SN74AHCT123AD Texas Instruments In Stock
SN74AHCT123AD is a dual retriggerable monostable multivibrator by Texas Instruments, featuring AHCT logic with 5V-tolerant inputs and independent trigger/reset controls. Key specs: 2-channel, VCC 4.5–5.5V, propagation delay ~8ns. From $0.41, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Price
- From $0.4147(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74AHCT123AD?
- Dual retriggerable monostable multivibrator with independent A and B trigger inputs per channel
- AHCT logic family: 5V-tolerant inputs compatible with 3.3V and 5V systems
- Fast propagation delay (~8ns typical) enabling precise pulse generation
- Independent active-low clear (CLR) input for immediate output reset
- Wide supply voltage range: 4.5V to 5.5V for reliable industrial operation
What is SN74AHCT123AD used for?
The SN74AHCT123AD is widely used in digital timing circuits, pulse stretching, and debouncing applications where precise monostable pulses are required. It is ideal for microcontroller interfacing, bus arbitration, and power sequencing circuits in industrial control and communications equipment. Its 5V-tolerant AHCT inputs make it a versatile choice for mixed-voltage system designs.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
What are equivalent replacements for SN74AHCT123AD?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the SN74AHCT123AD and what does it do?
The SN74AHCT123AD is a dual retriggerable monostable multivibrator from Texas Instruments. It generates a single output pulse of a defined width in response to an input trigger. Each of the two independent channels has separate A/B trigger inputs and an active-low CLR reset, making it suitable for pulse generation, debouncing, and timing control applications.
What are the key electrical specifications of the SN74AHCT123AD?
The SN74AHCT123AD operates from a 4.5V to 5.5V supply voltage with 5V-tolerant inputs. It features a typical propagation delay of approximately 8ns, high-level output voltage (VOH) of at least 4.4V, and low-level output voltage (VOL) of 0.1V max. The device is packaged in a 16-pin SOIC (D) package.
Is the SN74AHCT123AD compatible with 3.3V logic systems?
Yes. The SN74AHCT123AD belongs to the AHCT logic family, which features 5V-tolerant inputs. This means its inputs can accept 3.3V logic signals while the device itself operates at 5V, making it an excellent interface component between 3.3V microcontrollers and 5V logic circuits.
What package does the SN74AHCT123AD come in and what are the alternatives?
The SN74AHCT123AD comes in a 16-pin SOIC (D) package with 1.27mm pitch, suitable for surface-mount assembly. Functionally equivalent alternatives include the SN74AHCT123APW (TSSOP-16 package) for tighter board layouts, or the SN74HC123A for 2V–6V operation if strict AHCT timing is not required.
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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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| 1+ | $1.0800 | $1.08 |
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| 1000+ | $0.5552 | $555.20 |
| 10000+ | $0.4950 | $4950.00 |
| 100000+ | $0.4147 | $41470.00 |
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