Analog Devices Inc./Maxim Integrated MAX626CSA+

Overview

MAX626CSA+ from Maxim Integrated is a high-speed, dual-channel CMOS/TTL-compatible line driver with 50Ω output impedance, ±10mA drive capability, and 2.5ns propagation delay, used in high-fidelity video signal distribution and digital bus buffering applications.

For engineers reviewing the MAX626CSA+ datasheet, MAX626CSA+ pinout, MAX626CSA+ application, or MAX626CSA+ equivalent, key selection criteria include guaranteed 2.5ns max t_PD, rail-to-rail output swing, independent enable control per channel, and SO-8 package compatibility with JEDEC MS-012AC.

Technical Context

The MAX626CSA+ integrates two matched, non-inverting buffer amplifiers with TTL/CMOS input thresholds and current-mode output stages optimized for 50Ω transmission lines. Each channel features separate OE# inputs enabling independent channel gating without affecting the other.

It operates from a single +5V supply with input voltage range of 0V to V_CC, supports hot-swap tolerant inputs, and maintains stable operation across –40°C to +85°C ambient temperature with no external compensation required.

Key Specifications

Pinout & Package

MAX626CSA+ is housed in an 8-pin SOIC package (SO-8, JEDEC MS-012AC), 3.9mm width, 1.75mm height, with exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual high-speed line driver applications.

Compared with SN65LVDS22DR and MC100EP105DG, the MAX626CSA+ uniquely delivers single-supply 5V operation, per-channel enable, and integrated 50Ω drive-making it optimal for cost-sensitive, space-constrained industrial video and bus isolation where signal integrity and logic compatibility are primary constraints.

Availability

MAX626CSA+ is available at Aetrix Electronics and suitable for video signal distribution, digital bus buffering, and industrial data acquisition requiring stable component supply and long-term industrial temperature support.

Supply support for MAX626CSA+ 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 high-speed interface ICs for industrial, communications, and computing applications.

The MAX626CSA+ belongs to Maxim's high-speed line driver product line, engineered specifically for single-supply, 50Ω-terminated digital signal conditioning in video, instrumentation, and test equipment.

FAQ

What is the maximum operating frequency supported by the MAX626CSA+?

The MAX626CSA+ supports reliable operation up to 400Mbps NRZ data rates due to its guaranteed 2.5ns maximum propagation delay and sub-1ns rise/fall times. This performance is validated across the full –40°C to +85°C temperature range and with 50Ω transmission line loads. The MAX626CSA+ does not specify a fixed "maximum frequency" but achieves this data rate with <100ps channel-to-channel skew and minimal jitter, making it suitable for high-fidelity video clock and data distribution where timing precision is critical.

Does the MAX626CSA+ require external termination resistors?

No, the MAX626CSA+ does not require external series termination resistors because it features internally matched 50Ω output impedance per channel. When driving a properly terminated 50Ω transmission line, the MAX626CSA+ delivers full-swing, low-reflection signals without added components. External parallel termination is still required at the receiver end per standard practice. This internal matching simplifies PCB layout and reduces BOM count for the MAX626CSA+ in point-to-point high-speed interfaces.

Can the two channels of the MAX626CSA+ be used independently?

Yes, the MAX626CSA+ provides fully independent operation for each channel via dedicated active-low enable inputs (OE1# and OE2#). Asserting OE1# places OUT1 in high-impedance state without affecting OUT2, and vice versa. This allows dynamic channel gating, time-multiplexed signal routing, or fault-isolation scenarios. Both channels share only V_CC and GND, with no electrical coupling in propagation delay, skew, or power supply rejection-ensuring true independence in the MAX626CSA+.

Is the MAX626CSA+ compatible with 3.3V logic inputs?

Yes, the MAX626CSA+ accepts 3.3V logic inputs reliably because its input thresholds (V_IL ≤ 0.8V, V_IH ≥ 2.0V) are compatible with both 3.3V and 5V CMOS/TTL logic families. A 3.3V high-level signal exceeds the 2.0V V_IH minimum, and the input structure is designed to tolerate hot-swap conditions. No level-shifting circuitry is needed, making the MAX626CSA+ interoperable across mixed-voltage systems without compromising timing or signal integrity.

What package type is used for the MAX626CSA+ and is it RoHS compliant?

The MAX626CSA+ is supplied in an 8-pin SOIC package (SO-8, JEDEC MS-012AC) with 3.9mm body width and standard gull-wing lead form. It is RoHS compliant and lead-free, meeting EU Directive 2011/65/EU and IPC/JEDEC J-STD-609A Class 3 marking requirements. The package has no exposed thermal pad, and the MAX626CSA+ is rated for reflow soldering per JEDEC J-STD-020D.3, with peak temperature up to 260°C.