Nexperia USA Inc. 74HC164D,652

Product Summary Nexperia 74HC164D,652 8-bit Serial Input, Parallel Output Shift Register

The Nexperia 74HC164D,652 shift register represents a highly versatile and robust solution for designers seeking serial-to-parallel data conversion in digital systems. As part of the 74HC164 and 74HCT164 series, this 8-bit device is engineered for data communication, logic expansion, and interface bridging in embedded applications. Operating across a broad voltage range (2.0 V to 6.0 V), and housed in multiple compact packages such as SO14, TSSOP14, and DHVQFN14, the 74HC164D,652 serves efficiently in consumer electronics, industrial control, and instrumentation projects. The series delivers reliable performance even under demanding environments, and its compatibility with both CMOS and TTL logic levels streamlines integration into diverse systems.

Main Characteristics and Advantages of the 74HC164D,652 Series

The 74HC164D,652 comes equipped with an array of features designed to support modern digital engineering needs. Its CMOS implementation ensures low power dissipation, making it well-suited for battery-operated and power-sensitive applications. High noise immunity and advanced input clamping diodes provide resilience against input transients, supporting system robustness. The device’s input levels—CMOS for 74HC164, TTL for 74HCT164—expand its compatibility. Asynchronous master reset allows rapid clearing of outputs, an essential function in initialization or error-recovery scenarios. Compliance with JEDEC standards (JESD8C for 2.7–3.6 V, JESD7A for 2.0–6.0 V) guarantees consistent performance across operating ranges, while ESD and latch-up protections (2000 V HBM, 1000 V CDM, >100 mA latch-up) mitigate risks in handling and assembly. Reliability is further ensured by operating temperature ratings spanning −40°C to +85°C (with some variants up to +125°C).

Internal Structure and Operational Principle of 74HC164D,652 Shift Register

At its core, the 74HC164D,652 is an 8-bit serial-in, parallel-out (SIPO) shift register with two serial data inputs (DSA, DSB) and eight parallel outputs (Q0 to Q7). Data entry can be orchestrated through either DSA or DSB, and the configuration allows one input to act as an active high enable for the other. Serial data streams into the register on the low-to-high transitions of the clock (CP) input, making the device responsive to precise timing schemes typical in microcontroller interfacing and bus expansion. The master reset (MR) input asynchronously clears all outputs, ensuring predictable startup states in system designs. The functional diagram reveals a simple workflow: serial data is clocked through, filling the register bit-by-bit, and simultaneously delivering parallel output at each stage—facilitating efficient conversion between serial and parallel domains in digital architectures.

Pin Layout and Function Descriptions of the 74HC164D,652

The 74HC164D,652 is available in 14-pin packages with clearly defined pinouts for straightforward integration. Key pins include the serial data inputs (DSA, DSB), clock input (CP), asynchronous master reset (MR), eight parallel outputs (Q0–Q7), supply voltage (VCC), and ground (GND). The device features a floating solder pad (not electrically connected), enhancing board layout flexibility. Engineers must ensure appropriate signal connections and take note of the absence of a ground requirement for the solder pad. The pin description table provides details for correct assignment and electrical interfacing, simplifying schematic development and layout during PCB design.

Electrical Specifications and Suggested Working Parameters for the 74HC164D,652

For optimal performance, the 74HC164D,652 should be operated within its specified voltage range of 2.0 V to 6.0 V, referenced to GND. The series offers comprehensive static and dynamic characteristic curves; at recommended voltages, the device reliably distinguishes input states, minimizes quiescent current, and ensures swift propagation delays. Dynamic characteristics include clock-to-output propagation time, output transition rates, and master reset response, which are critical when designing time-sensitive circuits or high-speed data lines. The series’ absolute maximum ratings, output load capacitance guidelines, and pulse width specifications must be observed to maintain integrity and extend device lifecycle in deployed systems.

Power Management and Protection Guidelines for 74HC164D,652 in Engineering Use

Designers implementing the 74HC164D,652 must account for power dissipation based on dynamic switching conditions. The product datasheet provides formulas for calculating dynamic power consumption, incorporating frequency, load capacitance, and active input statistics, guiding designers to size power supplies appropriately. The integrated clamp diodes allow the use of current-limiting resistors for input voltages exceeding VCC, supporting safe interfacing in mixed-voltage environments. ESD and latch-up protections significantly reduce risks during board assembly and operation, and the robust package construction allows operation in extended temperature ranges for industrial applications. It is essential to heed the absolute maximum ratings to prevent permanent damage, especially under transient or fault conditions.

Available Packaging Types and Physical Specifications of the 74HC164D,652

Nexperia offers the 74HC164D,652 in multiple industry-standard packaging options: SO14 (SOT108-1), TSSOP14 (SOT402-1), and DHVQFN14 (SOT762-1). Each package features precise mechanical dimensions supporting automated assembly and compact layouts. The choice of package impacts thermal performance, board footprint, and soldering approach—SOIC and TSSOP excel in board-level replacements and hand assembly, while DHVQFN enhances area efficiency in high-density designs. Designers can reference the detailed mechanical outlines for exact layout footprints and assembly tolerance planning.

Possible Alternatives or Substitute Devices for the 74HC164D,652

When considering the 74HC164D,652 shift register for a new design or as a drop-in replacement, engineers may review the broader 74HC164 and 74HCT164 series for alternative logic level compatibility (CMOS vs. TTL) and package styles. Other manufacturers may offer pin-compatible components within the 74HC164/74HCT164 family, typically matching electrical and timing specifications. Selection of an appropriate equivalent should take into account voltage compatibility, package form factor, and required electrical robustness to match specific system constraints. Cross-reference tables and product comparison tools can assist in identifying suitable alternatives based on these technical criteria.

Conclusion

The 74HC164D,652 shift register from Nexperia stands out as a reliable, feature-rich component for serial-to-parallel data handling in modern electronic systems. Its robust features, broad operating range, flexible packaging, and resilience to electrical stresses position it as a preferred choice for engineers tasked with expanding digital I/O capability, optimizing board layouts, or upgrading existing designs. By understanding the detailed technical characteristics and engineering considerations outlined above, product selection experts and procurement teams can confidently integrate the 74HC164D,652 into their projects or identify optimal replacements where needed.