Overview
The 74HCT595D,112 is an 8-bit serial-in, serial or parallel-out shift register with 3-state output latches, part of the HCT series from NXP Semiconductors. This device is designed for applications requiring serial-to-parallel data conversion and features separate clocks for the shift and storage registers. It is suitable for a wide range of electronic designs, from automotive and industrial to consumer and mobile applications.
Key Specifications
| Parameter | Value |
|---|---|
| Type Number | 74HCT595D |
| Package | SO16 (SOT109-1) |
| 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 |
| Temperature Range (°C) | -40 to +125 |
| ESD Protection | HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V |
Key Features
- 8-bit serial input and serial or parallel output
- Storage register with 3-state outputs
- Shift register with direct clear (asynchronous reset MR input)
- Data is shifted on the LOW-to-HIGH transitions of the SHCP input and transferred to the storage register on a LOW-to-HIGH transition of the STCP input
- Output enable input (OE) allows outputs to be in a high-impedance OFF-state when OE is HIGH
- Inputs include clamp diodes for ESD protection and to interface inputs to voltages in excess of VCC
- Multiple package options available
Applications
The 74HCT595D is versatile and can be used in various applications across different industries, including:
- Automotive systems for data transmission and storage
- Industrial control systems for serial-to-parallel data conversion
- Consumer electronics for display drivers and LED controllers
- Mobile and wearable devices for efficient data handling
Q & A
- What is the primary function of the 74HCT595D?
The primary function is to act as an 8-bit serial-in, serial or parallel-out shift register with 3-state output latches.
- What are the logic switching levels for the 74HCT595D?
The logic switching levels are TTL (Transistor-Transistor Logic).
- What is the typical shift out frequency of the 74HCT595D?
The typical shift out frequency is 57 MHz.
- How does the output enable input (OE) function?
The output enable input (OE) causes the outputs to assume a high-impedance OFF-state when OE is HIGH.
- What is the temperature range for the 74HCT595D?
The temperature range is from -40°C to +125°C.
- Does the 74HCT595D have ESD protection?
- How are the data shifted and transferred in the 74HCT595D?
Data is shifted on the LOW-to-HIGH transitions of the SHCP input and transferred to the storage register on a LOW-to-HIGH transition of the STCP input.
- What package options are available for the 74HCT595D?
It is available in SO16 (SOT109-1) and other package options like TSSOP16.
- Can the 74HCT595D be used in cascaded configurations?
- Is the 74HCT595D RoHS compliant?
