Overview
The SN74HC594D is an 8-bit serial-in, parallel-out shift register with an integrated 8-bit D-type storage register, manufactured by Texas Instruments. This component is part of the HC series, known for its high-speed CMOS logic. Although the SN74HC594D is no longer in production, it remains relevant for existing designs and educational purposes. The device features separate clocks and direct overriding clear inputs for both the shift and storage registers, making it versatile for various applications.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | SN74HC594D |
| Package | SOIC-16 |
| Operating Voltage | 2 V to 6 V |
| Operating Temperature Range | -40°C to 85°C |
| Input Voltage | 0 to VCC |
| High-Level Input Voltage | 1.5 V (VCC=2V), 3.15 V (VCC=4.5V), 4.2 V (VCC=6V) |
| Low-Level Input Voltage | 0.5 V (VCC=2V), 1.35 V (VCC=4.5V), 1.8 V (VCC=6V) |
| Propagation Delay (tpd) | 15 ns to 51 ns depending on VCC and load capacitance |
| Output Drive Capability | Up to 15 LSTTL loads, ±6 mA at 5 V |
| Power Consumption | Maximum ICC of 80 µA |
Key Features
- Wide operating voltage range of 2 V to 6 V
- High-current outputs capable of driving up to 15 LSTTL loads
- Low power consumption with a maximum ICC of 80 µA
- Typical propagation delay of 15 ns
- Independent clocks for both shift and storage registers
- Direct overriding clear inputs (RCLR, SRCLR) for both shift and storage registers
- Serial output (QH′) for cascading purposes
Applications
- Pro Audio Mixers
- Elevators and Escalators
- Human Machine Interface (HMI) in industrial settings
- Entertainment Systems
- Grid Infrastructure: Grid Control
- Access Control and Security: DVR and DVS
Q & A
- What is the SN74HC594D?
The SN74HC594D is an 8-bit serial-in, parallel-out shift register with an integrated 8-bit D-type storage register. - What is the operating voltage range of the SN74HC594D?
The operating voltage range is from 2 V to 6 V. - What is the operating temperature range of the SN74HC594D?
The operating temperature range is from -40°C to 85°C. - What type of package does the SN74HC594D come in?
The SN74HC594D comes in a SOIC-16 package. - Is the SN74HC594D still in production?
No, the SN74HC594D is no longer in production. - What are the key features of the SN74HC594D?
Key features include high-current outputs, low power consumption, independent clocks, and direct overriding clear inputs. - What are some typical applications of the SN74HC594D?
Typical applications include pro audio mixers, elevators and escalators, HMI in industrial settings, entertainment systems, and grid infrastructure. - What is the propagation delay of the SN74HC594D?
The propagation delay ranges from 15 ns to 51 ns depending on the supply voltage and load capacitance. - How many LSTTL loads can the outputs of the SN74HC594D drive?
The outputs can drive up to 15 LSTTL loads. - What is the maximum power consumption of the SN74HC594D?
The maximum power consumption is 80 µA.
