Overview
The SN75468N, 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 up to 500 mA of collector current. It is designed to operate with high-voltage outputs and features common-cathode clamp diodes for switching inductive loads. The SN75468N is compatible with various types of logic, including TTL and 5-V CMOS, due to its integrated 2700-Ω series base resistors. This makes it versatile for a wide range of applications, including driving relays, solenoids, lamps, and small motors.
Key Specifications
| Parameter | Test Conditions | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| Collector Current (Single Output) | - | mA | - | - | 500 |
| High-Voltage Output | - | V | - | - | 100 |
| On-state Input Voltage (VI(on)) | VCE = 2 V, IC = 250 mA | V | 2.4 | 2.7 | 3 |
| Collector-Emitter Saturation Voltage (VCE(sat)) | II = 250 µA, IC = 100 mA | V | 0.9 | 1.1 | 1.1 |
| Output Clamp Diode Forward Voltage (VF) | IF = 350 mA | V | 1.7 | 2 | 2 |
| Operating Temperature Range | - | °C | -40 | - | 105 |
| Package Type | - | - | - | - | PDIP (N), SOIC (D), SOP (NS) |
| Pins | - | - | - | - | 16 |
Key Features
- High-Voltage Outputs: Capable of handling up to 100 V.
- High-Current Capability: Each Darlington pair rated for 500 mA of collector current.
- Output Clamp Diodes: For switching inductive loads and suppressing kick-back voltage.
- Logic Compatibility: Inputs compatible with TTL and 5-V CMOS logic due to integrated 2700-Ω series base resistors.
- Higher Current Capability: Darlington pairs can be paralleled for higher current requirements.
- Wide Temperature Range: Operates from –40°C to 105°C.
- Relay Driver Applications: Suitable for driving relays, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers.
Applications
- Relay Drivers: Driving relays in various control systems.
- Hammer Drivers: Controlling hammer or solenoid actuators.
- Lamp Drivers: Driving lamps, including LED and gas discharge displays.
- Display Drivers: Driving display elements such as LEDs and gas discharge tubes.
- Line Drivers: Driving lines in communication systems.
- Logic Buffers: Buffering logic signals in digital circuits.
- Inductive Load Drive: Driving inductive loads such as motors and coils while suppressing kick-back voltage.
Q & A
- What is the maximum collector current rating of the SN75468N?
The maximum collector current rating of the SN75468N is 500 mA per Darlington pair.
- What is the maximum high-voltage output of the SN75468N?
The SN75468N can handle high-voltage outputs up to 100 V.
- Is the SN75468N compatible with TTL and CMOS logic?
Yes, the SN75468N is compatible with TTL and 5-V CMOS logic due to its integrated 2700-Ω series base resistors.
- What is the purpose of the output clamp diodes in the SN75468N?
The output clamp diodes are used to suppress kick-back voltage when switching inductive loads.
- Can the Darlington pairs in the SN75468N 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 SN75468N?
The SN75468N operates from –40°C to 105°C.
- What types of applications is the SN75468N suitable for?
The SN75468N is suitable for relay drivers, hammer drivers, lamp drivers, display drivers, line drivers, and logic buffers.
- How many pins does the SN75468N have?
The SN75468N has 16 pins.
- What are the available package types for the SN75468N?
The SN75468N is available in PDIP (N), SOIC (D), and SOP (NS) packages.
- What is the recommended maximum junction temperature for the SN75468N?
The recommended maximum junction temperature for the SN75468N is less than 125°C.
