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NXP Semiconductors SC16IS762IPW,112
- Part No.:
- SC16IS762IPW,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Controllers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SC16IS762IPW,112.pdf
- Description:
- IC DUAL UART 64BYTE 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,721
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Product details
Overview
SC16IS762IPW,112 from NXP Semiconductors is a dual-channel UART IC with I²C/SPI host interface, 64-byte TX/RX FIFOs per channel, IrDA SIR support up to 1.152 Mbit/s, and 8 programmable GPIOs - used in industrial RS-232/RS-485 protocol bridging and battery-powered handheld devices.
For engineers reviewing the SC16IS762IPW,112 datasheet, SC16IS762IPW,112 pinout, SC16IS762IPW,112 application, or SC16IS762IPW,112 equivalent, this page delivers verified technical context, real-world timing roles, functional differences vs. SC16IS752, and precise pin-level design meaning for TSSOP28 layout and flow-control implementation.
Technical Context
The SC16IS762IPW,112 implements two independent 16C450-compatible UART channels with fully programmable framing (5–8 bit, 1/1.5/2 stop bits, parity), auto hardware flow control (RTS/CTS), and software flow control (Xon/Xoff) with dual-character support. Its register set enables drop-in software porting from legacy platforms.
It integrates a 15 Mbit/s SPI target interface (vs. 4 Mbit/s on SC16IS752) and IrDA SIR encoder/decoder supporting 1.152 Mbit/s - distinct from MIR - with built-in crystal oscillator circuitry (XTAL1/XTAL2) and sleep current <30 μA at 3.3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Interface | I²C-bus (Fast Mode, 400 kbit/s) or SPI (Mode 0, 15 Mbit/s max); selected via I2C/SPI pin |
| UART Channels | Dual full-duplex UARTs (Channel A and B), each with independent TX/RX, RTS/CTS, and modem control pins |
| FIFO Depth | 64 bytes transmit + 64 bytes receive per channel; supports programmable trigger levels via FCR/TLR registers |
| IrDA Support | Built-in IrDA SIR encoder/decoder; supports 1.152 Mbit/s (not compatible with IrDA MIR at same speed) |
| GPIO Pins | 8 bidirectional programmable I/O pins (GPIO0–GPIO7), configurable as modem signals (DSR/DTR/RI/CD) or general-purpose |
| Supply & Temp | 2.5 V or 3.3 V operation; industrial temperature range −40 °C to +95 °C; 5 V tolerant inputs |
| Package | TSSOP28 (SOT361-1), 4.4 mm body width; lead-free, RoHS compliant |
Pinout & Package
TSSOP28 package (SOT361-1), 28-pin plastic thin shrink small outline, 0.65 mm pitch, exposed pad not present. Pin functions validated per NXP Rev. 9.1 datasheet Figure 2a/b and Table 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RTSA / RTSB | UART request-to-send (active LOW), Channel A/B | Auto-RTS output controlled by RX FIFO level; halts/resumes transmission based on TCR-programmed trigger thresholds |
| CTSA / CTSB | UART clear-to-send (active LOW), Channel A/B | Auto-CTS input enabling hardware flow control; must be LOW before transmitting next character |
| TXA / TXB, RXA / RXB | UART serial data I/O, Channel A/B | Full-duplex asynchronous serial interface; supports RS-232/RS-485 level-shifting externally; loopback mode disables physical pins |
| IRQ | Interrupt request (open-drain, active LOW) | Seven-priority interrupt output (modem status, FIFO, Xoff, line error); requires external 1 kΩ pull-up to VDD (3.3 V) |
| I2C/SPI | Interface selection control | Logic HIGH = I²C mode; logic LOW = SPI mode; determines function of SDA/SO/SCL/SCLK/CS/A0/A1 pins |
| GPIO0–GPIO7 | Programmable I/O or modem signal pins | Configurable via IOControl register; GPIO0–GPIO3 map to Channel B modem signals; GPIO4–GPIO7 map to Channel A |
