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Voltage Regulator IC; Output Current:350mA; Output Voltage:2.5V; Package/Case:8-TSSOP; Supply Voltage Max:6V; Current Rating:350mA; Leaded Process Compatible:Yes; Output Current Max:350mA; Output Voltage Max:2.5V

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ST16C554 General Description

GENERAL DESCRIPTIONThe ST16C554/554D (554) is a quad Universal Asynchronous Receiver and Transmitter (UART) with 16 bytes of transmit and receive FIFOs, selectable receive FIFO trigger levels and data rates of up to 1.5 Mbps. Each UART has a set of registers that provide the user with operating status and control, receiver error indications, and modem serial interface controls. An internal loopback capability allows onboard diagnostics. The 554 is available in a 64-pin LQFP and a 68-pin PLCC package. The 64-pin package only offers the 16 mode interface, but the 68-pin package offers an additional 68 mode interface which allows easy integration with Motorola processors. The ST16C554CQ64 (64-pin) offers three state interrupt output while the ST16C554DCQ64 provides continuous interrupt output. The 554 combines the package interface modes of the 16C554 and 68C554 on a single integrated chip.FEATURES • Pin-to-pin compatible with the industry standard ST16C454, ST68C454, ST68C554, TI’s TL16C554A and Philips’ SC16C554B • Intel or Motorola Data Bus Interface select • Four independent UART channels    ■ Register Set Compatible to 16C550    ■ Data rates of up to 1.5 Mbps at 5 V    ■ Data rates of up to 500 Kbps at 3.3V    ■ 16 byte Transmit FIFO    ■ 16 byte Receive FIFO with error tags    ■ 4 Selectable RX FIFO Trigger Levels    ■ Full modem interface • 2.97V to 5.5V supply operation • Crystal oscillator or external clock inputAPPLICATIONS • Portable Appliances • Telecommunication Network Routers • Ethernet Network Routers • Cellular Data Devices • Factory Automation and Process Controls

Key Features

  • Pin-to-pin compatible with the industry standard ST16C454, ST68C454, ST68C554, TI’s TL16C554A and Philips’ SC16C554B
  • Intel or Motorola Data Bus Interface select
  • Four independent UART channels
  • Register Set Compatible to 16C550
  • Data rates of up to 1.5 Mbps at 5 V
  • Data rates of up to 500 Kbps at 3.3V
  • 16 byte Transmit FIFO
  • 16 byte Receive FIFO with error tags
  • 4 Selectable RX FIFO Trigger Levels
  • Full modem interface
  • 2.97V to 5.5V supply operation
  • Crystal oscillator or external clock input


Part Life Cycle Code Active Ihs Manufacturer MAXLINEAR INC
Reach Compliance Code unknown HTS Code 8542.31.00.01
Date Of Intro 2019-09-16


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Delivery Time

The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.

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Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.
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Buying Guide

  • What is the lifespan of ST16C554?

    The lifespan of ST16C554 depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.

  • Where can I find the full specification of ST16C554?

    You can find it with PDF Datasheet for ST16C554 on this page. If it is not available, you can contact Avaq at [email protected] to inquire about the Datasheet for this part.

  • How to check the quality of ST16C554?

    Avaq has separate quality services with common quality inspection equipment for testing items, you can also fill out a sample form, our team will get in touch with you within 24 HOURS.

  • Can I purchase samples for testing?

    Avaq offers free samples for customers to test. This can often help you determine whether the chip or component meets your needs.

  • Where can I check the delivery after the order is completed?

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