Texas Instruments TL16C554AIPNG4

Mfr. Part

TL16C554AIPNG4

Manufacturer

Luminary Micro/Texas Instruments. Y-IC is a quality, trusted distributor of TI. We provide original parts, full traceability, fast delivery, and responsive support. Count on Y-IC to supply the best TI products and services.

Detailed Description

Quad UART (QUART) with four independent asynchronous serial channels, each with 16-byte TX/RX FIFOs. 3.0–5.25 V supply, up to 1 Mbps per channel. Standard 16C550/16C554-compatible register set for easy software integration. Hardware flow control, false start-bit detection, and full modem-control signals per channel. 80-pin LQFP (12 x 12 mm) surface-mount package. RoHS3 compliant. Supplied in tray. Base product family TL16C554.

Key Features

4 UART channels in one chip (QUART)

16-byte transmit and receive FIFO per channel

Up to 1 Mbps data rate

3.0–5.25 V single supply, TTL/CMOS I/O levels

Automatic hardware flow control (CTS/RTS)

False start-bit detection for robust framing

Modem-control signals (DTR, DSR, DCD, RI) per channel

16C550/16C554-compatible registers for simple driver reuse

Interrupt outputs and flexible interrupt identification per channel

On-chip baud-rate generator using crystal or external clock

Surface-mount 80-LQFP package, RoHS3 compliant

Supplier device package: 80-LQFP (12x12)

Base product number: TL16C554

Key Advantages

Consolidates four serial ports into one IC to save board space and BOM cost

Works at both 3.3 V and 5 V, simplifying mixed-voltage systems

Mature 16C550-style interface makes firmware straightforward and reuse-friendly

Hardware flow control reduces CPU overhead and prevents buffer overruns

False start-bit detection improves reliability in noisy environments

Broad ecosystem support and long field history for stable designs

Tray packaging suited for automated SMT lines and high-volume builds

Packaging

Type: 80-pin LQFP (Low-Profile Quad Flat Package)

Material: Molded epoxy package with copper leadframe; matte-tin, lead-free (G4) finish

Body size: 12 mm x 12 mm nominal, thin profile

Pin pitch: typically 0.5 mm for 80-LQFP (verify exact pitch in datasheet)

Pin configuration overview:

- Parallel host interface: 8-bit data bus (D0–D7), address/select, chip-select, read/write, reset

- Per channel serial pins: TXD, RXD, CTS, RTS, DTR, DSR, DCD, RI

- Clock: crystal/oscillator pins (XIN/XOUT) or external clock input

- Interrupt outputs and control pins

Thermal characteristics: typical 80-LQFP thermal resistance supports standard industrial designs; follow JEDEC and TI layout guidance for heat spreading (ground plane, adequate copper)

Electrical properties:

- Supply voltage: 3.0–5.25 V

- Data rate: up to 1 Mbps per channel

- FIFOs: 16-byte TX and 16-byte RX per channel

- Logic: TTL/CMOS compatible I/O

Mounting type: Surface Mount (SMT)

Shipment: Tray

Lifecycle

Current status: Generally active in TI’s portfolio as of the latest market data; not known to be near discontinuation. Always confirm the latest status with Y-IC or TI notifications.

Alternatives and functional equivalents (check pinout, voltage, and FIFO sizes before substitution):

- Texas Instruments TL16C754C: Quad UART, larger FIFOs (often 64-byte), similar supply range; different pinout/package options

- MaxLinear (Exar) XR16C854 / XR16L854 / XR16M854: Quad UART, 16/64/128-byte FIFOs, 3.3 V/5 V options; LQFP packages available

- NXP SC16C654B: Quad UART, 64-byte FIFOs, 3.3 V supply; LQFP packages (pinout differs)

- Legacy National Semiconductor PC16554D family: Quad UART with 16C554-style register compatibility; package/pinout vary

If you need drop-in or form-fit-function guidance, contact our sales team via Y-IC’s website for verified cross references and engineering support.

Key Application Areas

Multi-port RS-232/RS-485/RS-422 interfaces using external transceivers

Industrial automation, PLCs, and factory serial networks

POS terminals, kiosks, and retail systems with multiple serial peripherals

Routers, switches, and servers for console and management ports

Embedded gateways and IoT concentrators needing many UART links

Test and measurement instruments and data loggers

Building automation, access control, and security systems

Datasheet

Y-IC hosts the most authoritative and up-to-date datasheet for TL16C554AIPNG4. For precise pinouts, electrical limits, timing, and layout guidelines, download the datasheet from this page on our website now.

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