ChipApex | Global Electronic Components Supplier
CD74HCT244E
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC BUF NON-INVERT 5.5V 20DIP
- Series：74HCT
- Mfr：Texas Instruments
- Package：Tube
- 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：6mA, 6mA
- Voltage - Supply：4.5V ~ 5.5V
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Through Hole
- Package / Case：20-DIP (0.300", 7.62mm)
- Supplier Device Package：20-PDIP
- Grade：-
- Qualification：-
Download product information
Overview
The CD74HCT244E is an octal buffer and line driver manufactured by Texas Instruments, utilizing high-speed CMOS logic technology. It features three-state outputs and operates within a supply voltage range of 4.5 V to 5.5 V. The device provides typical propagation delays of 13 ns at 5 V, with output drive capabilities of ±6 mA. It is housed in a 20-pin PDIP package and supports through-hole mounting.
Feature Summary
- High-speed CMOS logic construction for efficient signal buffering
- Three-state outputs enable direct connection to bus lines
- TTL-compatible input voltage levels ensure broad interface compatibility
Applications
- Memory address drivers
- Clock drivers
- Bus-oriented receivers and transmitters
Procurement Notes
Verify the specific suffix 'E' corresponds to the PDIP-20 package configuration. Confirm RoHS compliance status via the official datasheet. Ensure the design accommodates the 4.5 V to 5.5 V operating voltage range and check for any pinout variations in legacy documentation.
Selection Notes
Select this component when TTL-compatible inputs are required alongside high-speed CMOS performance. The octal configuration reduces board space compared to multiple quad buffers. Verify that the 6 mA output current meets the load requirements for the connected bus or memory devices.
Part Context
This part belongs to the SN74HCT244 family of octal buffers. It shares functional similarities with other HCT series devices but offers eight channels in a single package. The HCT technology bridges the gap between standard CMOS and TTL logic families.
Replacement Considerations
SN74HCT244DW (SOIC-20 package)
FAQ
What is the input voltage compatibility of the CD74HCT244E?
The device features TTL-compatible input voltage levels, allowing it to interface directly with TTL logic systems.
How does the three-state output function operate?
When the output enable (OE) input is low, data passes from input to output. When OE is high, the outputs enter a high-impedance state, isolating them from the bus.
