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Product Detailed Parameters
- Description：IC FF D-TYPE SNGL 8BIT 20SOIC
- Series：74AS
- Mfr：Fairchild Semiconductor
- Package：Bulk
- Function：Standard
- Type：D-Type
- Output Type：Tri-State, Non-Inverted
- Number of Elements：1
- Number of Bits per Element：8
- Clock Frequency：80 MHz
- Max Propagation Delay @ V, Max CL：9ns @ 5V, 50pF
- Trigger Type：Positive Edge
- Current - Output High, Low：15mA, 48mA
- Voltage - Supply：4.5V ~ 5.5V
- Current - Quiescent (Iq)：116 mA
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：20-SOIC
- Package / Case：20-SOIC (0.295", 7.50mm Width)
- Input Capacitance：-
- Grade：-
- Qualification：-
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Overview
The DM74AS574WMX is an octal D-type edge-triggered flip-flop manufactured by Fairchild Semiconductor. It features eight independent D-type flip-flops with three-state outputs, housed in a 20-SOIC package. The device operates within a supply voltage range of 4.5V to 5.5V and supports a commercial temperature range of 0°C to 70°C. Key electrical specifications include a propagation delay of 10ns and output drive capabilities of 24mA for both sourcing and sinking currents.
Feature Summary
- Contains eight edge-triggered D-type flip-flops for parallel data storage
- Provides three-state outputs suitable for bus-oriented applications
- Utilizes Advanced Schottky technology for high-speed switching performance
Applications
- Parallel data storage in microprocessor systems
- Input/output port buffering for computer architectures
- Bus-oriented data transmission interfaces
Procurement Notes
Verify the manufacturer origin as Fairchild Semiconductor or its successor entities like onsemi, as production rights may have transferred. Confirm the specific suffix 'WMX' corresponds to the tape-and-reel packaging format required for automated assembly processes. Ensure the component meets the necessary RoHS compliance standards applicable to your region and final product regulations.
Selection Notes
Select this component when designing systems requiring octal latching with high-speed performance characteristics defined by the AS logic family. Consider the 20-SOIC package dimensions for PCB layout constraints. Evaluate the 24mA output drive strength against the load requirements of the connected circuitry to ensure signal integrity during transitions.
Part Context
This part belongs to the DM74AS series, representing Advanced Schottky TTL logic. It serves as a registered version of bus transceivers, distinct from simple buffers. The device complements other AS-series components like the DM74AS244 bus driver, providing storage functionality alongside transmission capabilities in complex digital logic designs.
Replacement Considerations
The SN74AS574DWR from Texas Instruments offers functional equivalence with identical pinouts and specifications. Verify that the substitute maintains the same 20-SOIC package profile and electrical parameters before integration into existing hardware designs.
