CD74HC597NSR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The CD74HC597NSR is an 8-bit parallel-in serial-out (PISO) shift register from Texas Instruments in the HC CMOS family, operating at up to 20 MHz with 50 pF load capacitance in a 16-pin SOIC package. It supports both PISO and SISO operation for flexible serial data conversion. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC597NSR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2695(MOQ 250)
- 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 CD74HC597NSR?
- Parallel-in serial-out (PISO) operation with SISO mode support enables versatile 8-bit data serialization and shift register chaining
- Up to 20 MHz maximum operating frequency at nominal supply voltage supports high-speed SPI and serial bus data acquisition
- HC CMOS family with Pb-free 16-pin SOIC package delivers broad supply voltage compatibility and RoHS compliance for industrial designs
What is CD74HC597NSR used for?
The CD74HC597NSR is widely used in microcontroller and FPGA systems to expand parallel GPIO into serial interfaces, enabling SPI-based data acquisition from multiple 8-bit parallel sensors or switch arrays with minimal signal lines. Its PISO shift register architecture suits keyboard matrix scanning, industrial I/O expanders, and data serialization stages in communication equipment. The device also fits legacy system interface designs and daisy-chainable shift register networks for LED matrix and display driver applications.
What are the specifications of CD74HC597NSR?
| Pbfree Code | Yes |
| YTEOL | 15 |
| 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 | 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 | SOP16,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.16mA |
| Prop. Delay@Nom-Sup | 37ns |
| Propagation Delay (tpd) | 265ns |
| 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 | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 24MHz |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia |
Where can I find the CD74HC597NSR datasheet?
CD74HC597NSR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HC597NSR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum operating frequency of the CD74HC597NSR?
The CD74HC597NSR operates at a maximum frequency of 20 MHz (20,000,000 Hz) at nominal supply voltage with a 50 pF load capacitance, making it suitable for high-speed parallel-to-serial conversion in SPI and serial bus applications.
What is the difference between PISO and SISO modes on the CD74HC597NSR?
In PISO (Parallel-In Serial-Out) mode, the CD74HC597NSR loads 8 parallel data bits simultaneously and shifts them out serially. In SISO (Serial-In Serial-Out) mode, data enters serially and is shifted through the register, allowing daisy-chaining of multiple devices to extend the serial data width.
What package does the CD74HC597NSR come in and is it RoHS compliant?
The CD74HC597NSR is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package with JESD-30 code R-PDSO-G16, and is fully RoHS compliant (Pb-free, JESD-609 e4), suitable for lead-free SMT production in commercial and industrial electronics.
How can the CD74HC597NSR be used to expand microcontroller I/O?
By connecting the CD74HC597NSR in PISO mode to an SPI port, a microcontroller can read 8 parallel digital inputs using only 3 signal lines (clock, latch, and serial data). Multiple devices can be daisy-chained to read 16, 24, or more parallel inputs without additional GPIO pins.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 250+ | $0.4913 | $122.83 |
| 500+ | $0.4707 | $235.33 |
| 1000+ | $0.3608 | $360.80 |
| 10000+ | $0.3217 | $3217.00 |
| 100000+ | $0.2695 | $26950.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit