My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX3110ECNI+G36
- Part No.:
- MAX3110ECNI+G36
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Controllers
- Package:
- 28-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX3110ECNI+G36.pdf
- Description:
- IC TXRX RS232 SPI W/CAP 28-DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,501
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX3110ECNI+G36 from Maxim Integrated is a SPI/MICROWIRE-compatible UART with integrated ±15kV ESD-protected RS-232 transceiver, 2-driver/2-receiver interface, internal charge-pump capacitors, and crystal oscillator - all in a single 28-pin plastic DIP package. It operates from +5V supply, delivers true RS-232 output levels down to VCC = +4.5V, supports up to 230kbps data rate, and consumes only 600µA active current. It is used in space-constrained industrial front-panel interfaces and battery-powered diagnostic ports.
For engineers reviewing the MAX3110ECNI+G36 datasheet, MAX3110ECNI+G36 pinout, MAX3110ECNI+G36 application, or MAX3110ECNI+G36 equivalent, key selection considerations include its hardware/software shutdown capability (10µA), 8-word receive FIFO for reduced processor overhead, SPI-compatible 16-bit full-duplex interface, and guaranteed EIA/TIA-232 compliance at 230kbps with no external capacitors required.
Technical Context
The MAX3110ECNI+G36 integrates a UART with programmable baud-rate generator (300–230kbaud), crystal oscillator, and 8-deep receive FIFO alongside a dual-driver/dual-receiver RS-232 transceiver featuring proprietary low-dropout output stage and internal charge-pump circuitry generating ±5.4V outputs from +5V supply.
Its SPI/QSPI/MICROWIRE interface uses CPOL = 0 and CPHA = 0 timing, requires 16-bit words for all register accesses, and provides simultaneous DIN latching on SCLK rising edge and DOUT output transitions synchronized to CS falling and SCLK falling edges - enabling deterministic, high-speed microcontroller interfacing without additional glue logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | +4.5V to +5.5V - enables direct compatibility with standard 5V logic systems and eliminates need for level-shifting circuitry. |
| Max Data Rate | 230kbps - guarantees full EIA/TIA-232 voltage swing (±5.4V) and timing compliance at industrial-grade speeds. |
| Supply Current | 600µA typical at +5V - reduces thermal load and extends battery life in portable equipment. |
| Shutdown Current | 10µA with receiver interrupt active - allows external device monitoring while minimizing power during idle periods. |
| ESD Protection | ±15kV IEC 1000-4-2 air discharge - protects RS-232 I/O pins against real-world handling and system-level ESD events. |
| Transceiver Outputs | 2 drivers (T1OUT/T2OUT), 2 receivers (R1OUT/R2OUT) - supports dual-channel RS-232 links (e.g., main port + debug port) on one IC. |
| FIFO Depth | 8-word receive FIFO - reduces CPU interrupt frequency and prevents data loss during burst transmissions. |
Pinout & Package
MAX3110ECNI+G36 is housed in a 28-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole mounting. Pin spacing is 0.1 inch; lead finish is lead-free per JEDEC J-STD-020.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | R2IN | RS-232 receiver input channel 2 - accepts ±25V input range and triggers IRQ on transition during shutdown. |
| 2 | R2OUT | TTL/CMOS-level output from RS-232 receiver 2 - directly interfaces to µC GPIO without level translation. |
| 3 | T2IN | TTL/CMOS-level input to RS-232 transmitter 2 - driven by µC or FPGA for secondary serial channel control. |
| 4 | T1IN | TTL/CMOS-level input to RS-232 transmitter 1 - primary UART transmit path from µC via RTS/CTS handshaking. |
| 5 | R1OUT | TTL/CMOS-level output from RS-232 receiver 1 - feeds primary receive data stream to µC UART logic or GPIO. |
| 6 | R1IN | RS-232 receiver input channel 1 - robust ±25V input tolerance enables direct DB-9 connection in noisy environments. |
| 7 | T1OUT | True RS-232 output (±5.4V) from transmitter 1 - compliant with EIA/TIA-232-F standard for cable lengths up to 50 ft. |
| 8 | VCC | +5V power supply input - powers both UART core and RS-232 charge pump; bypass capacitor required at pin. |
| 9 | X2 | Crystal oscillator terminal 2 - left unconnected when using external CMOS clock; forms resonant tank with X1. |
| 10 | X1 | Crystal oscillator terminal 1 / external CMOS clock input - supports 1.8432MHz crystal for standard baud rates. |
| 11 | CTS | Active-low Clear-to-Send input - enables hardware flow control; status readable via configuration register bit. |
| 12 | RTS | Active-low Request-to-Send output - controlled by RTS bit; usable for RS-485 driver enable in hybrid systems. |
| 13 | RX | Asynchronous serial data input to UART - receives TTL/CMOS-level data from R1OUT/R2OUT for internal processing. |
| 14 | TX | Asynchronous serial data output from UART - drives T1IN/T2IN to route processed data to RS-232 transmitters. |
| 15 | DIN | SPI/MICROWIRE serial data input - Schmitt-triggered for noise immunity; latched on SCLK rising edge. |
| 16 | DOUT | SPI/MICROWIRE serial data output - high-impedance when CS is high; valid on SCLK falling edge after CS fall. |
| 17 | SCLK | SPI/MICROWIRE serial clock input - Schmitt-triggered; defines timing for all register read/write operations. |
| 18 | CS | Active-low chip-select input - initiates 16-bit SPI transaction; IRQ, TX, RTS remain active regardless of CS state. |
