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Product Detailed Parameters
- Description：IC GATE NAND PQCC20
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Logic Type：-
- Number of Circuits：-
- Number of Inputs：-
- Features：-
- Voltage - Supply：-
- Current - Quiescent (Max)：-
- Current - Output High, Low：-
- Input Logic Level - Low：-
- Input Logic Level - High：-
- Max Propagation Delay @ V, Max CL：-
- Operating Temperature：-
- Mounting Type：-
- Supplier Device Package：-
- Package / Case：-
- Grade：-
- Qualification：-
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Overview
The SN74ALS20AFN is a dual 4-input positive-NAND gate from the Texas Instruments ALS logic family. It utilizes bipolar technology with push-pull outputs and operates within a supply voltage range of 4.5V to 5.5V. The device features high-speed performance with propagation delays typically between 10ns and 50ns, supporting data rates up to 75Mbps. It is housed in a 20-lead Plastic Quad Flat Package (PQCC) and functions reliably across an operating temperature range of 0°C to 70°C.
Feature Summary
- Dual independent 4-input NAND logic gates
- High-speed ALS bipolar technology
- Push-pull output configuration
Applications
- Digital logic circuit design
- Signal processing systems
- Microprocessor interface circuits
Procurement Notes
Verify the specific package suffix 'FN' corresponds to the 20-lead PQCC format when sourcing. Confirm RoHS compliance status as availability varies by manufacturing batch. Ensure the supplier provides official datasheets for the SN74ALS20A series to validate electrical characteristics against system requirements.
Selection Notes
Select this component for applications requiring fast switching speeds and low power consumption compared to standard TTL. The dual 4-input configuration reduces board space compared to single-gate alternatives. Verify that the 5V supply tolerance and bipolar input types match the driving source capabilities.
Part Context
This part belongs to the SN74ALS20A series, which includes variants such as SN74ALS20AN and SN74ALS20ANSR. These devices share identical logical functionality but differ in packaging options like PDIP, SOIC, and PQCC to suit different assembly methods.
Replacement Considerations
Compatible substitutes include SN74ALS20AN and SN74ALS20ANSR. These parts offer identical logical operations and pinouts, differing primarily in physical package style.
