Texas Instruments SN74HC595DBR – 8-Bit Serial-In, Parallel-Out Shift Register with Tri-State Outputs
Logic ICs · Texas Instruments
8-Bit Serial-to-Parallel Conversion – Efficiently expands microcontroller GPIOs. Tri-State Outputs – Allows multiple devices on the same bus (high-impedance when disabled). Wide Voltage Range (2V–6V) – Works with 3.3V and 5V systems.
- Logic Type
- 8-bit Shift Register (Serial-In, Parallel-Out)
- Output Type
- Tri-State
- Supply Voltage Range
- 2V to 6V (Supports 5V & 3.3V logic)
- Operating Temperature
- -40°C to +85°C (Industrial-grade reliability)
- Package Type
- 16-SSOP (5.30mm wide, surface-mount)
- Base Product Number
- 74HC595
- Professional sourcingVetted supply chain with documented traceability
- Genuine partsDocumented traceability on every shipment
- ESD-safe handlingOriginal packaging, moisture controlled
- Worldwide shippingConsolidated freight to 100+ countries
Specifications
Core ratings and package details for this logic ics (SN74HC595DBR). Use the table below when comparing drop-in options or validating a schematic callout.
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Logic Type | 8-bit Shift Register (Serial-In, Parallel-Out) | Max Clock Frequency | 24MHz |
| Output Type | Tri-State | Propagation Delay (tpd) | 13ns typical |
| Supply Voltage Range | 2V to 6V (Supports 5V & 3.3V logic) | Output Current (IOL/IOH) | ±6mA @5V (Drives LEDs & relays) |
| Operating Temperature | -40°C to +85°C (Industrial-grade reliability) | Input Current (Max) | 1μA (Low leakage) |
| Package Type | 16-SSOP (5.30mm wide, surface-mount) | Power Consumption | 80μA (Max) ICC (Energy-efficient) |
| Base Product Number | 74HC595 | Part Number | Key Difference |
Product Overview
A closer look at SN74HC595DBR as a logic ics: functional summary, usage notes, and the features that matter in real designs.
- 8-Bit Serial-to-Parallel Conversion – Efficiently expands microcontroller GPIOs.
- Tri-State Outputs – Allows multiple devices on the same bus (high-impedance when disabled).
- Wide Voltage Range (2V–6V) – Works with 3.3V and 5V systems.
SN74HC595DBR 8-Bit Serial-In, Parallel-Out High-Performance Shift Register for LED Multiplexing, Data Storage, and More
The SN74HC595DBR Shift Register from Texas Instruments is a high-speed, low-power 8-bit serial-in, parallel-out shift register with tri-state outputs. Designed for use in LED displays, network switches, servo control, and data buffering, this IC allows microcontrollers to control multiple outputs using just three pins (SER, CLK, LATCH). Part of the 74HC logic family, it features CMOS-level inputs for low power consumption and a 24MHz max clock speed, making it ideal for high-efficiency digital systems.Technical Specifications
| Parameter | Value |
|---|---|
| Logic Type | 8-bit Shift Register (Serial-In, Parallel-Out) |
| Output Type | Tri-State |
| Supply Voltage Range | 2V to 6V (Supports 5V & 3.3V logic) |
| Operating Temperature | -40°C to +85°C (Industrial-grade reliability) |
| Package Type | 16-SSOP (5.30mm wide, surface-mount) |
| Base Product Number | 74HC595 |
| Max Clock Frequency | 24MHz |
| Propagation Delay (tpd) | 13ns typical |
| Output Current (IOL/IOH) | ±6mA @5V (Drives LEDs & relays) |
| Input Current (Max) | 1μA (Low leakage) |
| Power Consumption | 80μA (Max) ICC (Energy-efficient) |
Applications
1. LED Matrix & Display Control
- Used in LED drivers, 7-segment displays, and dot-matrix panels to reduce microcontroller pin usage.
- Example: ESP32/Arduino driving 64 LEDs with just 3 pins.
