Nexperia USA Inc. 74LVC823ADB,112

Overview

74LVC823ADB,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 bus interfacing between 3.3 V logic and legacy 5 V systems. Its flow-through pinout supports clean PCB routing in data-path applications such as industrial I/O expansion and memory address latching.

For engineers reviewing the 74LVC823ADB,112 datasheet, 74LVC823ADB,112 pinout, 74LVC823ADB,112 application, or 74LVC823ADB,112 equivalent, key selection criteria include 5 V tolerance on all I/Os, guaranteed operation up to +125 °C, tpd ≤ 8.0 ns at 3.3 V, fmax ≥ 150 MHz, and SO24 package compatibility with JEDEC SOT137-1 footprint.

Technical Context

This device implements nine synchronous D-flip-flops sharing a common clock (CP) input and individually controllable via CE and MR. The 3-state output buffer is decoupled from register operation - OE controls output impedance without affecting stored state. All inputs meet TTL voltage thresholds across the full 1.2 V–3.6 V VCC range.

Internal logic ensures setup/hold times are met for Dn and CE relative to CP's rising edge, with tsu = 1.3 ns and th = 1.3 ns at VCC = 3.3 V. Output skew is tightly controlled at ≤1.0 ns (typ), critical for parallel data capture integrity in high-speed digital interfaces.

Key Specifications

Pinout & Package

74LVC823ADB,112 is supplied in SO24 plastic small outline package (SOT137-1), 24-pin, 7.5 mm body width, with standard gull-wing leads and pin 1 index marker.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVC823ADB,112, the TSSOP variant reduces PCB area but increases assembly complexity, while the TI alternative offers second-source assurance without functional or timing trade-offs - both retain full 5 V I/O tolerance and −40 °C to +125 °C operation.

Availability

74LVC823ADB,112 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, memory address latching, and test equipment digital pattern generation requiring stable component supply across extended temperature ranges.

Supply support for 74LVC823ADB,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 miniaturization in high-volume applications.

The 74LVC series targets low-voltage, high-speed digital interfacing with 5 V tolerance - designed specifically for mixed-supply systems in industrial automation, automotive electronics, and communications infrastructure.

FAQ

What is the maximum clock frequency supported by 74LVC823ADB,112?

The 74LVC823ADB,112 supports a maximum clock frequency of 150 MHz at VCC = 3.0 V to 3.6 V and −40 °C to +125 °C ambient. At 3.3 V, typical fmax is 200 MHz, but the guaranteed minimum is 150 MHz per datasheet Table 7. This rating assumes proper signal integrity, load capacitance ≤50 pF, and clean power supply decoupling.

Can 74LVC823ADB,112 safely interface with 5 V microcontrollers?

Yes - all inputs and outputs are rated for 5.5 V absolute maximum and fully 5 V tolerant when VCC is 1.2 V to 3.6 V. Inputs accept 5 V logic levels directly, and outputs drive 5 V buses in high-Z or active states without damage or level-shifting circuitry, as confirmed in Section 1 and Table 4 of the datasheet.

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

MR is asynchronous and dominant: a LOW on MR forces all Qn outputs to LOW immediately, overriding CE, CP, and Dn states. CE only gates CP's effect on register updates; it has no influence on MR's reset action. This behavior is explicitly defined in Table 3 (Function Table) and Figure 4 (Logic Diagram).

Is the SO24 package of 74LVC823ADB,112 RoHS-compliant and lead-free?

Yes - the 74LVC823ADB,112 in SO24 (SOT137-1) package is manufactured per RoHS Directive 2011/65/EU and is lead-free, halogen-free, and compliant with Nexperia's environmental specifications. Full compliance documentation, including substance declarations and test reports, is available upon request from Aetrix Electronics.