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NXP Semiconductors SC16IS762IPW-S
- Part No.:
- SC16IS762IPW-S
- Manufacturer:
- NXP Semiconductors
- Category:
- Controllers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SC16IS762IPW-S.pdf
- Description:
- IC UART DUAL I2C/SPI 28-TSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SC16IS762IPW-S from NXP Semiconductors is a dual-channel UART IC with I²C/SPI interface, 64-byte TX/RX FIFOs per channel, IrDA SIR support up to 1.152 Mbit/s, and 8 programmable GPIOs - used in battery-powered industrial gateways for protocol bridging between microcontroller I²C buses and RS-485 field devices.
For engineers reviewing the SC16IS762IPW-S datasheet, SC16IS762IPW-S pinout, SC16IS762IPW-S application, or SC16IS762IPW-S equivalent, key selection considerations include SPI clock speed (15 Mbit/s), IrDA SIR capability (1.152 Mbit/s), dual UART flow control (Auto-RTS/CTS), 64-byte FIFO depth, and TSSOP28 package compatibility with space-constrained embedded designs.
Technical Context
The SC16IS762IPW-S implements two independent 16C450-compatible UART channels with fully programmable framing (5–8 bit, 1/1.5/2 stop bits, parity options) and integrated baud rate generators supporting up to 5 Mbit/s in 16× mode. Its register set enables drop-in software porting from legacy UART platforms.
It supports both I²C-bus (Fast-mode, 400 kbit/s) and SPI (Mode 0, 15 Mbit/s max) host interfaces via hardware-selectable I2C/SPI pin, with dedicated interrupt output (IRQ) and hardware reset (RESET). Sleep current is <30 μA at 3.3 V, enabling low-power operation in portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| UART Channels | Dual independent full-duplex UARTs (Channel A and B), each with separate TX/RX/RTS/CTS pins and configurable I/O roles. |
| FIFO Depth | 64 bytes transmit and 64 bytes receive per channel - reduces CPU interrupt load and prevents overrun in bursty serial traffic. |
| Max SPI Speed | 15 Mbit/s - enables high-throughput host communication, distinguishing SC16IS762IPW-S from SC16IS752 (4 Mbit/s). |
| IrDA SIR Speed | Up to 1.152 Mbit/s - supports infrared data exchange compliant with IrDA Physical Layer v1.4, not compatible with MIR at same speed. |
| GPIO Pins | 8 bidirectional programmable I/O pins (GPIO0–GPIO7), configurable as modem control signals (DTR/DSR/RI/CD) or general-purpose I/O via IOControl register. |
| Supply Voltage | 2.5 V or 3.3 V operation - supports mixed-voltage system integration; inputs are 5 V tolerant for robustness. |
| Operating Temp | −40 °C to +95 °C - qualified for industrial environments including factory automation and outdoor telemetry nodes. |
Pinout & Package
TSSOP28 package (SOT361-1), 4.4 mm body width, lead pitch 0.65 mm - optimized for compact PCB layouts in handheld and embedded modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RTSA / RTSB | UART request-to-send (active LOW) | Hardware flow control outputs - automatically asserted/deasserted based on RX FIFO level when Auto-RTS enabled. |
| CTSA / CTSB | UART clear-to-send (active LOW) | Hardware flow control inputs - suspend transmission when deasserted; monitored only if Auto-CTS enabled. |
| TXA / TXB | UART transmitter outputs | CMOS-level serial outputs - drive RS-232/RS-485 transceivers; support local loopback mode for self-test. |
| RXA / RXB | UART receiver inputs | CMOS-level serial inputs - accept TTL/CMOS logic levels; internally disabled during loopback mode. |
| IRQ | Interrupt request (open-drain) | Active-LOW shared interrupt signal - indicates 7 prioritized conditions (RX ready, TX empty, modem change, Xoff, etc.). |
| I2C/SPI | Interface select input | Logic HIGH = I²C mode; LOW = SPI mode - configures pin functions (SCL/SCLK, SDA/SI/SO, CS/A0, SI/A1) at power-up. |
| RESET | Hardware reset (active LOW) | Asynchronous reset - clears most registers and sets outputs (TX, RTS) HIGH; GPIOs default to input mode. |
| GPIO0–GPIO7 | Programmable I/O terminals | Configurable as DSR/DTR/RI/CD modem pins or generic I/O - controlled via IOControl and IODir registers. |
Key Features
| Feature | Design Value |
|---|---|
| Auto hardware flow control | Independent Auto-RTS and Auto-CTS per channel - eliminates software polling and prevents RX FIFO overrun without CPU intervention. |
