability.
- What is the operating temperature range of the SN75468NE4?
The operating temperature range is from –40°C to 105°C.
- What types of loads can the SN75468NE4 drive?
The SN75468NE4 can drive inductive loads, resistive loads, relays, solenoids, lamps, and small motors.
- What is the package type of the SN75468NE4?
The package type is PDIP (N) with 16 pins.
- How does the SN75468NE4 handle power dissipation?
The device must be operated within the maximum allowable power dissipation to ensure reliability, which is dependent on the number of active channels and the ambient temperature.
- What are some common applications of the SN75468NE4?
Common applications include relay drivers, hammer drivers, lamp drivers, display drivers, line drivers, and logic buffers.
