Overview
The SN74HC595DE4 is an 8-bit serial-in, parallel-out shift register produced by Texas Instruments. It is part of the HC family of logic devices, designed for CMOS applications. This component integrates an 8-bit serial-in shift register that feeds an 8-bit D-type storage register, providing parallel 3-state outputs. The device features separate clocks for both the shift and storage registers, allowing for flexible operation. The SN74HC595DE4 is packaged in a 16-pin SOIC (Small Outline Integrated Circuit) package, making it suitable for surface mount applications.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 2 | 5 | 6 | V |
| VIH High-Level Input Voltage (VCC = 2 V) | 1.5 | 1.5 | 1.5 | V |
| VIH High-Level Input Voltage (VCC = 4.5 V) | 3.15 | 3.15 | 3.15 | V |
| VIH High-Level Input Voltage (VCC = 6 V) | 4.2 | 4.2 | 4.2 | V |
| VIL Low-Level Input Voltage (VCC = 2 V) | 0.5 | 0.5 | 0.5 | V |
| VIL Low-Level Input Voltage (VCC = 4.5 V) | 1.35 | 1.35 | 1.35 | V |
| VIL Low-Level Input Voltage (VCC = 6 V) | 1.8 | 1.8 | 1.8 | V |
| ICC Power Consumption (Max) | 80 μA | |||
| tpd Propagation Delay (Typical) | 13 ns | |||
| Output Drive at 5 V | ±6 mA | |||
| Operating Temperature Range | -40°C | 85°C | °C |
Key Features
- 8-bit serial-in, parallel-out shift register
- Wide operating voltage range of 2 V to 6 V
- High-current 3-state outputs can drive up to 15 LSTTL loads
- Low power consumption: 80-μA (maximum) ICC
- Typical propagation delay of 13 ns
- ±6-mA output drive at 5 V
- Low input current of 1 μA (maximum)
- Shift register has direct overriding clear (SRCLR) input
- Separate clocks for shift and storage registers
- Output-enable (OE) input for high-impedance state control
Applications
- Network switches
- Power infrastructure
- LED displays
- Servers
Q & A
- What is the operating voltage range of the SN74HC595DE4?
The operating voltage range is from 2 V to 6 V.
- How many bits does the shift register have?
The shift register is 8-bit.
- What type of outputs does the SN74HC595DE4 have?
The device has parallel 3-state outputs.
- What is the maximum power consumption of the SN74HC595DE4?
The maximum power consumption is 80 μA.
- What is the typical propagation delay of the SN74HC595DE4?
The typical propagation delay is 13 ns.
- Can the outputs drive LSTTL loads?
- What is the package type of the SN74HC595DE4?
The package type is 16-pin SOIC (Small Outline Integrated Circuit).
- What are the operating temperature ranges for the SN74HC595DE4?
The operating temperature range is from -40°C to 85°C.
- Does the shift register have a direct clear input?
- Are there separate clocks for the shift and storage registers?
