CD74HC251EG4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The CD74HC251EG4 is a high-speed CMOS 8-to-1 data selector and multiplexer from Texas Instruments, featuring three-state outputs, a complementary output pair, and operating from 2V to 6V supply in a DIP-16 package. It selects one of eight data inputs based on a 3-bit address with output enable control. Ideal for digital signal routing and data bus selection in CMOS designs.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC251EG4 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-to-1 data selector/multiplexer with 3-bit binary address for selecting one of 8 input channels
- Three-state outputs with active-LOW output enable for bus-sharing configurations
- Complementary Y and Y-bar outputs for both true and inverted signal routing
- HC/UH CMOS family operating from 2V to 6V VCC for broad supply compatibility
- 16-pin DIP package for through-hole PCB assembly and breadboard prototyping
- Wide operating temperature range for industrial and embedded system applications
Applications
The CD74HC251EG4 is used in digital data bus multiplexing, microprocessor data selection, memory bank switching, and signal routing in embedded control systems and industrial digital logic boards. It is also applied in function generation circuits, data compression logic, and communication systems where selecting one of eight data channels under binary address control is required.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many input channels can the CD74HC251EG4 select from?
The CD74HC251EG4 is an 8-to-1 multiplexer that can select from eight independent data input channels. A 3-bit binary address (A, B, C inputs) determines which of the eight inputs is routed to the Y output, while a strobe/enable input controls whether the output is active or in the high-impedance state.
Does the CD74HC251EG4 have complementary outputs?
Yes, the CD74HC251EG4 provides both Y (non-inverted) and Y-bar (inverted/complementary) three-state outputs, allowing the selected input signal to be simultaneously routed in its true and inverted form, which is useful in differential signaling and logic function generation applications.
What supply voltage range does the CD74HC251EG4 support?
The CD74HC251EG4 operates from a supply voltage of 2V to 6V, covering both 3.3V and 5V CMOS logic systems. This wide range makes it compatible with modern low-voltage microcontrollers as well as legacy 5V TTL-compatible systems.
What package does the CD74HC251EG4 use?
The CD74HC251EG4 is packaged in a 16-pin dual-in-line (DIP) through-hole package, which is suitable for prototyping on breadboards and for PCB designs where through-hole assembly is preferred for reliability in vibration-prone or industrial 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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