Overview
The M74HC595 is a high-speed CMOS 8-bit shift register with output latches (3-state) manufactured by STMicroelectronics. This device is fabricated using silicon gate C2MOS technology and features a wide range of applications due to its robust specifications and versatile functionality. It includes an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register, with separate clocks for both the shift and storage registers. The device is designed to operate over a wide voltage range and is pin and function compatible with the 74 series 595.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 2 to 6 | V |
| Maximum Clock Frequency (fMAX) | Up to 59 MHz at VCC = 6 V | MHz |
| Quiescent Supply Current (ICC) | 4 μA (max.) at TA = 25 °C | μA |
| High Level Input Voltage (VIH) | 1.5 to 4.2 V depending on VCC | V |
| Low Level Input Voltage (VIL) | 0.5 to 1.8 V depending on VCC | V |
| Output Current (IO) | ± 35 mA | mA |
| Propagation Delay Time (tPLH, tPHL) | 45 to 190 ns depending on VCC and temperature | ns |
| Operating Temperature Range | -55 to 125 °C | °C |
| Package Types | SO16, TSSOP16 |
Key Features
- High speed: Maximum clock frequency up to 59 MHz at VCC = 6 V.
- Low power dissipation: Quiescent supply current of 4 μA (max.) at TA = 25 °C.
- High noise immunity: VNIH = VNIL = 28% VCC (min.).
- Symmetrical output impedance: |IOH| = IOL = 6 mA (min.) for QA to QH.
- Balanced propagation delays: tPLH ≅ tPHL.
- Wide operating voltage range: VCC (opr.) = 2 V to 6 V.
- Pin and function compatible with 74 series 595.
- ESD performance: HBM = 2 kV, MM = 200 V, CDM = 1 kV.
- Separate clocks for shift and storage registers.
- 3-state outputs.
Applications
- Automotive
- Industrial
- Computer
- Consumer electronics
Q & A
- What is the maximum clock frequency of the M74HC595? The maximum clock frequency is up to 59 MHz at VCC = 6 V.
- What is the quiescent supply current of the M74HC595? The quiescent supply current is 4 μA (max.) at TA = 25 °C.
- What is the operating voltage range of the M74HC595? The operating voltage range is 2 V to 6 V.
- What are the package types available for the M74HC595? The device is available in SO16 and TSSOP16 packages.
- Is the M74HC595 compatible with the 74 series 595? Yes, it is pin and function compatible with the 74 series 595.
- What is the ESD performance of the M74HC595? The ESD performance is HBM = 2 kV, MM = 200 V, CDM = 1 kV.
- Does the M74HC595 have separate clocks for the shift and storage registers? Yes, it has separate clocks for both the shift and storage registers.
- What is the output current capability of the M74HC595? The output current capability is ± 35 mA.
- What is the propagation delay time of the M74HC595? The propagation delay time ranges from 45 to 190 ns depending on VCC and temperature.
- What are the typical applications of the M74HC595? Typical applications include automotive, industrial, computer, and consumer electronics.
