Nexperia USA Inc. 74HC393PW,112

Overview

74HC393PW,112 from NXP Semiconductors is a dual 4-bit binary ripple counter IC with independent clock inputs per section, 2V–6V supply range, CMOS logic level compatibility, and TSSOP-14 package. It performs asynchronous counting in digital timing, frequency division, and event sequencing applications such as industrial control timers and LED blinker circuits.

For engineers reviewing the 74HC393PW,112 datasheet, 74HC393PW,112 pinout, 74HC393PW,112 application, or 74HC393PW,112 equivalent, key selection criteria include dual-section independence, propagation delay (typ. 15 ns at 4.5 V), reset functionality per counter, and TSSOP-14 thermal and routing constraints.

Technical Context

The device integrates two identical 4-bit asynchronous binary counters sharing no internal signal path-each has dedicated clock (CP0/CP1) and master reset (MR0/MR1) pins. Counting occurs on the HIGH-to-LOW clock transition, with outputs advancing asynchronously after propagation delay.

Each counter section drives Q0–Q3 outputs representing 2⁰ to 2³ weight bits. No carry lookahead is implemented; carry-out (Q4) is derived solely from Q3's falling edge, limiting high-speed cascading without external synchronization.

Key Specifications

Pinout & Package

TSSOP-14 (Thin Shrink Small Outline Package), 0.65 mm pitch, 5.0 mm × 6.4 mm body, exposed pad not present, moisture sensitivity level MSL3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HC393DR and 74HCT393PW,118, the 74HC393PW,112 offers optimal board area efficiency and lowest propagation delay in its package class, while the HCT variant adds input threshold flexibility at no pinout cost.

Availability

74HC393PW,112 is available at Aetrix Electronics and suitable for industrial timer modules, LED pattern generators, sensor interface dividers, and data logger event counters requiring stable component supply across multi-year production cycles.

Supply support for 74HC393PW,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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The 74HC logic family targets robust, low-power digital interfacing and timing functions in cost-sensitive embedded systems where reliability and wide supply voltage tolerance are critical.

FAQ

What is the maximum operating frequency of the 74HC393PW,112?

The 74HC393PW,112 achieves a maximum clock frequency of 36 MHz at VCC = 4.5 V and 25 °C. This rating assumes clean clock edges, proper decoupling, and load conditions matching the datasheet test setup (15 pF capacitive load). At 6 V supply, max frequency drops to 25 MHz due to increased internal node capacitance.

Can the two counters be cascaded for an 8-bit count?

Yes-the Q3 output of the first section can drive the CP input of the second section to form an 8-bit ripple counter. However, total propagation delay accumulates (up to ~120 ns worst-case), and intermediate states may appear due to asynchronous stage transitions. For deterministic 8-bit behavior, synchronous counters like 74HC163 are recommended.

Does the 74HC393PW,112 support reset synchronization?

No-it implements only asynchronous master reset (MR). The MR signal takes effect immediately, overriding clock and current count state. To achieve synchronized reset, external logic (e.g., D flip-flop gated by clock) must be added to delay MR assertion until the next clock edge.

Is the TSSOP-14 package RoHS compliant and lead-free?

Yes-the 74HC393PW,112 uses a lead-free, RoHS-compliant TSSOP-14 package with matte tin finish on leads. NXP confirms compliance with Directive 2011/65/EU and JESD97 stress testing standards. Solder reflow profile follows IPC/JEDEC J-STD-020 Rev E for MSL3 handling.