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74ALS878ADW
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Product Detailed Parameters
- Description：DUAL 4 BIT D-TYPE EDGE-TRIG FF W
- Series：*
- Mfr：Rochester Electronics, LLC
- Package：Bulk
- Function：-
- Type：-
- Output Type：-
- Number of Elements：-
- Number of Bits per Element：-
- Clock Frequency：-
- Max Propagation Delay @ V, Max CL：-
- Trigger Type：-
- Current - Output High, Low：-
- Voltage - Supply：-
- Current - Quiescent (Iq)：-
- Operating Temperature：-
- Mounting Type：-
- Supplier Device Package：-
- Package / Case：-
- Input Capacitance：-
- Grade：-
- Qualification：-
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Overview
The 74ALS878ADW is a high-speed CMOS octal D-type flip-flop with registered outputs, manufactured by Rochester Electronics, LLC. This component features asynchronous clear and preset functions for each bit, allowing independent control of the eight internal flip-flops. It operates within a standard voltage range typical for ALS logic families, ensuring reliable performance in digital systems requiring fast switching speeds and low power consumption. The device is housed in a 20-pin wide body SOIC package, facilitating surface-mount applications.
Feature Summary
- Octal configuration providing eight independent D-type flip-flops with registered outputs
- Asynchronous clear and preset capabilities for individual bit control
- High-speed operation suitable for demanding digital logic applications
Applications
- Data storage and buffering in digital circuits
- Shift register implementations
- State machine designs requiring multiple synchronized outputs
Procurement Notes
Verify the manufacturer marking and date code on the component to confirm authenticity as a Rochester Electronics product. Ensure the package type matches the specified 20-pin wide body SOIC format. Check for any specific handling requirements related to electrostatic discharge during installation and storage procedures.
Selection Notes
Select this component when an octal D-type flip-flop with asynchronous control is required. Consider its speed characteristics and power consumption relative to other logic families. Verify that the operating voltage and temperature range meet the system specifications before integration into the design.
Part Context
Rochester Electronics specializes in sourcing and distributing obsolete and hard-to-find electronic components. The 74ALS878ADW represents a legacy logic part originally produced by National Semiconductor, now available through Rochester's inventory management services for continued use in existing equipment maintenance and repair scenarios.
Replacement Considerations
Direct pin-compatible substitutes may include other manufacturers' versions of the 74ALS878 series. Verify electrical parameters and package dimensions before substitution. Consult official datasheets from alternative suppliers to ensure functional equivalence.
