MAX338CSE+T

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX338CSE+T is an 8-channel CMOS analog multiplexer from the MAX338/MAX339 family, designed to connect one of eight inputs to a common output via a 3-bit binary address. It operates on single supplies from +4.5V to +30V or dual supplies of ±4.5V to ±20V. The device features a maximum on-resistance of 650Ω at +25°C (single supply) and 500Ω across the full temperature range (dual supply). Off-leakage current is less than 1.25nA at maximum temperature for the C-grade part. Transition time is typically 500ns, with charge injection at 5pC typical. Control inputs are TTL compatible (+0.8V to +2.4V).

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Extremely low off-leakage currents below 20pA at +25°C.
• Guaranteed low charge injection of 1.5pC typical.
• ESD protection exceeding 2000V per method 3015.7.
• Pin-compatible upgrade for industry-standard DG508A.

Analog Switches, Multiplexers, Demultiplexers Applications

• Data-acquisition systems
• Test equipment
• Military radios
• Guidance and control systems
• Sample-and-hold circuits

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the ordering suffix 'T' indicates tape-and-reel packaging when sourcing this component. Confirm that the 'C' designation aligns with the required commercial operating temperature range of 0°C to +70°C for your specific application environment.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the MAX338CSE+T when an 8-channel configuration is required within the commercial temperature range. Ensure the system voltage does not exceed the absolute maximum ratings of 44V differential between V+ and V-. Consider the MAX339 if only four channels are needed.

Analog Switches, Multiplexers, Demultiplexers Part Context

This component belongs to the Maxim Integrated MAX338/MAX339 series of low-leakage CMOS analog multiplexers. The MAX338 variant specifically provides eight independent channels, whereas the MAX339 offers two independent four-channel sets. Both share identical pinouts and core switching characteristics.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The MAX338CSE+T serves as a direct pin-compatible replacement for the DG508A. For applications requiring lower leakage but higher on-resistance, the MAX328 is a suitable alternative within the same product family.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the MAX338 handle overvoltage conditions?

Signals on NO, COM, EN, A0, A1, or A2 exceeding V+ or V- are clamped by internal diodes. Forward current must be limited to the maximum current ratings to prevent damage.

What is the logic compatibility of the control inputs?

All control inputs, including address and enable lines, are TTL compatible, accepting logic levels between +0.8V and +2.4V over the full specified temperature range.

Can the MAX338 operate with unbalanced power supplies?

Yes, the device can operate with unbalanced supplies, such as +24V and -5V, provided the difference between V+ and V- does not exceed 44V.