SN74AHC595DRE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74AHC595DRE4 is an 8-bit serial-in, parallel-out shift register from Texas Instruments in the AHC logic family with registered parallel outputs and an additional unregistered serial output for cascading. It is housed in a 16-pin SOIC tape-and-reel package and operates from 2 V to 5.5 V. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SN74AHC595DRE4 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
What are the key features of SN74AHC595DRE4?
- 8-bit serial-in parallel-out shift register with registered outputs
- Unregistered serial output for cascading multiple devices
- AHC logic family operating from 2 V to 5.5 V supply
- 16-pin SOIC package with 50 pF load capacitance rating
- RoHS-compliant lead-free packaging (REACH and Pb-free codes)
- High-speed AHC switching for SPI-connected I/O expansion
What is SN74AHC595DRE4 used for?
The SN74AHC595DRE4 is widely used for expanding microcontroller output pins via SPI, driving LED matrices, 7-segment displays, and relay banks from a 3-wire serial interface. Its registered parallel outputs allow all 8 bits to update simultaneously on a single latch clock edge, preventing glitches in display refresh and motor-driver logic. Multiple devices can be chained using the serial output to create 16-bit, 24-bit, or larger output arrays from a single SPI bus.
What are the specifications of SN74AHC595DRE4?
| Pbfree Code | Yes |
| Reach Compliance Code | Compliant |
| YTEOL | 15 |
| Additional Feature | PARALLEL OUTPUT IS REGISTERED; UNREGISTERED SERIAL OUTPUT AVAILABLE |
| Count Direction | RIGHT |
| Family | AHC/VHC/H/U/V |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | SERIAL IN PARALLEL OUT |
| Max Frequency@Nom-Sup | 85000000Hz |
| Max I(ol) | 0.008A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Output Characteristics | 3-STATE |
| 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) | 0.04mA |
| Propagation Delay (tpd) | 18.5ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| 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 | 115MHz |
| 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 |
| Country of Origin | Malaysia, Mexico |
Where can I find the SN74AHC595DRE4 datasheet?
SN74AHC595DRE4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74AHC595DRE4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How can multiple SN74AHC595DRE4 devices be cascaded to drive more than 8 outputs from a single microcontroller SPI port?
The SN74AHC595DRE4 provides an unregistered serial output (Q7') that connects directly to the serial input of the next device in the chain. By connecting N devices in series and sharing the clock and latch lines, a microcontroller can shift out N×8 bits and update all N×8 parallel outputs simultaneously on one latch pulse. A chain of 3 devices, for example, controls 24 outputs using just 3 microcontroller pins.
What supply voltage range does the SN74AHC595DRE4 support and how does it interface with both 3.3 V and 5 V logic systems?
The SN74AHC595DRE4 operates from 2 V to 5.5 V supply voltage thanks to the AHC logic family's wide VCC range. At 3.3 V supply the device directly interfaces with ARM Cortex-M and RISC-V microcontrollers, while at 5 V it drives 5 V relay modules, motor controllers, and legacy TTL loads. No level-shifting is needed when the supply voltage matches the logic levels of connected devices.
For a 64-LED matrix application, how does the SN74AHC595DRE4 reduce wiring compared to direct microcontroller I/O expansion?
Driving 64 LEDs directly would require 64 microcontroller output pins, whereas eight cascaded SN74AHC595DRE4 devices achieve the same result using only 3 control lines (SPI MOSI, SCLK, and LATCH). Each device controls 8 LED channels with registered parallel outputs updated glitch-free on the latch edge, and each output can sink up to 8 mA at 3.3 V supply to directly drive standard 20 mA LED segments via current-limiting resistors.
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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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