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Analog Devices Inc./Maxim Integrated MAX13173EETU+
- Part No.:
- MAX13173EETU+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Specialized
- Package:
- 38-WFQFN Exposed Pad
- Datasheet:
-
MAX13173EETU+.pdf
- Description:
- MULTIPROTOCOL, PIN-SELECTABLE DA
- Quantity:
- Payment:
- Shipping:
Inventory:4,193
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Product details
Overview
MAX13173EETU+ from Maxim Integrated is a multiprotocol, pin-selectable DCE/DTE control-signal transceiver supporting V.28 (RS-232), V.10 (RS-423), V.11 (RS-449/V.36/RS-530/RS-530A/X.21), and V.35 protocols. It delivers 20/40Mbps data rates in V.11/V.35 modes, features true fail-safe receivers, operates from +3.135V to +5.5V, and integrates charge-pump circuitry for compliant output swing - used in CSU/DSU, telecom equipment, and data routers.
For engineers reviewing the MAX13173EETU+ datasheet, MAX13173EETU+ pinout, MAX13173EETU+ application, or MAX13173EETU+ equivalent, this page provides verified electrical parameters, protocol-specific performance data (V.28/V.10/V.11/V.35), thermal shutdown behavior, ESD protection levels, and real-world interface configuration guidance for legacy and hybrid data communications systems.
Technical Context
The MAX13173EETU+ implements dual-mode transmitter/receiver channels with independent V.11 and V.10 driver stages, plus V.28-compatible outputs. Its pin-selectable DCE/DTE configuration enables flexible system-level interface mapping without external logic, while internal charge-pump regulation maintains V.11 ±5.5V differential swing and V.28 ±6V output compliance across supply voltages.
True fail-safe receiver architecture ensures valid logic-high output under open-circuit or shorted-line conditions in V.11/V.35 modes, preserving signal integrity in noisy telecom environments. Short-circuit current limiting and thermal shutdown at +145°C protect against sustained fault conditions during cable miswiring or connector faults.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | +3.135V to +5.5V - supports direct connection to 3.3V or 5V system rails without LDO. |
| Data Rate (V.11/V.35) | 20/40Mbps max - enables high-speed synchronous serial links in X.21 and V.35 telecom interfaces. |
| V.28 Output Swing | ±5V to ±6V (RL = 3kΩ) - meets RS-232 TIA-232-F voltage compliance for long-cable operation. |
| V.11 Differential Output | ±5.26V (loaded, R = 50Ω) - satisfies ITU-T V.11 common-mode and differential swing requirements. |
| ESD Protection | ±15kV HBM, ±15kV air-gap IEC 61000-4-2 on T/R pins - eliminates need for external TVS diodes in field-deployed equipment. |
| Thermal Shutdown | +145°C - prevents latch-up or permanent damage during sustained overcurrent events. |
| No-Cable Mode Current | 0.01µA to 10µA - reduces standby power to near-zero when cable disconnected, critical for energy-sensitive telecom modules. |
Pinout & Package
MAX13173EETU+ is housed in a 5mm × 7mm, 38-pin TQFN-EP package with exposed pad for thermal dissipation. Pin functions are defined per the DB-25 connector mapping shown in the typical operating circuit (Figure 1), supporting full DTE/DCE control-signal routing including RTS, CTS, DTR, DSR, DCD, RXC, TXC, SCTE, and shield connections.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CTS A (106), CTS B | V.11/V.28 receiver input | Dual-channel clear-to-send detection with fail-safe biasing for robust handshaking in noisy environments. |
| RTS A (105), RTS B | V.11/V.28 transmitter output | Configurable as DCE or DTE via M0/M1/M2 pins; supports 40Mbps loopback testing in V.11 mode. |
| DTR A (108), DTR B | V.11/V.28 transmitter output | Independent drive capability enables simultaneous modem control and auxiliary signaling without contention. |
| DCD A (107), DCD B | V.11/V.28 receiver input | Carrier-detect inputs with ±15V common-mode range tolerate ground potential differences up to 30V between devices. |
| RXC A (115), RXC B | Receiver clock input | Differential clock recovery path compatible with V.35 and V.11 timing standards; supports jitter-tolerant sync. |
| TXC A (114), TXC B | Transmitter clock output | Low-skew (<3ns channel-to-channel) clock distribution for synchronous data transmission in CSU/DSU applications. |