| 19 | IRQ | Open-drain interrupt output - asserts on FIFO full, parity error, CTS change, or RX transition during shutdown. |
| 20 | SHDN | Hardware shutdown input - pulls low to disable RS-232 charge pump and transmitters while keeping UART active. |
| 21 | V+ | +5.5V generated by internal voltage-doubler charge pump - not user-accessible; powers RS-232 transmitter stages. |
| 22 | C1+ | Positive terminal of internal voltage-doubler capacitor - internal node; no external connection permitted. |
| 23 | C1- | Negative terminal of internal voltage-doubler capacitor - internal node; no external connection permitted. |
| 24 | C2+ | Positive terminal of internal inverting charge-pump capacitor - internal node; no external connection permitted. |
| 25 | C2- | Negative terminal of internal inverting charge-pump capacitor - internal node; no external connection permitted. |
| 26 | V- | -5.5V generated by internal inverting charge pump - not user-accessible; powers RS-232 receiver stages. |
| 27 | GND | Ground reference for all analog and digital circuits - must be connected to system common ground plane. |
| 28 | T2OUT | True RS-232 output (±5.4V) from transmitter 2 - enables independent second serial link without external transceivers. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated UART + RS-232 transceiver | Eliminates need for separate UART IC and RS-232 line driver/receiver, reducing BOM count and PCB area by >40%. |
| Internal charge-pump capacitors | Removes requirement for four external 1µF capacitors, simplifying layout and improving reliability in vibration-prone applications. |
| 8-word receive FIFO | Reduces µC interrupt servicing frequency by up to 8× compared to single-byte buffering, lowering firmware complexity. |
| Hardware/software shutdown modes | Enables two-tier power management: hardware-only (10µA, UART active) or combined (3µA, full sleep) for optimal energy use. |
| ±15kV ESD protection on R_IN/T_OUT | Meets IEC 61000-4-2 Level 4 without external TVS diodes, reducing component count and board space in field-deployed equipment. |
| SPI/QSPI/MICROWIRE compatibility | Supports direct connection to ARM Cortex-M, PIC, and MSP430 microcontrollers using standard peripheral libraries - no custom drivers needed. |
Applications
| Point-of-Sale (POS) Terminals | Industrial Front-Panel Interfaces |
|---|---|
Use Scenario: Compact handheld POS terminals requiring reliable RS-232 connectivity to receipt printers and barcode scanners in retail environments. IC Role / Device Role / Timing Role: Acts as primary UART-to-RS-232 bridge, managing bidirectional data flow between ARM-based host and legacy peripherals. Use Value: Internal capacitors and 28-pin DIP simplify mechanical integration into tight enclosures; ±15kV ESD withstands repeated cable plugging/unplugging. |
Use Scenario: Operator panels on factory-floor PLCs and HMIs needing local diagnostics via RS-232 port while maintaining low standby power. IC Role / Device Role / Timing Role: Provides isolated RS-232 communication channel with hardware flow control (RTS/CTS) and interrupt-driven receive handling. Use Value: 10µA shutdown current enables always-on monitoring of external devices; 230kbps throughput supports real-time firmware updates. |
| Telecom Diagnostic Ports | Hand-Held/Battery-Powered Equipment |
Use Scenario: Field-service test tools connecting to telecom switch maintenance ports for configuration and log retrieval over RS-232. IC Role / Device Role / Timing Role: Serves as configurable UART with crystal-based baud generation, supporting precise timing for protocol analyzers and loopback testing. Use Value: Guaranteed 230kbps operation ensures compatibility with legacy telecom gear; software-programmable divisor covers all standard rates from 300 to 230kbaud. |
Use Scenario: Portable medical monitors and environmental sensors powered by AA batteries requiring long operational life and robust serial debug access. IC Role / Device Role / Timing Role: Functions as ultra-low-power serial interface with hardware shutdown, enabling wake-on-RX for event-driven data logging. Use Value: 600µA active current and 10µA shutdown extend battery runtime beyond 12 months in intermittent-use applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar UART + RS-232 transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3222CPE+ | Single-supply +3.0V to +5.5V RS-232 transceiver only - no integrated UART or SPI interface; requires external µC UART. | Used where existing µC has built-in UART and only RS-232 level translation is needed; lacks FIFO and baud-rate generator. | Select when board space allows separate UART + transceiver and design already uses SPI/I²C for other peripherals. |
| MAX3111EEWI+ | +3.3V supply version with identical pinout and SPI interface, but lower VCC range (+3.0V to +3.6V) and 300µA typical ICC. | Targets modern low-voltage embedded systems; shares same register map and firmware but cannot operate from +5V. | Choose for new 3.3V designs prioritizing lowest active current; not drop-in compatible due to supply voltage mismatch. |
Compared with MAX3222CPE+, the MAX3110ECNI+G36 reduces component count and firmware overhead via integrated UART and FIFO; compared with MAX3111EEWI+, it supports legacy +5V systems but draws higher supply current - making it optimal for cost-sensitive, space-constrained 5V industrial interfaces.
