Overview
The SN74HC244QPWRQ1 is an octal buffer and line driver produced by Texas Instruments. This integrated circuit is designed to enhance the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. It is organized as two 4-bit buffers/drivers with separate output-enable (OE) inputs. When the OE input is low, the device passes noninverted data from the A inputs to the Y outputs. When the OE input is high, the outputs are in the high-impedance state. This device is qualified for automotive applications and meets the AEC-Q100 standard, ensuring reliability in demanding environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage Range | -0.5 | 7 | V | |
| Operating Temperature Range | -40 | 125 | °C | |
| Input Clamp Current (VI < 0 or VI > VCC) | ±20 | mA | ||
| Output Clamp Current (VO < 0 or VO > VCC) | ±20 | mA | ||
| Continuous Output Current | ±35 | mA | ||
| Propagation Delay Time (tpd) at 5 V | 11 | 20 | ns | |
| Output Drive at 5 V | ±6 | mA | ||
| Input Current | 1 | μA | ||
| Power Dissipation Capacitance per Buffer/Driver | 35 | pF | ||
| Package Type | 20-TSSOP |
Key Features
- Qualified for automotive applications and meets AEC-Q100 standard.
- ESD protection exceeds 2000 V per MIL-STD-883, Method 3015, and 200 V using the machine model (C = 200 pF, R = 0).
- Wide operating voltage range of 2 V to 6 V.
- High-current outputs drive up to 15 LSTTL loads.
- 3-state outputs drive bus lines or buffer memory address registers.
- Low power consumption, with a maximum ICC of 80 μA.
- Typical propagation delay time (tpd) of 11 ns at 5 V.
- ±6 mA output drive at 5 V.
- Low input current of 1 μA max.
- RoHS and lead-free compliant.
Applications
- 3-state memory address drivers.
- Clock drivers.
- Bus-oriented receivers and transmitters.
- Automotive systems due to its AEC-Q100 qualification.
- General-purpose buffering and line driving in various digital systems).
Q & A
- What is the operating voltage range of the SN74HC244QPWRQ1?
The operating voltage range is from 2 V to 6 V).
- What is the maximum propagation delay time at 5 V?
The typical propagation delay time (tpd) at 5 V is 11 ns, with a maximum of 20 ns).
- How much current can the outputs drive?
The outputs can drive up to 15 LSTTL loads and provide ±6 mA output drive at 5 V).
- What is the ESD protection level of this device?
The ESD protection exceeds 2000 V per MIL-STD-883, Method 3015, and 200 V using the machine model (C = 200 pF, R = 0)).
- Is the SN74HC244QPWRQ1 qualified for automotive applications?
- What is the package type of the SN74HC244QPWRQ1?
The package type is 20-TSSOP).
- What is the maximum input current?
The maximum input current is 1 μA).
- Is the device RoHS and lead-free compliant?
- What are the typical applications of the SN74HC244QPWRQ1?
- How should the power supply be managed for this device?