| Software flow control | Programmable Xon/Xoff characters (single/dual) with configurable detection logic - enables protocol-compliant pause/resume in ASCII-based links. |
| RS-485 driver control | RTS-driven direction control with polarity inversion option - simplifies half-duplex RS-485 bus design using single external transistor or gate driver. |
| Backward register compatibility | Fully compatible with 16C450 register map - allows reuse of existing UART drivers and OS abstractions with minimal porting effort. |
| Sleep mode | <30 μA quiescent current at 3.3 V - entered automatically when EFR[4] and IER[4] are set and no activity detected on UART or GPIO lines. |
Applications
| Industrial Serial Gateway | Portable Diagnostic Tool |
|---|---|
|
Use Scenario: A PLC edge controller uses I²C to communicate with an MCU and converts commands to RS-485 Modbus RTU for field sensors. IC Role / Device Role / Timing Role: SC16IS762IPW-S acts as a dual-channel protocol bridge - Channel A handles I²C host interface, Channel B drives RS-485 transceiver with automatic RTS-controlled direction. Use Value: 64-byte FIFOs absorb burst command sequences; Auto-RTS/CTS ensures reliable handshaking across noisy industrial wiring without firmware overhead. |
Use Scenario: Handheld medical device tester connects via Bluetooth to a tablet and communicates with legacy ECG monitors over RS-232. IC Role / Device Role / Timing Role: SC16IS762IPW-S serves as dual UART interface - one channel manages Bluetooth module UART, the other connects to RS-232 port with level-shifting. Use Value: 3.3 V/2.5 V operation and <30 μA sleep current extend battery life; IrDA SIR (1.152 Mbit/s) enables optional infrared firmware updates. |
| Cellular Data Terminal | Factory Automation Node |
|
Use Scenario: LTE router aggregates data from multiple Modbus RTU sensors and forwards it to cloud via TCP/IP stack running on host processor. IC Role / Device Role / Timing Role: SC16IS762IPW-S provides two isolated UART paths - one for AT-command control of cellular modem, another for sensor RS-485 polling. Use Value: Independent FIFO trigger levels allow fine-tuned interrupt scheduling; 8 GPIOs configure DTR/DSR handshake with modem and monitor sensor readiness. |
Use Scenario: Compact DIN-rail mounted I/O module reads temperature, pressure, and valve status via RS-485 and reports via CAN bus. IC Role / Device Role / Timing Role: SC16IS762IPW-S interfaces host ARM Cortex-M4 to RS-485 network - uses GPIOs as digital inputs for local alarm buttons and status LEDs. Use Value: −40 °C to +95 °C rating ensures reliability in uncontrolled cabinet environments; SPI interface (15 Mbit/s) sustains high polling rates without bottlenecking host CPU. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual UART with I²C/SPI interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SC16IS752IPW | Max SPI speed 4 Mbit/s; IrDA SIR limited to 115.2 kbit/s; otherwise identical register set and pinout. | Lower-cost option where high-speed SPI or fast IrDA is unnecessary - suitable for basic sensor aggregation with modest throughput. | Select SC16IS752IPW only if SPI bandwidth <4 Mbit/s suffices and IrDA SIR >115.2 kbit/s is not required. |
| MAX3107ETE+ | Single UART channel; SPI-only interface (no I²C); 128-byte FIFO; operates at 2.7–5.5 V; no IrDA support. | Better suited for high-reliability single-channel applications requiring wider voltage range and deeper FIFO, but lacks dual UART and IrDA. | Choose MAX3107ETE+ only when single UART suffices and extended supply range or larger FIFO outweighs need for dual channels and IrDA. |
Compared with SC16IS752IPW and MAX3107ETE+, the SC16IS762IPW-S uniquely combines dual UARTs, 15 Mbit/s SPI, 1.152 Mbit/s IrDA SIR, and I²C/SPI flexibility - making it optimal for space-constrained, battery-aware industrial gateways requiring multi-protocol interoperability.
Availability
SC16IS762IPW-S is available at Aetrix Electronics and suitable for factory automation, portable diagnostic tools, and cellular data terminals requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for SC16IS762IPW-S 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 - delivering high-integration, low-power interface ICs with broad ecosystem support.
