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NXP Semiconductors SC16C750BIA44,512
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- Part No.:
- SC16C750BIA44,512
- Manufacturer:
- NXP Semiconductors
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
SC16C750BIA44,512.pdf
- Description:
- IC UART 64BYTE 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,777
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Product details
Overview
SC16C750BIA44,512 from NXP Semiconductors is a single-channel 5 V/3.3 V/2.5 V UART IC with 64-byte transmit and receive FIFOs, programmable auto-RTS/CTS hardware flow control, and up to 3 Mbit/s serial data rate at 5 V. It serves as a parallel-to-serial/serial-to-parallel converter in embedded host interfaces requiring high-throughput asynchronous communication with modems or industrial peripherals.
For engineers reviewing the SC16C750BIA44,512 datasheet, SC16C750BIA44,512 pinout, SC16C750BIA44,512 application, or SC16C750BIA44,512 equivalent, this page delivers verified technical context, PLCC44 package mapping, FIFO-triggered interrupt behavior, sleep-mode power management, and real-world UART substitution guidance - all grounded in NXP's Rev. 05 product data sheet.
Technical Context
The SC16C750BIA44,512 implements a register-mapped UART core with dual 64-byte FIFOs, independent TX/RX baud rate generation via 16-bit divisor latches (DLL/DLM), and hardware flow control logic that monitors CTS for transmit suspension and asserts RTS based on receive FIFO fill level. Its internal loopback mode isolates TX/RX path integrity without external cabling.
It supports three voltage domains (2.5 V, 3.3 V, 5 V), operates across −40 °C to +85 °C, and provides four selectable receive interrupt trigger levels (1/16/32/56 bytes) plus DMA-ready signaling via RXRDY/TXRDY outputs. Sleep mode disables the oscillator driver while retaining wake-on-RX-start-bit, modem pin edge, or transmit request capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5 V, 3.3 V, or 5 V ±10 % - enables direct integration into mixed-voltage industrial control backplanes without level shifters. |
| Max Data Rate | 3 Mbit/s at 5 V (with 48 MHz XTAL) - supports high-speed modem and ISDN interface applications requiring >115.2 kbit/s input rates. |
| FIFO Depth | 64-byte TX + 64-byte RX with error flags - reduces CPU interrupt load by ~75 % vs. 16C450 (no FIFO) and ~60 % vs. 16C550 (16-byte FIFO). |
| Flow Control | Programmable auto-RTS/CTS - eliminates software polling overhead by automatically asserting RTS when FIFO reaches threshold and halting TX on CTS deassertion. |
| Interrupt Flexibility | Four RX trigger levels + prioritized INT output - allows tuning of latency vs. bandwidth trade-offs in real-time data acquisition systems. |
| Operating Temperature | −40 °C to +85 °C - qualified for deployment in industrial automation cabinets and outdoor telecom equipment enclosures. |
| Sleep Mode Current | Reduced oscillator power consumption - extends uptime in battery-backed remote monitoring nodes during idle periods. |
Pinout & Package
SC16C750BIA44,512 is housed in a plastic leaded chip carrier (PLCC44) package with 44 leads, 1.27 mm pitch, and JEDEC MS-026 compliant footprint. Pin 1 index is located at corner adjacent to notch; body size is 16.59 mm × 16.59 mm × 4.57 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D0–D7 | Data bus I/O | Bidirectional 8-bit parallel interface to CPU/data bus; 3-state TTL drive enables shared bus arbitration. |
| A0–A2 | Register address select | Decode UART internal registers (THR/RHR, IER, FCR, LCR, MCR, etc.) per Table 3 in datasheet Rev. 05. |
| CS0–CS2 | Chip select inputs | Active-low decode logic: CS0=HIGH, CS1=HIGH, CS2=LOW selects device; supports multi-UART addressing. |
| IOR / IOW | Read/write strobes | Asynchronous control signals - either IOR or IOR (complementary) and either IOW or IOW may be used per system timing. |
| TX / RX | Serial data I/O | Full-duplex asynchronous interface; TX drives composite serial output, RX accepts inverted/non-inverted logic-level input. |
| RTS / CTS | Hardware flow control | RTS output controlled by FIFO level in auto-RTS mode; CTS input halts transmission when deasserted in auto-CTS mode. |
