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HomeProductsIntegrated Circuits (ICs)Interface - UARTs (Universal Asynchronous Receiver Transmitter)PC16552DVX
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PC16552DVX - Texas Instruments

Manufacturer Part Number
PC16552DVX
Manufacturer
Texas Instruments
Allelco Part Number
32D-PC16552DVX
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
15,220 pcs available, New & Original
Parts Description
IC UART DUAL WITH FIFO 44-PLCC
Package
44-PLCC (16.58x16.58)
Data sheet
PC16552DVX.pdf

PCN Obsolescence/ EOL

Cylindrical Battery Holders.pdf
RoHs Status
 
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In stock: 15220

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Specifications

PC16552DVX Tech Specifications
Texas Instruments - PC16552DVX technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - PC16552DVX

Product Attribute Attribute Value
Manufacturer Texas Instruments
With Modem Control Yes
With IrDA Encoder/Decoder -
With False Start Bit Detection Yes
With Auto Flow Control -
Voltage - Supply 5V
Supplier Device Package 44-PLCC (16.58x16.58)
Series -
Protocol -
Product Attribute Attribute Value
Package / Case 44-LCC (J-Lead)
Package Tape & Reel (TR)
Number of Channels 2, DUART
Mounting Type Surface Mount
Features -
FIFO's 16 Byte
Data Rate (Max) 1.5Mbps
Base Product Number PC16552

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS non-compliant
Moisture Sensitivity Level (MSL) 2A (4 Weeks)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

Manufacturer Part Number

PC16552DVX

Manufacturer

Texas Instruments

Introduction

The PC16552DVX is a dual UART (Universal Asynchronous Receiver Transmitter) interface device from Texas Instruments designed to address communication needs between peripherals or microcontrollers.

Product Features and Performance

Dual UART for efficient serial communication

Number of Channels: 2, DUART

Integrated 16-byte FIFO for improved data handling

Maximum Data Rate of 1.5Mbps enables fast data transfer

Supports False Start Bit Detection

Equippped with Modem Control functionality

Surface Mount Mounting Type

Product Advantages

Allows simultaneous communication through dual channels

FIFO buffer minimizes CPU loads during data transfer

High-speed transmission up to 1.5Mbps increases system performance

Advanced integration with false start bit detection and modem control for enhanced operational reliability

Compact 44-LCC (J-Lead) packaging is suitable for space-sensitive applications

Key Technical Parameters

Number of Channels: 2, DUART

FIFO's: 16 Byte

Data Rate (Max): 1.5Mbps

Voltage Supply: 5V

False Start Bit Detection: Yes

Modem Control: Yes

Package Type: 44-LCC (J-Lead)

Quality and Safety Features

Advanced error detection capabilities (False Start Bit Detection)

Reliable communication ensured through compliance with robust industry standards

Compatibility

Compatible with systems that require surface mount, dual UART interface working at 5V

Application Areas

Telecommunications

Embedded systems

Microcontroller interface

Data management devices

Product Lifecycle

Product Status: Obsolete

Existing stocks might be limited, and potential buyers should verify availability

Check for potential replacement products or upgrade requirements

Several Key Reasons to Choose This Product

Dual UART channels allow multitasking communication operations

16-byte FIFO buffers enhance data throughput and reduce processing power requirement

Ideal for applications requiring high-speed data transfers up to 1.5Mbps

Compact and reliable 44-LCC packaging suitable for minimized PCB space

Embedded error detection for increased data transmission integrity

Frequently Asked Questions(FAQ)

