Nexperia USA Inc. 74HC193PW-Q100J

Overview

74HC193PW-Q100 from Nexperia is an AEC-Q100 Grade 1 qualified, synchronous 4-bit binary up/down counter with asynchronous parallel load (PL) and master reset (MR), operating from 2.0 V to 6.0 V across –40 °C to +125 °C. It features separate CPU/CPD clock inputs, active-low TCU/TCD terminal count outputs, and TTL-compatible input thresholds for 74HCT variant - used in automotive body control modules for gear position sequencing and odometer logic.

For engineers reviewing the 74HC193PW-Q100 datasheet, 74HC193PW-Q100 pinout, 74HC193PW-Q100 application, or 74HC193PW-Q100 equivalent, key selection criteria include its dual-edge-triggered counting behavior, guaranteed asynchronous load/reset timing under automotive temperature extremes, propagation delay ≤65 ns at 4.5 V, and TSSOP16 package compatibility with high-density PCB layouts.

Technical Context

This device implements four edge-triggered D-type flip-flops with synchronous up/down counting controlled by mutually exclusive CPU (LOW-to-HIGH) and CPD (LOW-to-HIGH) clocks. Terminal count outputs TCU and TCD replicate clock waveforms at maximum (1111) and minimum (0000) states, enabling multistage cascading without external logic.

Asynchronous functions - PL (active LOW) and MR (active HIGH) - override all clock activity and operate independently of clock edges. Input clamp diodes support interfacing to voltages exceeding VCC when used with current-limiting resistors, enhancing robustness in noisy automotive environments.

Key Specifications

Pinout & Package

TSSOP16 plastic thin shrink small outline package (SOT403-1), 16-pin, 4.4 mm body width, lead pitch 0.65 mm - optimized for automated SMT assembly and thermal performance in compact automotive ECUs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HCT193PW-Q100, this part offers CMOS input thresholds better suited for mixed-voltage 3.3 V/5 V systems, while SN74LV193APWRE4 trades automotive qualification for lower static power but lacks temperature robustness for engine bay deployment.

Availability

74HC193PW-Q100 is available at Aetrix Electronics and suitable for automotive body control units, powertrain control modules, and infotainment system peripherals requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC193PW-Q100 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, reliable components for automotive, industrial, and mobile markets - with leadership in logic, MOSFETs, and ESD protection.

This device belongs to Nexperia's automotive-qualified HC logic family, designed specifically for robust, low-power digital control in harsh automotive environments - emphasizing AEC-Q100 compliance, wide VCC tolerance, and noise-immune signal integrity.

FAQ

What is the minimum pulse width required on CPU or CPD for reliable counting?

The minimum HIGH or LOW pulse width on CPU or CPD is 21 ns at VCC = 4.5 V and –40 °C to +85 °C ambient. At full automotive range (–40 °C to +125 °C), it increases to 30 ns. This ensures sufficient setup/hold time for internal flip-flop triggering and avoids metastability in safety-critical counting paths.

Can PL and MR be asserted simultaneously, and what is the priority?

Yes, PL and MR can be asserted together, but MR has absolute priority: when MR is HIGH, all outputs (Q0–Q3) force LOW regardless of PL state or data inputs. This hard reset behavior is explicitly defined in the function table and guarantees deterministic initialization in fault-recovery sequences.

How does TCU behave when counting from 14 to 15 and then to 0?

TCU goes LOW on the LOW-to-HIGH transition of CPU that advances the count from 14 to 15. It remains LOW until the next CPU HIGH transition - effectively duplicating the CPU waveform for one full cycle. This behavior enables direct connection to the CPU input of the next-stage counter without additional edge-detection circuitry.

Is the TSSOP16 package (SOT403-1) pin-compatible with SO16 (SOT109-1) for this device?

Yes - both 74HC193PW-Q100 (TSSOP16/SOT403-1) and 74HC193D-Q100 (SO16/SOT109-1) share identical pin numbering, signal mapping, and electrical specifications. The only difference is mechanical: TSSOP offers 38 % smaller footprint and improved thermal resistance, enabling denser PCB layouts in space-constrained ECUs.