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NXP Semiconductors SC16IS762IBS,151
- Part No.:
- SC16IS762IBS,151
- Manufacturer:
- NXP Semiconductors
- Category:
- Controllers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
SC16IS762IBS,151.pdf
- Description:
- IC UART DUAL I2C/SPI 32-HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,410
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Product details
Overview
SC16IS762IBS,151 from NXP Semiconductors is a dual-channel SPI/I²C-to-UART bridge IC with IrDA SIR support up to 1.152 Mbit/s, 64-byte TX/RX FIFOs per channel, and eight programmable GPIOs. It operates at 2.5 V or 3.3 V, supports hardware/software flow control, automatic RS-485 direction control, and targets battery-powered industrial communication interfaces.
For engineers reviewing the SC16IS762IBS,151 datasheet, SC16IS762IBS,151 pinout, SC16IS762IBS,151 application, or SC16IS762IBS,151 equivalent, this device serves as a high-speed protocol converter for embedded systems requiring dual UART expansion over I²C or SPI buses with low-power sleep mode (<30 µA) and industrial temperature operation (−40 °C to +95 °C).
Technical Context
The SC16IS762IBS,151 implements two independent 16C450-compatible UART channels with fully programmable framing (5–8 bit, 1/1.5/2 stop bits, even/odd/no parity), auto RTS/CTS hardware flow control, and software Xon/Xoff handling. Its register set enables seamless porting from legacy UART platforms.
It integrates an IrDA SIR encoder/decoder supporting 1.152 Mbit/s (exclusive to SC16IS762), SPI clock up to 15 Mbit/s (vs. 4 Mbit/s on SC16IS752), and I²C Fast-mode (400 kbit/s). Sleep mode activation requires EFR[4] and IER[4] enabled, and triggers only when RX is idle, TX FIFO/shift register are empty, and no pending interrupts except THR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Interface | I²C-bus (Fast-mode, 400 kbit/s) or SPI (Mode 0, 15 Mbit/s max); selectable via I2C/SPI pin |
| UART Channels | Dual full-duplex UARTs, each with 64-byte TX/RX FIFOs and independent trigger-level programming |
| Max Baud Rate | 5 Mbit/s in 16× clock mode - enables high-throughput serial links without CPU polling overhead |
| IrDA Support | IrDA SIR up to 1.152 Mbit/s - validated for short-range infrared data exchange; not compatible with IrDA MIR at same speed |
| GPIO Pins | 8 programmable I/O pins (GPIO0–GPIO7), configurable as modem control signals (DSR/DTR/RI/CD) or general-purpose I/O |
| Supply & Temp | 2.5 V or 3.3 V operation; industrial temperature range −40 °C to +95 °C - suitable for harsh embedded environments |
| Sleep Current | <30 µA at 3.3 V - extends battery life in portable devices during UART idle periods |
Pinout & Package
HVQFN32 package (5 × 5 × 0.85 mm, thermal pad), leadless, with exposed center ground pad requiring PCB soldering and thermal vias for optimal thermal/electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (pins 5,13,28) | Power supply | 3.3 V or 2.5 V core supply; multiple pins reduce IR drop and improve decoupling |
| VSS (pins 12,21,29 + center pad) | Ground | Three dedicated ground pins plus exposed thermal pad - mandatory connection to PCB ground plane for stability and heat dissipation |
| I2C/SPI (pin 6) | Interface select | Logic HIGH = I²C mode; LOW = SPI mode - configures internal bus logic and pin functions at power-up |
| IRQ (pin 14) | Interrupt output | Open-drain, active-LOW signal indicating UART status events; requires external 1 kΩ pull-up to VDD (3.3 V) |
| TXA/TXB (pins 32,22) | UART transmit outputs | Channel A/B serial outputs; support RS-232/RS-485 level-shifting externally; disabled in loopback mode |
| RXA/RXB (pins 1,23) | UART receive inputs | Channel A/B serial inputs; internally disconnected in loopback mode; 5 V tolerant |
| RTSA/RTSB (pins 30,16) | Request-to-send outputs | Active-LOW RTS signals; used for automatic RS-485 driver direction control when Auto-RTS enabled |
| CTSA/CTSB (pins 31,15) | Clear-to-send inputs | Active-LOW CTS signals; enable hardware flow control - transmission halts if CTS is HIGH |
