Overview
The CD74HC595M96, produced by Texas Instruments, is an 8-bit serial-in, parallel-out shift register with 3-state output registers. This device is part of the CD74HC595 series and is packaged in a 16-pin SOIC (Small Outline Integrated Circuit) package. It is designed to operate within a wide voltage range of 2 V to 6 V, making it versatile for various applications. The device includes a direct overriding clear input, serial input, and serial output for cascading, along with separate clocks for both the shift and storage registers. When the output-enable input is high, the outputs are in the high-impedance state, which is useful for controlling output states dynamically.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Conditions |
|---|---|---|---|---|---|
| VCC Supply Voltage | -0.5 | 7 | V | ||
| Operating Voltage Range | 2 | 6 | V | ||
| Input Clamp Current (IIK) | ±20 | mA | VI < 0 or VI > VCC | ||
| Output Drive Current (IOH/IOL) | -6 | 6 | mA | VCC = 5 V | |
| Low Power Consumption (ICC) | 80 | µA | VI = VCC or 0, IO = 0 | ||
| Propagation Delay Time (tpd) | 14 | ns | VCC = 5 V | ||
| Clock Frequency (fclock) | 25 | 36 | MHz | VCC = 5 V, TA = 25°C |
Key Features
- 8-Bit Serial-In, Parallel-Out Shift Register: The device contains an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register.
- Wide Operating Voltage Range: Operates over a voltage range of 2 V to 6 V, making it suitable for a variety of applications.
- High-Current 3-State Outputs: Can drive up to 15 LSTTL loads and provide ±6-mA output drive at 5 V.
- Low Power Consumption: Maximum ICC of 80 µA, contributing to low power consumption.
- Separate Clocks for Shift and Storage Registers: Allows for independent control of the shift and storage operations.
- Direct Overriding Clear Input: The SRCLR input allows for immediate clearing of the shift register.
- Serial Output for Cascading: Enables easy cascading of multiple shift registers.
Applications
- Display Drivers: Can be used to drive LED displays, LCD displays, and other types of display systems.
- Data Transmission Systems: Useful in serial-to-parallel data conversion and transmission systems.
- Control Systems: Suitable for use in control systems where serial data needs to be converted to parallel data for processing or display.
- Automotive and Industrial Automation: Can be used in various automotive and industrial automation applications where serial data needs to be processed in parallel.
Q & A
- What is the operating voltage range of the CD74HC595M96?
The operating voltage range is from 2 V to 6 V.
- What type of outputs does the CD74HC595M96 have?
The device has 3-state outputs that can drive up to 15 LSTTL loads.
- What is the maximum clock frequency for the CD74HC595M96?
The maximum clock frequency is 36 MHz at VCC = 5 V and TA = 25°C.
- How does the output-enable (OE) input function?
When the OE input is high, the outputs are in the high-impedance state.
- Can the shift and storage registers be clocked independently?
Yes, the device has separate clocks for both the shift and storage registers.
- What is the purpose of the SRCLR input?
The SRCLR input is used for direct overriding clear of the shift register.
- How can multiple CD74HC595M96 devices be cascaded?
Multiple devices can be cascaded using the serial output of one device connected to the serial input of another.
- What is the typical propagation delay time of the CD74HC595M96?
The typical propagation delay time is 14 ns at VCC = 5 V.
- What is the recommended bypass capacitor for the power supply?
A 0.1-μF capacitor is recommended, and it is acceptable to parallel multiple bypass caps to reject different frequencies of noise.
- What are the package options available for the CD74HC595M96?
The device is available in SOIC-16, PDIP-16, SO-16, and SSOP-16 packages.
