Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Logic > Latches

Nexperia USA Inc. 74HC573D/S400,118

Name: 74HC573D/S400,118
Brand: Nexperia USA Inc.
SKU: 74HC573D/S400,118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 74HC573D/S400,118

Manufacturer:: Nexperia USA Inc.

Category:: Latches

Package:: 20-SOIC (0.295", 7.50mm Width)

Datasheet:: 74HC573D/S400,118.pdf

Description:: IC D-TYPE TRANSP SGL 8:8 20SO

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:84,000

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

74HC573D/S400,118 from Nexperia is an octal transparent latch with 3-state outputs, designed for bus-oriented bidirectional data transfer in digital systems. It features 2V–6V supply operation, typical propagation delay of 14ns at 4.5V, and ±7.8mA output drive capability. Used in microcontroller I/O expansion and address/data bus latching applications.

For engineers reviewing the 74HC573D/S400,118 datasheet, 74HC573D/S400,118 pinout, 74HC573D/S400,118 application, or 74HC573D/S400,118 equivalent, key selection criteria include latch enable timing, output drive strength, supply voltage range compatibility, and 3-state bus contention management.

Technical Context

This device implements eight independent D-type transparent latches with common Output Enable (OE) and Latch Enable (LE) controls. Each latch captures data on the D input when LE is HIGH and holds it when LE transitions LOW; OE controls tri-state output buffer activation.

It operates within the high-speed CMOS (HC) logic family, ensuring TTL-compatible input thresholds and low static power consumption (<1µA at 25°C). Input hysteresis provides noise immunity on control signals, and outputs are specified for rail-to-rail swing under defined load conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Family	74HC - high-speed CMOS with TTL-compatible inputs and low power
Supply Voltage Range	2.0V to 6.0V - supports mixed-voltage system interfacing
Propagation Delay (t_PD)	14ns max at V_CC = 4.5V - enables reliable operation up to ~35MHz latch-enable toggle rate
Output Drive (I_OH/I_OL)	±7.8mA at V_CC = 4.5V - sufficient to drive 10 LS-TTL loads or 20 CMOS loads
Input Hysteresis (ΔV_IN)	Typ. 0.5V - improves noise margin on LE and OE control lines
Quiescent Current (I_CC)	<1µA at 25°C - negligible standby power in battery-backed or low-power systems

Pinout & Package

Supplied in 20-pin SOIC (Small Outline Integrated Circuit) package, 0.300" wide, with standard JEDEC MS-013AC footprint and 1.27mm pitch.

Pin/Terminal	Circuit Role	Design Meaning
1 (LE)	Latch Enable	Active-HIGH control: data passes through when HIGH; latched on falling edge
2–9 (D0–D7)	Data Inputs	Asynchronous inputs captured when LE = HIGH; held when LE = LOW
11–18 (Q0–Q7)	Tri-State Outputs	Driven when OE = LOW; high-impedance when OE = HIGH
19 (OE)	Output Enable	Active-LOW control: enables outputs only when asserted
10 (GND)	Ground	Reference for all input thresholds and output logic levels
20 (V_CC)	Supply	Positive supply rail; must be decoupled locally per JEDEC guidelines

Key Features

Feature	Design Value
Octal transparent latch function	Enables simultaneous capture and hold of 8-bit parallel data without clock edge dependency
3-state outputs with common OE	Allows direct connection to shared data buses without external bus transceivers
Wide V_CC range (2–6V)	Permits interoperability between 3.3V and 5V logic domains in mixed-supply systems
High noise immunity	Input hysteresis ensures robust operation in electrically noisy industrial environments
ESD protection	HBM >2kV - meets IEC 61000-4-2 Level 2 for board-level handling reliability

Applications

Microcontroller I/O Expansion

Address/Data Bus Latching

Use Scenario: Expanding GPIO count on resource-constrained MCUs like STM32F0 or PIC16F.

IC Role / Device Role / Timing Role: Acts as parallel output port latch, holding state while MCU services other peripherals.

Use Value: Eliminates need for dedicated I/O expander ICs; reduces BOM cost and PCB area.

Use Scenario: Separating multiplexed address/data bus in 8051 or Z80-based embedded systems.

IC Role / Device Role / Timing Role: Captures lower byte of address during ALE pulse to enable external memory decoding.

Use Value: Enables use of standard SRAM/ROM chips without requiring bus demultiplexing ASICs.

Industrial Control Panel Interface

Digital Test Equipment Signal Conditioning

Use Scenario: Driving LED arrays, relays, or optocouplers from PLC output modules.

IC Role / Device Role / Timing Role: Provides level-shifted, buffered, and latched outputs for isolation interface stages.

