CD54HC125F3A Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The CD54HC125F3A is a high-speed CMOS quad bus buffer with three-state outputs in a 14-pin ceramic DIP package. Features four independent buffers with active-low output enables, 50 pF load capacitance, and -55 to 125°C operating range. From $0.50 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- CD54HC125F3A 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
- Quad three-state buffers with active-low enable for flexible bus control
- High-speed CMOS HC/UH family with 50 pF load capacitance support
- Extended military-grade temperature range: -55°C to +125°C
- Ceramic DIP-14 package (CDIP) for high-reliability applications
Applications
The CD54HC125F3A is ideal for data bus buffering and line driving in military, aerospace, and industrial control systems requiring extended temperature performance. It suits applications where high-reliability ceramic packaging is mandated, such as avionics and defense electronics. The three-state outputs enable shared bus architectures in ruggedized embedded systems.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | DUMMY VAL |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | HC/UH |
| JESD-30 Code | R-GDIP-T14 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.006A |
| Number of Bits | 1 |
| Number of Functions | 4 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.08mA |
| Prop. Delay@Nom-Sup | 30ns |
| Propagation Delay (tpd) | 150ns |
| Qualification Status | Not Qualified |
| Screening Level | 38535Q/M;38534H;883B |
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD54HC125F3A:
Frequently Asked Questions
What is the operating temperature range of the CD54HC125F3A?
The CD54HC125F3A operates over a full military-grade temperature range of -55°C to +125°C, making it suitable for harsh environment applications in aerospace and defense systems where standard commercial-grade components would fail.
How many buffers does the CD54HC125F3A contain and how are they controlled?
The CD54HC125F3A contains four independent three-state buffers. Each buffer is individually controlled by an active-low output enable (OE) pin, allowing flexible bus management. When any OE pin is high, the corresponding buffer output enters a high-impedance state.
What package does the CD54HC125F3A use and why is it significant?
The CD54HC125F3A uses a 14-pin ceramic dual in-line package (CDIP), which provides superior hermeticity and reliability compared to plastic packages. This ceramic construction meets MIL-spec requirements and is preferred for long-life, high-reliability applications in military and space environments.
What is the load capacitance specification for the CD54HC125F3A?
The CD54HC125F3A is characterized with a load capacitance (CL) of 50 pF per output, which is the standard test condition used to specify propagation delay and output drive capability for this high-speed CMOS logic device.
What are common replacements or alternatives for the CD54HC125F3A?
Common alternatives include the SN74HC125 series in plastic packages for commercial use, or the CD74HC125E for a ceramic DIP variant. For drop-in military replacements with similar performance, look for 74HC125 devices from other vendors rated to -55°C to +125°C with compatible pinouts.
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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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