Overview
The SN74HC595DRG4, 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 have separate clocks, and the device includes a direct overriding clear input, serial input, and serial outputs for cascading. The storage register has parallel 3-state outputs, which can be disabled by setting the output-enable (OE) input high.
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 | V | |
| VIH High-Level Input Voltage (VCC = 4.5 V) | 3.15 | 3.15 | V | |
| VIH High-Level Input Voltage (VCC = 6 V) | 4.2 | 4.2 | V | |
| VIL Low-Level Input Voltage (VCC = 2 V) | 0.5 | 0.5 | V | |
| VIL Low-Level Input Voltage (VCC = 4.5 V) | 1.35 | 1.35 | V | |
| VIL Low-Level Input Voltage (VCC = 6 V) | 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 | ||
| Operating Temperature Range | -40 | 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
- Typical propagation delay (tpd) of 13 ns
- ±6-mA output drive at 5 V
- Low input current: 1 μA (maximum)
- Shift register has direct overriding clear (SRCLR) input
- Separate clocks for shift and storage registers
- Output-enable (OE) input to control output state
Applications
- Network switches
- Power infrastructure
- LED displays
- Servers
- Pro Audio Mixers
- Elevators and Escalators
- Human Machine Interface (HMI): Industrial
- Entertainment Systems
- Grid Infrastructure: Grid Control
- Access Control and Security: DVR and DVS
Q & A
- What is the operating voltage range of the SN74HC595DRG4?
The operating voltage range is from 2 V to 6 V.
- How many bits does the shift register have?
The shift register is 8-bit.
- What is the maximum power consumption of the SN74HC595DRG4?
The maximum power consumption is 80 μA.
- Can the outputs of the SN74HC595DRG4 be disabled?
- What is the typical propagation delay of the SN74HC595DRG4?
The typical propagation delay is 13 ns.
- How many LSTTL loads can the high-current 3-state outputs drive?
The high-current 3-state outputs can drive up to 15 LSTTL loads.
- What is the operating temperature range of the SN74HC595DRG4?
The operating temperature range is from -40°C to 85°C.
- Does the SN74HC595DRG4 have separate clocks for the shift and storage registers?
- What is the input current of the SN74HC595DRG4?
The input current is 1 μA (maximum).
- Can the SN74HC595DRG4 be used in cascading configurations?
