The DM5407 is a hex non-inverting buffer/driver with open-collector outputs, manufactured by National Semiconductor (now Texas Instruments). It is part of the 54/74 series of TTL logic gates designed for a wide range of digital applications where high output drive capability is needed.
Applications:
- Bus Drivers: Used to drive signals on a data bus, providing sufficient current to overcome the capacitance of the bus.
- Lamp Drivers: Employed to drive indicator lamps or LEDs.
- Relay Drivers: Used to control relays by providing the necessary current to energize the relay coil.
- Line Drivers: Applied to drive signals over long lines, ensuring signal integrity and preventing signal degradation.
- Logic Level Translation: Can be used for logic level translation between different voltage levels.
Features:
- Hex Buffer/Driver: Contains six independent non-inverting buffers/drivers in a single package.
- Open-Collector Outputs: Provides open-collector outputs, allowing for wired-OR logic and flexible voltage level adaptation.
- High Output Current: Offers high output current capability, enabling the driving of multiple loads or devices.
- Wide Operating Voltage Range: Operates over a wide voltage range compatible with standard TTL logic levels.
- High Noise Immunity: Designed for high noise immunity, ensuring reliable operation in noisy environments.
Benefits:
- Increased Drive Capability: Provides increased drive capability for driving high-capacitance loads and long lines.
- Flexible Logic Design: Open-collector outputs allow for flexible logic design and wired-OR logic implementation.
- Simplified Interface: Simplifies interfacing with different voltage levels and devices.
- Enhanced System Reliability: High noise immunity ensures reliable operation in noisy environments.
- Reduced Component Count: Hex configuration reduces component count and board space.
The DM5407 is typically packaged in a 14-pin DIP or flatpack package. The DM54 prefix indicates that it is designed for the military temperature range (-55°C to +125°C). Key electrical parameters include a maximum supply voltage of 5.5V, a typical propagation delay of 7ns, and a maximum output current of 40mA. Because of the open-collector output, an external pull-up resistor is required for proper operation. Refer to the manufacturer’s datasheet for detailed specifications and application guidelines.