Overview
The 74HCT595DB,118 is an 8-bit serial-in/serial or parallel-out shift register with a storage register and 3-state outputs, manufactured by Nexperia USA Inc. This device is part of the 74HC/74HCT family and is designed for a wide range of applications requiring serial-to-parallel data conversion. It features separate clocks for both the shift and storage registers, enabling flexible data transfer and output control.
Key Specifications
| Type number | Package name | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | fmax (MHz) | Number of bits | Operating Temperature (°C) | Package information |
|---|---|---|---|---|---|---|---|---|---|
| 74HCT595DB | SSOP16 (SOT338-1) | 4.5 - 5.5 | TTL | ± 6 | 25 | 57 | 8 | -40 to 125 | SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE |
Key Features
- Wide supply voltage range from 2.0 V to 6.0 V
- CMOS low power dissipation
- High noise immunity
- 8-bit serial input and serial or parallel output
- Storage register with 3-state outputs
- Shift register with direct clear
- 100 MHz (typical) shift out frequency
- Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
- ESD protection: HBM ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
- Multiple package options
Applications
- Serial-to-parallel data conversion
- Remote control holding register
Q & A
- What is the primary function of the 74HCT595DB?
The primary function of the 74HCT595DB 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 supply voltage ranges for the 74HCT595DB?
The supply voltage range for the 74HCT595DB is from 2.0 V to 6.0 V.
- What are the logic switching levels for the 74HCT595DB?
The logic switching levels for the 74HCT595DB are TTL levels.
- What is the maximum shift out frequency of the 74HCT595DB?
The maximum shift out frequency of the 74HCT595DB is typically 100 MHz.
- How does the output enable (OE) input affect the outputs of the 74HCT595DB?
A LOW on the OE input causes the outputs to be active, while a HIGH on the OE input puts the outputs into a high-impedance OFF-state.
- What is the operating temperature range for the 74HCT595DB?
The operating temperature range for the 74HCT595DB is from -40°C to 125°C.
- What type of ESD protection does the 74HCT595DB have?
The 74HCT595DB has ESD protection exceeding 2000 V for HBM (Human Body Model) and 1000 V for CDM (Charged Device Model).
- Can the 74HCT595DB be cascaded with other shift registers?
- What is the effect of the asynchronous reset (MR) input on the shift register?
A LOW on the MR input will reset the shift register.
- What are some common applications of the 74HCT595DB?
