NXP Semiconductors 74LVC823ADB,118

Overview

74LVC823ADB,118 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, supports mixed-voltage bus interfacing (3.3 V core ↔ 5 V peripherals), and delivers ≤10.0 ns propagation delay at 3.3 V for high-speed register applications in industrial control and data acquisition systems.

For engineers reviewing the 74LVC823ADB,118 datasheet, 74LVC823ADB,118 pinout, 74LVC823ADB,118 application, or 74LVC823ADB,118 equivalent, this device serves as a bus-oriented 9-bit latch with precise timing control, 5 V tolerance, and thermal-enhanced TSSOP24 packaging - critical for signal integrity and voltage translation in compact embedded designs.

Technical Context

The 74LVC823ADB,118 implements nine independent D-type latches synchronized to the rising edge of CP, with CE enabling/disabling clock action without affecting stored state. MR asynchronously resets all Qn outputs to LOW, while OE independently controls 3-state output drivers - decoupling register operation from bus drive timing.

Its CMOS architecture ensures low static current (≤40 μA at 3.6 V) and dynamic power dissipation governed by CPD = 16.4 pF (VCC = 3.3 V), supporting high-frequency operation up to 150 MHz at 3.0–3.6 V while maintaining <1.5 ns output skew across all nine outputs.

Key Specifications

Pinout & Package

74LVC823ADB,118 is packaged in TSSOP24 (SOT355-1): plastic thin shrink small outline package, 24 leads, body width 4.4 mm, lead pitch 0.65 mm, JEDEC MO-153 compliant.

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,118, the 74LVC823APW,118 offers identical electrical and thermal behavior with logistics differentiation, while SN74LVC823APWR provides second-source assurance with marginally relaxed timing and ESD specs - both require no PCB changes but demand validation of assembly and reliability requirements.

Availability

74LVC823ADB,118 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and test equipment requiring stable component supply, extended temperature operation, and 5 V bus compatibility.

Supply support for 74LVC823ADB,118 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 high-volume, high-reliability logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVC823ADB,118 belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, engineered for low-power, mixed-voltage interfacing in space-constrained and thermally demanding applications.

FAQ

What is the maximum clock frequency supported by the 74LVC823ADB,118?

The 74LVC823ADB,118 supports a maximum clock frequency of 150 MHz when operated at VCC = 3.0 V to 3.6 V and ambient temperatures up to +125 °C. At lower supply voltages (e.g., 2.7 V), the maximum frequency drops to 120 MHz. These values are guaranteed across the full industrial temperature range and reflect worst-case timing under load conditions specified in the datasheet.

Does the 74LVC823ADB,118 require external pull-up resistors on its outputs?

No, the 74LVC823ADB,118 does not require external pull-up resistors on its Q0–Q8 outputs. Its 3-state outputs are actively driven HIGH or LOW when enabled (OE = LOW) and present high-impedance (not floating) when disabled (OE = HIGH). Pull-ups are unnecessary unless required by downstream logic thresholds - which is not typical for standard CMOS or TTL loads interfaced via this device.

Can the 74LVC823ADB,118 be used with a 5 V microcontroller driving its inputs?

Yes, the 74LVC823ADB,118 supports 5 V tolerant inputs - meaning it can safely accept 0 V to 5.5 V signals on all input pins (D0–D8, CP, CE, MR, OE) while powered from a 1.2 V to 3.6 V VCC supply. This allows direct connection to 5 V microcontrollers without level-shifting circuitry, simplifying design and reducing BOM cost.

What is the purpose of the CE (clock enable) pin on the 74LVC823ADB,118?

The CE pin on the 74LVC823ADB,118 is an active-LOW control that gates the clock signal: when CE = LOW, the rising edge of CP propagates to update all nine flip-flops; when CE = HIGH, the register holds its current state regardless of CP transitions. This enables precise data capture windows and eliminates spurious updates during bus arbitration or partial writes - a key feature for deterministic control in synchronous systems.

Is the 74LVC823ADB,118 pin-compatible with other packages of the same part number?

No, the 74LVC823ADB,118 is specifically the TSSOP24 (SOT355-1) variant. While the 74LVC823A logic function is identical across SO24 (74LVC823AD), TSSOP24 (74LVC823ADB), and DHVQFN24 (74LVC823ABQ) packages, their pinouts differ - particularly in terminal numbering and physical layout. The 74LVC823ADB,118 uses the SOT355-1 pin map; substituting another package requires PCB redesign due to incompatible footprint and pin assignments.