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
Key Features
- 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
Applications
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.
Specifications
| 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 |
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 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.
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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.
| 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 |
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