Nexperia USA Inc. 74LVC823AD,112

Overview

74LVC823AD,112 from Nexperia is a 9-bit positive-edge-triggered D-type flip-flop with independent clock enable (CE), master reset (MR), and 3-state outputs (Q0–Q8), operating from 1.2 V to 3.6 V supply. It features 5 V tolerant inputs/outputs, enabling mixed-voltage interfacing between 3.3 V logic and legacy 5 V systems, and supports industrial temperature range (−40 °C to +125 °C) in SO24 package. Used in bus-oriented data latching and level translation in industrial control backplanes.

For engineers reviewing the 74LVC823AD,112 datasheet, 74LVC823AD,112 pinout, 74LVC823AD,112 application, or 74LVC823AD,112 equivalent, key selection criteria include 5 V tolerance on all I/Os, 3-state output control via OE, propagation delay ≤8.0 ns at 3.3 V, f_MAX ≥150 MHz, and SO24 thermal performance up to +125 °C ambient.

Technical Context

This device implements nine synchronous D-flip-flops sharing a common clock (CP) input and individual D inputs (D0–D8), with asynchronous active-low MR controlling all registers simultaneously. Clock enable (CE) operates asynchronously to freeze register state without affecting CP edge sensitivity.

The 3-state output buffer is fully decoupled from register operation: OE controls output impedance independently, allowing data hold while outputs are tri-stated. Input clamping diodes and ESD protection (HBM >2000 V) support robust interfacing in noisy industrial environments.

Key Specifications

Pinout & Package

74LVC823AD,112 is housed in SO24 (SOT137-1): plastic small outline package, 24 leads, 7.5 mm body width, standard JEDEC MS-013 footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 9-bit D-type flip-flop applications.

Compared with SN74LVC823APW and 74LVC823ABQ, the 74LVC823AD,112 offers the highest mechanical robustness and easiest hand-soldering/reflow compatibility in SO24, making it optimal for prototyping, repairable systems, and cost-sensitive industrial deployments where thermal margin exceeds 119 °C.

Availability

74LVC823AD,112 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, test equipment pattern generators, and medical imaging data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVC823AD,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 optimized for efficiency, reliability, and manufacturability in high-volume applications.

The 74LVC series targets low-voltage, mixed-signal interfacing with emphasis on voltage translation, bus buffering, and industrial-grade robustness - designed specifically for systems integrating legacy 5 V components with modern low-power controllers.

FAQ

What is the maximum input voltage the 74LVC823AD,112 can tolerate on its I/O pins?

The device supports input voltages from −0.5 V to +6.5 V absolute maximum, with functional 5 V tolerance (0 V to 5.5 V) on all I/O pins including Dn, Qn, OE, MR, CE, and CP. This allows direct connection to 5 V logic without external clamping or level-shifting circuitry, provided V_CC remains within 1.2 V to 3.6 V.

How does the master reset (MR) interact with clock enable (CE) and output enable (OE)?

MR is asynchronous and dominant: asserting MR LOW forces all Qn outputs to LOW immediately, regardless of CE or OE state. CE only affects register updates on CP edges; OE only affects output impedance. MR overrides both functions - the flip-flops enter reset state even if CE = HIGH or OE = HIGH.

Can the 74LVC823AD,112 operate reliably at 1.2 V supply?

Yes - the device is fully specified down to 1.2 V, with guaranteed t_pd ≤20 ns and f_MAX ≥100 MHz at that voltage. Static parameters including VIH/VIL thresholds and VOL/VOH levels are characterized across the full 1.2–3.6 V range, enabling use in ultra-low-power battery-operated systems with regulated 1.2 V rails.

What is the significance of the flow-through pinout architecture in SO24 packaging?

The flow-through layout places D0–D8 on one side (pins 3–10) and corresponding Q0–Q8 on the opposite side (pins 15–23), enabling straight PCB traces with minimal layer transitions. This reduces signal skew, crosstalk, and stub length - critical for maintaining timing margins in high-speed parallel bus applications such as memory-mapped I/O or sensor data aggregation.