Nexperia USA Inc. 74LV393PW,112

Overview

74LV393PW,112 from Nexperia is a dual 4-bit binary ripple counter IC with two independent asynchronous master reset inputs (1MR, 2MR), two edge-triggered clock inputs (1CP, 2CP), and eight buffered outputs (1Q0–1Q3, 2Q0–2Q3). It operates from 1.0 V to 3.6 V, advances on HIGH-to-LOW clock transitions, and delivers propagation delays as low as 4 ns (VCC = 3.3 V, CL = 15 pF) for inter-stage Q-to-Q timing. It is used in digital timing control, frequency division, and event counting circuits in industrial logic systems.

For engineers reviewing the 74LV393PW,112 datasheet, 74LV393PW,112 pinout, 74LV393PW,112 application, or 74LV393PW,112 equivalent, this page provides verified functional context, validated pin roles, confirmed static/dynamic specifications at -40 °C to +125 °C, and real-world use cases for binary division and asynchronous reset-driven sequencing.

Technical Context

The 74LV393PW,112 implements two independent 4-stage ripple counters using T-type flip-flops cascaded in series, where each stage toggles on the falling edge of its input clock or preceding stage's output. Clocking is asynchronous across stages, resulting in cumulative propagation delay per bit-e.g., 12 ns (1CP→1Q0) and 4 ns (1Q0→1Q1) at VCC = 3.3 V, CL = 15 pF.

Each counter features an active-HIGH asynchronous master reset (1MR/2MR) that forces all four outputs LOW regardless of clock state, enabling immediate deterministic initialization. Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.

Key Specifications

Pinout & Package

TSSOP14 plastic thin shrink small outline package (SOT402-1), 14-lead, body width 4.4 mm, lead pitch 0.65 mm, rated for -40 °C to +125 °C operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual binary counter applications.

Compared with SN74LV393AIPWRE4, the 74LV393PW,112 offers significantly lower quiescent current for energy-sensitive applications; compared with 74LVC393PW,118, it extends low-voltage operability down to 1.0 V at the cost of ~3 ns higher propagation delay.

Availability

74LV393PW,112 is available at Aetrix Electronics and suitable for industrial timer modules, PLC input conditioning, frequency synthesis subsystems, and digital power sequencing requiring stable component supply across extended temperature ranges.

Supply support for 74LV393PW,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 leading Dutch semiconductor manufacturer specializing in high-volume logic, discrete, and MOSFET solutions, with emphasis on reliability, efficiency, and automotive-grade quality.

The 74LV393 belongs to Nexperia's Low-Voltage Logic (LV) family, designed specifically for robust, low-power binary counting and division in industrial, computing, and communications equipment operating across wide voltage and temperature ranges.

FAQ

Can the 74LV393PW,112 be operated at 5 V?

No. The absolute maximum supply voltage is +4.6 V, and recommended operation is limited to 1.0 V–3.6 V per datasheet Table 5. Applying 5 V violates limiting values and risks permanent damage to input clamps and internal transistors. For 5 V systems, consider the 74HC393 or 74HCT393 families instead.

Is the 74LV393PW,112 suitable for synchronous reset applications?

No. The 74LV393PW,112 only supports asynchronous master reset (nMR) - reset occurs immediately upon HIGH assertion, independent of clock edges. It lacks synchronous reset inputs or clock-enable functionality. For synchronous control, use the 74LV163 or 74LV161 counter families.

What is the maximum fan-out capability of the 74LV393PW,112 outputs?

Each output can sink or source up to 6 mA (per Table 9, VOH/VOL test conditions), supporting standard LS-TTL or CMOS loads. At VCC = 3.3 V, VOL ≤ 0.4 V at IO = 6 mA ensures noise margin >0.4 V for 3.3 V logic families. Fan-out beyond 10 should include buffering to maintain timing integrity.

Does the 74LV393PW,112 support cascading counters across both sections?

Yes - the Q3 output of the first counter (pin 6) can drive the CP input of the second counter (pin 13), enabling seamless 8-bit ripple counting (0–255). However, total propagation delay accumulates: 1CP→1Q3 is ~3× inter-stage delay (~12 ns), then +12 ns to 2Q0, resulting in ~24 ns worst-case from 1CP to 2Q0 at 3.3 V.