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Home > Products > Integrated Circuits (ICs) > Logic > Flip Flops

Nexperia USA Inc. 74ALVCH16823DL,518

Name: 74ALVCH16823DL,518
Brand: Nexperia USA Inc.
SKU: 74ALVCH16823DL,518
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74ALVCH16823DL,518

Manufacturer:: Nexperia USA Inc.

Category:: Flip Flops

Package:: 56-BSSOP (0.295", 7.50mm Width)

Datasheet:: 74ALVCH16823DL,518.pdf

Description:: IC FF D-TYPE DUAL 9BIT 56SSOP

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Product details

Overview

74ALVCH16823DL,518 from Nexperia is an 18-bit edge-triggered D-type flip-flop with dual 9-bit sections, active-Low master reset (nMR), output enable (nOE), clock enable (nCE), and bus-hold inputs-designed for high-speed bus interface applications in industrial control and data acquisition systems operating from 1.2 V to 3.6 V supply.

For engineers reviewing the 74ALVCH16823DL,518 datasheet, 74ALVCH16823DL,518 pinout, 74ALVCH16823DL,518 application, or 74ALVCH16823DL,518 equivalent, this device delivers deterministic timing at up to 350 MHz (VCC = 3.3 V), supports 3-state bus driving with ±24 mA output drive, and eliminates external pull-ups via integrated bus-hold circuitry on all 18 data inputs.

Technical Context

The device implements two independent 9-bit D-flip-flop banks, each with dedicated nCP (rising-edge clock), nCE (active-Low clock enable), nMR (asynchronous active-Low reset), and nOE (active-Low 3-state control). Clock enable disables the clock buffer without affecting stored state, while master reset forces outputs LOW regardless of clock or enable status.

Bus-hold circuitry maintains valid logic levels on floating data inputs without external resistors; dynamic performance is specified across three voltage ranges (1.2–1.8 V, 2.3–2.7 V, 3.0–3.6 V) with propagation delays as low as 2.5 ns (t_pd, VCC = 3.3 V) and set-up/hold times down to 0.8 ns / 0.5 ns respectively.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Function	18-bit edge-triggered D-type flip-flop with 3-state outputs, split into two 9-bit sections
Supply Voltage Range	1.2 V to 3.6 V - enables direct interfacing with 1.8 V, 2.5 V, and 3.3 V logic domains
Max Clock Frequency	350 MHz at VCC = 3.3 V - supports high-throughput data latching in real-time bus systems
Propagation Delay (t_pd)	2.5 ns typical (VCC = 3.3 V) - ensures tight timing margins in synchronous backplane interfaces
Output Drive Strength	±24 mA at VCC = 3.0 V - drives 50 Ω transmission lines directly without external buffers
Bus-Hold Current	IBHH = −75 μA to −175 μA (HIGH), IBHL = +75 μA to +150 μA (LOW) - actively holds unused inputs at valid logic levels
Operating Temperature	−40 °C to +85 °C - qualified for industrial-grade embedded control and instrumentation environments

Pinout & Package

TSSOP56 plastic thin shrink small outline package (SOT364-1), 56-pin, body width 6.1 mm, with multiple VCC/GND pins for low-noise operation and minimized ground bounce.

Pin/Terminal	Circuit Role	Design Meaning
1D0–1D8, 2D0–2D8 (pins 54,52,51,49,48,47,45,44,43,42,41,40,38,37,36,34,33,31)	Data inputs (18 total)	Edge-triggered D inputs for respective flip-flops; all feature bus-hold circuitry
1Q0–1Q8, 2Q0–2Q8 (pins 3,5,6,8,9,10,12,13,14,15,16,17,19,20,21,23,24,26)	Data outputs (18 total)	3-state outputs controlled by nOE; high-impedance when nOE = HIGH
1CP, 2CP (pins 56, 29)	Clock inputs	Rising-edge sensitive; clocks corresponding 9-bit section independently
1CE, 2CE (pins 55, 30)	Clock enable inputs	Active-LOW; disables clock path to latch current state without resetting
1MR, 2MR (pins 1, 28)	Master reset inputs	Asynchronous active-LOW; forces all Q outputs LOW regardless of clock or enable state
1OE, 2OE (pins 2, 27)	Output enable inputs	Active-LOW; controls 3-state output drivers per section without affecting internal state
VCC (pins 7,22,35,50)	Power supply	Four distributed supply pins reduce IR drop and improve noise immunity
GND (pins 4,11,18,25,32,39,46,53)	Ground	Eight ground pins minimize ground bounce and support high-speed switching integrity

