NXP USA Inc. 74HC595D/S200118

The 74HC595D/S200118, produced by NXP USA Inc. (now part of Nexperia), is an 8-bit serial-in/serial or parallel-out shift register with a storage register and 3-state outputs. This integrated circuit is fabricated using silicon gate C2MOS technology, which combines high-speed operation with low power dissipation characteristic of CMOS devices. The device is designed to handle serial data input and provide either serial or parallel output, making it versatile for various digital circuit applications.

• 8-bit Serial Input and Serial or Parallel Output: The device can receive data serially and output it either serially or in parallel.
• Storage Register with 3-state Outputs: The storage register holds the data and provides 3-state outputs, allowing for high-impedance state when output enable (OE) is high.
• Separate Clocks for Shift and Storage Registers: The shift register and storage register have separate clocks (SHCP and STCP), enabling independent control over data shifting and storage.
• Asynchronous Reset (MR): A LOW on the MR input resets the shift register.
• High-Speed Operation: The device operates at speeds similar to LSTTL while maintaining low power dissipation of CMOS technology.
• Wide Operating Voltage Range: The device operates over a voltage range of 2.0 to 6.0 V.
• ESD Protection: The device features ESD protection exceeding 2000 V (HBM) and 1000 V (CDM).

• Digital Display Drivers: Used in driving LED displays, LCD displays, and other digital displays where serial data needs to be converted to parallel output.
• Microcontroller Interfaces: Often used to expand the output capabilities of microcontrollers by converting serial data streams into parallel outputs.
• Automotive and Industrial Control Systems: Suitable for use in various control systems due to its robustness and wide operating temperature range.
• Consumer Electronics: Found in various consumer electronic devices where serial-to-parallel conversion is necessary.

1. What is the primary function of the 74HC595D?

   The primary function of the 74HC595D is to act as an 8-bit serial-in/serial or parallel-out shift register with a storage register and 3-state outputs.

2. What is the operating voltage range of the 74HC595D?

   The operating voltage range of the 74HC595D is from 2.0 to 6.0 volts.

3. What is the maximum clock frequency for the 74HC595D?

   The maximum clock frequency for the 74HC595D is typically up to 77 MHz.

4. How does the asynchronous reset (MR) work on the 74HC595D?

   A LOW on the MR input resets the shift register.

5. What type of ESD protection does the 74HC595D have?

   The 74HC595D has ESD protection exceeding 2000 V (HBM) and 1000 V (CDM).

6. What is the purpose of the separate clocks (SHCP and STCP) in the 74HC595D?

   The separate clocks allow for independent control over the shift register and the storage register.

7. How does the output enable (OE) input affect the outputs of the 74HC595D?

   A HIGH on the OE input causes the outputs to assume a high-impedance OFF-state, while a LOW enables the outputs.

8. What is the typical propagation delay time for the 74HC595D?

   The typical propagation delay time is between 12 to 21 ns.

9. What package types are available for the 74HC595D?

   The 74HC595D is available in SO16 (SOT109-1) package.

10. What are some common applications of the 74HC595D?

    Common applications include digital display drivers, microcontroller interfaces, automotive and industrial control systems, and consumer electronics.