Analog Devices Inc./Maxim Integrated MAX9375EUA+

Overview

MAX9375EUA+ from Maxim Integrated is a fully differential, single-channel LVDS/anything-to-LVPECL translator IC designed for high-speed signal routing in backplane and network infrastructure. It supports up to 2GHz switching frequency, features 421ps typical propagation delay, 30ps max pulse skew, and operates from a +3.3V supply across –40°C to +85°C in an 8-pin µMAX package-enabling precise timing translation in DSLAM and WAN line cards.

For engineers reviewing the MAX9375EUA+ datasheet, MAX9375EUA+ pinout, MAX9375EUA+ application, or MAX9375EUA+ equivalent, key selection criteria include guaranteed 2GHz operation, LVPECL output drive into 50Ω, sub-500ps propagation delay, and compatibility with LVDS, CML, HSTL, and generic differential inputs without level-shifting circuitry.

Technical Context

The MAX9375EUA+ implements a bipolar-based differential comparator architecture with emitter-follower LVPECL outputs requiring termination to VCC – 2.0V. Its input stage accepts differential signals as low as 100mV over a wide common-mode range (0.05V to VCC – 0.05V), supporting interoperability across LVDS, CML, HSTL, and LVPECL sources.

Output timing performance is stabilized via on-chip temperature compensation, delivering ≤2ps_RMS random jitter and ≤30ps pulse skew across –40°C to +85°C. The device draws 10–18mA supply current and maintains differential output swing of 595–725mV under 50Ω termination.

Key Specifications

Pinout & Package

MAX9375EUA+ is housed in an 8-pin µMAX package (3.05mm × 3.05mm, 0.6mm height), thermally optimized for high-speed PCB layouts with exposed pad not present. Pin 1 and Pin 8 are VCC; Pins 4 and 5 are GND; differential inputs occupy Pins 2 (IN) and 3 (IN); LVPECL outputs occupy Pins 6 (OUT) and 7 (OUT).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar differential-to-LVPECL translation applications.

Compared with MC100EP016A and SN65LVDS31, the MAX9375EUA+ uniquely delivers 2GHz operation at 3.3V with universal differential input support and true LVPECL outputs-making it the only option for high-density, multi-standard backplane timing translation without voltage conversion or external biasing.

Availability

MAX9375EUA+ is available at Aetrix Electronics and suitable for DSLAM line cards, WAN router backplanes, and optical transport network timing modules requiring stable component supply, consistent parametric performance, and long-term industrial temperature support.

Supply support for MAX9375EUA+ 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, mixed-signal, and RF solutions for industrial, communications, and computing markets.

The MAX9375EUA+ belongs to Maxim's high-speed interface translator product line, engineered specifically for deterministic, low-jitter signal translation in telecom infrastructure where timing integrity and multi-standard interoperability are critical.

FAQ

What is the maximum operating frequency supported by the MAX9375EUA+?

The MAX9375EUA+ is guaranteed to operate up to 2.0GHz switching frequency across its full temperature range (–40°C to +85°C), with typical performance reaching 2.5GHz. This specification is validated under defined AC test conditions including 50Ω termination and 125ps input transition time, making MAX9375EUA+ suitable for OC-192 and 10G Ethernet timing applications.

Does the MAX9375EUA+ require external termination resistors?

Yes, the MAX9375EUA+ requires external 50Ω ±1% resistors from each LVPECL output (Pins 6 and 7) to VCC – 2.0V. This termination is mandatory to establish correct VOH and VOL levels and ensure fast, low-distortion transitions. Failure to apply proper termination results in undefined output states and degraded jitter performance for MAX9375EUA+.

Can the MAX9375EUA+ accept CML or HSTL inputs directly?

Yes, the MAX9375EUA+ accepts CML and HSTL differential inputs directly without level-shifting circuitry. Its input stage supports any differential signal with ≥100mV amplitude and common-mode voltage between 0.05V and VCC – 0.05V, which covers standard CML (V_CM ≈ V_CC – 0.2V) and HSTL Class I/II (V_CM = 0.75V–1.5V) ranges when powered from +3.3V - a core capability of MAX9375EUA+.

What is the recommended power-supply bypassing scheme for MAX9375EUA+?

The MAX9375EUA+ requires two ceramic capacitors: 0.1µF and 0.01µF, placed between VCC (Pins 1 and 8) and GND (Pins 4 and 5). The 0.01µF capacitor must be positioned closest to the device pins to suppress high-frequency noise, while the 0.1µF provides bulk decoupling. Both must be surface-mount X7R types with short, low-inductance traces - essential for stable 2GHz operation of MAX9375EUA+.

Is the MAX9375EUA+ pin-compatible with other Maxim LVPECL translators?

No, the MAX9375EUA+ has a unique 8-pin µMAX pinout optimized for differential signal routing: VCC on Pins 1/8, GND on Pins 4/5, IN/IN on Pins 2/3, and OUT/OUT on Pins 6/7. It is not pin-compatible with MAX9374 or MAX9376, which differ in channel count and pin assignment - board layout must be dedicated to MAX9375EUA+.