What are the key differences between the PC16552DVX and TL16C552AFNR in terms of supply voltage and temperature range, and how might this affect system design choices?
The PC16552DVX operates at a nominal supply voltage of 5V and is not RoHS-compliant, which may require additional handling in environmentally regulated designs. In contrast, the TL16C552AFNR typically supports lower supply voltages such as 3.3V and often has broader industrial temperature ratings. These distinctions influence power budgeting, interfacing compatibility, and thermal management strategies. Designers targeting portable or battery-powered systems may prefer the TL16C552AFNR for its reduced voltage operation, whereas legacy 5V systems might continue using the PC16552DVX despite its non-compliance with modern environmental standards.
How does the FIFO depth of 16 bytes in the PC16552DVX impact data throughput and interrupt generation in real-world UART applications?
With 16-byte FIFOs per channel, the PC16552DVX can buffer more incoming or outgoing data before triggering interrupts, reducing CPU overhead in bursty communication scenarios. For example, at a baud rate of 115200, each byte takes approximately 87 microseconds to transmit; without buffering, this could generate an interrupt every 87 µs. With 16 bytes, the interrupt interval extends to about 1.4 milliseconds—a 16-fold reduction in interrupt frequency. This improves system responsiveness by minimizing context switching and is particularly beneficial in microcontroller-based designs where interrupt latency affects overall performance.
Can the PC16552DVX be used in automotive-grade systems, and what limitations should engineers consider given its MSL rating and RoHS status?
While the PC16552DVX is suitable for certain commercial applications, its Moisture Sensitivity Level (MSL) of 2A (4 weeks) limits shelf life in humid environments unless proper storage protocols are followed. Additionally, its RoHS non-compliance excludes it from many automotive and consumer electronics platforms that enforce strict material regulations. Automotive designs typically require AEC-Q100 qualification and full RoHS compliance, so alternative parts like the TL16C552AFNR or newer TI devices would be more appropriate for such environments.
What is the maximum achievable data rate for the PC16552DVX, and how does clock accuracy influence reliable communication at near-maximum speeds?
The PC16552DVX supports a maximum data rate of 1.5 Mbps. At this speed, even minor clock drift or jitter becomes significant—for instance, a 0.5% oscillator error results in bit timing deviations that can cause framing errors over longer cables or noisy channels. Reliable operation near 1.5 Mbps demands stable crystal sources (e.g., ±30 ppm or better), adequate signal integrity on TX/RX lines, and careful PCB layout to minimize crosstalk and impedance mismatches.
How do the auto-flow control features absent in the PC16552DVX compare to those in similar DUARTs, and what design implications arise from this limitation?
Unlike some competitors that include hardware auto-flow control (RTS/CTS or DSR/DTR automation), the PC16552DVX lacks this feature, requiring software-based flow control logic. This increases firmware complexity and CPU load during high-speed transfers. Engineers implementing multi-drop or peer-to-peer UART networks must manually manage handshake signals or implement custom buffering algorithms, which can limit scalability and introduce latency compared to integrated solutions.
In what scenarios would the PC16552DVX’s false start bit detection provide tangible benefits over simpler UART implementations?
False start bit detection helps identify asynchronous noise or glitches that mimic valid start bits, preventing erroneous data interpretation in electrically noisy environments such as factory floors, industrial motor drives, or near RF transmitters. This feature enhances robustness when using long serial links or unshielded cables where transient disturbances are common. Without it, corrupted bytes may go undetected until higher-layer protocol checks fail, increasing debugging time and system downtime.
How does the 44-PLCC package size of the PC16552DVX affect board real estate and thermal characteristics compared to surface-mount alternatives?
The 44-pin PLCC (16.58x16.58 mm) is larger than standard SOIC or QFN packages, consuming more board space and potentially interfering with dense routing layers. Its J-lead configuration offers decent solder joint reliability but requires precise reflow profiles to avoid cracking. Thermal performance is moderate—without a thermal pad, heat dissipation relies solely on conduction through leads—making sustained high-throughput operation near 1.5 Mbps manageable but requiring attention to local copper pour and airflow in compact enclosures.
Are there known substitution risks when replacing the PC16552DVX with the TL16C552AFNR, particularly regarding pin compatibility and register mapping?
Although the TL16C552AFNR is listed as a substitute, differences in pinout, supply voltage tolerance, and internal register defaults necessitate thorough validation. For instance, the TL16C552AFNR may have inverted polarity on certain modem control lines or different reset behavior, which could disrupt existing driver code. Pin-compatible variants should be verified against both mechanical drawings and electrical characteristics before migration to avoid unintended system resets or communication failures.
What role does the PC16552DVX play in legacy embedded systems, and why might designers still choose it despite newer alternatives?
