Overview
The SN74LS244NS is an octal buffer and line driver produced by Texas Instruments. This component is designed to enhance the performance and density of three-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. It offers a range of configurations including inverting and non-inverting outputs, symmetrical, active-low output-control (G) inputs, and complementary output-control (G and G) inputs. This device is particularly useful in applications requiring high fan-out, improved fan-in, and robust noise margins.
Key Specifications
| Parameter | Value |
|---|---|
| Logic Type | Buffer, Non-Inverting |
| Mounting Type | Surface Mount |
| Number of Bits per Element | 4 |
| Number of Elements | 2 |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Output Type | 3-State |
| Package | 20-SOIC (0.209", 5.30mm Width) |
| Supplier Device Package | 20-SO |
| Voltage | 4.75V ~ 5.25V |
| Maximum Propagation Delay (tpd) | 15 ns at 5 V |
| Current | 15mA, 24mA |
Key Features
- 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers
- PNP Inputs Reduce DC Loading
- Hysteresis at Inputs Improves Noise Margins
- High Fan-Out and Improved Fan-In
- 400-mV Noise Margin
- Inputs Tolerant Down to 2 V, Compatible With 3.3-V or 2.5-V Logic Inputs
- Can Drive Terminated Lines Down to 133 Ω
Applications
- Servers
- LED Displays
- Network Switches
- Telecom Infrastructure
- Motor Drivers
- I/O Expanders
Q & A
- What is the primary function of the SN74LS244NS?
The SN74LS244NS 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 are the key features of the SN74LS244NS?
Key features include 3-state outputs, PNP inputs to reduce DC loading, hysteresis at inputs for improved noise margins, high fan-out, and compatibility with 3.3-V or 2.5-V logic inputs. - What is the operating temperature range of the SN74LS244NS?
The operating temperature range is 0°C to 70°C. - What is the maximum propagation delay of the SN74LS244NS at 5 V?
The maximum propagation delay is 15 ns at 5 V. - What types of applications is the SN74LS244NS suitable for?
It is suitable for servers, LED displays, network switches, telecom infrastructure, motor drivers, and I/O expanders. - What is the package type of the SN74LS244NS?
The package type is 20-SOIC (0.209", 5.30mm Width). - Can the SN74LS244NS drive terminated lines?
Yes, it can drive terminated lines down to 133 Ω. - What is the voltage range for the SN74LS244NS?
The voltage range is 4.75V to 5.25V. - Does the SN74LS244NS have noise margin protection?
Yes, it has a 400-mV noise margin. - Are the inputs of the SN74LS244NS tolerant to lower voltage levels?
Yes, the inputs are tolerant down to 2 V and are compatible with 3.3-V or 2.5-V logic inputs.
