Nexperia USA Inc. 74LVC163DB,112

Overview

74LVC163DB,112 from Nexperia is a synchronous presettable 4-bit binary counter with internal look-ahead carry, synchronous reset (MR), parallel load (PE), and terminal count (TC) output. It operates from 1.2 V to 3.6 V, supports 5.5 V-tolerant inputs, and delivers up to 150 MHz maximum clock frequency at 3.6 V for high-speed counting in digital control logic.

For engineers reviewing the 74LVC163DB,112 datasheet, 74LVC163DB,112 pinout, 74LVC163DB,112 application, or 74LVC163DB,112 equivalent, this device is selected for precise modulo-N timing, cascaded counter chains, and deterministic state initialization in industrial PLCs, test equipment sequencers, and FPGA companion logic where edge-triggered predictability and low-voltage compatibility are critical.

Technical Context

The 74LVC163DB,112 implements four positive-edge-triggered D-type flip-flops with synchronous reset and parallel load, enabling deterministic state capture on CP rising edges regardless of CEP/CET levels. Its look-ahead carry architecture minimizes propagation delay between cascaded stages by feeding CET directly to TC.

Count enable logic requires both CEP and CET HIGH to advance; TC asserts HIGH only when CET = HIGH and Q0–Q3 = HHHH, producing a pulse width ≈ t_PHL(CP→Q0). Synchronous reset via MR overrides all other controls, setting Q0–Q3 to LOW after the next CP edge - eliminating race conditions in reset-driven state machines.

Key Specifications

Pinout & Package

74LVC163DB,112 is packaged in SO16 (SOT109-1), a plastic small outline package with 16 leads and 3.9 mm body width, optimized for wave soldering and board-level reliability in high-volume industrial designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC163APWRE4 and 74LVC163PW,118, the 74LVC163DB,112 offers proven manufacturability in SO16 for wave-soldered industrial boards, while maintaining full electrical equivalence - making it optimal for cost-sensitive, high-reliability production where leaded packages are preferred.

Availability

74LVC163DB,112 is available at Aetrix Electronics and suitable for industrial PLC timing modules, automotive ECU test sequencers, and FPGA companion logic requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVC163DB,112 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 logic, analog, and discrete components with focus on efficiency, reliability, and sustainability.

The 74LVC163DB,112 belongs to Nexperia's LVC logic family - engineered for low-voltage operation (1.2–3.6 V), 5 V-tolerant inputs, and industrial-grade thermal resilience to serve demanding embedded control applications.

FAQ

What is the minimum setup time required for the parallel load function?

The minimum setup time for D0–D3 and PE relative to the CP rising edge is 5.0 ns at VCC = 3.0–3.6 V, per Table 7. This ensures reliable capture of preset data before clock assertion. At lower VCC (e.g., 1.65 V), setup time increases to 5.0 ns minimum, and design margins should include 20% derating for worst-case process/voltage/temperature corners.

Can the 74LVC163DB,112 be used in a 5 V system?

Yes - its inputs tolerate up to 5.5 V regardless of VCC, allowing direct interface with 5 V microcontrollers or sensors. However, VCC must remain within 1.2–3.6 V, and outputs swing between GND and VCC, so external level translation is required to drive 5 V loads unless interfacing with 5 V-tolerant receivers.

How does the terminal count (TC) output behave during cascading?

TC goes HIGH when CET = HIGH and Q0–Q3 = 1111, producing a pulse width approximately equal to Q0's HIGH time. In cascaded configurations, TC drives CET of the next stage, enabling synchronous carry propagation without ripple delay - critical for maintaining timing integrity across multi-bit counters.

Is the synchronous reset (MR) affected by count enable inputs?

No - MR operates independently of CEP, CET, and PE. When MR is pulled LOW, Q0–Q3 are forced to LOW on the next CP rising edge, regardless of enable states. This guarantees deterministic reset behavior even during active counting or loading, preventing unintended state transitions in safety-critical control loops.