Nexperia USA Inc. 74HCT163PW-Q100J

Overview

74HCT163PW-Q100 from Nexperia is an AEC-Q100 Grade 1 qualified synchronous 4-bit binary counter with parallel load, synchronous reset, and look-ahead carry-operating from -40 °C to +125 °C, TTL-compatible input levels (V_IL = 0.8 V, V_IH = 2.0 V), and 5.0 V nominal supply. It delivers glitch-free counting in automotive timing control, engine management subsystems, and digital dashboard counters.

For engineers reviewing the 74HCT163PW-Q100 datasheet, 74HCT163PW-Q100 pinout, 74HCT163PW-Q100 application, or 74HCT163PW-Q100 equivalent, this device supports precise modulus-N counter design via synchronous preset and terminal count (TC) output, enables cascaded multi-stage counting with CEP/CET control, and provides deterministic timing at up to 45 MHz (V_CC = 4.5 V, CL = 15 pF).

Technical Context

This counter implements four edge-triggered D-type flip-flops with synchronous clocking on the positive-going edge of CP. All state transitions-including parallel load (via active-low PE), synchronous reset (via active-low MR), and count enable (CEP and CET both HIGH)-are synchronized to CP, eliminating race conditions and output glitches.

The internal look-ahead carry logic generates TC when Q0–Q3 = HHHH and CET = HIGH, producing a pulse width ≈ t_PHL(Q0). TC feeds directly into the CET input of the next stage, enabling seamless n-bit cascading without external delay compensation.

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, RoHS-compliant, suitable for automated SMT assembly in high-reliability automotive PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC163PW-Q100, the 74HCT163PW-Q100 ensures reliable interface with legacy 5 V TTL logic while maintaining AEC-Q100 compliance; versus SN74LV163APWRE4, it guarantees Grade 1 thermal performance and eliminates qualification overhead for under-hood deployment.

Availability

74HCT163PW-Q100 is available at Aetrix Electronics and suitable for engine control units, digital instrument clusters, and ADAS camera synchronization requiring stable component supply across automotive production lifecycles.

Supply support for 74HCT163PW-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 logic, discrete, and MOSFET solutions optimized for automotive, industrial, and mobile applications-with focus on reliability, efficiency, and AEC-Q100 compliance.

The 74HCT163PW-Q100 belongs to Nexperia's automotive-qualified logic family, designed specifically for deterministic timing in powertrain, chassis, and driver-assistance systems where glitch-free operation and thermal robustness are mandatory.

FAQ

What is the maximum clock frequency supported by the 74HCT163PW-Q100?

The 74HCT163PW-Q100 achieves a maximum clock frequency of 45 MHz at V_CC = 4.5 V with 15 pF load capacitance, as specified in Table 7 of the datasheet. At 5.0 V and 15 pF, it reaches 50 MHz. Performance degrades linearly above 125 °C ambient due to increased propagation delay-designers must verify timing margins at worst-case junction temperature.

How does the synchronous reset differ from asynchronous reset in practical use?

Synchronous reset (MR) only takes effect on the next rising edge of CP, ensuring all flip-flops reset simultaneously and eliminating metastability or partial-state glitches. This guarantees deterministic behavior in cascaded counters and avoids race conditions that could corrupt downstream logic-unlike asynchronous reset, which may cause unpredictable intermediate states.

Can the 74HCT163PW-Q100 be used in 3.3 V systems?

No-the 74HCT163PW-Q100 is specified only for 4.5–5.5 V operation per Table 5. Its TTL-compatible inputs require V_IH ≥ 2.0 V, but output drive strength and timing parameters are not characterized below 4.5 V. For 3.3 V applications, use the AEC-Q100-qualified 74LVC163 or SN74LV163A with appropriate level translation.

What is the function of the CEP and CET pins in cascade configuration?

CEP (count enable parallel) and CET (count enable carry) must both be HIGH for counting to occur. CET also gates the TC output: TC goes HIGH only when CET = HIGH and Q0–Q3 = 1111. In cascading, TC of Stage N drives CET of Stage N+1, while CEP remains tied HIGH-enabling modular, scalable counter depth without external gating logic.