| INT | Interrupt output | Open-drain HIGH-active signal indicating pending receiver error, data ready, transmitter empty, or modem status change. |
| RESET | Master reset input | Asynchronous active-HIGH signal clearing registers and initializing outputs to known states (e.g., TX = HIGH, RTS = HIGH). |
Key Features
| Feature | Design Value |
|---|---|
| 64-byte dual FIFOs | Enables burst-mode transfers and reduces CPU servicing frequency by up to 8× compared to legacy 16C450 implementations. |
| Auto-RTS/CTS flow control | Eliminates software-based handshaking loops, cutting firmware overhead and preventing buffer overflow in high-throughput serial links. |
| Four RX interrupt trigger levels | Allows optimization of interrupt latency (1-byte trigger) or throughput efficiency (56-byte trigger) per application data pattern. |
| Internal loopback diagnostics | Validates TX/RX functional integrity without external loop cables - critical for field-deployed medical or avionics subsystems. |
| Sleep mode with wake-on-event | Reduces quiescent current during idle periods while maintaining responsiveness to incoming start bits or modem pin transitions. |
Applications
| Industrial PLC Serial Gateway | Medical Device RS-232 Interface |
|---|---|
Use Scenario: Connecting legacy RS-232 sensors and HMIs to a modern ARM-based controller over isolated serial buses. IC Role / Device Role / Timing Role: UART bridge converting parallel CPU bus transactions into framed asynchronous serial streams with hardware flow control. Use Value: 64-byte FIFOs absorb bursty sensor telemetry without CPU intervention; auto-CTS prevents overrun during high-noise factory floor transmissions. |
Use Scenario: Enabling bidirectional patient data logging between ECG monitor and central nursing station via RS-232. IC Role / Device Role / Timing Role: Reliable serial transceiver handling time-critical waveform data with framing error detection and low-latency interrupt response. Use Value: Four RX trigger levels allow tuning for 9600–115200 baud diagnostic traffic; sleep mode extends battery life in portable units. |
| Telecom Base Station Modem Link | Automotive Diagnostic Tool Interface |
Use Scenario: Interfacing high-speed V.34/V.90 modems to baseband processors in DSLAM or VoIP gateway hardware. IC Role / Device Role / Timing Role: High-bandwidth UART supporting 3 Mbit/s operation with precise baud rate generation for compressed modem data streams. Use Value: Programmable 16-bit divisor latches enable exact 460.8 kbit/s and 921.6 kbit/s rates required by ISDN and LTE backhaul protocols. |
Use Scenario: Providing OBD-II serial communication path between vehicle ECU and handheld diagnostic scanner. IC Role / Device Role / Timing Role: Robust UART with false start-bit rejection and line break detection for noisy automotive electrical environments. Use Value: Internal loopback mode validates UART functionality during pre-deployment QA; 2.5 V/3.3 V support matches modern microcontroller I/O domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar UART interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL16C750CPTR | Pin-compatible but lacks 2.5 V operation; max data rate 2.5 Mbit/s at 5 V; no sleep mode. | Best suited for legacy 5 V-only designs where low-power operation is not required. | Select TL16C750CPTR only if existing board layout uses 5 V supply and sleep mode is unnecessary. |
| SC16C752BIA44,518 | Dual-channel version in same PLCC44 package; shares identical register map and FIFO architecture per channel. | Required when two independent serial ports are needed on one PCB footprint without increasing component count. | Choose SC16C752BIA44,518 when consolidating two serial interfaces onto a single IC to reduce BOM cost and layout area. |
Compared with TL16C750CPTR and SC16C752BIA44,518, the SC16C750BIA44,512 uniquely balances triple-voltage support, sleep-mode power savings, and single-channel optimization - making it ideal for space-constrained, battery-aware, or mixed-voltage industrial gateways where pin compatibility with 16C450 software is mandatory.
Availability
SC16C750BIA44,512 is available at Aetrix Electronics and suitable for industrial PLC gateways, medical RS-232 interfaces, telecom modem links, automotive diagnostic tools, and embedded serial bridge applications requiring stable component supply and long-term lifecycle assurance.
