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NXP Semiconductors SC16IS762IBS-T
- Part No.:
- SC16IS762IBS-T
- Manufacturer:
- NXP Semiconductors
- Category:
- Controllers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
SC16IS762IBS-T.pdf
- Description:
- IC UART DUAL I2C/SPI 32-HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,994
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Product details
Overview
SC16IS762IBS-T from NXP Semiconductors is a dual-channel, SPI/I²C-interface UART IC with IrDA SIR support up to 1.152 Mbit/s, 64-byte TX/RX FIFOs per channel, and eight programmable GPIOs - enabling protocol bridging between microcontrollers and RS-232/RS-485 peripherals in space-constrained industrial gateways.
For engineers reviewing the SC16IS762IBS-T datasheet, SC16IS762IBS-T pinout, SC16IS762IBS-T application, or SC16IS762IBS-T equivalent, key selection considerations include its 15 Mbit/s SPI clock support (vs. 4 Mbit/s on SC16IS752), IrDA SIR speed differentiation, HVQFN32 package footprint, dual UART interrupt prioritization, and automatic RS-485 direction control via RTS.
Technical Context
The SC16IS762IBS-T implements two independent 16C450-compatible UART channels with fully programmable framing (5–8 bit, 1/1.5/2 stop bits, parity options), auto hardware flow control (RTS/CTS), and software flow control using configurable Xon/Xoff characters. Its register set enables drop-in software porting from legacy UART platforms.
It supports dual interface modes: I²C-bus (Fast-mode, 400 kbit/s) and SPI (Mode 0, slave-only, up to 15 Mbit/s), selected via the I2C/SPI pin. Internal oscillator operation uses XTAL1/XTAL2 (1–25 MHz crystal or external clock), and sleep current is <30 µA at 3.3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Interface | I²C-bus (400 kbit/s) or SPI (15 Mbit/s, Mode 0, slave-only) |
| UART Channels | Dual full-duplex, 16C450-compatible with independent TX/RX FIFOs (64 bytes each) |
| Max Baud Rate | 5 Mbit/s in 16× clock mode - supports high-speed serial links without oversampling penalty |
| IrDA SIR Speed | Up to 1.152 Mbit/s - enables infrared data exchange compliant with IrDA Physical Layer v1.4 |
| GPIO Pins | 8 programmable I/O pins - configurable as general-purpose or modem control signals (DSR/DTR/RI/CD) |
| Supply Voltage | 2.5 V or 3.3 V operation - compatible with modern low-voltage MCU domains and level-shifted interfaces |
| Operating Temp | −40 °C to +95 °C - qualified for industrial ambient environments without derating |
| Sleep Current | <30 µA at 3.3 V - extends battery life in portable and remote sensor nodes |
Pinout & Package
HVQFN32 (SOT617-1) package: 5 mm × 5 mm × 0.85 mm, thermally enhanced, exposed center pad requiring PCB ground connection for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GPIO0/DSRB | Programmable I/O or Channel B Data Set Ready | Configurable via IOControl register bit 2 - used for modem status signaling or general digital I/O |
| RTSA / RTSB | Request-to-Send outputs (active LOW), Channels A/B | Auto-RTS enabled via EFR[6] - asserts when RX FIFO has space, de-asserts at halt trigger level (TCR) |
| CTSA / CTSB | Clear-to-Send inputs (active LOW), Channels A/B | Auto-CTS enabled via EFR[7] - gates TX only when asserted, preventing overrun during hardware flow control |
| TXA / TXB, RXA / RXB | Transmit/Receive data lines, Channels A/B | Full-duplex serial I/O - supports RS-232/RS-485 transceivers; RX inputs disabled in loopback mode |
| IRQ | Open-drain interrupt output (active LOW) | Seven-priority interrupt sources - requires 1 kΩ pull-up to VDD (3.3 V) or 1.5 kΩ (2.5 V) |
| I2C/SPI | Interface select input | Logic HIGH = I²C mode; Logic LOW = SPI mode - determines function of CS/A0, SI/A1, SO, SCL/SCLK, SDA pins |