| RESET | Hardware reset (active LOW) | Asynchronous reset clearing most internal registers; TX and RTS outputs go HIGH post-reset; IRQ pulled HIGH externally |
Key Features
| Feature | Design Value |
|---|---|
| Backward-compatible register set | Fully matches 16C450 addressing and bit mapping - enables direct software reuse without driver rewrite |
| Automatic RS-485 direction control | RTS pin drives RS-485 transceiver DE/RE; polarity invertible via register bit for compatibility with common drivers |
| Independent FIFO enable/disable | Transmitter and receiver FIFOs per channel can be enabled/disabled separately - allows mixed polled/interrupt operation |
| Programmable special character detection | XON/XOFF characters configurable as single or dual byte; special character (XOFF2) triggers interrupt without halting TX |
| Sleep mode with wake-on-event | Enters <30 μA sleep when EFR[4] and IER[4] are set; wakes on IRQ-triggering events (e.g., RX data, GPIO change, modem flag) |
Applications
| Industrial RS-485 Gateway | Portable Medical Device Interface |
|---|---|
|
Use Scenario: PLC-to-sensor network bridge converting SPI/I²C microcontroller data to RS-485 Modbus RTU. IC Role / Device Role / Timing Role: Dual UART acts as protocol translator; Channel A handles master polling, Channel B manages slave response buffering with 64-byte FIFOs. Use Value: Eliminates overrun errors during burst transmissions; automatic RTS-driven RS-485 direction control removes external logic. |
Use Scenario: Handheld ECG monitor using low-power MCU with no native UART, connecting to Bluetooth module and SD card via serial interfaces. IC Role / Device Role / Timing Role: SC16IS762IPW,112 provides two isolated UART paths while operating at 2.5 V and entering sub-30 μA sleep between measurements. Use Value: Extends battery life via sleep mode; 8 GPIOs configure SD card detect and Bluetooth reset without additional I/O expanders. |
| Cellular Data Terminal | Factory Automation HMI |
|
Use Scenario: Ruggedized LTE terminal interfacing MCU to cellular modem (AT command) and GPS receiver (NMEA). IC Role / Device Role / Timing Role: Channel A runs AT command exchange at 115.2 kbit/s with hardware flow control; Channel B streams GPS NMEA at 9600 baud with software Xon/Xoff. Use Value: Prevents command loss during high-throughput LTE handshakes; dual-character Xoff support avoids false pauses on NMEA checksum bytes. |
Use Scenario: Touchscreen HMI panel communicating with multiple PLCs over RS-232 and RS-485 links in a noisy factory environment. IC Role / Device Role / Timing Role: SC16IS762IPW,112 serves as central serial hub; IrDA SIR enables wireless firmware updates to field devices without cables. Use Value: 1.152 Mbit/s IrDA enables <5 s firmware patch delivery; noise-filtered I²C interface ensures reliable configuration under EMI stress. |
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 clock 4 Mbit/s; IrDA SIR limited to 115.2 kbit/s; otherwise identical register map and pinout | Lower-speed embedded controllers without high-bandwidth peripheral needs; cost-sensitive designs where 1.152 Mbit/s IrDA is unnecessary | Select SC16IS752IPW only if SPI bandwidth ≤4 Mbit/s suffices and IrDA >115.2 kbit/s is unused. |
| MAX3108EASA+ | Single UART; SPI-only interface (no I²C); integrated ±15 kV ESD protection; no IrDA; different register architecture | Space-constrained designs needing robust RS-232 I/O with minimal external components; no dual-channel or IrDA requirement | Choose MAX3108EASA+ only for single-UART, high-ESD, SPI-only systems where software porting effort is acceptable. |
Compared with SC16IS752IPW, the SC16IS762IPW,112 enables faster host-to-peripheral data bursts and higher-speed infrared updates, while MAX3108EASA+ trades dual-channel flexibility and IrDA for integrated protection and smaller footprint - requiring full driver rework.
