Overview
The 74HCT164DB,112-NEX is an 8-bit serial-in, parallel-out shift register produced by Nexperia USA Inc. This device is part of the 74HCT family, which is known for its compatibility with TTL (Transistor-Transistor Logic) levels. The 74HCT164DB is designed to operate within a wide range of applications requiring serial-to-parallel data conversion.
The device features two serial data inputs (DSA and DSB), eight parallel data outputs (Q0 to Q7), and a clock input (CP) that shifts data on LOW-to-HIGH transitions. It also includes an asynchronous master reset input (MR) that clears the register and forces all outputs LOW, regardless of other input conditions.
Key Specifications
| Type number | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | fmax (MHz) | Number of bits | Power dissipation considerations | Tamb (°C) | Package name |
|---|---|---|---|---|---|---|---|---|---|
| 74HCT164DB | 4.5 - 5.5 | TTL | ± 4 | 20 | 55 | 8 | Low | -40 ~ 125 | SSOP14 (SOT337-1) |
Key Features
- Wide supply voltage range: Operates from 4.5 to 5.5 V, making it compatible with TTL systems.
- CMOS low power dissipation: Although it operates with TTL levels, it benefits from the low power characteristics of CMOS technology.
- High noise immunity: Ensures reliable operation in noisy environments.
- Gated serial data inputs: Data can be entered serially through DSA or DSB, with either input acting as an active HIGH enable for the other.
- Asynchronous master reset: A LOW on the master reset input clears the register and sets all outputs LOW.
- Compliance with JEDEC standards: Meets JESD8C (2.7 V to 3.6 V) and JESD7A (2.0 V to 6.0 V) standards.
- ESD protection: Offers HBM (Human Body Model) and CDM (Charged Device Model) protection, exceeding 2000 V and 1000 V respectively.
- Multiple package options: Available in SSOP14 package, providing flexibility in design.
Applications
- Digital Systems: Suitable for use in various digital systems requiring serial-to-parallel data conversion.
- Embedded Systems: Can be used in embedded systems where data needs to be processed in both serial and parallel formats.
- Industrial Automation: Useful in industrial automation where data needs to be converted between serial and parallel formats for different components.
- Consumer Electronics: Found in consumer electronics such as audio and video equipment, where serial data needs to be converted to parallel format for processing.
Q & A
- What is the primary function of the 74HCT164DB shift register?
The primary function is to convert serial data input into parallel data output.
- What are the logic switching levels for the 74HCT164DB?
The logic switching levels are TTL (Transistor-Transistor Logic).
- What is the output drive capability of the 74HCT164DB?
The output drive capability is ± 4 mA.
- What is the maximum clock frequency for the 74HCT164DB?
The maximum clock frequency is 55 MHz.
- How many bits of data can the 74HCT164DB handle?
The device can handle 8 bits of data.
- What is the operating temperature range for the 74HCT164DB?
The operating temperature range is -40 °C to +125 °C.
- What type of package is the 74HCT164DB available in?
The device is available in an SSOP14 (SOT337-1) package.
- Does the 74HCT164DB have ESD protection?
Yes, it has ESD protection exceeding 2000 V for HBM and 1000 V for CDM.
- How does the master reset input work on the 74HCT164DB?
A LOW on the master reset input clears the register and sets all outputs LOW, regardless of other input conditions.
- Is the 74HCT164DB compliant with any specific standards?
Yes, it complies with JEDEC standards JESD8C and JESD7A.
