CD74HC123M Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
CD74HC123M is a dual retriggerable monostable multivibrator IC with reset, operating at high-speed CMOS logic levels. Features 2-bit configuration, 50pF load capacitance, and reset capability for precise pulse generation. From $0.38, in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HC123M Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3789(MOQ 1)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of CD74HC123M?
- Dual retriggerable monostable multivibrator with independent reset inputs for each channel
- High-speed CMOS HC/UH family logic with 50pF load capacitance support
- 2-bit configuration with 2 data/clock inputs for flexible timing circuit design
- Low output current (5.2mA) optimized for CMOS drive requirements
- Small Outline 16-pin (R-PDSO-G16) package for compact PCB footprint
What is CD74HC123M used for?
The CD74HC123M is widely used in digital timing and pulse-shaping circuits where precise, retriggerable one-shot pulses are required. It is commonly applied in industrial control systems, microcontroller interface logic, debounce circuits, and communication equipment for generating fixed-width pulse outputs. The dual-channel architecture and active-low reset make it ideal for sequencing, delay generation, and signal conditioning in both consumer electronics and embedded system designs.
What are the specifications of CD74HC123M?
| YTEOL | 0 |
| Additional Feature | RETRIGGERABLE |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | MONOSTABLE MULTIVIBRATOR |
| Max I(ol) | 0.0052A |
| Number of Bits | 2 |
| Number of Data/Clock Inputs | 2 |
| Number of Functions | 2 |
| Output Polarity | COMPLEMENTARY |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.08mA |
| Propagation Delay (tpd) | 480ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Mexico |
Where can I find the CD74HC123M datasheet?
CD74HC123M Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HC123M?
Compatible alternatives and drop-in replacements for CD74HC123M:
Frequently Asked Questions
What is the operating voltage range of the CD74HC123M?
The CD74HC123M operates over the standard HC-family supply voltage range of 2V to 6V, making it compatible with both 3.3V and 5V digital logic systems. This wide range allows flexible integration into modern embedded designs and legacy 5V systems alike.
How does the retriggerable feature of the CD74HC123M work?
The CD74HC123M is retriggerable, meaning a new trigger pulse applied before the current output pulse expires will restart the timing cycle from the beginning. This is useful in watchdog circuits and applications requiring pulse extension, where the output remains high as long as input triggers arrive within the programmed pulse width determined by an external RC network.
What external components are required to set the pulse width on the CD74HC123M?
Pulse width on the CD74HC123M is set by an external resistor (Rext) and capacitor (Cext) connected to the CX and REXT/CEXT pins. The pulse width formula is approximately tw = 0.7 × Rext × Cext, allowing flexible timing from nanoseconds to seconds depending on selected component values.
What package options are available for the CD74HC123M?
The CD74HC123M is available in a 16-pin Small Outline Package (SOIC, R-PDSO-G16), suitable for surface-mount assembly. Texas Instruments also offers this function in other package variants such as PDIP for through-hole applications. The SOIC package meets JESD-30 and JESD-609 e4 (RoHS-compliant) standards.
Can the CD74HC123M replace older TTL monostable multivibrators like the 74123?
Yes, the CD74HC123M is a CMOS high-speed equivalent of the classic 74123 TTL dual monostable multivibrator and is pin-compatible in most designs. It offers lower power consumption, wider supply voltage range, and improved noise immunity compared to standard TTL versions, making it a direct drop-in upgrade for most 5V digital circuit applications.
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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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.9093 | $0.91 |
| 6+ | $0.7578 | $4.55 |
| 10+ | $0.6240 | $6.24 |
| 40+ | $0.5950 | $23.80 |
| 87+ | $0.4200 | $36.54 |
| 472+ | $0.3789 | $178.84 |
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