CD74HC123E Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The CD74HC123E is a dual retriggerable monostable multivibrator with reset, featuring high-speed CMOS logic in a 16-pin DIP package. It supports 50 pF load capacitance and operates at 2V to 6V supply voltage. Available worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC123E Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual retriggerable monostable multivibrator with independent resets for each channel
- High-speed CMOS HC/UH family with 50 pF load capacitance and wide 2V to 6V supply range
- 16-pin PDIP through-hole package enabling straightforward PCB integration and prototyping
Applications
The CD74HC123E is used in digital timing circuits requiring precise pulse generation, such as switch debouncing, clock stretching, and one-shot pulse generation in industrial control systems. Its dual-channel design with retriggerable inputs and reset capability makes it suitable for sequential logic circuits in communication equipment and embedded systems. The wide supply voltage range of 2 V to 6 V allows it to interface across mixed-logic designs in consumer electronics and test instrumentation.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | RETRIGGERABLE |
| Family | HC/UH |
| JESD-30 Code | R-PDIP-T16 |
| 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 | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| 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) | 4.5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| ## CD74HC123E Alternates Showing results | Image |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia, Mexico |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD74HC123E:
Frequently Asked Questions
What supply voltage range does the CD74HC123E support, and how does this affect mixed-logic system integration?
The CD74HC123E operates across a 2 V to 6 V supply voltage range, making it compatible with both 3.3 V and 5 V logic families. This wide range allows designers to use it in mixed-voltage systems without level-shifting circuitry, reducing component count in industrial control and embedded designs.
How does the retriggerable input of the CD74HC123E extend pulse width in debouncing applications?
Each monostable channel on the CD74HC123E can be retriggered while the output pulse is still active, effectively restarting the timing cycle on each new edge. This behavior extends the output pulse width proportionally to the bounce duration, making it ideal for switch debouncing with 50 pF load capacitance and timing set by an external RC network.
When is the CD74HC123E a practical alternative to a microcontroller timer in a pulse-generation circuit?
The CD74HC123E generates one-shot pulses deterministically without software overhead, making it preferable to a microcontroller timer when latency must stay below 1 µs or when the MCU is already fully utilized. It is a 16-pin DIP device handling 2 independent timing channels, each with a reset, at supply voltages from 2 V to 6 V—requiring no firmware and minimal external components.
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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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