NXP Semiconductors 74HC163D,653

Overview

74HC163D,653 from Nexperia is a synchronous presettable 4-bit binary counter with internal look-ahead carry, synchronous reset (active LOW), and dual count-enable inputs (CEP/CET) for cascading. It operates at up to 55 MHz (VCC = 6.0 V), supports CMOS-level inputs, and delivers glitch-free counting in industrial temperature range (−40 °C to +125 °C) within SO16 package.

For engineers reviewing the 74HC163D,653 datasheet, 74HC163D,653 pinout, 74HC163D,653 application, or 74HC163D,653 equivalent, this device is selected for precise modulus-N counter design, clock-domain synchronization in digital control logic, and multi-stage timing chains requiring deterministic reset and carry propagation.

Technical Context

The 74HC163D,653 implements four edge-triggered D-type flip-flops clocked synchronously on the positive-going CP edge, enabling simultaneous state update across Q0–Q3 outputs. Its synchronous reset (MR) clears all outputs only after the next CP edge, eliminating race conditions during reset assertion.

Look-ahead carry generation uses CET and CEP to enable TC output - a HIGH pulse of duration ≈ Q0 HIGH time - which directly drives the CE input of the next cascaded stage. Parallel load occurs when PE is LOW, independent of CEP/CET states, allowing immediate presetting of D0–D3 values on the next CP edge.

Key Specifications

Pinout & Package

74HC163D,653 is housed in SO16 plastic small outline package (SOT109-1), 16-pin, 3.9 mm body width, with standard JEDEC pinout and gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 4-bit synchronous counter applications.

Compared with 74HC163D,653, the 74HCT163D,653 offers direct TTL interface without level shifters but trades off slightly higher quiescent current, while SN74HC163N provides mechanical compatibility for breadboarding at the cost of reduced thermal robustness and no industrial-grade qualification.

Availability

74HC163D,653 is available at Aetrix Electronics and suitable for industrial control systems, automotive body electronics, and programmable logic designs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC163D,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 power management and digital systems.

The 74HC163D,653 belongs to Nexperia's 74HC logic family - engineered for low-power, high-noise-immunity digital control in automotive, industrial, and consumer applications demanding robust operation across wide voltage and temperature ranges.

FAQ

What is the maximum clock frequency supported by 74HC163D,653?

The 74HC163D,653 achieves a maximum clock frequency of 55 MHz at VCC = 6.0 V and CL = 50 pF, per Table 7 of the official Nexperia datasheet Rev. 5. At VCC = 4.5 V, fmax drops to 46 MHz (25 °C) and 22 MHz (−40 °C to +125 °C). This frequency is limited by CP-to-Qn propagation delay and input setup/hold timing margins.

How does synchronous reset differ from asynchronous reset in this device?

74HC163D,653 implements synchronous reset: MR must be asserted LOW before the next CP rising edge, and Q0–Q3 transition to 0000 only on that edge. Unlike asynchronous reset, it cannot override ongoing clock cycles - preventing metastability and ensuring deterministic state transitions aligned to system clock domain.

Can 74HC163D,653 be cascaded to form an 8-bit counter? How is carry handled?

Yes - two 74HC163D,653 devices can be cascaded into an 8-bit counter using look-ahead carry. Connect TC of Stage 1 to CET of Stage 2, and tie CEP of both stages HIGH. When Stage 1 reaches 1111, its TC pulse enables Stage 2 to increment on the next CP, avoiding ripple delay accumulation between stages.

Is 74HC163D,653 compatible with 3.3 V microcontroller GPIOs?

Yes - at VCC = 3.3 V, VIH(min) = 2.1 V (per Table 6), which is safely exceeded by standard 3.3 V CMOS outputs (~3.0–3.3 V HIGH). VOL(max) = 0.26 V at IO = 4 mA ensures clean LOW detection. No level shifter is needed for direct interface with 3.3 V MCUs like STM32 or ESP32.