Nexperia USA Inc. 74HC193PW,112

Overview

74HC193PW,112 from Nexperia is a presettable synchronous 4-bit binary up/down counter in TSSOP16 package, operating from 2.0 V to 6.0 V supply. It features separate CPU and CPD clock inputs, asynchronous master reset (MR), asynchronous parallel load (PL), and active-low terminal count outputs (TCU/TCD). Used in digital timing control, frequency division, and cascaded multistage counters in industrial control panels and programmable logic interfaces.

For engineers reviewing the 74HC193PW,112 datasheet, 74HC193PW,112 pinout, 74HC193PW,112 application, or 74HC193PW,112 equivalent, this page delivers verified functional behavior, exact pin roles, real-world timing constraints, and validated alternatives for synchronous counting systems requiring bidirectional operation and parallel preset capability.

Technical Context

The device implements four edge-triggered D-type flip-flops with synchronous up/down counting logic controlled by mutually exclusive CPU/CPD enable states. Count direction is determined solely by which clock input is pulsed while the other remains HIGH - no internal state machine governs direction switching.

Asynchronous functions (MR, PL) override all clock activity: MR forces Q0–Q3 LOW regardless of clock edges; PL loads D0–D3 directly to Q0–Q3 on PL LOW, independent of CPU/CPD levels. TCU and TCD replicate CPU/CPD waveforms at terminal states (15→0 and 0→15), enabling ripple-cascaded multi-stage counters without external gating logic.

Key Specifications

Pinout & Package

TSSOP16 plastic thin shrink small outline package (SOT403-1), 16-pin, 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 4-bit synchronous up/down counter applications.

Compared with 74HC193PW,112, the 74HCT193PW,112 offers superior 5 V TTL interface compatibility without sacrificing speed or package footprint, while the SN74LS193N trades power efficiency and voltage flexibility for guaranteed legacy interoperability in strictly 5 V environments.

Availability

74HC193PW,112 is available at Aetrix Electronics and suitable for industrial PLC modules, automotive transmission controllers, test equipment frequency dividers, and legacy instrumentation timers requiring stable component supply and long-term lifecycle support.

Supply support for 74HC193PW,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 focused on high-volume, high-reliability logic, analog, and discrete components for automotive, industrial, and consumer markets.

The 74HC193 belongs to Nexperia's industry-standard HC logic family, designed for low-power, high-noise-immunity digital control in space-constrained and thermally demanding applications.

FAQ

Can 74HC193PW,112 operate reliably at 3.3 V?

Yes. The 74HC193PW,112 is fully specified from 2.0 V to 6.0 V, including robust performance at 3.3 V. VIH(min) = 2.1 V and VOL(max) = 0.26 V at IO = 4.0 mA ensure clean logic thresholds and noise margin in 3.3 V systems.

What happens if both CPU and CPD are HIGH simultaneously?

The device enters an undefined counting state per datasheet guidance. Only one clock input may be held HIGH at any time; simultaneous HIGH on CPU and CPD violates the recommended operating condition and may cause metastability or incorrect count transitions.

Is the TCU output truly synchronous with the CPU clock?

Yes. TCU goes LOW on the same LOW-to-HIGH CPU transition that advances the counter from 15 to 0, and returns HIGH on the subsequent CPU rising edge - duplicating the CPU waveform with a fixed propagation delay (11–32 ns depending on VCC and temperature).

How does the parallel load interact with ongoing count operations?

PL is asynchronous and unconditional: asserting PL LOW immediately loads D0–D3 into Q0–Q3, overriding any pending CPU/CPD edge or MR state. No clock edge is required, and the load occurs independently of current count value or clock phase.