SCD5980 Rev A

FEATURES

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Bidirectional Voltage translator with two separate supply rails.

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Radiation performance

- Total dose:

>1Mrad(Si); Dose rate = 50 - 300 rads(Si)/s

- ELDRS Immune

- SEL Immune

- Neutron Displacement Damage

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Full military temperature range

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Designed for aerospace and high reliability space applications

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Packaging – Hermetic ceramic SOIC

- 24-pin, .614"L x .299"W x .120"Ht

- Weight - 2.0 grams max

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Aeroflex Plainview’s Radiation Hardness Assurance Plan is DLA Certified to MIL-PRF-38534, Appendix G.

RadHard-by-Design

GENERAL DESCRIPTION

Aeroflex’s RHD5980 is a radiation hardened, Octal Level Shifter in a 24-pin SOIC package. The RHD5980

design uses specific circuit topology and layout methods to mitigate total ionizing dose effects and single

event latchup. These characteristics make the RHD5980 especially suited for the harsh environment

encountered in Deep Space missions. It is guaranteed operational from -55°C to +125°C. Available

screened in accordance with MIL-PRF-38534 Class K, the RHD5980 is ideal for demanding military and

space applications.

ORGANIZATION AND APPLICATION

The RHD5980 Octal Level Shifter is a radiation hard replacement for the industry standard Bidirectional

Voltage Translators. It is capable of level shifting from the A-to-B or B-to-A input ports for nominal logic

voltages on either port of 5.0 or 3.3 volts.

The RHD5980 can level shift from 5.0V to 3.3V or 3.3V to 5.0V, and also buffer from 5.0V to 5.0V or 3.3V

to 3.3V. Ports A and B can be inputs or outputs depending on the value of DIR_AB_H.

Control inputs are the standard tri-state enable (OE_L active low) and direction control DIR_AB_H where

a HIGH logic steers data from A-to-B and active LOW steers the data from B-to-A.

All delay parameters are less than 30nS over full -55°C to +125°C military temperature range and logic

levels. All bus and control inputs have Schmitt trigger buffers to implement low-to-high transition at

approximately 60% of the corresponding logic supply and high-to-low transition at approximately 40%

providing considerable noise immunity for slow input signals

effects are application dependent.

Standard Products

April 29, 2014

www.aeroflex.com/RHDseries

RHD5980 Octal Bus Transceiver

Datasheet

Bidirectional Voltage Level Shifter