CD54HCT165F3A Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The CD54HCT165F3A is a high-speed CMOS HCT-family 8-bit parallel-in/serial-out shift register operating at up to 20 MHz in a 16-pin ceramic DIP package. It supports both parallel load and serial shift operations with 50 pF load capacitance. Available from stock worldwide at competitive prices.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD54HCT165F3A 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
- 8-bit parallel-in/serial-out shift register with up to 20 MHz clock frequency for high-speed serial data conversion
- HCT-family logic ensures direct TTL input compatibility while maintaining CMOS low power consumption
- Ceramic 16-pin DIP package (JESD-30 R-GDIP-T16) providing enhanced reliability for military and industrial temperature environments
Applications
The CD54HCT165F3A is used in microcontroller and FPGA interfaces to serialize parallel input data for transmission over SPI or other serial buses, reducing I/O pin count. It is applied in keyboard scanning, sensor multiplexing, and data acquisition systems where multiple parallel signals must be read serially. The device also serves in test equipment, industrial control panels, and communication front-ends requiring reliable high-speed parallel-to-serial conversion.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | SISO OPERATION ALSO AVAILABLE |
| Count Direction | RIGHT |
| Family | HCT |
| JESD-30 Code | R-GDIP-T16 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | PARALLEL IN SERIAL OUT |
| Max Frequency@Nom-Sup | 20000000Hz |
| Max I(ol) | 0.004A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| 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 |
| Prop. Delay@Nom-Sup | 50ns |
| Propagation Delay (tpd) | 60ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Screening Level | 38535Q/M;38534H;883B |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 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 |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 24MHz |
| 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 CD54HCT165F3A:
Parallel In Serial Out, HCT Series, 8-Bit, Right Direction, True Output, CMOS, CDIP16
Frequently Asked Questions
What is the maximum operating frequency of the CD54HCT165F3A?
The CD54HCT165F3A operates at a maximum clock frequency of 20 MHz (20,000,000 Hz) at nominal supply voltage, enabling fast parallel-to-serial data conversion suitable for high-speed embedded and communication system designs.
Is the CD54HCT165F3A compatible with TTL logic inputs?
Yes. The HCT family uses TTL-compatible input thresholds, making the CD54HCT165F3A directly interfaceable with 74LS and other TTL devices operating at 5 V without level-shifting circuitry, while its outputs retain CMOS rail-to-rail swing.
What package does the CD54HCT165F3A come in?
It is housed in a 16-pin ceramic dual-in-line package (CDIP), referenced as JESD-30 code R-GDIP-T16. The ceramic construction provides superior thermal stability and moisture resistance compared to plastic packages, making it preferred for military and harsh-environment applications.
Can the CD54HCT165F3A also operate as a serial-in/serial-out (SISO) shift register?
Yes. The device supports SISO operation in addition to parallel load mode. By using the serial data input while not asserting the parallel load pin, it functions as an 8-stage serial shift register, offering additional flexibility in signal routing and delay-line applications.
What is the load capacitance specification for the CD54HCT165F3A?
The CD54HCT165F3A is specified for a load capacitance of 50 pF per output, consistent with standard HCT-series fanout ratings and typical PCB trace capacitances, ensuring timing parameters are met under normal printed circuit board conditions.
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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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