SN74LV123APWIn StockTexas Instruments
SN74LV123APW is a dual retriggerable monostable multivibrator (one-shot) IC by Texas Instruments, operating from 1.65V to 5.5V supply. Key specs: dual independent one-shot channels, active-low and active-high trigger inputs, external RC timing control. From $0.1972, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Price
- From $0.1972(MOQ 90)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual independent retriggerable monostable multivibrator channels for flexible pulse generation
- Wide supply voltage range of 1.65V to 5.5V for compatibility with 1.8V, 3.3V, and 5V systems
- Active-low reset input on each channel for immediate output termination
- External RC network sets pulse width from nanoseconds to seconds
- TSSOP-16 (PW) package enabling compact PCB designs
- Low-voltage CMOS technology with high-speed operation up to 100 MHz
Applications
SN74LV123APW is widely used in digital systems for generating precise timing pulses and debouncing mechanical switches in consumer electronics and industrial control equipment. It is also applied in microcontroller reset circuits, watchdog timer designs, and bus interface timing generation where reliable one-shot pulse control is required. Additionally, the device serves well in communication interfaces and signal conditioning circuits that need edge-triggered pulse stretching or delay generation.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the SN74LV123APW and what does it do?
The SN74LV123APW is a dual retriggerable monostable multivibrator (one-shot) IC from Texas Instruments. It generates a single output pulse of a defined duration each time a valid trigger edge is applied. Each of the two independent channels features both active-low and active-high trigger inputs, an active-low reset, and an external RC network to set the output pulse width from nanoseconds to several seconds.
What supply voltage range does the SN74LV123APW support?
The SN74LV123APW operates over a wide supply voltage range of 1.65V to 5.5V, making it compatible with modern 1.8V, 3.3V, and 5V logic systems. This flexibility allows direct interfacing with low-voltage microcontrollers, FPGAs, and legacy TTL-level circuits without additional level-shifting components.
How is the output pulse width set on the SN74LV123APW?
The output pulse width is determined by an external resistor (Rext) and capacitor (Cext) connected to the timing pins of each channel. The pulse width is approximately t = 0.45 × Rext × Cext. By selecting appropriate RC values, designers can set pulse widths ranging from a few nanoseconds up to several seconds, offering highly flexible timing control.
What are the typical applications for the SN74LV123APW?
Typical applications include switch debouncing, pulse stretching, watchdog timer circuits, microcontroller reset generation, and bus timing control. It is also used in signal conditioning, edge-to-pulse conversion, and any digital design requiring a retriggerable one-shot pulse with precise, externally programmable duration.
What package does the SN74LV123APW come in and where can I buy it?
The SN74LV123APW is housed in a 16-pin TSSOP (PW) package, which provides a compact, surface-mount footprint suitable for high-density PCB designs. It is available from FindMyChip starting at $0.1972 per unit, with global stock and worldwide shipping for fast procurement.
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Why Buy from FindMyChip
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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 90+ | $0.6240 | $56.16 |
| 180+ | $0.5923 | $106.62 |
| 270+ | $0.5765 | $155.66 |
| 940+ | $0.2133 | $200.50 |
| 1220+ | $0.2053 | $250.47 |
| 1525+ | $0.1972 | $300.73 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
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