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MC74HC244AFG
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Product Detailed Parameters
- Description：IC BUF NON-INVERT 6V SOEIAJ-20
- Series：74HC
- Mfr：onsemi
- 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：7.8mA, 7.8mA
- Voltage - Supply：2V ~ 6V
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-SOIC (0.209", 5.30mm Width)
- Supplier Device Package：SOEIAJ-20
- Grade：-
- Qualification：-
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Overview
The MC74HC244AFG is an octal buffer and line driver manufactured by onsemi, belonging to the HC logic series. It features eight non-inverting channels with three-state outputs housed in a 20-pin SOIC package. The device operates within a supply voltage range of 2V to 6V. Key electrical parameters include a maximum propagation delay of 96ns at 2V and 15ns at 6V, with output drive capabilities of -7.8mA for high-level and 7.8mA for low-level states. It supports an operating temperature range from -55°C to +125°C.
Feature Summary
- Provides eight independent non-inverting signal paths for bus buffering applications
- Features three-state outputs to facilitate direct connection to bus lines without external drivers
- Operates across a wide industrial temperature range for reliable performance in harsh environments
Applications
- Memory address decoding circuits
- Clock distribution buffers
- Bus-oriented transmissions
Procurement Notes
Verify the specific suffix 'FG' against official manufacturer documentation to confirm pinout and package dimensions. Ensure compatibility with existing PCB footprints and verify that the HC logic family meets the system's voltage and speed requirements before procurement.
Selection Notes
Select this component when designing systems requiring octal buffering with three-state control. Consider the HC series characteristics regarding input capacitance and propagation delay relative to the target clock frequency. Verify that the 20-pin SOIC package fits the available board space and thermal constraints.
Part Context
This part belongs to the MC74HC244A family of octal buffers. Similar variants include the MC74HC244ADWG and MM74HC244WM, which share functional similarities but may differ in packaging or specific electrical tolerances. The HC series represents standard CMOS technology suitable for general-purpose digital logic applications.
Replacement Considerations
Check for cross-reference parts such as MC74HC244ADWG or MM74HC244WM. Confirm that any substitute maintains the same 20-pin SOIC footprint and compatible logic levels.
