SN74LS124N1 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
SN74LS124N1 is a dual voltage-controlled oscillator IC with a nominal operating frequency of 12 MHz, supply voltage range of 4.5 V to 5.5 V, and control voltage up to 5 V. Housed in a 16-pin DIP through-hole package, it is used in clock generation and frequency synthesis circuits.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- SN74LS124N1 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74LS124N1?
- Dual voltage-controlled oscillator (VCO) with up to 12 MHz nominal output frequency
- Analog voltage control input allows precise frequency tuning from 0 V to 5 V
- Supply voltage range of 4.5 V to 5.5 V compatible with standard 5 V TTL logic
- Maximum supply current of 35 mA for low-power clock generation
- 16-pin DIP through-hole package for easy prototyping and breadboard use
- Drives TTL-compatible logic levels on frequency output pins
What is SN74LS124N1 used for?
SN74LS124N1 is used in digital clock generation circuits where the oscillation frequency must be tuned by an analog control voltage. It serves frequency synthesizers, signal generators, and clock multiplexing circuits in telecommunications and embedded systems prototypes. The through-hole DIP package makes it particularly suitable for legacy board repairs, educational labs, and prototype breadboard experiments.
What are the specifications of SN74LS124N1?
| YTEOL | 0 |
| Control Voltage-Max | 5V |
| Mounting Feature | THROUGH HOLE MOUNT |
| Operating Frequency-Nom | 12MHz |
| Oscillator Type | VOLTAGE CONTROLLED OSCILLATOR |
| Package Equivalence Code | DIP16,.3 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 35mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 4.5V |
| Supply Voltage-Nom | 5V |
| Surface Mount | NO |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SN74LS124N1 datasheet?
SN74LS124N1 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74LS124N1?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the nominal operating frequency of SN74LS124N1 and how is it controlled?
SN74LS124N1 operates at a nominal frequency of 12 MHz, and the output frequency is adjusted by applying an analog control voltage between 0 V and 5 V to the dedicated voltage control input. This voltage-to-frequency conversion makes it suitable for phase-locked loop circuits and frequency-agile clock generators in 5 V digital systems.
For a 5 V digital system prototype, what supply voltage range does SN74LS124N1 require?
SN74LS124N1 requires a supply voltage between 4.5 V and 5.5 V, which falls within the standard 5 V TTL supply tolerance. Its maximum supply current draw of 35 mA is compatible with typical 5 V linear regulators and on-board power rails found in most embedded development and prototype boards.
In which application scenarios is SN74LS124N1 a good fit compared to a fixed-frequency crystal oscillator?
SN74LS124N1 is preferred over a fixed crystal oscillator whenever the clock frequency must be swept or locked dynamically, as in PLL frequency synthesizers, spread-spectrum clocking modules, and analog-controlled timing circuits. Its dual VCO channels allow two independent voltage-tuned oscillators from a single 16-pin DIP package, reducing board component count for dual-clock systems.
Does SN74LS124N1 come in a surface-mount package, or is it through-hole only?
SN74LS124N1 is available only in the through-hole 16-pin DIP package with a 0.3 inch row spacing, making it compatible with standard breadboards and through-hole PCBs. For surface-mount designs requiring the same 74LS124 dual VCO function, engineers typically evaluate alternative package variants or modern replacement oscillator ICs in SOIC or TSSOP outlines.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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