Availability
SC16IS762IPW,112 is available at Aetrix Electronics and suitable for industrial RS-485 gateways, portable medical interfaces, and cellular data terminals requiring stable component supply across extended product lifecycles.
Supply support for SC16IS762IPW,112 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.
The SC16IS762IPW,112 belongs to NXP's SC16IS7xx family of intelligent UART bridges, designed specifically to offload serial protocol conversion and flow control from resource-constrained microcontrollers in space- and power-sensitive systems.
FAQ
What is the maximum SPI clock frequency supported by SC16IS762IPW,112?
The SC16IS762IPW,112 supports SPI clock speeds up to 15 Mbit/s in SPI Mode 0 - a key differentiator from the SC16IS752IPW (4 Mbit/s max). This enables high-throughput data transfer between host MCU and UART channels, especially critical in burst-mode sensor aggregation or firmware update scenarios. The SC16IS762IPW,112 maintains full register compatibility despite the higher clock rate.
Does SC16IS762IPW,112 support both I²C and SPI simultaneously?
No - the SC16IS762IPW,112 supports either I²C-bus or SPI interface, selected permanently at power-up via the I2C/SPI pin (HIGH = I²C, LOW = SPI). Pin functions like SDA/SO and SCL/SCLK are mutually exclusive per mode. The SC16IS762IPW,112 does not allow runtime switching or concurrent use of both buses.
How does IrDA SIR at 1.152 Mbit/s differ from standard 115.2 kbit/s on SC16IS762IPW,112?
The SC16IS762IPW,112's 1.152 Mbit/s IrDA SIR mode is electrically and protocol-compatible with IrDA 1.4 SIR PHY but is not interoperable with legacy 115.2 kbit/s-only devices at that speed. It requires matching IrDA transceivers and correct pulse-width tuning. The SC16IS762IPW,112 retains backward compatibility with 115.2 kbit/s operation via register configuration.
Can SC16IS762IPW,112 operate with a 2.5 V supply?
Yes - the SC16IS762IPW,112 is specified for 2.5 V or 3.3 V VDD operation, with corresponding pull-up resistor values (1.5 kΩ for 2.5 V, 1 kΩ for 3.3 V) required on the open-drain IRQ pin. All I/Os remain 5 V tolerant regardless of supply voltage, simplifying level-shifting in mixed-voltage systems using the SC16IS762IPW,112.
What happens to UART outputs during hardware reset of SC16IS762IPW,112?
Upon assertion of the active-LOW RESET pin, the SC16IS762IPW,112 drives TXA/TXB HIGH and RTSA/RTSB HIGH; all GPIOs default to input mode; IRQ goes HIGH (via external pull-up). Internal registers reset per Table 4 in the datasheet, but DLL/DLH/XON1/XON2/XOFF1/XOFF2 retain prior values - ensuring baud rate and flow control settings persist across resets unless explicitly rewritten. This behavior is consistent across all SC16IS762IPW,112 units.
SC16IS762IPW,112 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,112 FAQ
1.How can I place an order for SC16IS762IPW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for SC16IS762IPW,112 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,112 reliable?
The price and inventory of SC16IS762IPW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC16IS762IPW,112 is usually 5 days.
3.What payment methods are accepted for SC16IS762IPW,112?
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4.How is shipping managed for SC16IS762IPW,112?
SC16IS762IPW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC16IS762IPW,112 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,112?
For technical support, including SC16IS762IPW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC16IS762IPW,112 requirements.
6.How does Aetrix verify that SC16IS762IPW,112 is sourced from the original manufacturer or authorized distributors?
All SC16IS762IPW,112 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,112 meets industry standards.
7.What is the process for return or replacement of SC16IS762IPW,112?
All SC16IS762IPW,112 units undergo pre-shipment inspection (PSI). If there is an issue with SC16IS762IPW,112, 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,112 part is unused and in its original packaging.
Return procedure for SC16IS762IPW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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