CD74HC4538M Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
CD74HC4538M is a dual retriggerable precision monostable multivibrator from Texas Instruments in the HC CMOS logic family. Features two independent monostable circuits with separate trigger and reset inputs, operating with a 50 pF load capacitance. Available in 16-pin SOIC package with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HC4538M 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 independent retriggerable monostable multivibrators allow two separate pulse-generation circuits in a single IC
- HC CMOS logic family delivers high-speed operation with low power consumption across 2 V to 6 V supply range
- Retriggerable architecture allows pulse-width extension when input triggers arrive before the output pulse ends
- Separate active-high and active-low trigger inputs on each multivibrator provide flexible edge-triggered control
Applications
The CD74HC4538M is widely used for generating precise timing pulses in digital systems such as microcontroller debounce circuits, pulse stretching, and monostable delay generation. It is also applied in industrial automation for one-shot timing functions, missing-pulse detection, and frequency division in motor control and PLC systems.
Specifications
| YTEOL | 0 |
| 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) | 375ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 4.5V |
| 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 | 8542.39.00.60 |
| Country of Origin | Mexico |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD74HC4538M:
Frequently Asked Questions
What is the CD74HC4538M used for?
The CD74HC4538M is a dual retriggerable monostable multivibrator used to generate precise output pulses of controlled duration in response to input trigger events. Common uses include pulse stretching, debounce circuits, one-shot timers, and missing-pulse detection in digital logic systems.
What logic family does the CD74HC4538M belong to?
The CD74HC4538M belongs to the HC (High-Speed CMOS) logic family, which operates from a supply voltage of 2 V to 6 V. HC logic provides faster propagation delays and lower power consumption than original CMOS while maintaining compatibility with TTL input levels.
What package does the CD74HC4538M use?
The CD74HC4538M is available in a 16-pin SOIC (Small Outline Integrated Circuit) package with a JESD-30 code of R-PDSO-G16. This surface-mount package is compact and widely compatible with standard PCB assembly processes.
Can the CD74HC4538M be retriggered while the output pulse is active?
Yes, the CD74HC4538M is specifically designed as a retriggerable monostable, meaning that applying a new trigger pulse before the current output pulse ends will restart the timing cycle. This is useful for extending pulse width in applications such as watchdog timers and motor run-on circuits.
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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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