Overview
The SN74AHCT244PWR is an octal buffer/driver integrated circuit produced by Texas Instruments. It is part of the Advanced High-Speed CMOS (AHC) logic family and is designed to enhance the performance and density of 3-state memory-address drivers, clock drivers, and bus-oriented receivers and transmitters. The device is organized as two 4-bit buffers/line drivers with separate output-enable (OE) inputs, allowing for data to be passed from the A inputs to the Y outputs when OE is low, and entering a high-impedance state when OE is high.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Number of Bits | 8 | ||
| Operating Temperature Range | -40 to 85 | °C | |
| Supply Voltage (VCC) | 4.5 to 5.5 | V | |
| Output Drive (IOL/IOH) | -8/8 | mA | |
| Propagation Delay (tpd) at Nominal Voltage | 9.5 | ns | CL = 50 pF |
| Power Dissipation Capacitance (Cpd) | 8.2 | pF | No load, f = 1 MHz |
| Package Type | TSSOP (PW) | 20 pins | |
| RoHS Compliance | Compliant |
Key Features
- Inputs are TTL-voltage compatible, allowing for voltage translation from 3.3 V to 5 V.
- Slow edge rates minimize output ringing, enhancing signal integrity.
- Latch-up performance exceeds 250 mA per JESD 17.
- Separate output-enable (OE) inputs for each 4-bit buffer/driver section.
- High-impedance state during power up or power down when OE is tied to VCC through a pullup resistor.
Applications
The SN74AHCT244PWR is suitable for various applications, including:
- 3-state memory-address drivers.
- Clock drivers.
- Bus-oriented receivers and transmitters.
- High-speed CMOS and TTL-compatible logic circuits.
- Low-power and low-drive applications where high speed is required.
Q & A
- What is the operating temperature range of the SN74AHCT244PWR?
The operating temperature range is -40°C to 85°C.
- What is the maximum propagation delay of the SN74AHCT244PWR?
The maximum propagation delay (tpd) is 9.5 ns at nominal voltage with a load capacitance of 50 pF.
- Is the SN74AHCT244PWR RoHS compliant?
Yes, the SN74AHCT244PWR is RoHS compliant.
- What is the package type of the SN74AHCT244PWR?
The package type is TSSOP (PW) with 20 pins.
- Can the SN74AHCT244PWR perform voltage translation?
Yes, it allows voltage translation from 3.3 V to 5 V.
- What is the output drive capability of the SN74AHCT244PWR?
The output drive capability is -8 mA / 8 mA.
- How many bits does the SN74AHCT244PWR have?
The device has 8 bits, organized as two 4-bit buffers/line drivers.
- What is the power dissipation capacitance of the SN74AHCT244PWR?
The power dissipation capacitance (Cpd) is 8.2 pF at no load and f = 1 MHz.
- Does the SN74AHCT244PWR have latch-up protection?
Yes, the latch-up performance exceeds 250 mA per JESD 17.
- What are the typical applications of the SN74AHCT244PWR?
Typical applications include 3-state memory-address drivers, clock drivers, and bus-oriented receivers and transmitters.