Use Value: Ensures stable output states during PLC scan cycle interruptions or watchdog resets.

Use Scenario: Holding stimulus patterns during automated test sequence execution.

IC Role / Device Role / Timing Role: Stores pattern bits from FPGA or pattern generator before applying to DUT pins.

Use Value: Guarantees glitch-free signal application by eliminating race conditions between pattern update and test execution.

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal transparent latch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74HC573N	DIP package; identical electrical specs but larger footprint and no moisture sensitivity rating	Suitable for prototyping or through-hole assembly; not recommended for reflow production	Select when manual soldering or breadboard evaluation is required
74HCT573D,118	TTL-input thresholds (V_IL = 0.8V, V_IH = 2.0V); same pinout and function	Better compatibility with legacy 5V TTL logic families; slightly higher I_CC	Choose when interfacing directly with 74LS or 74F series devices

Compared with SN74HC573N and 74HCT573D,118, the 74HC573D/S400,118 offers optimal surface-mount manufacturability, JEDEC-compliant moisture sensitivity level (MSL3), and balanced noise immunity for modern 3.3V/5V mixed-signal designs.

Availability

74HC573D/S400,118 is available at Aetrix Electronics and suitable for microcontroller I/O expansion, industrial control panel interfaces, and digital test equipment signal conditioning requiring stable component supply and long-term sourcing continuity.

Supply support for 74HC573D/S400,118 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 delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer applications.

The 74HC logic family targets cost-sensitive, high-reliability digital interface and data path applications where speed, power efficiency, and noise immunity are critical design requirements.

FAQ

What is the maximum clock frequency supported by the 74HC573D/S400,118?

The 74HC573D/S400,118 does not operate on a clock signal-it is a transparent latch controlled by LE and OE. Its usable toggle rate depends on LE pulse width and propagation delay. With t_PD ≤14ns and minimum LE pulse width of 20ns, it supports reliable data capture up to approximately 35MHz LE toggle frequency in worst-case conditions.

Can the 74HC573D/S400,118 drive LEDs directly?

Yes-each output can source or sink up to 7.8mA at V_CC = 4.5V. This allows direct driving of low-current indicator LEDs (e.g., 2mA @ 1.8V forward voltage) with appropriate series resistors. For higher-current loads like power LEDs or relays, external drivers remain necessary.

Is the 74HC573D/S400,118 compatible with 3.3V-only systems?

Yes-the device operates down to 2.0V and is fully specified at 3.3V. Input thresholds scale with V_CC, so 3.3V logic inputs meet VIH ≥2.0V and VIL ≤0.99V requirements. Outputs swing rail-to-rail, ensuring clean interfacing with other 3.3V CMOS devices.

Does the 74HC573D/S400,118 require pull-up or pull-down resistors on unused inputs?

Unused D inputs should be tied to V_CC or GND to prevent floating nodes that increase dynamic power and risk unintended switching. LE and OE must be actively driven-never left floating-as their states directly determine latch behavior and bus contention risk. Internal pull-ups/pull-downs are not provided.

74HC573D/S400,118 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: 74HC

Package/Case:: 20-SOIC (0.295", 7.50mm Width)

Packaging:: Bulk

Product Status:: Active

Logic Type:: D-Type Transparent Latch

Circuit:: 8:8

Output Type:: Tri-State, Non-Inverted

Voltage - Supply:: 2V ~ 6V

Independent Circuits:: 1

Delay Time - Propagation:: 14ns

Current - Output High, Low:: 7.8mA, 7.8mA

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-SO

74HC573D/S400,118 FAQ

1.How can I place an order for 74HC573D/S400,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74HC573D/S400,118 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 74HC573D/S400,118 reliable?

The price and inventory of 74HC573D/S400,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC573D/S400,118 is usually 5 days.

3.What payment methods are accepted for 74HC573D/S400,118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC573D/S400,118 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74HC573D/S400,118?

74HC573D/S400,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74HC573D/S400,118 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 74HC573D/S400,118?

For technical support, including 74HC573D/S400,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC573D/S400,118 requirements.

6.How does Aetrix verify that 74HC573D/S400,118 is sourced from the original manufacturer or authorized distributors?

All 74HC573D/S400,118 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 74HC573D/S400,118 meets industry standards.

7.What is the process for return or replacement of 74HC573D/S400,118?

All 74HC573D/S400,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC573D/S400,118, 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 74HC573D/S400,118 part is unused and in its original packaging.

Return procedure for 74HC573D/S400,118:

1.Submit a request within 90 days.

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

Tech Hub

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…