Nexperia USA Inc. 74LVC163D,118

Overview

74LVC163D,118 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 across 1.2 V–3.6 V supply, 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 timing and control circuits.

For engineers reviewing the 74LVC163D,118 datasheet, 74LVC163D,118 pinout, 74LVC163D,118 application, or 74LVC163D,118 equivalent, key selection considerations include synchronous reset behavior, dual count-enable (CEP/CET) cascading capability, TC pulse width matching Q0 HIGH duration, and SO16 package compatibility with legacy 74-series board layouts.

Technical Context

The 74LVC163D implements four edge-triggered D-type flip-flops with synchronous clocking on the positive-going edge of CP. All state changes-including reset, preset, and count-occur only on CP transitions, eliminating ripple-induced glitches during cascaded operation.

Its look-ahead carry architecture enables direct serial cascading via CET feed-forward to TC, where TC asserts HIGH only when CET = HIGH and Q0–Q3 = HHHH. The TC pulse width equals the HIGH time of Q0, ensuring precise inter-stage enable timing without external delay compensation.

Key Specifications

Pinout & Package

74LVC163D,118 is housed in a 16-lead SO16 plastic small outline package (SOT109-1), 3.9 mm body width, with gull-wing leads and standard 1.27 mm pitch. Pin 1 is marked by a notch or index area; pin 16 is VCC, pin 8 is GND.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVC163PW,118, the 74LVC163D,118 offers superior thermal performance and socket compatibility; versus SN74LVC163APWR, it provides tighter TC timing and broader JEDEC voltage-range validation - both critical for deterministic multi-stage counting in industrial control.

Availability

74LVC163D,118 is available at Aetrix Electronics and suitable for industrial PLC timing modules, automotive body control units, test equipment pattern generators, and legacy industrial bus interface cards requiring stable component supply across extended temperature and voltage ranges.

Supply support for 74LVC163D,118 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 focused on high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVC163D belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, engineered for robust operation across 1.2 V–3.6 V supplies with 5 V-tolerant inputs - targeting cost-sensitive, power-efficient digital control and timing applications.

FAQ

Can 74LVC163D,118 operate reliably at 1.2 V supply?

Yes - the device is fully specified down to 1.2 V supply, with guaranteed functionality including 20 ns/V input transition rate and functional operation across −40 °C to +125 °C. At 1.2 V, maximum clock frequency is 100 MHz, and propagation delays increase to 18 ns (CP to Qn), making it suitable for ultra-low-power battery-operated sequencers where timing margins permit.

What is the exact relationship between TC pulse width and Q0 timing?

The TC output pulse width is defined as equal to the HIGH time of Q0, as confirmed in the functional description and timing diagrams (Fig. 7). This occurs because TC is asserted only when CET = HIGH and Q0–Q3 = HHHH, and deasserts immediately upon Q0 transitioning LOW on the next count - ensuring precise, glitch-free enable timing for cascaded stages without external pulse shaping.

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

74LVC163D,118 implements synchronous reset: MR must be asserted LOW *before* the next CP rising edge, and Q0–Q3 change only *on* that edge. This eliminates metastability and ensures deterministic timing relative to the system clock - unlike asynchronous reset, which would override CP and risk race conditions in cascaded configurations.

Is the SO16 package (SOT109-1) pin-compatible with legacy 74HC163 or 74LS163?

Yes - the SO16 pinout matches JEDEC-standard 16-pin DIP and SOIC footprints: MR (1), CP (2), D0–D3 (3–6), CEP (7), GND (8), PE (9), CET (10), Q0–Q3 (11–14), TC (15), VCC (16). Signal mapping and logic behavior are functionally identical, enabling drop-in replacement in existing designs with no layout changes required.