Overview
The MC74HC164A, specifically the MC74HC164ADR2G, is a high-performance silicon-gate CMOS 8-bit serial-input to parallel-output shift register produced by onsemi. This device is identical in pinout to the LS164 and is designed to be compatible with standard CMOS outputs, as well as LSTTL outputs when used with pullup resistors. It features two serial data inputs, A1 and A2, allowing one input to be used as a data enable. The device operates over a wide voltage range from 2.0 V to 6.0 V, making it versatile for various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| DC Supply Voltage (VCC) | −0.5 to +6.5 | V |
| DC Input Voltage (VIN) | −0.5 to VCC+0.5 | V |
| DC Output Voltage (VOUT) | −0.5 to VCC+0.5 | V |
| Operating Voltage Range | 2.0 to 6.0 | V |
| Low Input Current | 1 μA | |
| Output Drive Capability | 10 LSTTL Loads | |
| Storage Temperature Range | −65 to +150 | °C |
| Junction Temperature Under Bias | +150 | °C |
| Thermal Resistance (SOIC-14) | 116 °C/W | |
| Power Dissipation in Still Air at 25°C (SOIC-14) | 1077 mW |
Key Features
- 8-bit serial-input to parallel-output shift register.
- Two serial data inputs (A1 and A2) with one input usable as a data enable.
- Data entered on each rising edge of the clock.
- Active-low asynchronous Reset input overrides the Clock and Serial Data inputs.
- Outputs directly interface to CMOS, NMOS, and TTL.
- High noise immunity characteristic of CMOS devices.
- In compliance with JEDEC Standard No. 7A requirements.
- Pb-free, halogen-free/BFR-free, and RoHS compliant.
- AEC-Q100 qualified and PPAP capable for automotive and other applications requiring unique site and control change requirements.
Applications
The MC74HC164A is suitable for a variety of applications, including:
- Digital display systems.
- Serial-to-parallel data conversion.
- Shift register applications in digital circuits.
- Automotive and industrial control systems due to its AEC-Q100 qualification.
- General-purpose digital logic circuits where high noise immunity and low power consumption are required.
Q & A
- What is the operating voltage range of the MC74HC164A?
The operating voltage range is from 2.0 V to 6.0 V. - How many serial data inputs does the MC74HC164A have?
The device has two serial data inputs, A1 and A2. - What is the function of the Reset input?
The active-low asynchronous Reset input overrides the Clock and Serial Data inputs, resetting all internal flip-flops and setting the outputs to the low level state. - Is the MC74HC164A compatible with LSTTL outputs?
Yes, with pullup resistors, the inputs are compatible with LSTTL outputs. - What is the output drive capability of the MC74HC164A?
The output drive capability is 10 LSTTL loads. - Is the MC74HC164A RoHS compliant?
Yes, the device is Pb-free, halogen-free/BFR-free, and RoHS compliant. - What are the package options for the MC74HC164ADR2G?
The MC74HC164ADR2G is available in a TSSOP-14 package. - What is the storage temperature range for the MC74HC164A?
The storage temperature range is from −65°C to +150°C. - Is the MC74HC164A suitable for automotive applications?
Yes, it is AEC-Q100 qualified and PPAP capable, making it suitable for automotive and other applications requiring unique site and control change requirements. - What is the thermal resistance of the SOIC-14 package?
The thermal resistance of the SOIC-14 package is 116 °C/W.
