Overview
The 74AC244MTR, produced by STMicroelectronics, is an octal buffer and line driver integrated circuit. Although this specific part is now obsolete and no longer manufactured, it was designed to enhance the performance and density of various digital systems. The device is particularly useful in applications requiring 3-state memory address drivers, clock drivers, and bus-oriented transmitters/receivers.
Key Specifications
| Parameter | Symbol | Conditions | Typical | Guaranteed Limits | Unit |
|---|---|---|---|---|---|
| Supply Voltage | VCC | 2.0 to 6.0 V | V | ||
| Input Voltage | VI | 0 to VCC | V | ||
| Output Voltage | VO | 0 to VCC | V | ||
| Operating Temperature | TA | −40 to +85 °C | °C | ||
| Minimum HIGH Level Input Voltage | VIH | VCC = 5.5 V | 2.75 V | V | |
| Maximum LOW Level Input Voltage | VIL | VCC = 5.5 V | 1.65 V | V | |
| Minimum HIGH Level Output Voltage | VOH | IOUT = −50 μA, VCC = 5.5 V | 5.49 V | V | |
| Maximum LOW Level Output Voltage | VOL | IOUT = 50 μA, VCC = 5.5 V | 0.001 V | V | |
| High-level Output Current | IOH | VCC = 5.5 V | −24 mA | mA | |
| Low-level Output Current | IOL | VCC = 5.5 V | 24 mA | mA | |
| Propagation Delay, Data to Output | tPLH | VCC = 5.5 V, CL = 50 pF | 1.5 ns | 7.5 ns | ns |
Key Features
- Octal buffer and line driver with 3-state outputs, suitable for memory address drivers, clock drivers, and bus-oriented transmitters/receivers.
- Operates over a wide supply voltage range of 2.0 to 6.0 V.
- Inputs accept voltages up to 6 V.
- Outputs can source/sink up to 24 mA.
- Reduced ICC and IOZ by 50% compared to previous generations.
- TTL-compatible inputs for the ACT244 version.
- Low propagation delay, with a maximum of 7.5 ns at VCC = 5 V.
Applications
- Servers and network switches.
- LED displays.
- Telecom infrastructure.
- Motor-drive control boards.
- General-purpose buffering and line driving in digital systems.
Q & A
- What is the primary function of the 74AC244MTR?
The primary function of the 74AC244MTR is to act as an octal buffer and line driver, suitable for applications such as memory address drivers, clock drivers, and bus-oriented transmitters/receivers.
- What is the supply voltage range for the 74AC244MTR?
The supply voltage range for the 74AC244MTR is 2.0 to 6.0 V.
- What are the maximum output current capabilities of the 74AC244MTR?
The outputs can source or sink up to 24 mA.
- What are the typical propagation delays for the 74AC244MTR?
The typical propagation delay is around 1.5 ns, with a maximum of 7.5 ns at VCC = 5 V.
- Is the 74AC244MTR still in production?
No, the 74AC244MTR is obsolete and no longer manufactured.
- What are some common applications for the 74AC244MTR?
Common applications include servers, network switches, LED displays, telecom infrastructure, and motor-drive control boards.
- What is the operating temperature range for the 74AC244MTR?
The operating temperature range is −40 to +85 °C.
- What are the input voltage limits for the 74AC244MTR?
The input voltage can range from 0 to VCC.
- Does the 74AC244MTR have TTL-compatible inputs?
Yes, the ACT244 version has TTL-compatible inputs.
- What is the maximum input leakage current for the 74AC244MTR?
The maximum input leakage current is ±1.0 μA.
