NXP Semiconductors HEF40175BTT,118

Overview

HEF40175BTT,118 from NXP Semiconductors is a quad edge-triggered D-type flip-flop IC with asynchronous master reset, operating from 3 V to 15 V supply, delivering four buffered Q and complementary Q̅ outputs, and used in synchronous digital logic circuits such as shift registers and pattern generators.

For engineers reviewing the HEF40175BTT,118 datasheet, HEF40175BTT,118 pinout, HEF40175BTT,118 application, or HEF40175BTT,118 equivalent, this device supports industrial-temperature (−40 °C to +125 °C) operation, offers 5 V/10 V/15 V parametric ratings, and provides edge-triggered data capture with independent asynchronous reset - critical for reliable state storage in timing-critical control logic.

Technical Context

The HEF40175BTT,118 implements four independent D-type flip-flops sharing a common clock (CP) and master reset (MR) input. Each flip-flop captures Dn on the LOW-to-HIGH transition of CP when MR is HIGH; MR asserted LOW forces all Qn = LOW and Q̅n = HIGH regardless of CP or D inputs.

It uses CMOS technology with fully static operation, symmetrical output drive capability, and input thresholds scaled to VDD (e.g., VIH = 11.0 V at VDD = 15 V), enabling interoperability across multiple supply rails while maintaining JEDEC JESD13-B compliance.

Key Specifications

Pinout & Package

TSSOP16 plastic thin shrink small outline package (4.4 mm body width, 16 leads, SOT403-1); 0.65 mm pitch; lead-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad D-type flip-flop applications.

Compared with CD40175BE and 74HC175PW, the HEF40175BTT,118 uniquely combines wide supply range (3–15 V), industrial temperature rating, integrated complementary outputs, and compact TSSOP16 packaging - making it the only choice for robust, multi-voltage, space-constrained digital control applications.

Availability

HEF40175BTT,118 is available at Aetrix Electronics and suitable for industrial control systems, programmable logic interfaces, and embedded timing circuits requiring stable component supply across extended temperature ranges and multi-rail voltage environments.

Supply support for HEF40175BTT,118 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 applications.

The HEF40175BTT,118 belongs to NXP's legacy 4000-series CMOS logic family, designed for high-noise-immunity, low-power, and wide-supply-voltage digital control in harsh industrial environments.

FAQ

What is the maximum clock frequency supported by the HEF40175BTT,118?

The HEF40175BTT,118 supports a maximum clock frequency of 45 MHz at VDD = 15 V, 30 MHz at VDD = 10 V, and 11 MHz at VDD = 5 V, as specified in the dynamic characteristics table under fmax. These values assume CL = 50 pF and Tamb = 25 °C; actual achievable frequency depends on load capacitance and operating temperature. The HEF40175BTT,118 datasheet confirms these limits using measured propagation delays and setup/hold time constraints.

Does the HEF40175BTT,118 include complementary outputs?

Yes, the HEF40175BTT,118 provides four complementary buffered outputs (Q̅0 to Q̅3) on pins 3, 6, 11, and 14. These are active simultaneously with the true outputs (Q0 to Q3) and exhibit matched drive strength and timing - eliminating the need for external inverters in applications requiring both polarities, such as differential bus drivers or toggle-mode circuits. This feature is explicitly defined in the pin description table and functional diagram of the HEF40175BTT,118 datasheet.

What is the recommended decoupling for the HEF40175BTT,118?

A 100 nF ceramic capacitor placed as close as possible to pins 8 (VSS) and 16 (VDD) is recommended for the HEF40175BTT,118 to suppress high-frequency supply noise and ensure stable switching. For systems with heavy simultaneous switching or long PCB traces, adding a bulk 1 µF–10 µF tantalum or aluminum electrolytic capacitor nearby further stabilizes the rail. This practice aligns with standard CMOS decoupling guidelines cited in the HEF40175BTT,118 application notes and layout recommendations.

Can the HEF40175BTT,118 operate at 3.3 V?

No, the HEF40175BTT,118 is not characterized or guaranteed for reliable operation at 3.3 V. Its minimum recommended supply voltage is 3 V, but static and dynamic specifications (e.g., VIH, VOL, tPHL) are only validated at 5 V, 10 V, and 15 V per the "5 V, 10 V, and 15 V parametric ratings" feature statement. At 3.3 V, timing margins degrade significantly and output drive may fall below usable thresholds. For 3.3 V systems, consider 74LVC175 or similar 3.3 V logic families instead of the HEF40175BTT,118.

Is the HEF40175BTT,118 pin-compatible with the CD40175BE?

No, the HEF40175BTT,118 is not pin-compatible with the CD40175BE. While both are quad D-type flip-flops with MR, CP, D0–D3, Q0–Q3, and Q̅0–Q̅3 functions, the CD40175BE uses a 14-pin DIP package (SOT38-4) with different pin assignments - for example, VDD is pin 14 on CD40175BE but pin 16 on HEF40175BTT,118. The HEF40175BTT,118 uses a 16-pin TSSOP (SOT403-1) footprint. Direct replacement requires PCB redesign.