CD54HC4538F Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
CD54HC4538F is a dual precision monostable multivibrator from Texas Instruments in the HC/UH logic family, housed in a 16-pin ceramic DIP package with a load capacitance of 50 pF and a maximum output low current of 5.2 mA. It provides two independent retriggerable one-shot pulse generators, each with separate trigger and reset inputs for flexible timing control. Available through authorized distributors with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD54HC4538F 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
What are the key features of CD54HC4538F?
- Dual independent monostable multivibrator channels with separate trigger and reset inputs enabling flexible one-shot pulse generation in a single 16-pin package
- HC-family CMOS logic operating with 50 pF load capacitance and maximum I(ol) of 5.2 mA for reliable digital timing in mixed-logic systems
- Ceramic dual-in-line 16-pin (CDIP) package providing hermetic protection for reliable operation in industrial and military temperature environments
What is CD54HC4538F used for?
The CD54HC4538F is used in digital timing and pulse generation circuits for industrial control systems, military electronics, and test equipment where precise one-shot pulse widths must be set using external RC networks. Its dual-channel design allows two independent timing functions to be implemented in a single IC, making it suitable for edge detection, debouncing, and sequencing circuits in embedded control applications. Engineers also deploy it in signal conditioning circuits where retriggerable monostable behavior is needed to extend or reshape digital pulses with tight timing tolerances.
What are the specifications of CD54HC4538F?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Family | HC/UH |
| JESD-30 Code | R-GDIP-T16 |
| JESD-609 Code | e0 |
| 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 | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.16mA |
| 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 | NO |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Ceramic Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the CD54HC4538F datasheet?
CD54HC4538F Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD54HC4538F?
Compatible alternatives and drop-in replacements for CD54HC4538F:
Frequently Asked Questions
How many independent timing channels does the CD54HC4538F provide, and how are pulse widths configured?
The CD54HC4538F contains 2 independent monostable multivibrator channels, each with its own trigger, reset, and RC timing inputs. The output pulse width is set by an external resistor and capacitor connected to each channel's RC pins, allowing pulse widths from nanoseconds to seconds to be dialed in independently for each of the 2 timing functions within the same 16-pin package.
What is the load capacitance rating of the CD54HC4538F, and how does this affect driving logic inputs?
The CD54HC4538F is characterized with a load capacitance of 50 pF, which defines the capacitive load each output can drive while meeting the specified timing and output drive parameters. With a maximum output low current of 5.2 mA, it can reliably drive standard HC-family logic inputs and short PCB trace lengths without significant propagation delay degradation in digital timing and sequencing circuits.
When is the ceramic DIP package of the CD54HC4538F preferred over plastic-packaged alternatives for monostable applications?
The ceramic DIP package of the CD54HC4538F is preferred in military avionics, space-ground-support equipment, and industrial systems operating across the full -55°C to +125°C temperature range, where plastic packages risk moisture ingress and delamination over time. The hermetic ceramic construction ensures the 2-channel monostable multivibrator maintains its timing accuracy and logic drive capability across thousands of thermal cycles in harsh field environments.
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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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