Overview
The SN74HC595NE4, produced by Texas Instruments, is an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. This device is part of the HC family of logic devices, designed for CMOS applications. It features a wide operating voltage range of 2 V to 6 V, making it versatile for various electronic systems. The shift register and storage register each have separate clocks, which are positive-edge triggered. This allows for precise control over data shifting and storage.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 2 | 5 | 6 | V |
| VIH High-Level Input Voltage (VCC = 2 V) | 1.5 | 1.5 | 1.5 | V |
| VIH High-Level Input Voltage (VCC = 4.5 V) | 3.15 | 3.15 | 3.15 | V |
| VIH High-Level Input Voltage (VCC = 6 V) | 4.2 | 4.2 | 4.2 | V |
| VIL Low-Level Input Voltage (VCC = 2 V) | 0.5 | 0.5 | 0.5 | V |
| VIL Low-Level Input Voltage (VCC = 4.5 V) | 1.35 | 1.35 | 1.35 | V |
| VIL Low-Level Input Voltage (VCC = 6 V) | 1.8 | 1.8 | 1.8 | V |
| ICC Power Consumption (Max) | 80 | μA | ||
| IOH Output Drive at 5 V | ±6 | mA | ||
| tpd Propagation Delay (Typical) | 13 | ns | ||
| TA Operating Free-Air Temperature | -40 | 85 | °C |
Key Features
- 8-bit serial-in, parallel-out shift register feeding an 8-bit D-type storage register.
- Wide operating voltage range of 2 V to 6 V.
- High-current 3-state outputs capable of driving up to 15 LSTTL loads.
- Low power consumption: maximum ICC of 80 μA.
- Low input current: maximum of 1 μA.
- ±6-mA output drive at 5 V.
- Direct overriding clear (SRCLR) input and separate clocks for shift and storage registers.
- Output-enable (OE) input to control output states.
Applications
- Network switches
- Power infrastructure
- LED displays
- Servers
Q & A
- What is the operating voltage range of the SN74HC595NE4?
The operating voltage range is from 2 V to 6 V.
- How many bits does the shift register and storage register have?
Both the shift register and storage register are 8-bit.
- What is the maximum output drive at 5 V?
The maximum output drive at 5 V is ±6 mA.
- What is the typical propagation delay?
The typical propagation delay is 13 ns.
- Can the outputs be disabled?
- What is the maximum power consumption?
The maximum power consumption (ICC) is 80 μA.
- What are the typical operating temperatures?
The typical operating temperatures range from -40°C to 85°C.
- Can the device drive LSTTL loads?
- How many clock inputs are there for the shift and storage registers?
- What is the purpose of the SRCLR input?
The SRCLR input is for direct overriding clear of the shift register.
