Overview
The SN74LS244NE4 is an octal buffer and line driver integrated circuit manufactured by Texas Instruments. This device is part of the 74LS series, known for its low power Schottky (LS) technology, which offers improved performance and reduced power consumption. The SN74LS244NE4 is designed to enhance the performance and density of three-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters.
It features two 4-bit buffers and drivers with separate output-enable (G) inputs, allowing for flexible control over the output states. When the output-enable input is low, the device passes data from the A inputs to the Y outputs, and when it is high, the outputs are in the high impedance state.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | SN74LS244NE4 |
| Package Type | 20-DIP (0.300", 7.62mm) |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 2 |
| Number of Bits per Element | 4 |
| Output Type | Push-Pull |
| Current - Output High, Low | 15mA, 24mA |
| Voltage - Supply | 4.75 V ~ 5.25 V |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Mounting Type | Through Hole |
| Propagation Delay (tpd) at Nom Voltage (Max) | 18 ns |
| RoHS Compliance | Yes |
Key Features
- Three-state outputs to drive bus lines or buffer memory address registers.
- PNP inputs reduce DC loading and improve noise margins due to hysteresis at inputs.
- High fan-out and improved fan-in capabilities.
- Able to drive terminated lines down to 133 Ω.
- Separate output-enable (G) inputs for each 4-bit buffer and driver.
- Low power Schottky (LS) technology for reduced power consumption.
Applications
- Servers and data centers for memory address drivers and clock drivers.
- LED displays and other display systems requiring buffer and driver functions.
- Network switches and telecom infrastructure for bus-oriented receivers and transmitters.
- Motor drivers and I/O expanders in various industrial and automotive applications.
Q & A
- What is the primary function of the SN74LS244NE4?
The SN74LS244NE4 is an octal buffer and line driver designed to improve the performance and density of three-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters.
- What is the package type of the SN74LS244NE4?
The package type is 20-DIP (0.300", 7.62mm).
- What is the operating temperature range of the SN74LS244NE4?
The operating temperature range is 0°C to 70°C.
- What is the maximum propagation delay of the SN74LS244NE4 at 5V?
The maximum propagation delay is 18 ns.
- Is the SN74LS244NE4 RoHS compliant?
Yes, the SN74LS244NE4 is RoHS compliant.
- What are the typical applications of the SN74LS244NE4?
Typical applications include servers, LED displays, network switches, telecom infrastructure, motor drivers, and I/O expanders.
- How many bits per element does the SN74LS244NE4 have?
The device has 4 bits per element, organized as two 4-bit buffers and drivers.
- What is the output type of the SN74LS244NE4?
The output type is push-pull.
- Can the SN74LS244NE4 drive terminated lines?
Yes, it can drive terminated lines down to 133 Ω.
- What is the supply voltage range for the SN74LS244NE4?
The supply voltage range is 4.75 V to 5.25 V.
