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Product Detailed Parameters
- Description：IC MULTIVIBRATOR 34NS 16SO
- Series：74LS
- Mfr：Texas Instruments
- Package：Tube
- Logic Type：Monostable
- Independent Circuits：2
- Schmitt Trigger Input：No
- Propagation Delay：34 ns
- Current - Output High, Low：400µA, 8mA
- Voltage - Supply：4.75 V ~ 5.25 V
- Operating Temperature：0°C ~ 70°C
- Mounting Type：Surface Mount
- Package / Case：16-SOIC (0.209", 5.30mm Width)
- Supplier Device Package：16-SO
- Grade：-
- Qualification：-
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Overview
The SN74LS123NS is a dual retriggerable monostable multivibrator from the Texas Instruments SN74LS series. It operates within a supply voltage range of 4.75 V to 5.25 V and features a maximum static current of 12 mA. The device provides two independent circuits in a 16-pin SOIC package, with a propagation delay of 56 ns at 5 V and a minimum pulse width of 40 ns. It supports low-level output currents up to 8 mA and functions reliably across an operating temperature range of 0°C to +70°C.
Feature Summary
- Dual retriggerable monostable multivibrator architecture
- Standard LS logic family compatibility
- Surface-mount SOIC-16 packaging
Applications
- Timing and delay generation
- Pulse width modulation
- Frequency division
Procurement Notes
Verify the specific suffix 'N' against official documentation to confirm pinout and package dimensions. Ensure the component meets required environmental standards for the intended application. Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity before procurement.
Selection Notes
Select this component when dual independent timing channels are required in a compact surface-mount form factor. The LS series offers standard speed suitable for general-purpose digital logic applications. Verify that the 5V supply requirement aligns with the system power design and that the 70°C thermal limit is sufficient for the operating environment.
Part Context
This device belongs to the SN74LS123 family of dual monostable multivibrators. It is designed for applications requiring precise timing control using external RC networks. The LS variant ensures compatibility with standard TTL logic levels while providing improved power consumption characteristics compared to earlier series generations.
Replacement Considerations
SN74LS123DR
FAQ
Is the SN74LS123NS retriggerable?
Yes, the SN74LS123NS is a retriggerable monostable multivibrator, allowing the output pulse width to be extended by subsequent trigger pulses during the timing interval.
What is the maximum supply voltage for this device?
The maximum operating supply voltage for the SN74LS123NS is 5.25 V.
