CD74HC166E Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments CD74HC166E is an 8-bit Parallel-In/Serial-Out shift register in a 16-pin DIP package. Operates up to 20 MHz with 50 pF load capacitance and supports SISO operation. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC166E 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
- High-speed CMOS logic supporting up to 20 MHz clock frequency for fast serial data transfer
- Dual-mode operation: supports both Parallel-In/Serial-Out and Serial-In/Serial-Out (SISO) configurations
- Standard 16-pin DIP package with JEDEC compliance (R-PDIP-T16) for easy through-hole PCB assembly
- RoHS-compliant (Pb-free, e4 rated) ensuring compatibility with modern environmental standards
Applications
The CD74HC166E is widely used in microcontroller and FPGA systems for converting parallel data to serial streams, reducing the number of I/O pins required. It is ideal for industrial control systems, data acquisition modules, and communication interfaces where efficient bus expansion is needed. Its high-speed operation also makes it suitable for signal processing pipelines in embedded systems.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | SISO OPERATION ALSO AVAILABLE |
| Count Direction | RIGHT |
| Family | HC/UH |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | PARALLEL IN SERIAL OUT |
| Max Frequency@Nom-Sup | 20000000Hz |
| Max I(ol) | 0.0052A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.16mA |
| Prop. Delay@Nom-Sup | 32ns |
| Propagation Delay (tpd) | 240ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| 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 |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 24MHz |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum operating frequency of the CD74HC166E?
The CD74HC166E supports a maximum clock frequency of 20 MHz (20,000,000 Hz) with a load capacitance of 50 pF, making it suitable for high-speed serial data transfer applications.
Can the CD74HC166E operate in serial-in/serial-out (SISO) mode?
Yes, the CD74HC166E supports SISO (Serial-In/Serial-Out) operation in addition to its primary Parallel-In/Serial-Out function, providing added flexibility for various shift register configurations.
What package type does the CD74HC166E use?
The CD74HC166E comes in a 16-pin Dual-In-Line Package (PDIP), JEDEC code R-PDIP-T16, which is a standard through-hole package suitable for prototyping and PCB mounting.
Is the CD74HC166E RoHS compliant?
Yes, the CD74HC166E is Pb-free (lead-free) and carries JESD-609 code e4, confirming it meets RoHS environmental compliance requirements for use in modern electronics manufacturing.
What are common applications for the CD74HC166E?
The CD74HC166E is commonly used in embedded systems, PLCs, data acquisition boards, and communication interfaces to convert 8-bit parallel data into serial streams, minimizing required I/O lines.
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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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