Overview
The MC74HC589ADTR2G is a high-performance silicon-gate CMOS 8-bit serial or parallel-input/serial-output shift register produced by onsemi. This device integrates an 8-bit storage latch and an 8-bit shift register, allowing data to be loaded either serially or in parallel. It is designed to interface directly with the SPI serial data port on CMOS microprocessors and microcontrollers, making it suitable for various digital systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| DC Supply Voltage (VCC) | 2.0 to 6.0 | V |
| DC Input Voltage (VIN) | −0.5 to VCC+0.5 | V |
| DC Output Voltage (VOUT) | −0.5 to VCC+0.5 | V |
| Maximum Clock Frequency (50% Duty Cycle) | Up to 35 MHz (at VCC = 6.0 V) | MHz |
| Maximum Propagation Delay, Latch Clock to QH | 30 ns (at VCC = 6.0 V) | ns |
| Maximum Propagation Delay, Shift Clock to QH | 25 ns (at VCC = 6.0 V) | ns |
| Operating Temperature Range | −55 to +125 °C | °C |
| Storage Temperature Range | −65 to +150 °C | °C |
| Output Drive Capability | 15 LSTTL Loads | |
| Low Input Current | 1 μA | μA |
Key Features
- 8-bit storage latch and 8-bit shift register with 3-state output
- Data can be loaded serially or in parallel
- Direct interface with SPI serial data port on CMOS MPUs and MCUs
- Operating voltage range: 2.0 to 6.0 V
- Low input current: 1 μA
- High noise immunity characteristic of CMOS devices
- In compliance with JEDEC Standard No. 7A
- Output drive capability: 15 LSTTL loads
- Outputs directly interface to CMOS, NMOS, and TTL
Applications
The MC74HC589ADTR2G is suitable for a variety of digital systems, including:
- Bus-oriented systems due to its 3-state output capability
- Microprocessor and microcontroller systems requiring serial or parallel data transfer
- Digital communication systems using SPI protocols
- General-purpose digital logic circuits requiring serial or parallel data handling
Q & A
- What is the operating voltage range of the MC74HC589ADTR2G?
The operating voltage range is from 2.0 to 6.0 V.
- How can data be loaded into the MC74HC589ADTR2G?
Data can be loaded either serially or in parallel.
- What is the maximum clock frequency for the shift register?
The maximum clock frequency is up to 35 MHz at VCC = 6.0 V.
- What is the propagation delay from the latch clock to the output QH?
The maximum propagation delay is 30 ns at VCC = 6.0 V.
- What is the output drive capability of the MC74HC589ADTR2G?
The output drive capability is 15 LSTTL loads.
- Is the MC74HC589ADTR2G compatible with CMOS, NMOS, and TTL systems?
- What is the storage temperature range for the MC74HC589ADTR2G?
The storage temperature range is from −65 to +150 °C.
- How does the output enable pin function?
A high level on the output enable pin forces the QH output into a high impedance state, while a low level enables the output.
- What is the purpose of the serial shift/parallel load pin?
The serial shift/parallel load pin controls whether the shift register operates in serial shift mode or accepts parallel data from the data latch.
- Is the MC74HC589ADTR2G suitable for automotive applications?
The device with the '-Q' suffix is AEC-Q100 qualified and PPAP capable, making it suitable for automotive and other demanding applications.
