SP3223EUCY-L - +3.0V to +5.5V RS-232 Transceiver | MaxLinear
MPN: SP3223EUCY-L ✓ Hoạt độngSP3223EUCY-L Tóm tắt
What is an RS-232 transceiver? An RS-232 transceiver is an interface IC that converts logic-level UART signals (typically 0V/3.3V or 0V/5V CMOS/TTL) into the bipolar ±5V to ±15V voltage swings defined by the EIA/TIA-232-F standard, which legacy PCs, industrial controllers, point-of-sale terminals, and instrumentation equipment use for serial communication. Within the broader component taxonomy, RS-232 transceivers sit under Interface ICs, alongside RS-485 transceivers, CAN transceivers, and USB-to-UART bridges.
The SP3223EUCY-L delivers compliant RS-232 performance from a single 3.0V to 5.5V supply, interoperates with EIA/TIA-232 down to a 2.7V source, and adheres to EIA/TIA-562 at reduced drive levels. Its AUTO ON-LINE® circuitry automatically wakes the device from shutdown when a valid RS-232 signal is detected on the receiver input, eliminating the need for external activity-detect logic. An enhanced ESD rating of ±15 kV Human Body Model on the driver outputs and receiver inputs provides robust protection against cable-discharge transients in real-world environments.
Typical applications include notebook and handheld computer serial ports, industrial PDA cradles, point-of-sale (POS) terminals, battery-powered diagnostic equipment, and any portable embedded system that needs a true RS-232 link without the bulk of a ±12V supply. The 0.1 µF charge-pump capacitors and 20-pin TSSOP footprint allow a complete 2-driver/2-receiver RS-232 port to fit in roughly 30 mm² of board area. The 0°C to +70°C commercial operating range suits indoor enclosures and consumer-grade handhelds; for industrial temperature designs, an 'I' suffix variant (SP3223EUCY-L is the commercial-grade part) is available from the same family.
When designing with this part, remember that the 1000 kbps data rate requires the AUTO ON-LINE® wake-up path to settle; if the system depends on sub-millisecond link bring-up after power-down, gate the FORCEON pin externally. Place the four 0.1 µF charge-pump capacitors (C1–C4) within 3 mm of the IC pins to keep switching noise off the analog ground plane. The "-L" suffix indicates the lead-free / RoHS-compliant finish; pair this with a nickel-palladium-gold (NiPdAu) or matte-tin PCB surface finish to prevent solderability issues during reflow.
This page synthesizes MaxLinear distributor pricing, drop-in same-package alternatives, and practical charge-pump PCB layout guidance that the bare datasheet does not present in a single place.
Bộ thay thế dễ dàng lắp đặt cho SP3223EUCY-L — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
SP3223EUCY-L/TR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
SP3223EBCY-L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
SP3223ICY-L
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MAX3223ECAP+
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ICL3223EIAZ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TRS3223EIDBR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
SP3223EUCY-L Thông số kỹ thuật
| Chức năng | RS-232 Transceiver (2 drivers / 2 receivers) |
| Protocol | EIA/TIA-232-F, EIA/TIA-562 |
| Tốc độ dữ liệu | 1000 kbps (1 Mbps) guaranteed |
| Supply Voltage (VCC) | 3.0 V to 5.5 V |
| Typical Supply Current | 0.3 mA (no load) |
| Number of External Capacitors | 4 |
| Charge-Pump Capacitor Value | 0.1 µF |
| Driver Output ESD | ±15 kV HBM |
| Receiver Input ESD | ±15 kV HBM |
| Nhiệt độ hoạt động | 0°C to +70°C (commercial) |
| Hộp | 20-pin TSSOP (CY suffix) |
| Kiểu lắp đặt | Surface Mount |
| AUTO ON-LINE® Circuitry | Yes (automatic wake from shutdown) |
| Shutdown Mode | Yes (FORCEOFF / FORCEON pins) |
| Trạng thái RoHS | Compliant (lead-free "-L" finish) |
Cấu hình chân SP3223EUCY-L
| Chân 1 | T1OUT — RS-232 driver 1 output |
| Chân 2 | T2OUT — RS-232 driver 2 output |
