Nexperia USA Inc. 74HC165D,653

Overview

74HC165D,653 from Nexperia is an 8-bit parallel-in/serial-out shift register in SO16 package, featuring asynchronous parallel load (PL), synchronous serial shift (CP/CE), dual complementary outputs (Q7/Q7), and overvoltage-tolerant inputs up to 15 V. It operates from 2.0 V to 6.0 V and supports industrial temperature range (–40 °C to +125 °C), enabling use in microcontroller GPIO expansion for industrial sensor arrays.

For engineers reviewing the 74HC165D,653 datasheet, 74HC165D,653 pinout, 74HC165D,653 application, or 74HC165D,653 equivalent, this device serves as a low-power, CMOS-level-compatible interface for parallel-to-serial data conversion in space-constrained embedded control systems with level-shifting requirements.

Technical Context

The 74HC165D,653 implements an 8-stage static shift register with dual-edge-controlled functionality: PL=LOW enables immediate parallel loading of D0–D7, while PL=HIGH enables serial shifting on CP rising edges when CE=LOW. Its clock enable (CE) input gates CP propagation, allowing precise timing control without external gating logic.

Input overvoltage tolerance (up to 15 V) permits direct interfacing with 5 V or 3.3 V logic driving 12 V systems, and its CMOS input thresholds (VIH ≥ 3.15 V @ VCC = 4.5 V, VIL ≤ 1.35 V) ensure robust noise immunity in electrically noisy industrial environments.

Key Specifications

Pinout & Package

74HC165D,653 uses the SOT109-1 (SO16) plastic small outline package: 16-pin, 3.9 mm body width, 1.27 mm pitch, gull-wing leads. Thermal resistance θJA = 110 K/W (JEDEC standard board).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar parallel-in/serial-out shift register applications.

Compared with 74HCT165D,653 and SN74LV165AIPW, the 74HC165D,653 uniquely balances wide supply flexibility (2–6 V), industrial temperature rating, and 15 V overvoltage tolerance - making it optimal for retrofitting and mixed-voltage industrial interfaces without redesigning input conditioning.

Availability

74HC165D,653 is available at Aetrix Electronics and suitable for industrial PLC input expansion, automotive body control modules, and IoT sensor hub interfaces requiring stable component supply across extended temperature and voltage ranges.

Supply support for 74HC165D,653 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert delivering high-performance, reliable logic, discrete, and MOSFET solutions optimized for efficiency and miniaturization in industrial and automotive applications.

The 74HC165D,653 belongs to Nexperia's HC logic family - engineered for low-power, high-noise-immunity digital interfacing in harsh environments where long-term reliability and wide operating margins are mandatory.

FAQ

Can 74HC165D,653 operate reliably at 2.0 V supply?

Yes. The device is fully specified down to 2.0 V: propagation delay is 165 ns (max) at 25 °C, VIH is 1.5 V (min), and ICC remains below 80 μA. This enables compatibility with energy-harvesting systems and ultra-low-power battery-operated sensors where supply regulation is minimal.

What is the maximum clock frequency supported at 5.0 V?

At VCC = 5.0 V and CL = 15 pF, the maximum clock frequency is 56 MHz (typical) with 20 MHz guaranteed across –40 °C to +125 °C. This allows sub-20 ns cycle times for high-throughput data acquisition in real-time control loops.

How does the PL (parallel load) input interact with ongoing serial shifts?

PL is asynchronous and dominant: when pulled LOW, it immediately loads D0–D7 into the register regardless of CP or CE state, overriding any ongoing shift operation. This ensures deterministic capture of parallel data without synchronization delays or pipeline stalls.

Is the GND pad on the SO16 package electrically connected internally?

Yes - Pin 8 is the sole functional ground connection. The exposed thermal pad on bottom of SO16 (SOT109-1) is not internally connected and must remain floating or be tied to GND externally only if thermal enhancement is required; soldering it without grounding may cause parasitic coupling.