SN74HC165NSRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74HC165NSRG4 is an 8-bit parallel-in/serial-out shift register in 16-pin SOP package. Supports 25 MHz max operating frequency with 50 pF load capacitance and right-count direction. Available from stock worldwide with tape-and-reel packaging.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- SN74HC165NSRG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit parallel-to-serial conversion at up to 25 MHz for high-speed data serialization
- Dual serial/parallel input modes support both SISO and PISO operation from a single device
- 16-pin SOP package in tape-and-reel format enables automated high-volume PCB assembly
Applications
SN74HC165NSRG4 is used in embedded systems where multiple digital inputs must be serialized over a single SPI or bit-bang interface to reduce microcontroller GPIO count. It is commonly deployed in keyboard matrix scanning, sensor bank reading, and industrial I/O expansion boards that require capturing 8-bit parallel data at up to 25 MHz. The HC/UH family ensures 2 V to 6 V operating range compatibility with both 3.3 V and 5 V logic systems.
Specifications
| YTEOL | 0 |
| Additional Feature | SISO OPERATION ALSO AVAILABLE |
| Count Direction | RIGHT |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | PARALLEL IN SERIAL OUT |
| Max Frequency@Nom-Sup | 25000000Hz |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Output Polarity | COMPLEMENTARY |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Propagation Delay (tpd) | 225ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 4.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 29MHz |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum clock frequency for SN74HC165NSRG4 shift operations?
The SN74HC165NSRG4 supports a maximum shift clock frequency of 25 MHz at nominal supply voltage with 50 pF load capacitance. This allows serialization of 8 parallel inputs in as few as 8 clock cycles, achieving throughput of over 3 million 8-bit words per second.
How does SN74HC165NSRG4 reduce GPIO usage in a microcontroller design?
Using SN74HC165NSRG4, 8 parallel digital inputs are serialized onto a single data line, requiring only 3 microcontroller pins (clock, load, and serial data). Chaining multiple devices in series allows reading 16 or 32 inputs with the same 3-pin interface.
What supply voltage range does SN74HC165NSRG4 support?
SN74HC165NSRG4 operates from 2 V to 6 V supply voltage, covering both 3.3 V and 5 V logic systems. The HC family specification guarantees correct parallel load and serial shift operation across this full voltage range and -40°C to +85°C temperature range.
How does the SN74HC165NSRG4 16-pin SOP compare to the DIP package variant for PCB layout?
The SN74HC165NSRG4 in 16-pin SOP occupies approximately 10 mm x 4 mm of board area, significantly smaller than the through-hole DIP-16 footprint of 19 mm x 7 mm. The SOP's surface-mount format also allows placement on both sides of a PCB and supports reflow soldering in automated production 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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