| SCTE A (113), SCTE B | Secondary clock terminal enable | Enables/disables secondary clock paths independently - essential for multi-protocol port sharing in router line cards. |
| SG (102), SHIELD (101) | Signal ground / chassis shield | Dedicated low-inductance grounding points minimize EMI coupling in mixed-signal telecom backplanes. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-selectable DCE/DTE mode | Eliminates external jumpers or configuration EEPROM; M0/M1/M2 pins directly set interface role at power-on. |
| True fail-safe receivers | Guarantees logic-high output when inputs float or short, preventing spurious handshaking in unpowered or disconnected states. |
| V.11/V.35 protocol coexistence | Single device supports both standards via pin-strapping - reduces BOM count in multi-standard telecom gateways. |
| Integrated charge-pump regulators | Generates ±5.5V rails internally from single 3.3V/5V supply - removes need for external DC-DC converters or charge-pump ICs. |
| Extended temperature operation | -40°C to +85°C rating ensures reliability in outdoor telecom cabinets and industrial network edge devices. |
Applications
| CSU/DSU Interface | Telecom Data Router |
|---|---|
Use Scenario: Channel Service Unit/Data Service Unit connecting T1/E1 lines to customer premises equipment. IC Role / Device Role / Timing Role: Control-signal transceiver handling RTS/CTS/DTR/DSR/DCD handshaking and clock distribution (RXC/TXC/SCTE) between line card and backplane. Use Value: 40Mbps V.11 support enables full T1 (1.544Mbps) and E1 (2.048Mbps) link monitoring with margin; no-cable mode cuts idle power by >99.9%. | Use Scenario: Multi-protocol packet router supporting legacy serial WAN interfaces alongside Ethernet. IC Role / Device Role / Timing Role: Protocol-agnostic control interface bridging V.35, V.28, and X.21 physical layers to internal UART or HDLC controller. Use Value: Pin-selectable termination and DCE/DTE mode allow one PCB layout to serve multiple carrier-specific configurations without redesign. |
| PCI Communication Card | Data Switch Management Port |
Use Scenario: PCI add-in card providing RS-232, V.35, and X.21 ports for industrial PC-based test equipment. IC Role / Device Role / Timing Role: High-density control-signal interface managing up to six independent serial channels with shared charge-pump resources. Use Value: 38-pin TQFN footprint saves >40% board area vs. discrete RS-232/V.35 solutions; ±15kV ESD rating eliminates external protection components. | Use Scenario: Out-of-band management port on Ethernet switches requiring reliable serial console access. IC Role / Device Role / Timing Role: Fail-safe V.28 transceiver ensuring console availability even during power brownouts or cable faults. Use Value: True fail-safe receivers prevent false break signals during hot-plug events; thermal shutdown protects against connector shorts in field service scenarios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiprotocol control-signal transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX13171EETU+ | Carries high-speed clock/data signals (TXD/RXD/TXC/RXC); lacks control-signal channels (RTS/CTS/DTR/etc.) of MAX13173EETU+. | Used where data-path transceivers are needed separately from control-path devices - e.g., split-function line cards. | Select MAX13171EETU+ only when dedicated clock/data channel isolation is required; not a functional substitute for control-signal handling. |
| MAX13175EETU+ | Pin-selectable resistor termination network (six channels); no transmitter/receiver circuitry - functions as passive impedance matcher only. | Deployed alongside MAX13173EETU+ to configure cable termination per protocol (V.35/V.11); cannot replace transceiver functionality. | MAX13175EETU+ must be used in conjunction with MAX13173EETU+ for full multiprotocol compliance; not a standalone alternative. |
Compared with MAX13171EETU+ and MAX13175EETU+, the MAX13173EETU+ uniquely integrates all control-signal transceiver functions - including RTS/CTS/DTR/DSR/DCD and dual-clock paths - enabling compact, single-chip DCE/DTE interface design without external logic or discrete drivers.
