Nexperia USA Inc. 74AHC273D-Q100J

Overview

74AHC273D-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 across 2.0–5.5 V supply, supports -40 °C to +125 °C ambient, features overvoltage-tolerant inputs up to 5.5 V, and delivers propagation delays as low as 4.2 ns (VCC = 5 V, CL = 15 pF). It serves as a robust register buffer in automotive body control modules requiring deterministic timing and AEC-Q100 Grade 1 compliance.

For engineers reviewing the 74AHC273D-Q100 datasheet, 74AHC273D-Q100 pinout, 74AHC273D-Q100 application, or 74AHC273D-Q100 equivalent, this page provides verified functional architecture, SO20 package terminal mapping, automotive temperature-range validation, CMOS-level input compatibility, and direct comparison against 74AHCT273D-Q100 and SN74AHC273QPWRQ1 for register-stage selection.

Technical Context

This device implements eight independent D-type flip-flops sharing a common clock (CP) and active-low master reset (MR), enabling synchronized latching of eight parallel data bits on each LOW-to-HIGH CP transition. Its Schmitt-trigger inputs enhance noise immunity in noisy automotive environments, while overvoltage tolerance allows interfacing between 3.3 V logic and 5 V subsystems without level shifters.

The logic diagram confirms edge-triggered behavior with no internal feedback paths-outputs Q0–Q7 reflect only the state of D0–D7 sampled at the CP rising edge, provided setup (3.0 ns min) and hold (1.0 ns min) times are met. MR overrides all clock and data activity, forcing outputs LOW regardless of CP or D states.

Key Specifications

Pinout & Package

74AHC273D-Q100 uses the SO20 plastic small outline package (SOT163-1), 20-pin, 7.5 mm body width, with standard dual-in-line pin spacing (1.27 mm). Pin 1 is marked by a notch or dot; pin numbering follows counter-clockwise convention from top-left corner when viewed with marking side up.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHCT273D-Q100, the 74AHC273D-Q100 offers superior noise immunity and wider input voltage margin for modern mixed-signal automotive designs; versus SN74AHC273QPWRQ1, it provides identical functionality in Nexperia's SO20 package optimized for wave-solder reflow and AOI inspection.

Availability

74AHC273D-Q100 is available at Aetrix Electronics and suitable for automotive body control units, instrument cluster display drivers, and engine control module I/O expansion requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74AHC273D-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, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74AHC273D-Q100 belongs to Nexperia's automotive-qualified AHC logic family, designed specifically for robust, low-power register functions in harsh-temperature vehicle subsystems where reliability and signal integrity are non-negotiable.

FAQ

What is the maximum clock frequency supported by the 74AHC273D-Q100?

The 74AHC273D-Q100 supports up to 120 MHz maximum frequency at VCC = 5.0 V and CL = 15 pF, and 80 MHz at CL = 50 pF. These values are guaranteed across -40 °C to +125 °C per AEC-Q100 test conditions, with propagation delay (tpd) as low as 4.2 ns enabling tight timing closure in high-speed register chains.

Can the 74AHC273D-Q100 interface directly with a 3.3 V microcontroller and 5 V display driver?

Yes. Its overvoltage-tolerant inputs accept up to 5.5 V regardless of VCC, allowing direct connection to 5 V display drivers while powered from a 3.3 V rail. Outputs swing rail-to-rail (VOH ≈ VCC, VOL ≈ 0 V), so a 3.3 V supply yields CMOS-compatible levels for the MCU, and external pull-ups or level shifters are unnecessary.

How does the master reset (MR) behave during power-up sequences?

The MR pin is active-low and asynchronous: asserting MR LOW forces all Qn outputs LOW immediately, overriding CP and D inputs. During power-up, if MR is held LOW until VCC stabilizes (≥2.0 V), then released, the device enters a known state (all outputs LOW) before accepting clocked data - a key feature for fail-safe initialization in automotive ECUs.

Is the SO20 package (SOT163-1) compatible with automated optical inspection (AOI)?

The SO20 package itself lacks side-wettable flanks, unlike the DHVQFN20 variant (SOT764-1). However, Nexperia's SO20 implementation meets IPC-A-610 Class 2 standards for solder joint geometry, and AOI systems configured for gull-wing leads can reliably inspect coplanarity, solder volume, and bridging - confirmed by Nexperia's SOT163-1 package drawing revision history and process documentation.