| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.00 | $0.00 |
| 15+ | $0.00 | $0.00 |
| 25+ | $0.00 | $0.00 |
| 50+ | $0.00 | $0.00 |
| 100+ | $0.00 | $0.00 |
| N+ | $0.00 | Price Inquiry |
Request Quote / Inquiry
| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | | |
| Part Status | Active |
| Logic Type | Peripheral Driver |
| Number of Elements | 2 |
| Number of Bits per Element | 1 |
| Input Type | - |
| Output Type | Open Collector |
| Current - Output High, Low | 300µA, 300mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-CLCC |
| Supplier Device Package | 20-CLCC |
| ROHS |  |
The SNJ55451BFK is a dual peripheral driver from Texas Instruments, designed to bridge low-power logic circuits and high-current loads. It features two open-collector outputs capable of sinking up to 300mA, making it ideal for driving relays, solenoids, lamps, and LEDs. Operating from a 4.5V to 5.5V logic supply, it provides a simple interface between 5V logic and higher-voltage or higher-current peripherals. Housed in a 20-CLCC ceramic package, it is rated for -55°C to 125°C, ensuring robust performance in industrial and military environments.
- High Current Sinking (300mA): Directly drives relays, solenoids, and lamps without external transistors.
- Open-Collector Outputs: Provides flexibility to connect loads to different supply voltages, enabling level shifting.
- Dual Channel Design: Two independent drivers in one package save board space and simplify layout.
- Wide Temperature Range: -55°C to 125°C operation makes it suitable for harsh environments.
- Ceramic Package: Offers high reliability and hermetic sealing for mission-critical applications.
Relay and Solenoid Driving
The SNJ55451BFK can directly drive relays and solenoids in industrial control systems. The 300mA sink current is sufficient for many small-to-medium relays, and the open-collector output allows for a separate load supply voltage.
LED Display and Lamp Drivers
Drive high-current LEDs or incandescent lamps in indicator panels. The open-collector output can switch loads up to 30V (depending on external components), making it versatile for various lighting applications.
Motor Control Interfaces
Interface low-voltage logic to higher-power motor driver stages. The high current capability allows it to drive the gate or base of power transistors, providing a buffer between control logic and power electronics.
Automotive ECU Outputs
In automotive engine control units, this driver can actuate fuel injectors or solenoids. Its wide temperature range (-55°C to 125°C) ensures reliable operation under hood.
Industrial Logic-to-Power Conversion
Convert 5V logic signals to higher-voltage industrial signals (e.g., 12V or 24V) using an external pull-up resistor. The open-collector output enables this level shifting with minimal components.
Peripheral Power Switching
Use it to power up or down peripheral devices in a system. The high current rating allows for controlled switching of external modules, reducing standby power consumption.
- Q: What is the logic family of the SNJ55451BFK?
- A: It is a standard 54-series peripheral driver, not a specific high-speed logic family.
- Q: What is the function of this IC?
- A: It is a dual (2-channel) peripheral driver designed to interface logic signals to loads like relays, lamps, or LEDs.
- Q: How many channels does it have?
- A: It contains 2 independent driver channels.
- Q: What is the output type?
- A: The outputs are Open Collector, allowing for high-voltage or high-current switching.
- Q: What is the operating voltage range?
- A: It operates from 4.5V to 5.5V for the logic supply.
- Q: What is the maximum output current?
- A: It can sink up to 300mA per channel, making it suitable for driving inductive or resistive loads.
SNJ55451BFK.pdf
- Q: What is the logic family of the SNJ55451BFK?
- A: It is a standard 54-series peripheral driver, not a specific high-speed logic family.
- Q: What is the function of this IC?
- A: It is a dual (2-channel) peripheral driver designed to interface logic signals to loads like relays, lamps, or LEDs.
- Q: How many channels does it have?
- A: It contains 2 independent driver channels.
- Q: What is the output type?
- A: The outputs are Open Collector, allowing for high-voltage or high-current switching.
- Q: What is the operating voltage range?
- A: It operates from 4.5V to 5.5V for the logic supply.
- Q: What is the maximum output current?
- A: It can sink up to 300mA per channel, making it suitable for driving inductive or resistive loads.