The PC16552DVX remains relevant in retrofitted or maintained systems where board layouts, firmware, and certification cycles are locked. Its proven track record in industrial control panels and older telecom equipment provides reliability assurances that outweigh newer features in some use cases. However, new designs should evaluate whether the lack of RoHS compliance and limited lifecycle support justify continued use or migration to compliant equivalents like the TL16C552AFNR.
How does the absence of IrDA support in the PC16552DVX constrain integration into wireless-enabled devices compared to contemporary UART transceivers?
Modern IoT nodes often leverage IrDA for short-range infrared communication without additional RF hardware. The PC16552DVX lacks built-in encoding/decoding for this protocol, forcing external circuitry or software emulation—adding cost, power, and complexity. Devices targeting remote monitoring or handheld terminals benefit from integrated IrDA, making the PC16552DVX less ideal for applications requiring optical data links alongside serial comms.
What considerations apply when cascading multiple PC16552DVX devices to increase UART channels beyond two?
Cascading requires careful attention to shared clock domains, interrupt prioritization, and FIFO synchronization. Since each channel operates independently, coordinating DMA transfers or timestamp alignment across chips adds firmware overhead. Additionally, cumulative propagation delays and skew between devices can degrade timing-sensitive protocols like CAN-over-UART or precision sensor polling. Most practical for prototyping rather than production systems due to increased BOM cost and footprint.
How does the PC16552DVX’s interrupt structure handle simultaneous transmit and receive FIFO thresholds in high-bandwidth applications?
Each channel generates independent interrupts when its 16-byte FIFO reaches programmable levels (e.g., 8 bytes). In bidirectional traffic, this allows staggered servicing—for example, RX interrupt at 8 received bytes, TX at 8 empty slots. Proper threshold configuration minimizes missed data while avoiding excessive ISR calls. Misconfiguration—such as setting both thresholds too low—can flood the CPU with interrupts, starving other tasks in resource-constrained microcontrollers.
What are the implications of the PC16552DVX’s EAR99 classification for international distribution and export controls?
As an EAR99 item, the PC16552DVX is generally unrestricted for most commercial end uses under U.S. export regulations. However, final determination depends on intended application (e.g., military, encryption, or space systems), which may trigger additional licensing requirements. Designers sourcing globally should confirm local interpretations and maintain documentation to support compliance audits.
How does the PC16552DVX compare to single-channel UARTs in terms of cost-per-channel and suitability for multi-protocol gateways?
Offering two independent UART channels in one package, the PC16552DVX reduces component count and PCB area compared to two single-channel devices. While unit cost may be slightly higher, savings in assembly, routing, and testing often justify the DUART approach in gateway designs bridging RS-232, Modbus, and proprietary serial links. Only disadvantage arises if only one channel is needed, leading to underutilized silicon.
What precautions should be taken during reflow soldering of the PC16552DVX due to its MSL 2A rating?
Parts must be stored in dry cabinets below 20% RH prior to use. Once removed, they remain usable for four weeks under typical workshop conditions (≤30°C, ≤60% RH). After opening, bake-out may be required if moisture absorption is suspected—consult IPC/JEDEC guidelines. Skipping these steps risks popcorning during reflow, damaging internal bonds and voiding warranty.
Why might the PC16552DVX be preferred over FPGAs for simple UART bridging despite FPGA flexibility?
For fixed-function serial interfaces with moderate throughput (<500 kbps), the PC16552DVX offers lower power, smaller footprint, and faster time-to-market versus developing UART IP cores in FPGA logic. It also eliminates HDL verification effort and timing closure challenges, making it ideal for non-time-critical bridging tasks where deterministic behavior and ease of integration outweigh configurability needs.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments PC16552DVX

Product Attribute PC16550DVX/NOPB-NS PC16552DV PC16550DVX/NOPB PC16550DVX
Part Number PC16550DVX/NOPB-NS PC16552DV PC16550DVX/NOPB PC16550DVX
Manufacturer National Semiconductor Texas Instruments Texas Instruments Texas Instruments
With IrDA Encoder/Decoder - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
With Modem Control - - - -
With Auto Flow Control - - - -
Number of Channels - - - -
Protocol - - - -
Voltage - Supply - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
FIFO's - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Mounting Type - Surface Mount Through Hole Surface Mount
Data Rate (Max) - - - -
Features - - - Simultaneous Sampling
With False Start Bit Detection - - - -
Series - - - -

PC16552DVX Datasheet PDF

Download PC16552DVX pdf datasheets and Texas Instruments documentation for PC16552DVX - Texas Instruments.

Datasheets
Cylindrical Battery Holders.pdf
PCN Obsolescence/ EOL
Cylindrical Battery Holders.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Brazil 7
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New Zealand 5
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0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
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Texas Instruments

PC16552DVX

Texas Instruments
32D-PC16552DVX

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