Texas Instruments CD74HC244EE4
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $2.03 | $2.03 |
| 15+ | $0.47 | $7.05 |
| 25+ | $0.46 | $11.50 |
| 50+ | $0.43 | $21.50 |
| 100+ | $0.38 | $38.00 |
| N+ | $0.08 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | 74HC |
| Packaging | Tube | |
| Part Status | Active |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 2 |
| Number of Bits per Element | 4 |
| Input Type | - |
| Output Type | 3-State |
| Current - Output High, Low | 7.8mA, 7.8mA |
| Voltage - Supply | 2V ~ 6V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | 20-DIP (0.300", 7.62mm) |
| Supplier Device Package | 20-PDIP |
| ROHS |  |
The CD74HC244EE4 from Texas Instruments is a high-speed CMOS octal buffer featuring non-inverting outputs with 3-state capability. Operating from a 2V to 6V supply, it provides excellent compatibility with both TTL and CMOS logic levels. Each of its eight channels can source or sink 7.8mA, making it ideal for driving buses, LEDs, or multiple logic inputs. Housed in a robust 20-pin DIP package, this buffer is a versatile solution for signal conditioning, level translation, and bus isolation in a wide range of digital systems.
- Wide 2V to 6V Supply Range: Ensures compatibility with 3.3V and 5V logic systems, simplifying mixed-voltage design.
- 3-State Outputs: Allows for direct connection to shared data buses, preventing signal contention.
- High Drive Current (7.8mA): Capable of driving LEDs, relays, and multiple TTL loads without additional circuitry.
- Extended Temperature Range (-55°C to 125°C): Suitable for demanding industrial and automotive applications.
8-Bit Bus Buffering
The CD74HC244EE4 is ideal for buffering 8-bit data or address buses. Its 3-State outputs allow it to be easily isolated from the bus, enabling multiple memory or I/O devices to share the same lines.
Memory Address Line Driving
In microprocessor systems, this buffer can drive the address lines to multiple memory chips, providing the necessary fan-out and drive strength to ensure reliable addressing.
Signal Buffering for High-Fanout Applications
When a logic signal needs to drive multiple inputs, this buffer provides the necessary current and drive strength. Its high-impedance inputs minimize loading on the source, while its outputs can drive several TTL loads.
Level Shifting Between 3.3V and 5V Systems
With a wide 2V to 6V supply range, this device can be used to shift logic levels. Operating at 5V, it can accept 3.3V inputs (with proper thresholds) and provide 5V output levels, or vice versa, simplifying mixed-voltage designs.
Driving LEDs and Relays
Each output can source or sink up to 7.8mA, which is sufficient to directly drive LEDs with a series resistor. It can also drive low-power relays or other inductive loads when a flyback diode is used.
Industrial Control and Automation
The wide operating temperature range (-55°C to 125°C) makes it suitable for harsh industrial environments. It can buffer sensor signals, control actuator drivers, and interface with PLCs in factory automation systems.
- Q: What logic family does the CD74HC244EE4 belong to?
- A: It belongs to the 74HC (High-Speed CMOS) logic family.
- Q: What is the function of this IC?
- A: It is an Octal Buffer with Non-Inverting outputs and 3-State output capability.
- Q: How many channels does it have?
- A: It has 8 buffer channels (often counted as 2 groups of 4).
- Q: What is the output type?
- A: The outputs are 3-State, allowing for connection to shared buses.
- Q: What is the operating voltage range?
- A: It operates from 2V to 6V, making it compatible with TTL, 3.3V, and 5V systems.
- Q: What package is available?
- A: It comes in a 20-pin DIP (0.300", 7.62mm) package.
CD74HC244EE4.pdf
- Q: What logic family does the CD74HC244EE4 belong to?
- A: It belongs to the 74HC (High-Speed CMOS) logic family.
- Q: What is the function of this IC?
- A: It is an Octal Buffer with Non-Inverting outputs and 3-State output capability.
- Q: How many channels does it have?
- A: It has 8 buffer channels (often counted as 2 groups of 4).
- Q: What is the output type?
- A: The outputs are 3-State, allowing for connection to shared buses.
- Q: What is the operating voltage range?
- A: It operates from 2V to 6V, making it compatible with TTL, 3.3V, and 5V systems.
- Q: What package is available?
- A: It comes in a 20-pin DIP (0.300", 7.62mm) package.
