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MC74HC240AFG
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Product Detailed Parameters
- Description：IC BUFFER INVERT 6V SOEIAJ-20
- Series：74HC
- Mfr：onsemi
- Package：Tube,Tube
- Logic Type：Buffer, 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 MC74HC240AFG is an octal 3-state inverting buffer and line driver manufactured by onsemi. It operates within a supply voltage range of 2.0 V to 6.0 V. The device features two active-low output enables and provides high noise immunity characteristic of CMOS devices. It is designed for use with 3-state memory address drivers, clock drivers, and other sub-oriented systems. The component has a chip complexity of 120 FETs or 30 equivalent gates.
Feature Summary
- Octal 3-state inverting buffer/line driver functionality
- Compatible with standard CMOS outputs and LSTTL outputs with pullup resistors
- High noise immunity characteristic of CMOS devices
- Two active-low output enables
Applications
- 3-state memory address drivers
- Clock drivers
- Sub-oriented systems
Procurement Notes
Verify the specific package suffix 'FG' against official ordering information, as the datasheet lists DWG (SOIC-20) and DTG (TSSOP-20). Confirm RoHS compliance and Pb-free status. Ensure the application environment meets the recommended operating temperature range of -55°C to +125°C. Validate input compatibility requirements if interfacing with LSTTL outputs.
Selection Notes
Select this component for applications requiring octal buffering with inverting logic and 3-state control. It serves as a pinout-compatible alternative to LS240 devices. Consider the 2.0 V to 6.0 V operating voltage range when designing power supplies. Verify interface compatibility with downstream CMOS, NMOS, or TTL loads.
Part Context
This part belongs to the HC240A series of high-performance silicon-gate CMOS logic integrated circuits from onsemi. It is functionally similar to the HC244A but differs in output polarity. The series is designed for general-purpose digital buffering and driving applications within standard industrial and commercial temperature ranges.
Replacement Considerations
The datasheet notes functional similarity to the HC244A. Direct substitutes include other octal 3-state inverters from compatible logic families such as SN74HC240.
