Overview
The SN74HC595PW is an 8-bit serial-in, parallel-out shift register produced by Texas Instruments. This integrated circuit is part of the 74HC series, known for its high-speed CMOS logic. The device features a wide operating voltage range and is designed for various applications requiring serial-to-parallel data conversion.
The SN74HC595PW contains an 8-bit serial-in shift register that feeds an 8-bit D-type storage register. The storage register has parallel 3-state outputs, and separate clocks are provided for both the shift and storage registers. This configuration allows for flexible data handling and output control.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2 | 5 | 6 | V |
| Operating Temperature Range | -40 | 85 | °C | |
| High-Level Input Voltage (VIH) | 1.5 (VCC=2V) | 3.15 (VCC=4.5V) | 4.2 (VCC=6V) | V |
| Low-Level Input Voltage (VIL) | 0.5 (VCC=2V) | 1.35 (VCC=4.5V) | 1.8 (VCC=6V) | V |
| Input Current | 1 µA | µA | ||
| Output Drive | ±6 mA at 5 V | mA | ||
| Propagation Delay (tpd) | 13 ns | ns | ||
| Package Type | TSSOP (16 pins) |
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 (tpd) of 13 ns
- ±6-mA output drive at 5 V
- Low input current: 1 µA (maximum)
- Shift register has direct 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
- Any system requiring serial-to-parallel data conversion
Q & A
- What is the operating voltage range of the SN74HC595PW?
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 is the typical propagation delay of the SN74HC595PW?
The typical propagation delay (tpd) is 13 ns.
- Can the outputs of the SN74HC595PW be driven to high-impedance state?
- What is the maximum output drive current at 5 V?
The maximum output drive current at 5 V is ±6 mA.
- What is the package type of the SN74HC595PW?
The package type is TSSOP with 16 pins.
- What is the operating temperature range of the SN74HC595PW?
The operating temperature range is from -40°C to 85°C.
- Does the SN74HC595PW have a direct clear input for the shift register?
- Can the SN74HC595PW drive multiple LSTTL loads?
- What is the maximum input current of the SN74HC595PW?
The maximum input current is 1 µA.