| Chân 3 | R1IN — RS-232 receiver 1 input |
| Chân 4 | R2IN — RS-232 receiver 2 input |
| Chân 5 | R1OUT — TTL/CMOS receiver 1 output |
| Chân 6 | R2OUT — TTL/CMOS receiver 2 output |
| Chân 7 | T1IN — TTL/CMOS driver 1 input |
| Chân 8 | T2IN — TTL/CMOS driver 2 input |
| Chân 9 | GND — Ground |
| Chân 10 | VCC — Supply voltage (3.0V–5.5V) |
| Chân 11 | FORCEOFF — Force shutdown, active-low |
| Chân 12 | FORCEON — Force on, active-high |
| Chân 13 | INVALID — Valid RS-232 signal indicator, active-high |
| Chân 14 | C1+ — Charge-pump capacitor 1 positive |
| Chân 15 | V+ — Positive charge-pump output (+5.5V typ) |
| Chân 16 | C1- — Charge-pump capacitor 1 negative |
| Chân 17 | C2+ — Charge-pump capacitor 2 positive |
| Chân 18 | C2- — Charge-pump capacitor 2 negative |
| Chân 19 | V- — Negative charge-pump output (-5.5V typ) |
| Chân 20 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
SP3223EUCY-L phù hợp cho 6 Áp dụngs: Notebook Computer Serial Port, Handheld Terminal / PDA Cradle, Point-of-Sale (POS) Terminal, Industrial Diagnostic / Test Equipment, Embedded Linux Debug Console, Bluetooth HCI Bridge to RS-232.
Notebook Computer Serial Port
The SP3223EUCY-L fits the notebook docking-station serial port because its 3.0V–5.5V single-supply operation runs directly from the laptop's 3.3V or 5V rail, eliminating the ±12V converter that older RS-232 designs require. The 1000 kbps data rate supports legacy modem and debug-console throughput without bottlenecking modern UARTs. Four 0.1 µF charge-pump capacitors (vs the 1 µF parts used by older transceivers) cut BOM cost and PCB area by roughly 60%, a critical savings in slim ultrabook chassis where every square millimeter counts.
Được đề xuất
Handheld Terminal / PDA Cradle
In battery-powered handheld terminals the SP3223EUCY-L's 1 µA typical shutdown current is the dominant selection criterion, because the RS-232 port is only active when the device is cradled for sync. The AUTO ON-LINE® circuitry automatically wakes the part when a valid RS-232 signal arrives at R1IN or R2IN, eliminating the need for an external activity-detect interrupt and reducing firmware complexity. The 0°C to +70°C commercial operating range suits indoor retail, warehouse, and healthcare-handheld environments where the cradle sits on a desk.
Được đề xuất
Point-of-Sale (POS) Terminal
POS terminals rely on the SP3223EUCY-L's ±15 kV HBM ESD rating on driver outputs and receiver inputs to survive the hot-plug and cable-discharge transients that occur when cashiers unplug PIN pads and barcode scanners mid-transaction. The 1000 kbps data rate keeps the latency low for chip-card and NFC reader side-channels. The 20-pin TSSOP footprint simplifies layout under the display hinge where mechanical stress concentrates connector pins and demands a small, robust RS-232 IC.
Được đề xuất
Industrial Diagnostic / Test Equipment
Battery-powered oscilloscopes, data loggers, and field-service instruments use the SP3223EUCY-L because the AUTO ON-LINE® wake-up circuit eliminates a continuous UART-activity interrupt on the host microcontroller, reducing overall system power by up to 30% during idle periods. The 1000 kbps rate supports fast firmware-download and log-retrieval sessions in the field. The "-L" suffix ensures lead-free, RoHS-compliant assembly, which is mandatory for sale into the EU and California markets.
Được đề xuất
Embedded Linux Debug Console
Linux-based SBCs and SOM designs such as those using the XMC4500F100K1024ACXQSA1 or XMC1404Q064X0200AAXUMA1 rely on the SP3223EUCY-L to expose the kernel console UART as a true RS-232 DB-9 port for legacy development hosts. The 3.0V–5.5V supply window tolerates either the 3.3V SoC rails or the 5V USB-UART bridge rails, simplifying board stack-ups. Four 0.1 µF 0402-size capacitors (vs the older 1 µF 0603 designs) keep the BOM compact for credit-card-sized carrier boards.
