Overview
The 74HCT595PW,112 is an 8-bit serial-in/serial or parallel-out shift register produced by Nexperia (formerly part of NXP Semiconductors). This component features a storage register and 3-state outputs, making it versatile for various digital circuit applications. It is part of the 74HCT family, which operates at TTL logic levels.
Key Specifications
| Parameter | Value |
|---|---|
| Type Number | 74HCT595PW |
| VCC (V) | 4.5 - 5.5 |
| Logic Switching Levels | TTL |
| Output Drive Capability (mA) | ± 6 |
| tpd (ns) | 25 |
| fmax (MHz) | 57 |
| Number of Bits | 8 |
| Power Dissipation Considerations | Low |
| Tamb (°C) | -40 to +125 |
| Package Name | TSSOP16 |
Key Features
- 8-bit serial input and serial or parallel output capability.
- Storage register with 3-state outputs.
- Shift register with direct clear (asynchronous reset MR input).
- High shift out frequency of up to 100 MHz (typical).
- ESD protection: HBM (ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V) and CDM (ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V).
- Multiple package options, including TSSOP16.
- Operation specified from -40 °C to +85 °C and from -40 °C to +125 °C.
- Serial-to-parallel data conversion capability.
Applications
The 74HCT595PW is suitable for a variety of digital circuit applications, including:
- Remote control holding registers.
- Display drivers.
- Data buffers.
- Serial-to-parallel data conversion in digital systems.
- Cascaded shift register applications.
Q & A
- What is the primary function of the 74HCT595PW?
The primary function is to act as an 8-bit serial-in/serial or parallel-out shift register with a storage register and 3-state outputs. - What are the logic switching levels for the 74HCT595PW?
The logic switching levels are TTL (Transistor-Transistor Logic). - What is the maximum shift out frequency of the 74HCT595PW?
The maximum shift out frequency is up to 100 MHz (typical). - How is data transferred from the shift register to the storage register?
Data is transferred on the LOW-to-HIGH transition of the STCP input. - What is the effect of a HIGH on the OE (output enable) input?
A HIGH on the OE input causes the outputs to assume a high-impedance OFF-state. - What type of ESD protection does the 74HCT595PW have?
The component has HBM (ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V) and CDM (ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V) ESD protection. - What are the operating temperature ranges for the 74HCT595PW?
The operating temperature ranges are from -40 °C to +85 °C and from -40 °C to +125 °C. - What package options are available for the 74HCT595PW?
The component is available in TSSOP16 package among others. - Can the 74HCT595PW be cascaded?
- What is the purpose of the MR (master reset) input?
The MR input is used for asynchronous reset; a LOW on MR will reset the shift register. - What is the purpose of the MR (master reset) input?
