CD74HC125E Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
CD74HC125E is a High Speed CMOS Logic Quad Buffer IC with 3-State outputs, featuring 4 independent buffers with active-low output-enable controls. Operating at 2V to 6V supply voltage with propagation delay as low as 8ns at 5V. From $0.182, in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC125E Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1820(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 CD74HC125E?
- Quad 3-State Buffer: 4 independent buffers with active-low output-enable (OE) pins for flexible bus control
- High-Speed CMOS: Propagation delay as low as 8ns at 5V, 50pF load — ideal for high-frequency digital designs
- Wide Supply Range: Operates from 2V to 6V, fully compatible with TTL, CMOS, and LVTTL logic levels
- Low Power Consumption: Quiescent current typically <80μA, offering significant power savings vs bipolar alternatives
- Standard DIP-14 Package: CD74HC125E in through-hole PDIP-14 for easy prototyping and legacy board integration
What is CD74HC125E used for?
The CD74HC125E is widely used in microcontroller and FPGA bus interfacing to isolate and drive multiple devices on a shared data bus without signal contention. Its 3-state outputs make it ideal for bidirectional bus expansion in embedded systems, industrial controllers, and communication equipment. It is also commonly deployed in signal routing, data multiplexing, and level-shifting applications where a clean, high-impedance off-state is required.
What are the specifications of CD74HC125E?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | DUMMY VAL |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | HC/UH |
| JESD-30 Code | R-PDIP-T14 |
| JESD-609 Code | e4 |
| 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 | PLASTIC/EPOXY |
| Package Equivalence Code | DIP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.16mA |
| Prop. Delay@Nom-Sup | 30ns |
| Propagation Delay (tpd) | 150ns |
| Qualification Status | Not Qualified |
| Screening Level | AEC-Q100 |
| 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 |
| 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 |
Where can I find the CD74HC125E datasheet?
CD74HC125E Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HC125E?
Compatible alternatives and drop-in replacements for CD74HC125E:
Frequently Asked Questions
What is the operating voltage range of the CD74HC125E?
The CD74HC125E operates over a supply voltage (VCC) range of 2V to 6V, making it compatible with 3.3V and 5V systems. At 5V with a 50pF load capacitance, the typical propagation delay (tpd) is approximately 8ns, and at 3.3V it rises to about 13ns.
How does the 3-state output control work on the CD74HC125E?
Each of the four buffer channels has a dedicated active-low Output Enable (OE) pin. When OE is pulled LOW, the output follows the input logic level. When OE is HIGH, the output is forced into a high-impedance (Hi-Z) state, effectively disconnecting the buffer from the bus. This allows multiple devices to share the same bus lines without signal conflict.
What are common applications for the CD74HC125E?
The CD74HC125E is commonly used in bus buffering and isolation for microcontrollers, FPGAs, and microprocessors. Typical applications include data bus expansion, address bus driving, I/O port isolation, signal level shifting between 3.3V and 5V systems, and multiplexing multiple devices onto a shared communication line in industrial and consumer electronics.
Is the CD74HC125E pin-compatible with 74LS125 and 74HCT125?
Yes, the CD74HC125E is functionally and pin-compatible with the standard 74LS125 and 74HCT125 quad 3-state buffer ICs in the 14-pin DIP package. However, note that the HC family has higher input impedance and lower drive current than the LS family. For direct TTL-to-HC interfacing at 5V, the HCT variant (CD74HCT125E) may be preferred due to its TTL-compatible input thresholds.
Where can I buy the CD74HC125E and what is the typical price?
The CD74HC125E is available through major electronics distributors including Digi-Key, Mouser, and Arrow, typically priced around $0.18 per unit at low quantities. FindMyChip aggregates real-time stock and pricing from multiple distributors, enabling quick quote requests and worldwide shipping for both sample quantities and bulk orders.
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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.
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| 1+ | $0.2730 | $0.27 |
| 19+ | $0.2275 | $4.32 |
| 45+ | $0.1820 | $8.19 |
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