2. Servo & Motor Control
- Manages multiple PWM signals for robotics and servo arrays.
- Example: Driving 8 servo motors from a single microcontroller.
3. Digital Data Buffering & Storage
- Acts as a serial-to-parallel FIFO buffer in network switches and IoT devices.
- Example: Storing configuration data in embedded systems.
4. High-Speed Serial Communication
- Cascades with multiple SN74HC595 for 16-bit, 24-bit, or more expansion.
- Example: LED light show controllers with chained registers.
Functional Description
The Texas Instruments SN74HC595DBR Shift Register consists of:- Shift Register (Serial Input → Parallel Output)
- Data enters via SER (Serial Input), shifted in with SRCLK (Shift Clock).
- After 8 bits, data moves to the Storage Register via RCLK (Latch Clock).
- Output Enable (OE) Control
- When OE is HIGH, outputs are high-impedance (tri-state).
- When OE is LOW, stored data appears on outputs.
- Cascading Capability
- QH' (Serial Output) connects to the next SN74HC595’s SER pin for expansion.
Why Choose SN74HC595DBR Shift Register?
- Wide Compatibility – Works with 5V, 3.3V, or mixed-voltage logic systems.
- Industrial Temperature Range – Reliable in automotive, industrial, and military applications.
- Space-Efficient SSOP-16 Package – Ideal for compact PCB designs.
Alternatives & Cross-References
| Part Number | Key Difference |
|---|---|
| CD74HC595 | Military-grade version (wider temp range) |
| 74HCT595 | TTL-compatible inputs (better for mixed logic) |
| TPIC6B595 | High-power Darlington outputs (for motors/LEDs) |
Ordering & Packaging
| Part Number | Package | Mounting | Quantity |
|---|---|---|---|
| SN74HC595DBR | 16-SSOP | SMD (Reel) | 2500 units/reel |
| SN74HC595N | 16-PDIP | Through-Hole | 40 units/tube |
Datasheet & Resources
📄 Download Full Datasheet (SN74HC595.PDF) 🔧 Arduino Example CodeFinal Summary
The TI SN74HC595DBR Shift Register is a versatile shift register for LED control, digital storage, and I/O expansion. With tri-state outputs, high speed (24MHz), and low power, it remains a top choice for embedded designers.- Best For: LED matrices, servo control, serial data buffering.
- Alternatives: If higher current is needed, consider TPIC6B595.
Design Resources
Tutorial and application reading tied to SN74HC595DBR. These are editorial guides on this site, not manufacturer PDFs.
Frequently Asked Questions
Short answers for sourcing SN74HC595DBR from Texas Instruments: what to confirm before you place the order.
What is SN74HC595DBR?
8-Bit Serial-to-Parallel Conversion – Efficiently expands microcontroller GPIOs. Tri-State Outputs – Allows multiple devices on the same bus (high-impedance when disabled). Wide Voltage Range (2V–6V) – Works with 3.3V and 5V systems.
What package is SN74HC595DBR supplied in?
SN74HC595DBR is supplied in 16-SSOP (5.30mm wide, surface-mount) by Texas Instruments.
What is the operating temperature range of SN74HC595DBR?
SN74HC595DBR operating temperature is -40°C to +85°C (Industrial-grade reliability).
What type of component is SN74HC595DBR?
SN74HC595DBR is a Logic ICs from Texas Instruments.
What are equivalents or related parts for SN74HC595DBR?
Related or alternative MPNs listed for SN74HC595DBR include CD74HC595SM96, SN74HC595N. Compare package, ratings, and lifecycle status before substituting.
What are the key specifications of SN74HC595DBR?
Operating Temperature: -40°C to +85°C (Industrial-grade reliability); Power Consumption: 80μA (Max) ICC (Energy-efficient); Logic Type: 8-bit Shift Register (Serial-In, Parallel-Out); Output Type: Tri-State; Supply Voltage Range: 2V to 6V (Supports 5V & 3.3V logic).
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