Key Features

Feature	Design Value
Wide supply range (1.2 V–3.6 V)	Enables single-chip interoperability across mixed-voltage system buses without level shifters
MULTIBYTE™ flow-through pinout	Minimizes PCB trace length and skew between input/output pairs for timing-critical routing
Integrated bus-hold on all 18 data inputs	Eliminates 18 external pull-up resistors, reducing BOM count and board space in sparse-bus configurations
Low-inductance multi-VCC/multi-GND layout	Reduces simultaneous switching noise (SSN) and improves signal integrity at >200 MHz operation
JEDEC-compliant ESD protection	HBM >2000 V and CDM >1000 V ensure robust handling during assembly and field operation

Applications

Industrial PLC Backplane Interface

Test Equipment Data Capture Buffer

Use Scenario: Latching parallel sensor data from analog-to-digital converters onto a 16-bit industrial backplane under real-time scan cycles.

IC Role / Device Role / Timing Role: 18-bit synchronous register providing deterministic setup/hold timing and bus isolation during CPU read cycles.

Use Value: ±24 mA drive capability directly loads 50 Ω traces; bus-hold prevents floating inputs during hot-swap events.

Use Scenario: Capturing high-speed digital waveform samples from FPGA-based logic analyzers before storage or analysis.

IC Role / Device Role / Timing Role: Edge-triggered data capture stage synchronized to system clock with independent reset and output gating.

Use Value: 2.5 ns t_pd and 0.5 ns t_h enable reliable sampling at 350 MHz; 3-state outputs allow multiplexing onto shared memory bus.

Automated Test Fixture Control

Communications Protocol Bridge Logic

Use Scenario: Isolating and buffering control signals between microcontroller I/O and relay driver arrays in ATE systems.

IC Role / Device Role / Timing Role: Level-shifting and noise-immune signal conditioning block with asynchronous reset for safe power-up sequencing.

Use Value: Dual-section architecture allows independent control of two 9-bit subsystems; nMR ensures known state at power-on.

Use Scenario: Interfacing legacy parallel control buses (e.g., IEEE-488 GPIB handshaking) to modern serial protocol engines.

IC Role / Device Role / Timing Role: Synchronizing handshake signals (DAV, NRFD, NDAC) with local clock domain while maintaining bus contention safety.

Use Value: 3-state outputs prevent bus conflicts during arbitration; wide VCC range accommodates mixed-voltage protocol translation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 18-bit bus-interface D-type flip-flop applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74ALVTH16823DGGR	TI part with TTL-compatible inputs (VIH = 2.0 V min), higher ICC (100 µA typ), same TSSOP56 package	Requires no level shifting when interfacing with 5 V TTL sources; less suitable for sub-2.0 V core logic	Select when integrating with legacy 5 V control logic; verify VIH compatibility with source drivers
74LVC16374APAG	ON Semiconductor 16-bit version (not 18-bit); lacks separate nMR per section; only one global OE	Supports 16-bit buses only; no independent reset per bank; reduced pin-level control granularity	Choose only if 16-bit width suffices and dual-section reset independence is not required

Compared with SN74ALVTH16823DGGR, the 74ALVCH16823DL,518 offers lower static current and wider voltage flexibility but requires external level translation for 5 V TTL inputs; versus 74LVC16374APAG, it provides true 18-bit width and per-section reset/enable control essential for asymmetric bus partitioning.

