Overview
The SN74LV595A device, manufactured by Texas Instruments, is an 8-bit serial-in, parallel-out shift register with 3-state output registers. This component is designed for operation within a voltage range of 2 V to 5.5 V, making it versatile for various applications. The device features separate clocks for both the shift register and the storage register, both of which are positive-edge triggered. It includes a direct overriding clear input, serial input, and serial output for cascading, as well as an output-enable input that controls the high-impedance state of the outputs. The SN74LV595A is available in a 16-pin TSSOP (PW) package and supports mixed-mode voltage operation on all ports, making it suitable for a wide range of digital logic applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage Range | 2 | 5.5 | V | |
| Operating Temperature Range | -40 | 125 | °C | |
| Maximum tpd at 5 V | 7.1 | ns | ||
| Typical VOLP (Output Ground Bounce) at VCC = 3.3 V, TA = 25°C | < 0.8 | V | ||
| Typical VOHV (Output VOH Undershoot) at VCC = 3.3 V, TA = 25°C | > 2.3 | V | ||
| Continuous Output Current | ±35 | mA | ||
| Input Clamp Current (VI < 0) | -20 | mA | ||
| Output Clamp Current (VO < 0) | -50 | mA | ||
| Package Type | 16-pin TSSOP (PW) |
Key Features
- VCC operation of 2 V to 5.5 V
- Maximum tpd of 7.1 ns at 5 V
- Typical VOLP (output ground bounce) < 0.8 V at VCC = 3.3 V, TA = 25°C
- Typical VOHV (output VOH undershoot) > 2.3 V at VCC = 3.3 V, TA = 25°C
- Supports mixed-mode voltage operation on all ports
- 8-bit serial-in, parallel-out shift
- Ioff supports live insertion, partial power-down mode, and back-drive protection
- Shift register has direct clear
- Latch-up performance exceeds 250 mA per JESD 17
Applications
- Output expansion
- LED matrix control
- 7-segment display control
Q & A
- What is the operating voltage range of the SN74LV595A?
The SN74LV595A operates within a voltage range of 2 V to 5.5 V.
- What is the maximum propagation delay (tpd) at 5 V?
The maximum propagation delay at 5 V is 7.1 ns.
- What is the typical output ground bounce (VOLP) at VCC = 3.3 V and TA = 25°C?
The typical output ground bounce is less than 0.8 V.
- Does the SN74LV595A support mixed-mode voltage operation?
Yes, it supports mixed-mode voltage operation on all ports.
- What type of shift register does the SN74LV595A contain?
The SN74LV595A contains an 8-bit serial-in, parallel-out shift register.
- What is the function of the Ioff feature in the SN74LV595A?
The Ioff feature supports live insertion, partial power-down mode, and back-drive protection.
- Does the shift register have a direct clear input?
Yes, the shift register has a direct overriding clear input.
- What is the latch-up performance of the SN74LV595A?
The latch-up performance exceeds 250 mA per JESD 17.
- In what package is the SN74LV595APWR available?
The SN74LV595APWR is available in a 16-pin TSSOP (PW) package.
- What are some common applications of the SN74LV595A?
Common applications include output expansion, LED matrix control, and 7-segment display control.