Được đề xuất
Bluetooth HCI Bridge to RS-232
Bluetooth modules that expose an HCI (Host Controller Interface) over RS-232 — for legacy automotive diagnostic tools, industrial gateways, and medical instrument docks — pair with the SP3223EUCY-L to deliver a robust 1 Mbps link. The AUTO ON-LINE® wake-on-RX feature is critical because the Bluetooth radio asserts a wake line only when an incoming ACL connection is detected; the SP3223EUCY-L can self-wake from a valid incoming RS-232 signal without host intervention. The 3.3V compatibility matches standard Bluetooth module rails.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho SP3223EUCY-L — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | SP3223EUCY-L/TR | SP3223EBCY-L | MAX3223ECAP+ | ICL3223EIAZ | TRS3223EIDBR |
|---|---|---|---|---|---|---|
| Package | 20-TSSOP (CY) | 20-TSSOP (CY) - same | 20-TSSOP (CY) - same | 20-SSOP (CAP) - same pinout | 20-SSOP (IA) - same pinout | 20-SSOP (DB) - same pinout |
| Brand | MaxLinear | MaxLinear (same) | MaxLinear (same) | Maxim Integrated | Renesas Electronics | Texas Instruments |
| Supply Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V |
| Data Rate | 1000 kbps | 1000 kbps | 1000 kbps | 500 kbps | 500 kbps | 1000 kbps |
| Charge-Pump Caps | 4 × 0.1 µF | 4 × 0.1 µF | 4 × 0.1 µF | 4 × 0.1 µF | 4 × 0.1 µF | 4 × 0.1 µF |
| ESD Rating (HBM) | ±15 kV | ±15 kV | ±15 kV | ±15 kV | ±15 kV | ±15 kV |
| Operating Temperature | 0°C to +70°C | 0°C to +70°C | 0°C to +70°C | 0°C to +70°C | -40°C to +85°C | -40°C to +85°C |
| AUTO ON-LINE® Wake | Yes | Yes | Yes | Yes | Yes | Yes |
Bảo phân biệt quan trọng
- Highest data rate in the SP3223 family at 1000 kbps (vsMAX3223ECAP+ (Maxim))
- Same AUTO ON-LINE® topology as industry-standard MAX3223E (vsMAX3223ECAP+ (Maxim))
- Single 3.0–5.5V supply with 0.1 µF charge-pump capacitors (vsICL3223EIAZ (Renesas))
- Lead-free RoHS finish with MSL-1 floor life (vsTRS3223EIDBR (TI))
Ghi chú thiết kế
Place the four charge-pump capacitors (C1, C2, C3, C4 — also labelled C1+, C1-, C2+, C2-) within 3 mm of the SP3223EUCY-L pins and use 0.1 µF X7R ceramics with a 10V or higher rating. Keep the V+ and V- traces short and away from any TTL/CMOS logic traces to avoid injecting 200 kHz switching ripple into the analog ground plane. A single 0.1 µF bypass on VCC placed within 5 mm of pin 10 is mandatory.
Estimated: total quiescent draw at 3.3V VCC with all drivers loaded is approximately 4–6 mA (including charge-pump losses). For battery-powered designs, gate FORCEOFF low during deep sleep to drop supply current to 1 µA typical, then let AUTO ON-LINE® reassert the part when a valid RS-232 signal arrives. Driving FORCEON high disables AUTO ON-LINE® — only do this if your firmware manages shutdown explicitly.
Do not connect C1–C4 to anything other than the documented SP3223EUCY-L charge-pump pins; swapping C1+ and C1- reverses the polarity and prevents V+ from rising. The INVALID output is active-high only when both R1IN and R2IN are within valid RS-232 levels — it is not a general activity flag. The 1000 kbps data rate is only guaranteed with 0.1 µF capacitors; substituting 1 µF parts (as on the older SP3232) violates the datasheet and reduces noise immunity.
Route the four RS-232 input traces (T1IN, T2IN, R1IN, R2IN) away from the V+/V- charge-pump nodes to minimize crosstalk. Keep the analog GND (pin 9) tied to a single ground via, with no other high-current return currents sharing the via. For noisy environments, add a ferrite bead in series with VCC and a 10 µF tantalum reservoir close to pin 10.
Thông tin tuân thủ
Lead-free finish per the "-L" suffix; RoHS and REACH compliant per MaxLinear product declaration. Not AEC-Q100 qualified (commercial grade only) — choose SP3223EUIAZ or similar industrial-grade variants for automotive.
