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SN74LS21NG4 is listed in the Inverter Gates range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC GATE AND 2CH 4-INP 14DIP. Review the specifications below when checking this part for your BOM.
Inverter Gates specifications for SN74LS21NG4
- Description：IC GATE AND 2CH 4-INP 14DIP
- Series：74LS
- Mfr：Texas Instruments
- Package：Tube
- Logic Type：AND Gate
- Number of Circuits：2
- Number of Inputs：4
- Features：-
- Voltage - Supply：4.75V ~ 5.25V
- Current - Quiescent (Max)：-
- Current - Output High, Low：400µA, 8mA
- Input Logic Level - Low：0.8V
- Input Logic Level - High：2V
- Max Propagation Delay @ V, Max CL：20ns @ 5V, 15pF
- Operating Temperature：0°C ~ 70°C
- Mounting Type：Through Hole
- Supplier Device Package：14-PDIP
- Package / Case：14-DIP (0.300", 7.62mm)
- Grade：-
- Qualification：-
Inverter Gates datasheet and documents for SN74LS21NG4
Inverter Gates Overview
The SN74LS21NG4 is a dual 4-input positive-AND gate manufactured by Texas Instruments. It belongs to the 74LS (Low Power Schottky) TTL logic series and operates within a commercial temperature range of 0°C to 70°C. The device is housed in a 14-pin Plastic Dual In-Line Package (PDIP). Key electrical parameters include a propagation delay of 20 ns, a minimum supply voltage of 4.75 V, and a maximum supply voltage of 5.25 V.
Inverter Gates Feature Summary
- Contains two independent 4-input AND gates within a single package
- Utilizes Low Power Schottky (LS) technology for optimized power consumption and speed
- Compatible with standard 5V TTL logic systems
Inverter Gates Applications
- Digital logic circuit design
- Data processing systems
- Control logic implementation
Inverter Gates Procurement Notes
Verify that the component matches the specific SN74LS21NG4 designation, as suffixes can indicate variations in packaging or lead finish. Confirm the manufacturer origin, noting that Rochester Electronics may distribute this part. Ensure the PDIP-14 package type aligns with your board layout requirements before procurement.
Inverter Gates Selection Notes
Select this component when a dual 4-input AND function is required in a through-hole DIP format. It serves as a direct replacement for other 74LS21 variants in the same package. Consider the 20 ns propagation delay and 5V operating voltage constraints when designing the timing and power sections of the circuit.
Inverter Gates Part Context
This part is part of the broader 74LS family introduced by Texas Instruments in the 1970s. The 'N' suffix typically denotes the plastic DIP package, while 'G4' often indicates RoHS compliance and specific manufacturing attributes. It is distinct from surface-mount versions like the SN74LS21DR.
Inverter Gates Replacement Considerations
SN74LS21N
Inverter Gates FAQ
What is the logic family of the SN74LS21NG4?
It belongs to the 74LS (Low Power Schottky) TTL logic family.
How many inputs does each gate have?
Each of the two gates contains four inputs.
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