Availability
MAX13173EETU+ is available at Aetrix Electronics and suitable for CSU/DSU, telecom data routers, and PCI communication cards requiring stable component supply across extended temperature and multi-protocol deployment cycles.
Supply support for MAX13173EETU+ 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) designs precision analog, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.
The MAX1317x family was engineered specifically for legacy and hybrid telecom infrastructure, delivering pin-selectable multi-protocol interface capability to simplify migration from RS-232 to V.35/X.21 while maintaining backward compatibility.
FAQ
What protocols does the MAX13173EETU+ support?
The MAX13173EETU+ supports V.28 (RS-232), V.10 (RS-423), V.11 (RS-449/V.36/RS-530/RS-530A/X.21), and V.35 protocols. It achieves protocol selection through pin-strapping of M0/M1/M2 and DCE/DTE inputs, enabling hardware-configured operation without firmware intervention. Each protocol mode defines specific voltage swing, load impedance, and timing behavior validated per ITU-T and TIA standards.
Does the MAX13173EETU+ require external charge-pump capacitors?
Yes, the MAX13173EETU+ requires four external capacitors for its internal charge-pump: two 1µF (C1, C2) and three 4.7µF (C3, C4, C5) ceramic capacitors as specified in Figure 15 of the datasheet. These capacitors stabilize the generated ±VDD/VEE rails that enable compliant V.28 and V.11 output swings from a single 3.3V or 5V supply.
How does the no-cable mode function in the MAX13173EETU+?
The no-cable mode in the MAX13173EETU+ disables all transmitter and receiver outputs into high-impedance state and reduces supply current to 0.01µA–10µA. It is activated automatically when cable detection logic identifies an open or disconnected line, conserving power in idle states - especially valuable in battery-backed or thermally constrained telecom equipment where MAX13173EETU+ is deployed.
What is the purpose of the SCTE pin on the MAX13173EETU+?
The SCTE (Secondary Clock Terminal Enable) pin on the MAX13173EETU+ controls activation of secondary clock paths (RXC B, TXC B, SCTE B). When asserted, it enables redundant or auxiliary clock distribution for applications requiring dual-clock domains - such as hitless switchover in carrier-grade routers or separate timing for control vs. data channels in CSU/DSU units using MAX13173EETU+.
Is the MAX13173EETU+ pin-compatible with earlier Maxim interface ICs?
No, the MAX13173EETU+ is not pin-compatible with prior-generation Maxim transceivers like the MAX3380E or MAX3386E. Its 38-pin TQFN layout, dual-channel pin assignments (e.g., RTS A/B, CTS A/B), and integrated charge-pump interface differ fundamentally. Migration requires PCB layout revision and validation of timing, termination, and power-delivery networks specific to MAX13173EETU+.
MAX13173EETU+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 38-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Applications:
- Telecommunications
- Interface:
- -
- Voltage - Supply:
- 3.135V ~ 5.5V
- Supplier Device Package:
- 38-TQFN (5x7)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
MAX13173EETU+ FAQ
1.How can I place an order for MAX13173EETU+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX13173EETU+ 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 MAX13173EETU+ reliable?
The price and inventory of MAX13173EETU+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX13173EETU+ is usually 5 days.
3.What payment methods are accepted for MAX13173EETU+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX13173EETU+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX13173EETU+?
MAX13173EETU+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX13173EETU+ 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 MAX13173EETU+?
For technical support, including MAX13173EETU+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX13173EETU+ requirements.
6.How does Aetrix verify that MAX13173EETU+ is sourced from the original manufacturer or authorized distributors?
All MAX13173EETU+ 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 MAX13173EETU+ meets industry standards.
7.What is the process for return or replacement of MAX13173EETU+?
All MAX13173EETU+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX13173EETU+, 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 MAX13173EETU+ part is unused and in its original packaging.
Return procedure for MAX13173EETU+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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