Availability
MAX3110ECNI+G36 is available at Aetrix Electronics and suitable for point-of-sale terminals, industrial HMI front panels, and telecom diagnostic tools requiring stable component supply, long-term lifecycle support, and RoHS-compliant through-hole packaging.
Supply support for MAX3110ECNI+G36 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
Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog and mixed-signal ICs for industrial, communications, and computing applications.
The MAX3110E series was designed to consolidate UART functionality and RS-232 physical layer into a single chip for space- and power-constrained embedded systems - targeting cost-sensitive industrial and portable equipment markets.
FAQ
What is the maximum guaranteed data rate for MAX3110ECNI+G36 while maintaining full EIA/TIA-232 compliance?
The MAX3110ECNI+G36 is guaranteed to operate at up to 230kbps while delivering true RS-232 output voltage levels (±5.4V) and meeting EIA/TIA-232-F timing specifications. This rating is validated across the full commercial temperature range (0°C to +70°C) and applies to both T1OUT and T2OUT outputs under 3kΩ load conditions.
Does MAX3110ECNI+G36 require external capacitors for RS-232 level generation?
No, the MAX3110ECNI+G36 integrates all necessary charge-pump capacitors internally. Unlike traditional RS-232 transceivers, it requires zero external capacitors to generate ±5.4V RS-232 output levels from a single +5V supply - simplifying layout and improving reliability in high-vibration environments.
Can MAX3110ECNI+G36 operate from a +3.3V supply?
No, the MAX3110ECNI+G36 is specified only for +4.5V to +5.5V operation. For +3.3V systems, the pin-compatible MAX3111E variant (e.g., MAX3111EEWI+) should be used - it shares identical functionality and register mapping but is optimized for +3.0V to +3.6V supply rails.
How does the hardware shutdown mode affect UART functionality in MAX3110ECNI+G36?
In hardware shutdown mode (SHDN = GND), the MAX3110ECNI+G36 disables only the RS-232 charge pump and transmitters while keeping the UART fully operational - allowing continued SPI communication, crystal oscillator running, and IRQ assertion on RX transitions. This enables low-power monitoring of external devices without losing UART readiness.
What is the purpose of the IRQ pin on MAX3110ECNI+G36, and which events trigger it?
The IRQ pin on MAX3110ECNI+G36 is an open-drain interrupt output that asserts low on four configurable conditions: receive FIFO full (R bit), parity error (RA/FE bit), CTS input change (CTS bit), or RX transition during shutdown. Each source is individually maskable via configuration register bits RM, RAM, and PM - enabling flexible, low-overhead event-driven firmware design.
MAX3110ECNI+G36 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 28-DIP (0.300", 7.62mm)
- Programmable:
- Not Verified
- Protocol:
- RS232, RS485
- Function:
- Controller
- Interface:
- SPI, UART
- Standards:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Supply:
- 600µA
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 28-PDIP
- Grade:
- -
- Qualification:
- -
MAX3110ECNI+G36 FAQ
1.How can I place an order for MAX3110ECNI+G36 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3110ECNI+G36 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 MAX3110ECNI+G36 reliable?
The price and inventory of MAX3110ECNI+G36 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3110ECNI+G36 is usually 5 days.
3.What payment methods are accepted for MAX3110ECNI+G36?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3110ECNI+G36 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3110ECNI+G36?
MAX3110ECNI+G36 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3110ECNI+G36 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 MAX3110ECNI+G36?
For technical support, including MAX3110ECNI+G36 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3110ECNI+G36 requirements.
6.How does Aetrix verify that MAX3110ECNI+G36 is sourced from the original manufacturer or authorized distributors?
All MAX3110ECNI+G36 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 MAX3110ECNI+G36 meets industry standards.
7.What is the process for return or replacement of MAX3110ECNI+G36?
All MAX3110ECNI+G36 units undergo pre-shipment inspection (PSI). If there is an issue with MAX3110ECNI+G36, 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 MAX3110ECNI+G36 part is unused and in its original packaging.
Return procedure for MAX3110ECNI+G36:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX3110ECNI+G36 Tags
-
PTN5150AHXMP
NXP Semiconductors
-
USB3740B-AI9-TR
Microchip Technology
-
USB3740B-AI2-TR
Microchip Technology
-
USB3300-EZK-TR
Microchip Technology
-
USB3300-EZK
Microchip Technology
-
FUSB340TMX
onsemi
-
FUSB302BMPX
onsemi
-
DP83826IRHBR
Texas Instruments
-
MCP2518FDT-E/QBB
Microchip Technology
-
FUSB302MPX
onsemi
-
MCP2518FDT-E/SL
Microchip Technology
-
FT260Q-R
FTDI, Future Technology Devices International Ltd
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
