Overview
The 74HC595D,118, produced by Nexperia USA Inc., is an 8-bit serial-in/serial or parallel-out shift register with a storage register and 3-state outputs. This integrated circuit is part of the 74HC series and is designed for CMOS logic operations. It features separate clocks for both the shift and storage registers, enabling precise control over data transfer. The device includes a serial input (DS), a serial output (Q7S) for cascading, and an asynchronous reset MR input. The outputs can be set to a high-impedance OFF-state using the output enable input (OE), and the inputs are protected with clamp diodes to handle voltages beyond VCC.
Key Specifications
| Parameter | Value |
|---|---|
| Type Number | 74HC595D |
| Package | SO16 (SOT109-1) |
| Number of Pins | 16 |
| Operating Temperature | -40°C to 125°C |
| Supply Voltage | 2.0 V to 6.0 V |
| Logic Switching Levels | CMOS (74HC595), TTL (74HCT595) |
| Output Drive Capability | ± 7.8 mA |
| Propagation Delay (tpd) | 16 ns (typical) |
| Maximum Frequency (fmax) | 100 MHz (typical) |
| Number of Bits per Element | 8 |
| ESD Protection | HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V |
| Output Type | 3-state |
| Mounting Type | Surface Mount |
| RoHS Status | RoHS Compliant |
Key Features
- 8-bit Serial Input and Serial or Parallel Output: Allows for efficient serial-to-parallel data conversion.
- Separate Clocks for Shift and Storage Registers: Enables precise control over data transfer and storage.
- 3-state Outputs: Outputs can be set to a high-impedance OFF-state using the output enable input (OE).
- Asynchronous Reset (MR): Allows for resetting the shift register with a LOW input on MR.
- ESD Protection: Protected against electrostatic discharge with HBM and CDM compliance.
- High Noise Immunity: Ensures robust performance in environments with substantial electrical interference.
- Automotive Qualification (Q100): Qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) for automotive applications.
Applications
- LED Matrix Displays: Efficiently handles multiple outputs, reducing the number of input/output ports needed on microcontrollers.
- Display Drivers: Suitable for driving display elements in various electronic devices.
- Industrial Systems: Used in complex industrial systems for serial-to-parallel data conversion.
- Computing Peripherals: Finds use in computing peripherals where precise data handling is required.
- Automotive Electronics: Qualified for use in automotive applications due to its compliance with AEC-Q100 standards.
Q & A
- What is the primary function of the 74HC595D,118?
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 operating voltage ranges for the 74HC595D,118?
The operating voltage range is from 2.0 V to 6.0 V.
- How does the asynchronous reset (MR) work?
A LOW input on the MR pin resets the shift register.
- What is the maximum frequency of operation for the 74HC595D,118?
The maximum frequency of operation is typically 100 MHz.
- What type of ESD protection does the 74HC595D,118 have?
The device has ESD protection exceeding 2000 V (HBM) and 1000 V (CDM).
- What are the typical applications of the 74HC595D,118?
Typical applications include LED matrix displays, display drivers, industrial systems, computing peripherals, and automotive electronics.
- Is the 74HC595D,118 RoHS compliant?
Yes, the device is RoHS compliant.
- What is the significance of the separate clocks for the shift and storage registers?
The separate clocks allow for precise control over data transfer and storage, ensuring that the shift register is always one clock pulse ahead of the storage register if both clocks are connected together.
- How does the output enable input (OE) function?
A LOW on the OE input enables the outputs, while a HIGH causes the outputs to assume a high-impedance OFF-state.
- What is the automotive qualification standard for the 74HC595D-Q100,118?
The device is qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1).
