CD74HCT597M96G4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The CD74HCT597M96G4 is an 8-bit high-speed CMOS parallel-in/serial-out shift register operating up to 20 MHz in a 16-pin SOIC package. It features TTL-compatible inputs, 50 pF load tolerance, and SISO operation capability. Available from stock worldwide with RoHS-compliant e4 lead-free finish.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HCT597M96G4 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
What are the key features of CD74HCT597M96G4?
- 8-bit parallel-in/serial-out shift register with additional SISO mode, supporting flexible data serialization in TTL-compatible HCT-family designs
- Maximum clock frequency of 20 MHz with 50 pF load capacitance rating for reliable high-speed serial data conversion
- 16-pin SOIC (R-PDSO-G16) package with RoHS e4 Pb-free finish enabling compliant, compact SMT board assembly
What is CD74HCT597M96G4 used for?
The CD74HCT597M96G4 is used to serialize parallel sensor or switch data onto a single wire in microcontroller-based systems, reducing GPIO count in keyboards, industrial I/O expanders, and panel meter interfaces. Its TTL-compatible HCT inputs allow direct interfacing with 5 V microcontrollers and legacy CMOS logic without level-shifting. The 20 MHz clock rate supports fast scan cycles in real-time control applications.
What are the specifications of CD74HCT597M96G4?
| YTEOL | 0 |
| Additional Feature | SISO OPERATION ALSO AVAILABLE |
| Count Direction | RIGHT |
| Family | HCT |
| 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 |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 50mA |
| Propagation Delay (tpd) | 57ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| 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 | 16MHz |
| 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 |
Where can I find the CD74HCT597M96G4 datasheet?
CD74HCT597M96G4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HCT597M96G4?
Compatible alternatives and drop-in replacements for CD74HCT597M96G4:
Parallel In Serial Out, HCT Series, 8-Bit, Right Direction, True Output, CMOS, PDSO16
Frequently Asked Questions
What is the maximum clock frequency and load capacitance rating for CD74HCT597M96G4?
The CD74HCT597M96G4 supports a maximum clock frequency of 20 MHz with a 50 pF load capacitance rating. This makes it suitable for fast parallel-to-serial data conversion tasks in 5 V HCT-family logic systems where multiple shift registers are daisy-chained on the same serial bus.
How can CD74HCT597M96G4 reduce GPIO pin count when reading an 8-channel switch bank on a microcontroller?
By connecting the 8 parallel inputs to the switch bank and clocking the shift register at up to 20 MHz, the microcontroller reads all 8 bits over a single serial data line plus clock and latch signals, reducing the GPIO requirement from 8 dedicated inputs down to 3 pins. This is especially valuable in space- and pin-constrained embedded designs.
Is CD74HCT597M96G4 compatible with 3.3 V logic systems, or does it require a 5 V supply?
The HCT family uses TTL-compatible input thresholds and is designed for a 4.5 V to 5.5 V supply rail, so direct 3.3 V input drive may not reliably meet the VIH threshold of 2 V minimum. For 3.3 V microcontroller interfaces a level-shifter or a comparable HC-series device operating at 3.3 V is the recommended alternative.
What package does CD74HCT597M96G4 use, and how does the tape-and-reel suffix affect procurement?
The device comes in a 16-pin SOIC (JESD-30 code R-PDSO-G16) with the M96 suffix indicating a 2500-unit tape-and-reel packaging. This reel quantity is standard for automated SMT pick-and-place assembly lines, but buyers needing smaller quantities should request cut-tape or tube packaging from their distributor.
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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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