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Product Detailed Parameters
- Description:IC GATE NAND 2CH 4-INP 14SOIC
- Series:74AC
- Mfr:onsemi
- Package:Tape & Reel (TR),Cut Tape (CT)
- Logic Type:NAND Gate
- Number of Circuits:2
- Number of Inputs:4
- Features:-
- Voltage - Supply:2V ~ 6V
- Current - Quiescent (Max):2 µA
- Current - Output High, Low:24mA, 24mA
- Input Logic Level - Low:0.9V ~ 1.65V
- Input Logic Level - High:2.1V ~ 3.85V
- Max Propagation Delay @ V, Max CL:7ns @ 5V, 50pF
- Operating Temperature:-40°C ~ 85°C
- Mounting Type:Surface Mount
- Supplier Device Package:14-SOIC
- Package / Case:14-SOIC (0.154", 3.90mm Width)
- Grade:-
- Qualification:-
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Overview
The onsemi 74AC20SCX is a dual 4-input NAND gate housed in a 14-lead Small Outline Integrated Circuit (SOIC) package. It operates within a supply voltage range of 2.0V to 6.0V and supports an operating temperature from -40°C to +85°C. The device features outputs capable of sourcing and sinking 24mA, with quiescent supply current reduced by 50% compared to previous generations. Propagation delays are specified at 7.0ns maximum for low-to-high transitions and 8.0ns maximum for high-to-low transitions at 5.0V.
Feature Summary
- Contains two independent 4-input NAND logic gates
- Outputs provide 24mA source and sink current capability
- Quiescent supply current is reduced by 50%
- Lead-free packaging compliant with JEDEC standards
Applications
- General digital logic processing
- Signal gating and switching circuits
- Microprocessor interface logic
Procurement Notes
Verify the specific suffix 'SCX' corresponds to the SOIC package and tape/reel configuration as documented in the ordering information. Confirm that the component meets the lead-free requirements per JEDEC J-STD-020B. Ensure the supplier provides documentation matching the Fairchild Semiconductor datasheet revision 1.5.1 for accurate electrical parameter validation.
Selection Notes
Select this component when a dual 4-input NAND function is required in a surface-mount SOIC footprint. Consider the 2.0V to 6.0V operating range for compatibility with various logic families. Evaluate the 24mA output drive strength against load requirements. Verify thermal performance within the -40°C to +85°C ambient temperature range for the intended application environment.
Part Context
This part belongs to the 74AC series of high-speed CMOS logic devices originally developed by Fairchild Semiconductor. The AC series offers faster propagation delays than standard 74LS counterparts while maintaining lower power consumption. The SCX designation specifically identifies the 14-lead narrow SOIC package variant available in tape and reel format for automated assembly.
Replacement Considerations
Equivalent parts include the 74AC20SC from other manufacturers offering identical logic functions and pinouts. Verify package dimensions against JEDEC MS-012 standards for mechanical compatibility. Ensure electrical characteristics such as propagation delay and output current meet or exceed the original specifications.
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