Supply support for SC16C750BIA44,512 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
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in interface, power, and security ICs.
The SC16C750BIA44,512 belongs to NXP's legacy UART product line designed for robust, drop-in replacement of industry-standard 16C450/550 devices while adding FIFO depth, multi-voltage operation, and hardware flow control for modern embedded serial infrastructure.
FAQ
What voltage levels does the SC16C750BIA44,512 support?
The SC16C750BIA44,512 operates at 2.5 V, 3.3 V, or 5 V ±10 %, with 5 V tolerance on input-only pins (D7–D0). This triple-voltage capability allows direct integration into mixed-supply systems without external level translation, and the SC16C750BIA44,512 maintains full specification compliance-including 3 Mbit/s data rate-at 5 V.
How does the SC16C750BIA44,512 implement automatic hardware flow control?
The SC16C750BIA44,512 uses dedicated RTS and CTS pins with configurable auto-RTS and auto-CTS modes. When enabled, CTS deassertion halts transmission after the current character's stop bit, and RTS assertion is triggered by receive FIFO fill level crossing a user-programmed threshold. This logic resides entirely within the SC16C750BIA44,512 and requires no CPU polling.
What is the maximum serial data rate achievable with the SC16C750BIA44,512?
The SC16C750BIA44,512 achieves up to 3 Mbit/s at 5 V (with 48 MHz crystal), 2 Mbit/s at 3.3 V, and 1 Mbit/s at 2.5 V. These rates are realized using its 16-bit programmable baud rate generator (DLL/DLM), which divides the input clock by divisors from 1 to 65535 to produce precise custom rates such as 460.8 kbit/s for ISDN applications.
Does the SC16C750BIA44,512 support sleep mode, and how is it activated?
Yes, the SC16C750BIA44,512 supports sleep mode to reduce power consumption by disabling the internal oscillator driver. It is activated by setting IER[4] = 1, and the SC16C750BIA44,512 wakes automatically on RX start-bit detection, modem pin transitions (RI/CTS/DSR/DCD), or transmit request - then returns to sleep after final byte transmission or reception.
Is the SC16C750BIA44,512 pin-compatible with older UARTs like the 16C450?
Yes, the SC16C750BIA44,512 powers up functionally equivalent to the 16C450 and is pin-compatible with TL16C750, ST16C450/550, and PC16C450/550. Its PLCC44 pinout matches these legacy parts, enabling drop-in upgrades in existing designs while preserving PCB layout and 16C450 software compatibility.
SC16C750BIA44,512 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 44-LCC (J-Lead)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Features:
- -
- Number of Channels:
- 1, UART
- FIFO's:
- 64 Byte
- Protocol:
- -
- Data Rate (Max):
- 3Mbps
- Voltage - Supply:
- 2.5V, 3.3V, 5V
- With Auto Flow Control:
- Yes
- With IrDA Encoder/Decoder:
- -
- With False Start Bit Detection:
- Yes
- With Modem Control:
- Yes
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-PLCC (16.59x16.59)
SC16C750BIA44,512 FAQ
1.How can I place an order for SC16C750BIA44,512 through Aetrix?
Please submit a Request for Quotation (RFQ) for SC16C750BIA44,512 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 SC16C750BIA44,512 reliable?
The price and inventory of SC16C750BIA44,512 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC16C750BIA44,512 is usually 5 days.
3.What payment methods are accepted for SC16C750BIA44,512?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC16C750BIA44,512 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC16C750BIA44,512?
SC16C750BIA44,512 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC16C750BIA44,512 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 SC16C750BIA44,512?
For technical support, including SC16C750BIA44,512 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC16C750BIA44,512 requirements.
6.How does Aetrix verify that SC16C750BIA44,512 is sourced from the original manufacturer or authorized distributors?
All SC16C750BIA44,512 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 SC16C750BIA44,512 meets industry standards.
7.What is the process for return or replacement of SC16C750BIA44,512?
All SC16C750BIA44,512 units undergo pre-shipment inspection (PSI). If there is an issue with SC16C750BIA44,512, 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 SC16C750BIA44,512 part is unused and in its original packaging.
Return procedure for SC16C750BIA44,512:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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