Overview
The SN74ABT244APWR is a dual 4-bit buffer/line driver with 3-state outputs, produced by Texas Instruments. This device is part of the 74ABT series and is designed to improve the performance and density of memory address drivers, clock drivers, and bus-oriented receivers and transmitters. It operates within a supply voltage range of 4.5V to 5.5V and is packaged in a 20-pin TSSOP (Thin Shrink Small Outline Package) configuration.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| Supply Voltage (VCC) | 4.5 | 5.5 | V |
| High-Level Input Voltage (VIH) | 2 | 2 | V |
| Low-Level Input Voltage (VIL) | 0.8 | 0.8 | V |
| High-Level Output Current (IOH) | -24 | -32 | mA |
| Low-Level Output Current (IOL) | 48 | 64 | mA |
| Operating Temperature Range | -40 | 85 | °C |
| Input Transition Rise or Fall Rate | 5 | 5 | ns/V |
| Propagation Delay Time (tPLH, tPHL) | 1 | 4.6 | ns |
Key Features
- State-of-the-Art EPIC-IIB BiCMOS Design: Significantly reduces power dissipation.
- High-Drive Outputs: Capable of sourcing up to -24 mA and sinking up to 48 mA.
- 3-State Outputs: Outputs can be set to a high-impedance state.
- ESD Protection: Exceeds 2000 V per MIL-STD-883, Method 3015, and 200 V using the machine model.
- Latch-Up Performance: Exceeds 500 mA per JEDEC Standard JESD-17.
- TTL-Compatible CMOS Inputs.
- Extended Temperature Performance: Operates from -40°C to 85°C.
Applications
- Memory Address Drivers: Ideal for driving memory address lines.
- Clock Drivers: Suitable for distributing clock signals in digital systems.
- Bus-Oriented Receivers and Transmitters: Used in bus communication systems to buffer and drive signals.
- Digital Systems: General-purpose buffering and driving in various digital circuits.
Q & A
- What is the operating voltage range of the SN74ABT244APWR?
The operating voltage range is 4.5V to 5.5V.
- What is the package type of the SN74ABT244APWR?
The device is packaged in a 20-pin TSSOP (Thin Shrink Small Outline Package).
- What are the high-level and low-level output currents of the SN74ABT244APWR?
The high-level output current (IOH) is up to -24 mA, and the low-level output current (IOL) is up to 48 mA.
- What is the operating temperature range of the SN74ABT244APWR?
The operating temperature range is from -40°C to 85°C.
- Does the SN74ABT244APWR have ESD protection?
- What is the propagation delay time of the SN74ABT244APWR?
The propagation delay time (tPLH, tPHL) is typically between 1 ns and 4.6 ns.
- How do I ensure the high-impedance state during power up or power down?
OE should be tied to VCC through a pull-up resistor.
- Is the SN74ABT244APWR compatible with TTL inputs?
- What are some common applications of the SN74ABT244APWR?
It is commonly used in memory address drivers, clock drivers, bus-oriented receivers and transmitters, and general-purpose buffering and driving in digital systems.
- Is the SN74ABT244APWR still in production?
No, the SN74ABT244A series has been discontinued by Texas Instruments, but existing stock may still be available from various distributors.