Availability

74ALVCH16823DL,518 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automated test equipment data capture, communications protocol bridges, and automated test fixture control requiring stable component supply across extended temperature and mixed-voltage environments.

Supply support for 74ALVCH16823DL,518 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 leading semiconductor manufacturer specializing in high-performance logic, analog, and discrete components for industrial, automotive, and computing applications.

The 74ALVCH16823 belongs to Nexperia's advanced low-voltage CMOS logic family, engineered for high-speed, low-power bus interface applications demanding precise timing, noise resilience, and mixed-voltage interoperability.

FAQ

What is the minimum recommended VCC for guaranteed operation at 350 MHz?

The 350 MHz maximum frequency is specified only at VCC = 3.0 V to 3.6 V. At VCC = 3.3 V, t_pd is 2.5 ns typical and f_max reaches 350 MHz. Below 3.0 V, maximum frequency drops significantly: 300 MHz at 2.7 V, 150 MHz at 2.5 V. Operation below 1.2 V is outside specification and not supported.

Can the 74ALVCH16823DL,518 be used with 5 V TTL input signals?

No - its absolute maximum input voltage is VCC + 0.5 V, and VIH is specified as 2.0 V min at VCC = 2.7–3.6 V. Direct connection to 5 V TTL violates limiting values and risks damage. A level translator (e.g., TXB0108) or resistor-divider network is required for safe interfacing.

How does the bus-hold circuit behave when an input is driven LOW?

When a bus-hold input is externally driven LOW, the internal bus-hold transistor sinks current (IBHL = +75–150 μA at VCC = 3.0 V) to reinforce the LOW state. This strengthens noise immunity but adds minor DC loading; total input current remains within ±50 μA limits per JEDEC JESD8-5.

Is there any functional difference between the 'DL' and 'DGG' suffix variants?

Yes - 'DL' denotes SSOP56 (SOT371-1), while 'DGG' denotes TSSOP56 (SOT364-1). The 74ALVCH16823DL,518 uses the TSSOP56 package (SOT364-1), confirmed by ordering table and package outline Fig. 10. SSOP56 was discontinued per Rev. 3 history; only TSSOP56 is currently manufactured and supported.

74ALVCH16823DL,518 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: 74ALVCH

Package/Case:: 56-BSSOP (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

Function:: Master Reset

Type:: D-Type

Output Type:: Tri-State, Non-Inverted

Number of Elements:: 2

Number of Bits per Element:: 9

Clock Frequency:: 350 MHz

Max Propagation Delay @ V, Max CL:: 3.7ns @ 3.3V, 50pF

Trigger Type:: Positive Edge

Current - Output High, Low:: 24mA, 24mA

Voltage - Supply:: 2.3V ~ 2.7V, 3V ~ 3.6V

Current - Quiescent (Iq):: -

Input Capacitance:: 5 pF

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 56-SSOP

74ALVCH16823DL,518 FAQ

1.How can I place an order for 74ALVCH16823DL,518 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74ALVCH16823DL,518 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 74ALVCH16823DL,518 reliable?

The price and inventory of 74ALVCH16823DL,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVCH16823DL,518 is usually 5 days.

3.What payment methods are accepted for 74ALVCH16823DL,518?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVCH16823DL,518 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74ALVCH16823DL,518?

74ALVCH16823DL,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74ALVCH16823DL,518 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 74ALVCH16823DL,518?

For technical support, including 74ALVCH16823DL,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVCH16823DL,518 requirements.

6.How does Aetrix verify that 74ALVCH16823DL,518 is sourced from the original manufacturer or authorized distributors?

All 74ALVCH16823DL,518 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74ALVCH16823DL,518 meets industry standards.

7.What is the process for return or replacement of 74ALVCH16823DL,518?

All 74ALVCH16823DL,518 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVCH16823DL,518, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 74ALVCH16823DL,518 part is unused and in its original packaging.

Return procedure for 74ALVCH16823DL,518:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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