Overview
The MC74HC589ADG 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. The shift register output, QH, is a 3-state output, enabling its use in bus-oriented systems. It is designed to directly interface with the SPI serial data port on CMOS MPUs and MCUs.
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 (fmax) | Up to 35 MHz | MHz |
| Propagation Delay, Latch Clock to QH | 30 to 175 ns | ns |
| Propagation Delay, Shift Clock to QH | 25 to 160 ns | ns |
| Input Capacitance (Cin) | 10 pF | pF |
| Three-State Output Capacitance (Cout) | 15 pF | pF |
| Operating Temperature Range | −55 to +125 °C | °C |
| Storage Temperature Range | −65 to +150 °C | °C |
Key Features
- Output Drive Capability: 15 LSTTL Loads
- Outputs Directly Interface to CMOS, NMOS, and TTL
- Operating Voltage Range: 2.0 to 6.0 V
- Low Input Current: 1 μA
- High Noise Immunity Characteristic of CMOS Devices
- In Compliance with the Requirements Defined by JEDEC Standard No. 7A
- 3-State Output, Allowing Use in Bus-Oriented Systems
- Direct Interface with SPI Serial Data Port on CMOS MPUs and MCUs
Applications
The MC74HC589ADG is suitable for a variety of applications, including:
- Bus-Oriented Systems: The 3-state output enables the device to be used in systems where multiple devices share the same bus.
- Serial Communication: It can be used in serial communication protocols such as SPI due to its direct interface capability.
- Data Storage and Transfer: The device is useful in applications requiring the storage and serial transfer of data.
- Microcontroller and Microprocessor Systems: It can be integrated into systems using CMOS MPUs and MCUs.
Q & A
- What is the operating voltage range of the MC74HC589ADG?
The operating voltage range is from 2.0 to 6.0 V.
- What is the maximum clock frequency for the MC74HC589ADG?
The maximum clock frequency is up to 35 MHz.
- How does the device handle parallel and serial data loading?
The device can load data either serially or in parallel, controlled by the Serial Shift/Parallel Load input.
- What is the purpose of the Output Enable pin?
The Output Enable pin controls the state of the QH output, forcing it into a high-impedance state when high and enabling the output when low.
- What are the package options available for the MC74HC589ADG?
The device is available in SOIC-16 and TSSOP-16 packages.
- Is the MC74HC589ADG compatible with other logic families?
Yes, it directly interfaces with CMOS, NMOS, and TTL logic families.
- What is the propagation delay from the Latch Clock to QH?
The propagation delay ranges from 30 to 175 ns depending on the operating voltage.
- What is the storage temperature range for the MC74HC589ADG?
The storage temperature range is from −65 to +150 °C.
- Does the MC74HC589ADG have any specific requirements for unused inputs?
Yes, unused inputs must be tied to a high-logic voltage level or a low-logic input voltage level and cannot be left open.
- Is the MC74HC589ADG suitable for automotive applications?
Yes, versions with the -Q suffix are AEC-Q100 qualified and PPAP capable for automotive and other applications requiring unique site and control change requirements.