| RESET | Hardware reset input (active LOW) | Asynchronous reset - clears most registers except DLL/DLH/SPR/XON1/XON2/XOFF1/XOFF2 |
| VDD / VSS | Power supply and ground | VDD on pins 5, 13, 28; VSS on pins 12, 21, 29 + center pad - all must be connected to system ground for stable operation |
Key Features
| Feature | Design Value |
|---|---|
| Automatic RS-485 direction control | RTS signal drives driver enable - eliminates need for external logic or delay timers in half-duplex bus systems |
| Programmable FIFO trigger levels | Independent RX/TX trigger thresholds via FCR or TLR - reduces CPU polling overhead and interrupt latency |
| IrDA SIR encoder/decoder | On-chip modulation/demodulation at 1.152 Mbit/s - removes requirement for external IrDA PHY layer components |
| Software reset capability | Register-level reset initiated via EFR - allows UART reinitialization without toggling hardware RESET pin or power cycle |
| 5 V tolerant inputs | All digital inputs accept 5 V logic levels - simplifies interfacing with mixed-voltage systems without level shifters |
| Internal loopback mode | TX data internally routed to RX path - enables functional self-test without external cabling or loopback hardware |
Applications
| Industrial Gateway Interface | Portable Diagnostic Tool |
|---|---|
Use Scenario: Connecting ARM-based edge controller to legacy RS-485 field devices (PLCs, sensors) over SPI. IC Role / Device Role / Timing Role: Dual UART bridge translating SPI commands into RS-485 frames with automatic driver direction control. Use Value: Eliminates discrete level shifters and timing-critical GPIO toggling; 64-byte FIFOs absorb burst traffic from multiple fieldbus nodes. |
Use Scenario: Handheld medical device communicating with ultrasound probe via IrDA SIR at 1.152 Mbit/s. IC Role / Device Role / Timing Role: IrDA physical layer interface with integrated encoder/decoder and UART framing. Use Value: Reduces BOM count by replacing separate IrDA transceiver + UART; sleep current <30 µA extends battery runtime. |
| Factory Automation Terminal | Smart Energy Meter Interface |
Use Scenario: HMI panel with dual serial ports - one for PLC debug console (RS-232), one for barcode scanner (RS-485). IC Role / Device Role / Timing Role: Dual-channel UART with independent flow control and GPIO-assisted peripheral handshaking. Use Value: Single chip replaces two discrete UARTs; GPIOs implement DTR/DSR handshake for scanner synchronization. |
Use Scenario: AMI meter with isolated RS-485 communication and local I²C-connected MCU. IC Role / Device Role / Timing Role: I²C-to-RS-485 bridge supporting automatic direction control and hardware flow control. Use Value: Enables deterministic response to utility command bursts; 15 Mbit/s SPI allows fast firmware updates over host interface. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual UART bridge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SC16IS752IBS | Max SPI clock 4 Mbit/s; IrDA SIR limited to 115.2 kbit/s; otherwise identical register map and pinout | Lower-speed SPI hosts or legacy IrDA implementations where 1.152 Mbit/s is unnecessary | Select SC16IS752IBS only if 15 Mbit/s SPI or 1.152 Mbit/s IrDA SIR are not required - same footprint and software compatibility |
| MAX3107ETJ+ | Single-channel UART; SPI-only interface (no I²C); 12 Mbit/s max SPI; no IrDA support; different register architecture | Space-constrained designs needing only one UART channel and no infrared capability | Choose MAX3107ETJ+ when single UART suffices and IrDA/I²C are irrelevant - requires software porting due to non-16C450 register set |
Compared with SC16IS752IBS and MAX3107ETJ+, the SC16IS762IBS-T uniquely delivers both 15 Mbit/s SPI performance and 1.152 Mbit/s IrDA SIR in a 16C450-compatible dual UART, making it optimal for industrial gateways requiring high-throughput bridging and infrared diagnostics.
