NXP Semiconductors 74AHC374D,112

Overview

74AHC374D,112 from Nexperia is an octal positive-edge-triggered D-type flip-flop with 3-state outputs, designed for data latching and bus isolation in digital logic systems. It operates across 2.0 V–5.5 V supply, features overvoltage-tolerant CMOS inputs (up to 5.5 V), supports -40 °C to +125 °C ambient range, and delivers 4.4 ns typical propagation delay at 5 V with 15 pF load.

For engineers reviewing the 74AHC374D,112 datasheet, 74AHC374D,112 pinout, 74AHC374D,112 application, or 74AHC374D,112 equivalent, key selection criteria include edge-trigger timing integrity, 3-state bus contention control, mixed-voltage interface capability, and industrial-temperature reliability in synchronous data path designs.

Technical Context

This device implements eight independent D-type flip-flops sharing a common clock (CP) and active-low output enable (OE). Each flip-flop captures the logic state of its D-input on the LOW-to-HIGH transition of CP, meeting 3.0 ns setup and 2.0 ns hold time requirements at 5 V. OE assertion places all Q outputs in high-impedance mode without altering internal register states.

Input tolerance to 5.5 V enables safe interfacing with higher-voltage logic families, while Schmitt-trigger input actions enhance noise immunity. The device uses standard CMOS level inputs and exhibits balanced tPLH/tPHL propagation delays, supporting clean signal sampling in high-speed digital control and address/data bus applications.

Key Specifications

Pinout & Package

74AHC374D,112 is housed in a plastic small outline package (SO20, SOT163-1) with 20 leads and 7.5 mm body width. Pin 1 is marked by a notch or dot; pin numbering follows standard SOIC convention counterclockwise from top-left corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHCT374D,112, the 74AHC374D,112 offers broader voltage interoperability and superior noise immunity via Schmitt inputs; versus SN74LVC374APWR, it trades package size and 3.3 V efficiency for 5.5 V overvoltage resilience and extended temperature support.

Availability

74AHC374D,112 is available at Aetrix Electronics and suitable for industrial automation, test equipment, and microcontroller peripheral interfacing requiring stable component supply across extended temperature ranges and mixed-voltage environments.

Supply support for 74AHC374D,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 delivering high-performance logic, analog, and MOSFET solutions with emphasis on reliability, efficiency, and manufacturability for industrial and automotive markets.

The 74AHC374D,112 belongs to Nexperia's advanced high-speed CMOS logic family, engineered for robust data latching and bus isolation in noise-prone, wide-temperature, and mixed-supply digital systems.

FAQ

What is the maximum clock frequency supported by the 74AHC374D,112?

The 74AHC374D,112 supports a maximum clock frequency of 130 MHz (typical) at VCC = 4.5–5.5 V with 15 pF load, and 85 MHz under worst-case conditions (125 °C, 50 pF load). This is derived from its 4.4 ns typical propagation delay and 5.0 ns minimum pulse width specification, enabling reliable operation in high-speed synchronous logic designs.

Can the 74AHC374D,112 interface safely with 5 V logic while powered at 3.3 V?

Yes - the 74AHC374D,112 features overvoltage-tolerant inputs rated to 5.5 V regardless of VCC level. When powered at 3.3 V, it accepts 5 V logic signals on all inputs (Dn, CP, OE) without damage or level-shifting circuitry, making it ideal for bridging 3.3 V microcontrollers to 5 V peripherals.

How does the 3-state output enable (OE) behave relative to internal flip-flop state?

The OE input is asynchronous and only affects output driver state: when OE is HIGH, all Q outputs enter high-impedance mode without altering the stored logic states inside the eight flip-flops. Internal registers retain their last-latched values and resume driving valid logic levels immediately upon OE going LOW.

Is the 74AHC374D,112 suitable for automotive applications?

No - the 74AHC374D,112 is not automotive-qualified. It is specified for industrial temperature range (-40 °C to +125 °C) but lacks AEC-Q100 qualification, automotive-grade screening, or guaranteed performance under automotive-specific stress conditions such as extended high-temperature life testing or board-level ESD robustness beyond standard HBM/CDM levels.