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Product Detailed Parameters
- Description：IC FF D-TYPE DUAL 1BIT 14SOP
- Series：74AS
- Mfr：onsemi
- Package：Tape & Reel (TR)
- Function：Set(Preset) and Reset
- Type：D-Type
- Output Type：Complementary
- Number of Elements：2
- Number of Bits per Element：1
- Clock Frequency：105 MHz
- Max Propagation Delay @ V, Max CL：9ns @ 5V, 50pF
- Trigger Type：Positive Edge
- Current - Output High, Low：2mA, 20mA
- Voltage - Supply：4.5V ~ 5.5V
- Current - Quiescent (Iq)：16 mA
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：14-SOP
- Package / Case：14-SOIC (0.209", 5.30mm Width)
- Input Capacitance：-
- Grade：-
- Qualification：-
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Overview
The DM74AS74SJX is a dual D-type positive edge-triggered flip-flop manufactured by onsemi. It features asynchronous clear and set inputs with complementary outputs. The device operates within a supply voltage range of 4.5V to 5.5V and supports a clock frequency up to 80 MHz. It is housed in a 14-SOIC package (0.209 inch, 5.30mm width) designed for surface-mount installation. The component functions reliably across an operating temperature range of 0°C to 70°C.
Feature Summary
- Dual D-type flip-flop configuration with positive edge triggering
- Asynchronous clear and set inputs for immediate state control
- Complementary Q and Q-bar outputs available per element
Applications
- High-speed digital data storage circuits
- Parallel-to-serial data conversion modules
- State machine implementation in logic systems
Procurement Notes
Verify component authenticity through authorized distributors as the part status may be obsolete. Confirm package dimensions match the 14-SOIC specification. Ensure supply voltage requirements align with system design constraints before integration. Check for RoHS compliance documentation if environmental regulations apply to the final assembly.
Selection Notes
Select this component for applications requiring dual independent D-type latching with fast switching speeds. The AS series offers higher performance than standard variants. Verify that the asynchronous control inputs meet timing requirements. Consider thermal dissipation capabilities within the specified temperature range during board layout.
Part Context
This device belongs to the 74AS logic family, known for advanced speed-performance-to-power-consumption ratios. It serves as a fundamental building block for sequential logic designs. The manufacturer provides EDA models and datasheets to support schematic capture and PCB layout processes for engineering teams.
Replacement Considerations
Direct substitutes include SN74AS74NSR from Texas Instruments. Verify pin compatibility and electrical characteristics before substitution.
