Nexperia USA Inc. 74AHCT273D-Q100J

Overview

74AHCT273D-Q100 from Nexperia is an automotive-grade octal positive-edge-triggered D-type flip-flop with synchronous data capture and asynchronous master reset (MR). It operates from 4.5 V to 5.5 V, delivers propagation delays as low as 4.0 ns (CL = 15 pF), supports -40 °C to +125 °C ambient operation, and features TTL-compatible inputs for direct interfacing with legacy microcontrollers in engine control units.

For engineers reviewing the 74AHCT273D-Q100 datasheet, 74AHCT273D-Q100 pinout, 74AHCT273D-Q100 application, or 74AHCT273D-Q100 equivalent, this device serves as a robust, AEC-Q100 Grade 1–qualified register for automotive data latching, bus buffering, and clock-synchronized I/O expansion where deterministic timing, noise immunity, and fail-safe reset are required.

Technical Context

This device implements eight independent D-type flip-flops sharing a common clock (CP) and active-low master reset (MR). Each flip-flop captures the state of its D input on the LOW-to-HIGH transition of CP, provided setup (3.0 ns) and hold (1.0 ns) times are met. MR overrides clock and data, forcing all Q outputs LOW regardless of CP or D states.

Input levels conform to TTL thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V), enabling seamless integration with 5 V microcontrollers and logic families. Overvoltage-tolerant inputs (up to 5.5 V) allow safe operation in mixed-voltage domains without level-shifting circuitry.

Key Specifications

Pinout & Package

74AHCT273D-Q100 is supplied in SO20 (SOT163-1) package: plastic small outline, 20 leads, 7.5 mm body width, gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHC273D-Q100 and SN74LV273AQPWRQ1, the 74AHCT273D-Q100 uniquely balances TTL compatibility, sub-10 ns timing, and AEC-Q100 Grade 1 qualification-making it optimal for legacy 5 V automotive control nodes requiring drop-in reliability and minimal redesign effort.

Availability

74AHCT273D-Q100 is available at Aetrix Electronics and suitable for engine control units, body control modules, instrument clusters, and ADAS subsystems requiring stable component supply across automotive production lifecycles.

Supply support for 74AHCT273D-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 focused on essential efficiency technologies, delivering high-performance logic, discrete, and MOSFET solutions optimized for automotive, industrial, and mobile markets.

The 74AHCT273D-Q100 belongs to Nexperia's automotive-qualified logic portfolio, designed specifically for robust, low-latency data registration in safety-critical vehicle subsystems operating across extended temperature ranges.

FAQ

What is the maximum clock frequency supported by the 74AHCT273D-Q100?

The device supports up to 120 MHz maximum frequency at VCC = 5.0 V and CL = 15 pF, and 70 MHz at CL = 50 pF over the full -40 °C to +125 °C range. These values derive directly from measured tpd (4.0–9.5 ns) and fmax test data in Table 7 of the official Nexperia datasheet Rev. 3.

Can the 74AHCT273D-Q100 operate with a 3.3 V supply?

No. The 74AHCT273D-Q100 is specified only for 4.5 V to 5.5 V operation per Table 5. Its TTL-compatible inputs require VIH ≥ 2.0 V, but internal logic thresholds and timing parameters are not characterized below 4.5 V. For 3.3 V systems, use the pin-compatible 74AHC273D-Q100 instead.

How does the master reset (MR) interact with the clock signal?

MR is asynchronous and dominant: when MR is LOW, all Q outputs force LOW immediately-regardless of CP state, D input values, or clock edges. This behavior is confirmed in Table 3 (Function Table) and Section 6 (Functional Description), enabling immediate system-wide reset without waiting for clock alignment.

Is the SO20 package (SOT163-1) lead-free and RoHS compliant?

Yes. Per Nexperia's product compliance documentation and ordering information in Table 1, the 74AHCT273D-Q100 in SO20 packaging meets RoHS Directive 2011/65/EU and is manufactured with lead-free terminations. Full compliance data is available in Nexperia's official environmental reports for SOT163-1.