Overview
The SN74HC595DWRG4 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, along with a direct overriding clear input and serial outputs for cascading. This makes it versatile for various digital circuit 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 | - | V |
| VIH High-Level Input Voltage (VCC = 4.5 V) | 3.15 | 3.15 | - | V |
| VIH High-Level Input Voltage (VCC = 6 V) | 4.2 | 4.2 | - | V |
| VIL Low-Level Input Voltage (VCC = 2 V) | 0.5 | 0.5 | - | V |
| VIL Low-Level Input Voltage (VCC = 4.5 V) | 1.35 | 1.35 | - | V |
| VIL Low-Level Input Voltage (VCC = 6 V) | 1.8 | 1.8 | - | V |
| Output Current (Continuous) | - | - | ±35 mA | mA |
| Propagation Delay (tpd) at VCC = 5 V | - | 13 ns | - | ns |
| Operating Free-Air Temperature | -40 | - | 85 | °C |
| Input Transition Rise/Fall Time at VCC = 2 V | - | 1000 ns | - | ns |
| Input Transition Rise/Fall Time at VCC = 4.5 V | - | 500 ns | - | ns |
| Input Transition Rise/Fall Time at VCC = 6 V | - | 400 ns | - | ns |
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
- Low input current: 1 μA (maximum)
- ±6-mA output drive at 5 V
- Direct overriding clear (SRCLR) input
- Separate clocks for shift and storage registers
- Serial outputs for cascading
Applications
- Network switches
- Power infrastructure
- LED displays
- Servers
Q & A
- What is the operating voltage range of the SN74HC595DWRG4?
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 SN74HC595DWRG4 have?
The device has parallel 3-state outputs. - What is the maximum output current of the SN74HC595DWRG4?
The maximum continuous output current is ±35 mA. - What is the typical propagation delay at VCC = 5 V?
The typical propagation delay is 13 ns. - What is the operating free-air temperature range?
The operating free-air temperature range is from -40°C to 85°C. - Can the SN74HC595DWRG4 drive LSTTL loads?
Yes, it can drive up to 15 LSTTL loads. - What is the maximum input current?
The maximum input current is 1 μA. - Does the SN74HC595DWRG4 have a direct clear input?
Yes, it has a direct overriding clear (SRCLR) input. - Can the SN74HC595DWRG4 be cascaded?
Yes, it has serial outputs for cascading.