Availability
SC16IS762IBS-T is available at Aetrix Electronics and suitable for factory automation, portable diagnostic tools, and smart energy metering requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SC16IS762IBS-T 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 applications, with deep expertise in interface and mixed-signal IC design.
The SC16IS7xx family was designed specifically for protocol bridging in resource-constrained embedded systems - delivering high-speed UART functionality with minimal MCU overhead and flexible host interface options.
FAQ
What interface modes does the SC16IS762IBS-T support?
The SC16IS762IBS-T supports two selectable host interface modes: I²C-bus (Fast-mode, up to 400 kbit/s) and SPI (Mode 0, slave-only, up to 15 Mbit/s). The I2C/SPI pin determines active mode - HIGH selects I²C, LOW selects SPI. Pin functions like CS/A0 and SI/A1 change behavior accordingly, and the SC16IS762IBS-T maintains full register compatibility across both modes.
How does the SC16IS762IBS-T handle RS-485 direction control?
The SC16IS762IBS-T provides automatic RS-485 driver direction control using the RTSA/RTSB pins. When Auto-RTS is enabled via EFR[6], RTS asserts when the RX FIFO has space and de-asserts at the programmed halt trigger level (TCR). This directly controls external RS-485 transceiver DE/RE pins, eliminating external timing logic and ensuring glitch-free half-duplex bus operation.
What is the maximum IrDA SIR speed supported by the SC16IS762IBS-T?
The SC16IS762IBS-T supports IrDA SIR (Serial Infrared) at speeds up to 1.152 Mbit/s - a tenfold increase over the 115.2 kbit/s limit of the SC16IS752. This higher speed enables faster infrared data transfer in portable diagnostics and point-of-sale terminals, while maintaining full compliance with IrDA Physical Layer v1.4 specifications.
Does the SC16IS762IBS-T require an external crystal?
The SC16IS762IBS-T supports both crystal oscillator and external clock input configurations. A crystal (1–25 MHz) may be connected between XTAL1 and XTAL2, or an external clock signal may be applied to XTAL1 alone (with XTAL2 left open). No external crystal is mandatory - the device operates correctly with either configuration, and internal timing remains stable across the full −40 °C to +95 °C range.
Can the SC16IS762IBS-T operate with 2.5 V and 3.3 V supplies simultaneously?
No - the SC16IS762IBS-T operates from a single VDD supply at either 2.5 V or 3.3 V, not both. All I/O pins (including GPIOs and interface signals) are referenced to this single supply. However, its 5 V tolerant inputs allow connection to 5 V logic systems without level shifters, preserving signal integrity while simplifying interconnect design in mixed-voltage environments.
SC16IS762IBS-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 32-VFQFN Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- RS232, RS485
- Function:
- Controller
- Interface:
- I2C, SPI, UART
- Standards:
- -
- Voltage - Supply:
- 2.5V, 3.3V
- Current - Supply:
- 2mA
- Operating Temperature:
- -40°C ~ 95°C
- Supplier Device Package:
- 32-HVQFN (5x5)
- Grade:
- -
- Qualification:
- -
SC16IS762IBS-T FAQ
1.How can I place an order for SC16IS762IBS-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SC16IS762IBS-T 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 SC16IS762IBS-T reliable?
The price and inventory of SC16IS762IBS-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC16IS762IBS-T is usually 5 days.
3.What payment methods are accepted for SC16IS762IBS-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC16IS762IBS-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC16IS762IBS-T?
SC16IS762IBS-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC16IS762IBS-T 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 SC16IS762IBS-T?
For technical support, including SC16IS762IBS-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC16IS762IBS-T requirements.
6.How does Aetrix verify that SC16IS762IBS-T is sourced from the original manufacturer or authorized distributors?
All SC16IS762IBS-T 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 SC16IS762IBS-T meets industry standards.
7.What is the process for return or replacement of SC16IS762IBS-T?
All SC16IS762IBS-T units undergo pre-shipment inspection (PSI). If there is an issue with SC16IS762IBS-T, 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 SC16IS762IBS-T part is unused and in its original packaging.
Return procedure for SC16IS762IBS-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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