Overview
The SN74HC595DRG3, 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 SNx4HC595 family and is designed for a wide range of applications requiring serial-to-parallel data conversion. It features a wide operating voltage range of 2 V to 6 V, making it versatile for various system designs. The shift register has a direct overriding clear input, serial input, and serial outputs for cascading, along with separate clocks for both the shift and storage registers.
Key Specifications
| Parameter | Min | Nom | Max |
|---|---|---|---|
| Supply Voltage (VCC) | 2 V | 5 V | 6 V |
| High-Level Input Voltage (VIH) | 1.5 V (VCC = 2 V) | 3.15 V (VCC = 4.5 V) | 4.2 V (VCC = 6 V) |
| Low-Level Input Voltage (VIL) | 0.5 V (VCC = 2 V) | 1.35 V (VCC = 4.5 V) | 1.8 V (VCC = 6 V) |
| Input Current (II) | 1 μA | ||
| Output Drive | ±6 mA at 5 V | ||
| Propagation Delay Time (tpd) | 13 ns | ||
| Operating Free-Air Temperature (TA) | -40°C | 85°C |
Key Features
- 8-bit serial-in, parallel-out shift register
- Wide operating voltage range of 2 V to 6 V
- High-current 3-state outputs can drive up to 15 LSTTL loads
- Low power consumption: 80-μA (maximum) ICC
- Low input current: 1 μA (maximum)
- ±6-mA output drive at 5 V
- Shift register has direct overriding clear (SRCLR) input
- Separate clocks for both the shift and storage register
Applications
- Network switches
- Power infrastructure
- LED displays
- Servers
Q & A
- What is the operating voltage range of the SN74HC595DRG3? The operating voltage range is 2 V to 6 V.
- How many bits does the shift register have? The shift register is 8-bit.
- What is the maximum output drive at 5 V? The maximum output drive at 5 V is ±6 mA.
- What is the propagation delay time (tpd) of the device? The typical propagation delay time is 13 ns.
- Can the outputs be disabled? Yes, the outputs can be disabled by setting the output-enable (OE) input high.
- What is the maximum input current? The maximum input current is 1 μA.
- Does the device have a direct clear function? Yes, the shift register has a direct overriding clear (SRCLR) input.
- What are the typical applications of the SN74HC595DRG3? Typical applications include network switches, power infrastructure, LED displays, and servers.
- What is the operating temperature range of the device? The operating free-air temperature range is -40°C to 85°C.
- Can the shift registers be cascaded? Yes, the shift registers can be cascaded using the serial outputs.
