The 74HC244D is an octal buffer/line driver integrated circuit from Nexperia.
Key Specifications:
1. Type: Octal buffer/line driver
2. Logic Family: HC (High-Speed CMOS)
3. Supply Voltage (Vdd): 2V to 6V
4. Operating Temperature: -40°C to 125°C
5. Package: SO20 (SOT163), 20-pin
Features:
1. Eight buffers/drivers with 3-state outputs
2. High-speed operation: tpd = 10ns (typ) at 5V
3. Low power consumption: ICC = 1μA (typ) at 5V
4. High noise immunity: VNH = 2.4V (typ) at 5V
5. Compatible with TTL and CMOS logic
6. Symmetrical output impedance
7. 3-state outputs for bus-oriented applications
Applications:
1. Digital logic circuits
2. Data transmission and reception
3. Bus interfacing and expansion
4. Industrial control systems
5. Automotive electronics
6. Medical devices
7. Consumer electronics
Electrical Characteristics:
1. Propagation Delay (tpd): 10ns (typ) at 5V
2. Power Dissipation (Pd): 1μW (typ) at 5V
3. Input Current (Iin): 1μA (typ) at 5V
4. Output Current (Iout): 4mA (min) at 5V
5. Output Voltage (Vout): 0.5V to 5.5V
Standards Compliance:
1. IEC 60950-1 (Safety Requirements)
2. UL 94V-0 (Flammability Rating)
3. RoHS compliant
Dimensions:
1. Length: 12.8mm (0.504in)
2. Width: 7.5mm (0.295in)
3. Height: 2.45mm (0.096in)
4. Pitch: 1.27mm (0.05in)
Datasheet:
For detailed specifications, please refer to the Nexperia 74HC244D datasheet.
Ordering Information:
To order or replace this IC, ensure you have the following information:
1. Part number (74HC244D)
2. Quantity required
You can purchase Nexperia ICs from authorized distributors, such as:
- Diode House
Equivalent Parts:
Some equivalent parts from other manufacturers are:
- Texas Instruments SN74HC244D
- ON Semiconductor MC74HC244D
- STMicroelectronics 74HC244D
Pin Configuration:
| Pin | Function |
| --- | --- |
| 1 | 1A |
| 2 | 1Y |
| 3 | 2A |
| 4 | 2Y |
| 5 | 3A |
| 6 | 3Y |
| 7 | 4A |
| 8 | 4Y |
| 9 | 5A |
| 10 | 5Y |
| 11 | 6A |
| 12 | 6Y |
| 13 | 7A |
| 14 | 7Y |
| 15 | 8A |
| 16 | 8Y |
| 17 | OE |
| 18 | GND |
| 19 | Vdd |
| 20 | NC |
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