| GPIO0–GPIO7 (pins 17–27) | Programmable I/O | Configurable as DSR/DTR/RI/CD modem pins or general-purpose I/O via IOControl register bits |
| RESET (pin 2) | Hardware reset | Active-LOW asynchronous reset; initializes most registers but preserves DLL/DLH/XON/XOFF values |
Key Features
| Feature | Design Value |
|---|---|
| Auto RS-485 direction control | RTS-driven automatic DE/RE toggling eliminates external logic and reduces component count in half-duplex bus designs |
| Software reset capability | Full UART register reset via software command - enables runtime recovery without hardware reset assertion or system interruption |
| Backward-compatible 16C450 register map | Enables direct reuse of existing UART drivers and firmware across platforms, reducing porting effort and validation time |
| Independent FIFO trigger levels | Separate programmable RX/TX interrupt thresholds per channel - optimizes interrupt frequency and CPU load for asymmetric traffic patterns |
| IrDA SIR at 1.152 Mbit/s | Enables faster infrared data transfer than standard 115.2 kbit/s SIR - supports higher-bandwidth short-range wireless use cases |
Applications
| Industrial Automation Gateway | Portable Medical Device Interface |
|---|---|
Use Scenario: Connecting PLCs and field sensors to a central controller via RS-485 while interfacing to an ARM host over I²C. IC Role / Device Role / Timing Role: Dual UART bridge converting I²C commands into RS-485 serial streams with automatic driver direction control and hardware flow control. Use Value: Eliminates need for discrete level shifters and direction logic; 64-byte FIFOs prevent overrun during burst sensor reads at 5 Mbit/s baud. |
Use Scenario: Enabling Bluetooth/WiFi module communication and patient monitor telemetry in a handheld diagnostic tool powered by a Li-ion battery. IC Role / Device Role / Timing Role: Low-power UART expander providing two isolated serial paths - one for BLE AT-command interface, one for sensor data streaming. Use Value: Sleep current <30 µA extends battery runtime; IrDA SIR at 1.152 Mbit/s supports rapid firmware updates via infrared docking cradle. |
| Cellular Data Terminal | Smart Energy Meter Communication Hub |
Use Scenario: Integrating GSM/GPRS modem and GPS receiver into a compact telematics unit using a single microcontroller with limited UART peripherals. IC Role / Device Role / Timing Role: Dual-channel SPI-UART bridge enabling simultaneous modem AT command handling and GPS NMEA parsing at independent baud rates. Use Value: SPI interface allows high-speed configuration (15 Mbit/s) and data transfer; 8 GPIOs manage modem power-on, reset, and status LEDs. |
Use Scenario: Supporting DLMS/COSEM protocol over RS-485 (meter reading) and M-Bus (heat cost allocator) in a DIN-rail mounted utility meter gateway. IC Role / Device Role / Timing Role: Protocol-transparent UART translator with automatic RS-485 polarity inversion and robust noise filtering on I²C lines. Use Value: I²C Fast-mode (400 kbit/s) ensures fast register access; industrial temp rating (−40 °C to +95 °C) guarantees reliability in outdoor enclosures. |
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,151 | Max SPI speed 4 Mbit/s; IrDA SIR up to 115.2 kbit/s only; otherwise identical register set and pinout | Limited to lower-speed SPI hosts and basic infrared; lacks high-speed IrDA and fast SPI needed for bandwidth-constrained systems | Select when cost sensitivity outweighs need for 15 Mbit/s SPI or 1.152 Mbit/s IrDA - same footprint and software compatibility |
| MAX3107ETJ+ | Single-channel UART; SPI-only interface; no IrDA; 128-byte FIFOs; ±15 kV ESD protection on UART pins | Better suited for high-noise industrial RS-232/RS-485 links where ESD robustness is critical, but lacks dual-channel and IrDA capability | Choose for single-UART designs requiring extreme ESD immunity and larger FIFO depth; not a drop-in replacement due to channel count and feature mismatch |
Compared with SC16IS752IBS,151 and MAX3107ETJ+, the SC16IS762IBS,151 uniquely delivers dual UARTs with 15 Mbit/s SPI, 1.152 Mbit/s IrDA, and automatic RS-485 control in HVQFN32 - making it optimal for space-constrained, multi-protocol, battery-aware embedded gateways.
