Nexperia USA Inc. 74HC175DB,118

Overview

74HC175DB,118 from Nexperia is a quad positive-edge-triggered D-type flip-flop with asynchronous master reset (MR), 16-pin SO16 package, CMOS-level inputs, and complementary Q/Q̅ outputs per stage. It operates from 2.0 V to 6.0 V, supports -40 °C to +125 °C ambient range, and is used in synchronous logic control, data latching, and register file implementation in industrial microcontroller peripherals.

For engineers reviewing the 74HC175DB,118 datasheet, 74HC175DB,118 pinout, 74HC175DB,118 application, or 74HC175DB,118 equivalent, key selection criteria include propagation delay at 4.5 V (20–35 ns), set-up/hold timing (16 ns / 5 ns), supply voltage compatibility (2.0–6.0 V), and SO16 thermal derating (12.4 mW/K above 110 °C).

Technical Context

This device implements four independent edge-triggered D flip-flops sharing a common clock (CP) and asynchronous master reset (MR). Each stage accepts a dedicated Dn input and delivers true (Qn) and complement (Q̅n) outputs on the rising edge of CP, provided setup and hold times are met.

The MR input forces all Qn outputs LOW regardless of clock state, and internal clamp diodes allow safe interfacing to voltages exceeding VCC when current-limiting resistors are used. Input thresholds follow standard CMOS levels (VIH = 3.15 V min at VCC = 4.5 V; VIL = 1.35 V max).

Key Specifications

Pinout & Package

74HC175DB,118 uses the SOT109-1 package: plastic small outline, 16 leads, 3.9 mm body width, gull-wing leads, JEDEC MS-012 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HCT175DB,118, the HC version offers higher noise immunity in 5 V systems but requires stronger input drive; versus SN74HC175N, the DB variant enables automated assembly and superior thermal performance in compact layouts.

Availability

74HC175DB,118 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller parallel data latching, and digital test equipment pattern generation requiring stable component supply across extended temperature ranges.

Supply support for 74HC175DB,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

Nexperia is a global semiconductor expert delivering high-performance, reliable, and energy-efficient logic, analog, and discrete components for automotive, industrial, and consumer markets.

The 74HC logic family targets cost-sensitive, high-reliability industrial and computing applications where robustness, wide supply range, and JEDEC-compliant interoperability are essential design requirements.

FAQ

What is the absolute maximum supply voltage for 74HC175DB,118?

The absolute maximum VCC is +7.0 V, per IEC 60134 limiting values. Operation above 6.0 V violates recommended conditions and risks permanent damage. At 6.0 V, typical propagation delay drops to 16 ns, but ICC rises to 160 μA and power dissipation must be managed using the 12.4 mW/K derating curve above 110 °C.

Can 74HC175DB,118 drive a 50 pF load at 25 MHz reliably?

Yes: at VCC = 4.5 V and CL = 50 pF, the device achieves 75 MHz typical fmax and 20 ns typical tpd, providing 40 ns total cycle margin (1/25 MHz = 40 ns period). Measured transition time is 7 ns, ensuring clean edges into 50 pF loads without excessive ringing or overshoot.

Is the master reset (MR) input debounced internally?

No - MR is a purely combinational asynchronous input with no internal filtering or hysteresis. External RC filtering or firmware-controlled synchronization is required if MR is driven by mechanical switches or noisy control lines to prevent unintended resets during voltage transients.

Does 74HC175DB,118 support hot insertion or live insertion?

No - the device lacks hot-swap protection features such as power-on reset, Ioff partial power-down, or bus-hold. Applying VCC while signals are present may cause latch-up or excessive current due to internal clamp diode conduction; power sequencing (VCC before inputs) is mandatory per datasheet recommendations.