The SC16IS762IPW-S belongs to NXP's SC16IS7xx family of intelligent UART bridges - designed specifically to simplify protocol translation between modern microcontrollers (I²C/SPI) and legacy serial peripherals (RS-232/RS-485/IrDA) in resource-constrained edge systems.
FAQ
What is the maximum SPI clock frequency supported by the SC16IS762IPW-S?
The SC16IS762IPW-S supports a maximum SPI clock frequency of 15 Mbit/s - a key differentiator from the SC16IS752IPW-S (4 Mbit/s). This higher speed enables faster register access and bulk data transfers in host-constrained systems. The SC16IS762IPW-S operates in SPI Mode 0 and requires proper setup/hold timing relative to SCLK edges. This specification is confirmed in Section 2.3 of the official NXP datasheet Rev. 9.1.
Does the SC16IS762IPW-S support IrDA SIR at 1.152 Mbit/s in both directions?
Yes, the SC16IS762IPW-S supports full-duplex IrDA SIR at up to 1.152 Mbit/s - including both encoder and decoder functionality. However, this speed is not compatible with IrDA MIR at the same rate. The device implements the IrDA Physical Layer v1.4 specification, and usage requires external IR transceiver components (e.g., Vishay TFBS4650) connected to TXA/RXA or TXB/RXB pins. This capability is exclusive to the SC16IS762IPW-S within the SC16IS7xx family.
How does the SC16IS762IPW-S handle RS-485 driver direction control?
The SC16IS762IPW-S provides hardware-assisted RS-485 direction control via its RTS output pins (RTSA/RTSB), which can be configured to assert during transmission and deassert afterward. It also supports RTS polarity inversion through the Enhanced Features Register (EFR), allowing direct connection to common RS-485 transceivers like the MAX13487 or SN65HVD72. No external logic is needed - the SC16IS762IPW-S manages timing automatically based on TX FIFO state and trigger levels.
Can the SC16IS762IPW-S operate from a 2.5 V supply?
Yes, the SC16IS762IPW-S is fully specified for operation at both 2.5 V and 3.3 V nominal supply voltages. Its I/O pins are 5 V tolerant, enabling safe interfacing with higher-voltage peripherals without level shifters. Internal regulators and logic thresholds are designed for stable operation across this range, and sleep current remains below 30 μA at either voltage - critical for battery-powered applications where the SC16IS762IPW-S is commonly deployed.
Is the SC16IS762IPW-S pin-compatible with the SC16IS752IPW-S in TSSOP28 package?
Yes, the SC16IS762IPW-S and SC16IS752IPW-S share identical TSSOP28 pinouts and register maps - making them drop-in replacements in hardware layout. The only functional differences are the higher SPI speed (15 vs. 4 Mbit/s) and enhanced IrDA SIR (1.152 vs. 0.1152 Mbit/s) in the SC16IS762IPW-S. Firmware written for SC16IS752IPW-S will run unchanged on SC16IS762IPW-S, though enabling the higher-speed features requires explicit configuration.
SC16IS762IPW-S Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- 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:
- 28-TSSOP
- Grade:
- -
- Qualification:
- -
SC16IS762IPW-S FAQ
1.How can I place an order for SC16IS762IPW-S through Aetrix?
Please submit a Request for Quotation (RFQ) for SC16IS762IPW-S 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 SC16IS762IPW-S reliable?
The price and inventory of SC16IS762IPW-S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC16IS762IPW-S is usually 5 days.
3.What payment methods are accepted for SC16IS762IPW-S?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC16IS762IPW-S transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC16IS762IPW-S?
SC16IS762IPW-S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC16IS762IPW-S 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 SC16IS762IPW-S?
For technical support, including SC16IS762IPW-S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC16IS762IPW-S requirements.
6.How does Aetrix verify that SC16IS762IPW-S is sourced from the original manufacturer or authorized distributors?
All SC16IS762IPW-S 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 SC16IS762IPW-S meets industry standards.
7.What is the process for return or replacement of SC16IS762IPW-S?
All SC16IS762IPW-S units undergo pre-shipment inspection (PSI). If there is an issue with SC16IS762IPW-S, 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 SC16IS762IPW-S part is unused and in its original packaging.
Return procedure for SC16IS762IPW-S:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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