Availability
SC16IS762IBS,151 is available at Aetrix Electronics and suitable for industrial automation gateways, portable medical diagnostics, cellular telematics terminals, smart energy metering, and battery-operated IoT edge nodes requiring stable component supply and long-term lifecycle support.
Supply support for SC16IS762IBS,151 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, RF, and mixed-signal IC design.
The SC16IS762IBS,151 belongs to NXP's serial interface bridge product line, engineered specifically for embedded systems needing reliable, low-power expansion of UART functionality over I²C or SPI buses in space- and power-constrained environments.
FAQ
What interface modes does the SC16IS762IBS,151 support, and how is selection performed?
The SC16IS762IBS,151 supports both I²C-bus (Fast-mode, up to 400 kbit/s) and SPI (Mode 0, up to 15 Mbit/s) interfaces. Selection is controlled by the logic level on the I2C/SPI pin (pin 6): HIGH configures I²C mode, LOW configures SPI mode. This pin must be set at power-up and cannot be changed dynamically during operation. In I²C mode, pins CS/A0 and SI/A1 serve as address-select inputs; in SPI mode, they become chip select and data input, respectively.
Does the SC16IS762IBS,151 support automatic RS-485 driver direction control, and how is it implemented?
Yes, the SC16IS762IBS,151 supports automatic RS-485 driver direction control using the RTSA and RTSB pins. When Auto-RTS is enabled via the Enhanced Features Register (EFR[6]), the RTS output toggles based on RX FIFO fill level - asserting LOW to enable the RS-485 driver when space is available and de-asserting HIGH when the FIFO nears capacity. This eliminates external direction-control logic and ensures glitch-free half-duplex bus operation.
What is the maximum IrDA SIR data rate supported by the SC16IS762IBS,151, and is it backward compatible?
The SC16IS762IBS,151 supports IrDA SIR at up to 1.152 Mbit/s - a capability exclusive to the SC16IS762 family (SC16IS752 supports only 115.2 kbit/s). This higher rate is not compatible with IrDA MIR at the same speed. The device remains backward compatible with standard IrDA SIR at 115.2 kbit/s and includes built-in encoder/decoder circuitry requiring no external components.
How does the SC16IS762IBS,151 handle low-power operation, and what is its sleep current?
The SC16IS762IBS,151 enters sleep mode when EFR[4] and IER[4] are set, RX is idle, TX FIFO and shift register are empty, and no pending interrupts remain (except THR). In this state, it draws less than 30 µA at 3.3 V. Wake-up occurs automatically on RX activity or IRQ assertion. This ultra-low sleep current significantly extends battery life in portable and remote monitoring applications.
Can the SC16IS762IBS,151's GPIO pins be used as modem control signals, and how is their function selected?
Yes, all eight GPIO pins (GPIO0–GPIO7) on the SC16IS762IBS,151 can be configured as modem control signals - DSR/DTR/RI/CD for channels A and B - via bits in the IOControl register (bit 1 for DSRA/DTRA/CDA/RIA; bit 2 for DSRB/DTRB/CDB/RIB). When not used as modem pins, they operate as general-purpose bidirectional I/Os with programmable direction and interrupt-on-change capability.
SC16IS762IBS,151 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,151 FAQ
1.How can I place an order for SC16IS762IBS,151 through Aetrix?
Please submit a Request for Quotation (RFQ) for SC16IS762IBS,151 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,151 reliable?
The price and inventory of SC16IS762IBS,151 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC16IS762IBS,151 is usually 5 days.
3.What payment methods are accepted for SC16IS762IBS,151?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC16IS762IBS,151 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC16IS762IBS,151?
SC16IS762IBS,151 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC16IS762IBS,151 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,151?
For technical support, including SC16IS762IBS,151 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC16IS762IBS,151 requirements.
6.How does Aetrix verify that SC16IS762IBS,151 is sourced from the original manufacturer or authorized distributors?
All SC16IS762IBS,151 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,151 meets industry standards.
7.What is the process for return or replacement of SC16IS762IBS,151?
All SC16IS762IBS,151 units undergo pre-shipment inspection (PSI). If there is an issue with SC16IS762IBS,151, 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,151 part is unused and in its original packaging.
Return procedure for SC16IS762IBS,151:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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